CN205260084U - Multi -functional energy storage system - Google Patents
Multi -functional energy storage system Download PDFInfo
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- CN205260084U CN205260084U CN201520940526.8U CN201520940526U CN205260084U CN 205260084 U CN205260084 U CN 205260084U CN 201520940526 U CN201520940526 U CN 201520940526U CN 205260084 U CN205260084 U CN 205260084U
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- carbon dioxide
- salt solution
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- 238000004146 energy storage Methods 0.000 title claims abstract description 41
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims abstract description 901
- 229910002092 carbon dioxide Inorganic materials 0.000 claims abstract description 449
- 239000001569 carbon dioxide Substances 0.000 claims abstract description 448
- 238000003860 storage Methods 0.000 claims abstract description 211
- 229960004424 carbon dioxide Drugs 0.000 claims description 447
- 239000012266 salt solution Substances 0.000 claims description 266
- 238000011084 recovery Methods 0.000 claims description 168
- 238000001816 cooling Methods 0.000 claims description 57
- 150000003839 salts Chemical class 0.000 claims description 56
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 35
- 229910052799 carbon Inorganic materials 0.000 claims description 35
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 33
- 238000002347 injection Methods 0.000 claims description 28
- 239000007924 injection Substances 0.000 claims description 28
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 9
- 238000009825 accumulation Methods 0.000 claims description 9
- 229910052719 titanium Inorganic materials 0.000 claims description 9
- 239000010936 titanium Substances 0.000 claims description 9
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 7
- 239000003673 groundwater Substances 0.000 claims description 7
- 239000011780 sodium chloride Substances 0.000 claims description 7
- 229910002090 carbon oxide Inorganic materials 0.000 claims description 3
- 230000005611 electricity Effects 0.000 abstract description 11
- 230000008901 benefit Effects 0.000 abstract description 7
- 239000012267 brine Substances 0.000 abstract description 6
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 abstract description 6
- 238000010521 absorption reaction Methods 0.000 abstract description 2
- 230000007613 environmental effect Effects 0.000 abstract 1
- 239000003344 environmental pollutant Substances 0.000 abstract 1
- 238000005338 heat storage Methods 0.000 abstract 1
- 231100000719 pollutant Toxicity 0.000 abstract 1
- 238000000034 method Methods 0.000 description 37
- 230000008569 process Effects 0.000 description 35
- 239000012535 impurity Substances 0.000 description 9
- 238000005516 engineering process Methods 0.000 description 5
- 230000001105 regulatory effect Effects 0.000 description 5
- 238000000926 separation method Methods 0.000 description 5
- 239000000243 solution Substances 0.000 description 5
- 238000010992 reflux Methods 0.000 description 4
- 238000012546 transfer Methods 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 3
- 230000001276 controlling effect Effects 0.000 description 3
- 230000001172 regenerating effect Effects 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 241000790917 Dioxys <bee> Species 0.000 description 2
- 230000003139 buffering effect Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000005728 strengthening Methods 0.000 description 2
- 239000003245 coal Substances 0.000 description 1
- 235000019628 coolness Nutrition 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 230000009919 sequestration Effects 0.000 description 1
- 238000013517 stratification Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
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- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
本实用新型涉及一种多功能储能系统，主要包括二氧化碳循环存储系统，地下盐水循环存储系统，热存储系统和冷存储系统。本实用新型在储能阶段利用富余电力完成二氧化碳的地下存储、地下盐水的存储、热能的存储和地热能的吸收，在释能阶段利用二氧化碳为工质实现冷、热、电的多方式供应。该系统可利用可再生能源为电力来源，实现二氧化碳、地下盐水的封闭式循环利用，同时有效利用地热能资源，在运行过程中无污染物排放，具有良好的经济效益和节能环保效益。
The utility model relates to a multifunctional energy storage system, which mainly includes a carbon dioxide circulation storage system, an underground brine circulation storage system, a heat storage system and a cold storage system. In the energy storage stage, the utility model uses surplus electric power to complete underground storage of carbon dioxide, underground brine storage, thermal energy storage and geothermal energy absorption, and in the energy release stage, carbon dioxide is used as a working medium to realize multi-mode supply of cold, heat and electricity. The system can use renewable energy as the power source to realize the closed cycle utilization of carbon dioxide and underground brine. At the same time, it effectively utilizes geothermal energy resources and has no pollutant emissions during operation. It has good economic benefits and energy-saving and environmental protection benefits.
Description
Technical field
The utility model relates to distributed energy supply and energy storage technology field, specifically, is a kind of with dioxyChanging carbon is main working medium, by carbon dioxide underground storage and geothermal energy utilization, realizes electricity, heat, coldThe multifunction energy storage system of confession.
Background technology
Since the industrial revolution, because great amount of carbon dioxide is disposed to atmosphere, global climate has occurred warmingFor the marked change of principal character. Climate warming directly has influence on global ecological environment, to the mankind's existenceBring huge challenge with development. At present, on for CO2 emission problem, carbon dioxide capture and(CarbondioxideCaptureandStorage the is called for short CCS) technology of sealing up for safekeeping becomes minimizing carbon dioxideTo one of important means of the discharge of atmosphere, this technology can be injected into underground by carbon dioxide capture compression(as underground sedimentary deposit, discarded oil field, not minable coal layer etc.) or benthos, utilize groundMatter structure realizes forever sealing up for safekeeping of carbon dioxide.
In recent years, because domestic and international many scholars recognize carbon dioxide capture and seal somewhat expensive and receipts up for safekeepingBenefit is very micro-, and carbon dioxide itself has good physics and chemical characteristic but is difficult to be utilized effectively.Therefore,, except carbon dioxide capture with sealing up for safekeeping, the problem relevant to carbon dioxide utilization also becomes graduallyFor new study hotspot. Wherein, there is scholar to propose a kind of strengthening ground that utilizes carbon dioxide to obtain geothermal energyHot system (EnhancedGeothermalSystems is called for short EGS), this system both can realize dioxyChange carbon sequestration, can utilize again carbon dioxide to obtain geothermal energy and be used. In this system, titanium dioxideCarbon injects underground through boosting, partial CO 2 can be stored in underground, and other a part of carbon dioxideAfter underground absorption geothermal energy, temperature raises, and is evacuated to ground more subsequently by equipment such as pumps. Generally speaking,Carbon dioxide temperature through geothermal energy heating can reach 200 DEG C of left and right, can be used for the direct generation of electricity or confessionHeat.
Although utilizing carbon dioxide to obtain geothermal energy, strengthening geothermal system can bring certain economic benefit,Thereby reduce the great number cost of carbon dioxide capture and Plugging Technology Applied, but in the face of the energy of user side complexity (cold,Heat, electricity) requirement and change, this system energy supply pattern is single, and the method that there is no is tackled preferably, is difficult to realizeProper Match between energy supply and user's request. Therefore in order to improve the benefit of utilizing of carbon dioxide,The utility model, from stored energy angle, proposes a kind of multi-functional confession taking carbon dioxide as main working mediumEnergy system, efficiently to tackle energy requirement and the variation issue of user side complexity.
Utility model content
For overcoming the shortcoming and defect of prior art, the utility model aim to provide one can realize electricity, heat,The multifunction energy storage system of cold alliance, this system, taking carbon dioxide as main working medium, is utilized in the energy storage stageElectric power more than needed completes the underground storage of carbon dioxide, release can the stage utilize various ways supply electricity, heat andCold to tackle flexibly user's energy requirement.
The technical scheme that the utility model is taked for its technical problem of solution is:
A kind of multifunction energy storage system, comprises carbon dioxide circulation energy storage and energy release unit, saline groundwater circulationEnergy storage and energy release unit, hot memory by using unit and cold memory by using unit, is characterized in that,
--described carbon dioxide circulation energy storage and energy release unit, comprises carbon dioxide buffer knockout drum, titanium dioxideCarbon storage tank, carbon dioxide storage tank supply gas pressure adjusting device, carbon dioxide injection well, carbon dioxideRecovery well, the main power supply decompressor of carbon dioxide, carbon dioxide heat utilization heat exchanger, the storage of carbon dioxide coolingTank, carbon dioxide cooling decompressor, wherein, the port of export of carbon dioxide buffer knockout drum is complied with by pipelineInferior to carbon dioxide storage tank, carbon dioxide storage tank supply gas pressure adjusting device and carbon dioxide injection wellArrival end be connected; Carbon dioxide recovery well is by pipeline and main power supply pipeline and cooling pipeline phase in parallelBe communicated with, wherein:
On described main power supply pipeline, be provided with the main power supply decompressor of carbon dioxide, carbon dioxide recovery well is passed throughPipeline after the main power supply decompressor of carbon dioxide with reclaim line in parallel, emergency service pipeline and auxiliary confessionFulgurite road is connected, wherein: described emergency service pipeline is by carbon dioxide emergency service heat exchanger cold sideAfter, be communicated with carbon dioxide emergency service decompressor arrival end; Described auxiliary power supply pipeline comprises in parallelTwo-stage auxiliary power supply pipeline, first order auxiliary power supply pipeline is cold through carbon dioxide one-level auxiliary power supply heat exchangerRear flank is connected with carbon dioxide one-level auxiliary power supply decompressor arrival end, and second level auxiliary power supply pipeline is through twoAfter carbonoxide secondary auxiliary power supply heat exchanger cold side with carbon dioxide secondary auxiliary power supply decompressor arrival end phaseConnect; Described reclaim line, carbon dioxide emergency service decompressor, carbon dioxide one-level auxiliary power supply expandThe port of export of machine and carbon dioxide secondary auxiliary power supply decompressor all with the entrance of carbon dioxide buffer knockout drumEnd is communicated with;
Described cooling pipeline is through carbon dioxide heat utilization exchanger heat rear flank, with carbon dioxide cooling bottom of storage tankPortion is connected; Carbon dioxide cooling storage tank by pipeline through carbon dioxide cooling decompressor, carbon dioxide coolingAfter the cold side of heat exchanger, be communicated with the arrival end of carbon dioxide buffer knockout drum;
--described saline groundwater circulation energy storage and energy release unit, comprises salt solution recovery well, salt solution recovery well pressureReinject booster and salt solution of adjuster, salt solution pressure recovery adjuster, salt water tank, salt solution reinjectsWell, wherein: salt solution recovery well is through salt solution recovery well pressure regulator, in parallel without heat utilization pipeline and heatUtilize pipeline, salt solution pressure recovery adjuster, salt water tank, salt solution reinject after booster with salt solution againInjection Well is connected; Wherein: described heat utilization pipeline successively by the hot side of salt solution heat utilization first-class heat exchanger,After the hot side of salt solution heat utilization secondary heat exchanger and salt solution pressure recovery adjuster, be communicated with salt water tank;
--described hot memory by using unit, comprises salt solution heat utilization one-level thermal storage device, salt solution heat utilization secondaryThermal storage device, carbon dioxide heat utilization thermal storage device, wherein: described salt solution heat utilization one-level thermal storage device heat accumulation sideBe communicated with heat for salt solution heat utilization one-level thermal storage device with the cold side of salt solution heat utilization first-class heat exchanger by pipelineSide is connected with the hot side of carbon dioxide one-level auxiliary power supply heat exchanger by pipeline; Described salt solution heat utilization twoLevel thermal storage device heat accumulation side is communicated with the cold side of salt solution heat utilization secondary heat exchanger by pipeline, salt solution heat utilizationSecondary thermal storage device is connected with the hot side of carbon dioxide secondary auxiliary power supply heat exchanger by pipeline by hot side; InstituteStating carbon dioxide heat utilization thermal storage device heat accumulation side connects by the cold side of pipeline and carbon dioxide heat utilization heat exchangerLogical, carbon dioxide heat utilization thermal storage device by hot side by the heat of pipeline and carbon dioxide emergency service heat exchangerSide is connected;
--described cold memory by using unit comprises carbon dioxide cooling cool storage container, wherein: carbon dioxide coolingCool storage container storage cold side is connected for the hot side of cold heat exchanger with carbon dioxide by pipeline, the storage of carbon dioxide coolingCooler is communicated with user side by pipeline with cold side.
Preferably, described carbon dioxide buffer knockout drum arrival end is provided with the control of carbon dioxide recovery end pressureValve processed; Connecting pipeline between described carbon dioxide buffer knockout drum and carbon dioxide storage tank is provided with twoCarbonoxide storage tank return-air valve; Described carbon dioxide storage tank and carbon dioxide storage tank supply gas pressure regulateOn connecting line between device, be provided with carbon dioxide storage tank steam supply valve and/or carbon dioxide storage tankGas supply filter and/or carbon dioxide storage tank air feed check-valves; Carbon dioxide storage tank supply gas pressure is adjustedOn connecting pipeline between regulating device and carbon dioxide injection well, be provided with carbon dioxide injection well valve and/Or carbon dioxide injection well pressure table and/or carbon dioxide injection well thermometer.
Preferably, in described reclaim line, be provided with the main power supply pipeline of carbon dioxide working medium recovery valve.
Preferably, described carbon dioxide recovery well export pipeline be provided with carbon dioxide recovery well valve and/Or carbon dioxide recovery well Pressure gauge and/or carbon dioxide recovery well thermometer and/or carbon dioxide are openedAdopt well check-valves and/or carbon dioxide recovery well filter; The arrival end of the main power supply decompressor of carbon dioxideBe provided with valve with the port of export.
Preferably, the arrival end of described emergency service pipeline is provided with carbon dioxide emergency service inlet valve,The port of export is provided with working medium recovery valve; The carbon dioxide emergency service decompressor port of export is provided with outlet valve.
Preferably, the described auxiliary power supply pipeline port of export is provided with working medium recovery valve; First and second level is auxiliaryOn power supply pipeline, be provided with inlet valve, the carbon dioxide I and II auxiliary power supply decompressor port of export is equalBe provided with outlet valve; And/or, on described cooling pipeline, be provided with carbon dioxide heat utilization heat exchanger entranceValve; On connecting pipeline between carbon dioxide cooling storage tank and carbon dioxide cooling decompressor, be provided with twoCarbonoxide cooling storage tank outlet valve and/or carbon dioxide cooling pipeline temperature controller; Carbon dioxide coolingThe cold side port of export of heat exchanger is provided with outlet valve.
Preferably, described salt solution reinjects on the pipeline that well and salt solution reinjects between booster and is provided with saltWater well valve and/or salt solution thermometer and/or the salt solution Pressure gauge that reinjects that reinjects that reinjects.
Preferably, on the connecting pipeline of described salt solution recovery well and salt solution recovery well pressure regulator, be provided withSalt solution recovery well valve and/or salt solution recovery well Pressure gauge and/or salt solution recovery well thermometer and/Or salt solution recovery well check-valves and/or salt solution recovery well filter.
Preferably, on described heat utilization pipeline, be provided with salt solution heat utilization supply valve, salt solution heat utilization pipelinePressure gauge, salt solution heat utilization pipeline thermometer; On the hot side outlet pipeline of salt solution heat utilization first-class heat exchanger, establishBe equipped with salt solution heat utilization inter-stage temperature controller, on the hot side outlet pipeline of salt solution heat utilization secondary heat exchanger, establishBe equipped with salt solution heat utilization recovery valve; Salt solution tank entry end pipeline be provided with salt water tank recovery valve and/Or salt solution recovered temperature adjuster and/or salt solution reclaim line thermometer and/or salt solution reclaim line pressurePower table and/or salt solution reclaim filter.
Preferably, on the connecting line that described salt water tank and salt solution reinject between booster, be provided with saltWater tank supply valve and/or salt solution filter and/or the salt solution check-valves that reinjects that reinjects.
From above technical scheme, the utility model has the advantages that:
1, the utility model provides a kind of method of efficiently utilizing carbon dioxide, can be multiple reply userWhen assorted energy requirement, reduce the discharge of carbon dioxide, and can realize collection and the storage of carbon dioxide,Further promote the benefit of utilizing of carbon dioxide.
2, the utility model utilizes the density variation of carbon dioxide and saline groundwater to realize having of carbon dioxideEffect storage, and both storages and utilize process to influence each other and mutually promote, form benign cycle, simultaneouslyFurther improve the utilization rate of geothermal energy resource.
3, the utility model electric power of can having more than needed is energy source, and also can utilize regenerative resource is systemPower source, has good energy-saving benefit. In addition, native system can be combined use with steam power plant, hasLarge-scale application potentiality are a kind of efficient, environment-friendly type systems.
Brief description of the drawings
Fig. 1 is the structural representation of multifunction energy storage system of the present utility model.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, further illustrate the utility model, should understand these enforcementsExample is only not used in restriction scope of the present utility model for the utility model is described, reading this practicalityAfter novel, those skilled in the art all fall within this Shen to the amendment of the various equivalent form of values of the present utility modelPlease claims limited range.
As shown in Figure 1, multifunction energy storage system of the present utility model, by carbon dioxide storage tank 1, twoCarbonoxide storage tank steam supply valve 2, carbon dioxide storage tank gas supply filter 3, carbon dioxide storage tank air feedCheck-valves 4, carbon dioxide storage tank supply gas pressure adjusting device 5, carbon dioxide injection well pressure table 6,Carbon dioxide injection well thermometer 7, carbon dioxide injection well valve 8, carbon dioxide injection well 9, salt solutionRecovery well 10, salt solution recovery well valve 11, salt solution recovery well Pressure gauge 12, salt solution recovery well thermometer13, salt solution recovery well check-valves 14, salt solution recovery well filter 15, salt solution recovery well pressure regulator16, salt solution recovery valve 17, salt solution heat utilization supply valve 18, salt solution reclaim line thermometer 19, salt solutionReclaim line Pressure gauge 20, salt solution reclaims filter 21, salt solution pressure recovery adjuster 22, salt solution returnsShrinkage temperature adjuster 23, salt water tank recovery valve 24, salt water tank 25, salt solution heat utilization loine pressureTable 26, salt solution heat utilization pipeline thermometer 27, salt solution heat utilization first-class heat exchanger 28, salt solution heat utilizationInter-stage temperature controller 29, salt solution heat utilization secondary heat exchanger 30, salt solution heat utilization recovery valve 31, saltHydro-thermal is utilized one-level thermal storage device 32, salt solution heat utilization secondary thermal storage device 33, and carbon dioxide recovery well 34,Carbon dioxide recovery well valve 35, carbon dioxide recovery well Pressure gauge 36, carbon dioxide recovery well thermometer37, carbon dioxide recovery well check-valves 38, carbon dioxide recovery well filter 39, the main power supply of carbon dioxideDecompressor inlet valve 40, the main power supply decompressor 41 of carbon dioxide, the main power generator 42 of carbon dioxide,The main power supply decompressor of carbon dioxide outlet valve 43, the main power supply pipeline of carbon dioxide working medium recovery valve 44, twoCarbonoxide recovery end pressure-control valve 45, carbon dioxide buffer knockout drum 46, carbon dioxide storage tank return-airValve 47, carbon dioxide one-level auxiliary power supply inlet valve 48, carbon dioxide one-level auxiliary power supply heat exchanger49, salt solution heat utilization one-level thermal storage device feeder ear inlet valve 50, salt solution heat utilization one-level thermal storage device feeder earRecovery valve 51, carbon dioxide one-level auxiliary power supply decompressor 52, carbon dioxide one-level auxiliary power supply generator53, carbon dioxide one-level auxiliary power supply decompressor outlet valve 54, carbon dioxide auxiliary power supply pipeline working mediumRecovery valve 55, carbon dioxide secondary auxiliary power supply inlet valve 56, the heat exchange of carbon dioxide secondary auxiliary power supplyDevice 57, salt solution heat utilization secondary thermal storage device feeder ear inlet valve 58, the power supply of salt solution heat utilization secondary thermal storage deviceEnd recovery valve 59, carbon dioxide secondary auxiliary power supply decompressor 60, the generating of carbon dioxide secondary auxiliary power supplyMachine 61, carbon dioxide secondary auxiliary power supply decompressor outlet valve 62, carbon dioxide heat utilization heat exchanger entersMouth valve 63, carbon dioxide heat utilization heat exchanger 64, carbon dioxide heat utilization thermal storage device 65, titanium dioxideCarbon cooling storage tank 66, carbon dioxide emergency service inlet valve 67, carbon dioxide emergency service heat exchanger68, carbon dioxide heat utilization thermal storage device feeder ear inlet valve 69, carbon dioxide heat utilization thermal storage device feeder earRecovery valve 70, carbon dioxide emergency service decompressor 71, carbon dioxide emergency service generator 72, twoCarbonoxide emergency service decompressor outlet valve 73, carbon dioxide emergency service pipeline working medium recovery valve 74,Salt solution heat utilization one-level thermal storage device heat supply end inlet valve 75, salt solution heat utilization one-level thermal storage device heat supply end reclaimsValve 76, user side 77, salt solution heat utilization secondary thermal storage device heat supply end inlet valve 78, salt solution heat utilization twoLevel thermal storage device heat supply end recovery valve 79, carbon dioxide heat utilization thermal storage device heat supply end inlet valve 80, titanium dioxideCarbon heat utilization thermal storage device heat supply end recovery valve 81, carbon dioxide cooling storage tank outlet valve 82, carbon dioxide suppliesCold pipeline temperature controller 83, carbon dioxide cooling decompressor 84, carbon dioxide supplies cold heat exchanger 85,Carbon dioxide cooling cool storage container 86, carbon dioxide cooling cool storage container cooling end entrance valve 87, carbon dioxide suppliesCold cool storage container supplies cold junction recovery valve 88, carbon dioxide cooling heat exchanger exit valve 89, the supply of salt water tankValve 90, the salt solution filter 91 that reinjects, the salt solution check-valves 92 that reinjects, the salt solution booster 93 that reinjects,The salt solution thermometer 94 that reinjects, the salt solution Pressure gauge 95 that reinjects, the salt solution well valve 96 that reinjects, salt solutionThe well 97 that reinjects forms.
Particularly, multifunction energy storage system of the present utility model, comprises carbon dioxide circulation energy storage and energy release listUnit, saline groundwater circulation energy storage and energy release unit, hot memory by using unit and cold memory by using unit, wherein:
Carbon dioxide circulation energy storage and energy release unit comprises that carbon dioxide storage tank 1, carbon dioxide storage tank supplyAtmospheric pressure adjusting device 5, carbon dioxide injection well 9, carbon dioxide recovery well 34, the main confession of carbon dioxideElectric expansion machine 42, carbon dioxide heat utilization heat exchanger 64, carbon dioxide cooling storage tank 66, carbon dioxideCooling decompressor 84, carbon dioxide buffer knockout drum 46, wherein: carbon dioxide buffer knockout drum 46The port of export is connected with the arrival end of carbon dioxide storage tank 1 by pipeline, and both connecting pipelines are provided withCarbon dioxide storage tank return-air valve 47; The port of export of carbon dioxide storage tank 1 and carbon dioxide storage tank supplyThe arrival end of atmospheric pressure adjusting device 5 is connected, and is provided with carbon dioxide storage tank steam supply valve on connecting line2; On the connecting pipeline of carbon dioxide storage tank supply gas pressure adjusting device 5 and carbon dioxide injection well 9, establishBe equipped with carbon dioxide injection well valve 8; Carbon dioxide recovery well 34 by pipeline with in parallel main for fulguriteRoad and cooling pipeline are connected.
On main power supply pipeline, be provided with the main power supply decompressor 41 of carbon dioxide, carbon dioxide recovery well 34 is logicalCross pipeline and be connected with main power supply decompressor 41 entrances of carbon dioxide, on pipeline between the two, be provided with dioxyChange the main power supply decompressor of carbon inlet valve 40; The main power supply decompressor 41 of carbon dioxide export by pipeline withReclaim line, emergency service pipeline and auxiliary power supply pipeline in parallel are connected, and the main power supply of carbon dioxide is swollenSwollen machine 41 ports of export are provided with the main power supply decompressor of carbon dioxide outlet valve 43. Reclaim on power supply pipelineBe provided with the main power supply pipeline of carbon dioxide working medium recovery valve 44. On emergency service pipeline, be provided with carbon dioxideEmergency service inlet valve 67, pipeline is by carbon dioxide emergency service heat exchanger 68 cold junctions, with dioxyChange carbon emergency service decompressor 71 arrival ends and be communicated with, carbon dioxide emergency service decompressor 71 ports of export are establishedBe equipped with carbon dioxide emergency service decompressor outlet valve 73. Auxiliary power supply pipeline comprises that two-stage in parallel is auxiliaryHelp power supply pipeline, on first order auxiliary power supply pipeline, be provided with carbon dioxide one-level auxiliary power supply inlet valve48, pipeline, through carbon dioxide one-level auxiliary power supply heat exchanger 49 cold sides, supplies with carbon dioxide one-level is auxiliaryElectric expansion machine 52 arrival ends are connected, and carbon dioxide one-level auxiliary power supply decompressor 52 ports of export are provided with twoCarbonoxide one-level auxiliary power supply decompressor outlet valve 54; On the auxiliary power supply pipeline of the second level, be provided with dioxyChange carbon secondary auxiliary power supply inlet valve 56, pipeline is through carbon dioxide secondary auxiliary power supply heat exchanger 57Cold side, is connected with carbon dioxide secondary auxiliary power supply decompressor 60 arrival ends, and carbon dioxide secondary is auxiliary to be suppliedElectric expansion machine 60 ports of export are provided with carbon dioxide secondary auxiliary power supply decompressor outlet valve 62.
On cooling pipeline, be provided with carbon dioxide heat utilization heat exchanger entrance valve 63, pipeline is through titanium dioxideCarbon heat utilization heat exchanger 64 hot sides, are connected with carbon dioxide cooling storage tank 66 bottoms; Carbon dioxide coolingStorage tank 66 is connected with carbon dioxide cooling decompressor 84 arrival ends by pipeline, communicating pipe between the twoOn road, be provided with carbon dioxide cooling storage tank outlet valve 82, carbon dioxide cooling pipeline temperature controller 83;Carbon dioxide cooling decompressor 84 ports of export are by pipeline and the cold side phase of carbon dioxide for cold heat exchanger 85Connect, the pipeline port of export is provided with carbon dioxide cooling heat exchanger exit valve 89. Carbon dioxide buffer separatesOn tank 46 arrival end pipelines, be provided with carbon dioxide recovery end pressure control valve 45.
Saline groundwater circulation energy storage and energy release unit comprises the salt solution recovery well 10, the salt that connect successively by pipelineWater recovery well pressure regulator 16, salt solution pressure recovery adjuster 22, salt water tank 25, salt solution are noted againEnter booster 93, the salt solution well 97 that reinjects; Wherein: reinject well 97 of salt solution reinjects and boosts with salt solutionPump 93 outlet is connected, and is provided with the salt solution well valve 96 that reinjects on pipeline between the two; Salt solution exploitationWell 10 is connected with salt solution recovery well pressure regulator 16 by pipeline, on connecting pipeline between the twoBe provided with salt solution recovery well valve 11; Salt solution recovery well pressure regulator 16 ports of export are by nothing in parallelHeat utilization pipeline and heat utilization pipeline regulate 22 devices to be communicated with salt solution pressure recovery; Without establishing on heat utilization pipelineBe equipped with salt solution recovery valve 17; Heat utilization pipeline successively by salt solution heat utilization first-class heat exchanger 28 hot sides andSalt solution heat utilization secondary heat exchanger 30 hot sides, on the hot side outlet pipeline of salt solution heat utilization first-class heat exchanger 28Be provided with salt solution heat utilization inter-stage temperature controller 29, salt solution heat utilization secondary heat exchanger 30 hot side outletsOn pipeline, be provided with salt solution heat utilization recovery valve 31; Salt solution pressure recovery adjuster 22 arrival end pipelines are establishedBe equipped with salt solution reclaim line thermometer 19, salt solution reclaim line Pressure gauge 20, salt solution recovery filter 21,Salt solution pressure recovery adjuster 22 ports of export are communicated with the arrival end of salt water tank 25, connection between the twoOn siphunculus road, be provided with salt solution recovered temperature adjuster 23, salt water tank recovery valve 24; Salt water tank 25The port of export be connected by the reinject arrival end of booster 93 of pipeline and salt solution, both connecting linesOn be provided with salt water tank supply valve 90.
Hot memory by using unit comprises salt solution heat utilization one-level thermal storage device 32, salt solution heat utilization secondary thermal storage device33, carbon dioxide heat utilization thermal storage device 65, wherein: salt solution heat utilization one-level thermal storage device 32 heat accumulation sides are logicalCrossing pipeline is communicated with the cold side of salt solution heat utilization first-class heat exchanger 28; Salt solution heat utilization one-level thermal storage device 32Be connected with the hot side of carbon dioxide one-level auxiliary power supply heat exchanger 49 by pipeline with hot upper lateral part, on pipelineBe provided with salt solution heat utilization one-level thermal storage device feeder ear inlet valve 50, the power supply of salt solution heat utilization one-level thermal storage deviceEnd recovery valve 51; The hot side lower part of salt solution heat utilization one-level thermal storage device 32 use is communicated with user side by pipeline,On pipeline, be provided with salt solution heat utilization one-level thermal storage device heat supply end inlet valve 75, salt solution heat utilization one-level heat accumulationDevice heat supply end recovery valve 76; Salt solution heat utilization secondary thermal storage device 33 heat accumulation sides are by pipeline and salt hydro-thermal profitWith the cold side connection of secondary heat exchanger 30; The hot upper lateral part of salt solution heat utilization secondary thermal storage device 33 use is by pipeRoad is connected with the hot side of carbon dioxide secondary auxiliary power supply heat exchanger 57, is provided with salt solution heat utilization on pipelineSecondary thermal storage device feeder ear inlet valve 58, salt solution heat utilization secondary thermal storage device feeder ear recovery valve 59; Salt solutionThe hot side lower part of heat utilization secondary thermal storage device 33 use is communicated with user side 77 by pipeline, on pipeline, is provided withSalt solution heat utilization secondary thermal storage device heat supply end inlet valve 78, salt solution heat utilization secondary thermal storage device heat supply end reclaimValve 79; Carbon dioxide heat utilization thermal storage device 65 heat accumulation sides are by pipeline and carbon dioxide heat utilization heat exchanger64 cold side is communicated with; The hot side left-half of carbon dioxide heat utilization thermal storage device 65 use is by pipeline and dioxyThe hot side of changing carbon emergency service heat exchanger 68 is connected, and is provided with carbon dioxide heat utilization thermal storage device and supplies on pipelineElectricity end entrance valve 69, carbon dioxide heat utilization thermal storage device feeder ear recovery valve 70; Carbon dioxide heat utilization storageThe hot side right half part of hot device 65 use is communicated with user side 77 by pipeline, is provided with carbon dioxide on pipelineHeat utilization thermal storage device heat supply end inlet valve 80, carbon dioxide heat utilization thermal storage device heat supply end recovery valve 81.
Cold memory by using unit comprises carbon dioxide cooling cool storage container 86, wherein: the storage of carbon dioxide cooling is coldDevice 86 stores up cold side and is connected for the hot side of cold heat exchanger 85 with carbon dioxide by pipeline; Carbon dioxide coolingCool storage container 86 use cold sides are communicated with user side by pipeline, are provided with carbon dioxide cooling cool storage container on pipelineCooling end entrance valve 87, carbon dioxide cooling cool storage container are for cold junction recovery valve 88.
The port of export of carbon dioxide storage tank 1 and carbon dioxide storage tank supply gas pressure adjusting device 5 entrancesOn the connecting line of end, be provided with carbon dioxide storage tank gas supply filter 3, carbon dioxide storage tank air feedCheck-valves 4. Carbon dioxide storage tank supply gas pressure adjusting device 5 is communicated with carbon dioxide injection well 9On pipeline, be provided with carbon dioxide injection well pressure table 6, carbon dioxide injection well thermometer 7. Carbon dioxideOn recovery well 34 export pipelines with between main power supply pipeline in parallel and emergency service pipeline, be provided with dioxyChange carbon recovery well valve 35, carbon dioxide recovery well Pressure gauge 36, carbon dioxide recovery well thermometer 37,Carbon dioxide recovery well check-valves 38, carbon dioxide recovery well filter 39.
The emergency service pipeline port of export is provided with carbon dioxide emergency service pipeline working medium recovery valve 74. AuxiliaryThe power supply pipeline port of export is provided with carbon dioxide auxiliary power supply pipeline working medium recovery valve 55. The salt solution well that reinjects97 and the pipeline that reinjects between booster 93 outlet of salt solution on be provided with salt solution reinject thermometer 94,The salt solution Pressure gauge 95 that reinjects. The communicating pipe of salt solution recovery well 10 and salt solution recovery well pressure regulator 16On road, be provided with salt solution recovery well Pressure gauge 12, salt solution recovery well thermometer 13, salt solution recovery well check-valves14, salt solution recovery well filter 15.
On heat utilization pipeline, be provided with salt solution heat utilization supply valve 18, salt solution heat utilization loine pressure table 26,Salt solution heat utilization pipeline thermometer 27. The port of export of salt water tank 25 and the salt solution booster 93 that reinjectsOn connecting line between arrival end, be provided with salt solution filter 91, the salt solution check-valves 92 that reinjects that reinjects.
Specific operation process is:
In the energy storage stage, carbon dioxide storage tank steam supply valve 2 is opened, and carbon dioxide storage tank 1 is supplied dioxyChange carbon and pass through successively carbon dioxide storage tank steam supply valve 2, carbon dioxide storage tank gas supply filter 3 and twoCarbonoxide storage tank air feed check-valves 4, enters carbon dioxide storage tank supply gas pressure adjusting device 5. Wherein,The impurity that carbon dioxide storage tank gas supply filter 3 filters in carbon dioxide, carbon dioxide storage tank air feedCheck-valves 4 prevents that carbon dioxide from refluxing, and carbon dioxide storage tank supply gas pressure adjusting device 5 regulates dioxyChange the pressure of carbon so that carbon dioxide injects underground with suitable pressure. Carbon dioxide storage tank is for air pressureAfter apparatus for adjusting force 5, be provided with carbon dioxide injection well pressure table 6 and carbon dioxide injection well thermometer 7,In order to observe the pressure and temperature that injects underground carbon dioxide. After pressure regulates, carbon dioxide injectionWell valve 8 is opened, and carbon dioxide enters underground storage layer through carbon dioxide injection well 9.
Underground storage layer can be considered closed container, wherein contains a large amount of salt solution. Salt solution absorbs underground heat,Can reach uniform temperature (200-300 DEG C). The injection of high-pressure carbon dioxide occupies certain space, promotes saltWater flow. For ensureing that carbon dioxide is in underground storage, salt solution recovery well valve 11 is opened, part salt solutionBe delivered on the ground by underground by salt solution recovery well 10. Salt solution passes through salt solution recovery well check-valves 14 successively,Salt solution recovery well filter 15, enters salt solution recovery well pressure regulator 16. Wherein, salt solution recovery wellOn 10 pipelines, be provided with salt solution recovery well Pressure gauge 12 and salt solution recovery well thermometer 13, for observing saltWater pressure and temperature, salt solution recovery well check-valves 14 refluxes for preventing salt solution, salt solution recovery well filter15 for filtered brine impurity. After regulating pressure through salt solution recovery well pressure regulator 16, rootCan the stage whether to utilize heat in salt solution according to releasing, exist:
Process one, in the time that heat in salt solution does not need to be utilized, salt solution recovery valve 17 is opened, salt hydro-thermal profitClose with supply valve 18, salt water tank recovery valve 24 is opened, and leaves salt solution recovery well pressure regulator 16Salt solution through salt solution recovery valve 17, through Pipe transfer, reclaim filter 21, salt through salt solution successivelyWater pressure recovery adjuster 22, salt solution recovered temperature adjuster 23, salt water tank recovery valve 24, entersStorage in salt water tank 25. Wherein, salt solution reclaims filter 21 for filtered brine impurity, salt solutionThe pressure of pressure recovery adjuster 22 when regulating salt solution to enter salt water tank 25, salt solution recovered temperatureTemperature when adjuster 23 enters salt water tank 25 for regulating. Before reclaiming filter 21, establishes by salt solutionBe equipped with salt solution reclaim line thermometer 19 and salt solution reclaim line Pressure gauge 20, for observing the pressure of salt solutionPower and temperature.
Process two, in the time that in salt solution, caloric requirement is utilized, salt solution recovery valve 17 is closed, salt solution heat utilizationSupply valve 18 is opened, and salt solution heat utilization recovery valve 31 is opened, and salt water tank recovery valve 24 is opened, and leavesThe salt solution of salt solution recovery well pressure regulator 16, through salt solution heat utilization supply valve 18, first enters salt solutionThe 28 heat exchange coolings of heat utilization first-class heat exchanger, heat is collected and is deposited by salt solution heat utilization one-level thermal storage device 32Storage. Wherein, salt solution heat utilization first-class heat exchanger 28 entrances are provided with salt solution heat utilization loine pressure table 26With salt solution heat utilization pipeline thermometer 27, the warm pressure and temperature when monitoring salt solution heat utilization. Salt solutionBetween heat utilization first-class heat exchanger 28 and salt solution heat utilization secondary heat exchanger 30, on pipeline, be provided with salt hydro-thermalUtilize inter-stage temperature controller 29, for controlling salt solution heat utilization first-class heat exchanger 28 outlet temperatures. WithAfter, salt solution heat utilization first-class heat exchanger 28 exports salt solution and enters salt solution heat utilization secondary heat exchanger 30,Wherein heat exchange cooling, heat is collected by salt solution heat utilization secondary thermal storage device 33. After heat exchange finishes, salt solution warpSupersalt hydro-thermal is utilized recovery valve 31, reclaims filter 21, salt solution pressure recovery adjuster successively through salt solution22, salt solution recovered temperature adjuster 23, salt water tank recovery valve 24, enters storage in salt water tank 25.
To sum up, in the energy storage stage, carbon dioxide is stored in underground after compression, absorbs geothermal energy temperature literHigh. Consider the dissolubility of carbon dioxide in salt solution and the difference of density between the two, except there being few portionDivide carbon dioxide to be dissolved in outside salt solution, most of carbon dioxide can exist with salt water stratification, and this will be conducive to releaseThe exploitation of energy stage ground carbon dioxide. In addition the heat energy in the salt solution of energy storage stage exploitation also can basisDemand is collected and is stored.
Release the energy stage, system can be supplied electric energy, heat energy and cold energy according to user's request. The supply bag of electric energyDraw together following process:
Process one, main power supply process. Carbon dioxide recovery well valve 35 is opened, and the main power supply of carbon dioxide is swollenSwollen machine inlet valve 40 is opened, and HTHP carbon dioxide enters carbon dioxide recovery well 34, logical successivelyCross carbon dioxide recovery well valve 35, carbon dioxide recovery well check-valves 38, carbon dioxide recovery well is filteredDevice 39, the main power supply decompressor of carbon dioxide inlet valve 40 enters the main power supply decompressor 41 of carbon dioxide.Wherein, on carbon dioxide recovery well 34 pipelines, be provided with carbon dioxide recovery well Pressure gauge 36 and titanium dioxideCarbon recovery well thermometer 37, for detection of the pressure and temperature of carbon dioxide, carbon dioxide recovery well non-returnValve 38 refluxes for preventing carbon dioxide, and carbon dioxide recovery well filter 39 is for filtering carbon dioxideImpurity in fluid. The acting of expanding in the main power supply decompressor 41 of carbon dioxide of HTHP carbon dioxide, twoThe main power supply decompressor 41 of carbonoxide drives the main power generator 42 of carbon dioxide externally to generate electricity. Carbon dioxideMain power supply decompressor outlet valve 43 is opened, and the main power supply pipeline of carbon dioxide working medium recovery valve 44 is opened,Carbon dioxide after expanding passes through the main power supply decompressor of carbon dioxide outlet valve 43, carbon dioxide successivelyAfter main power supply pipeline working medium recovery valve 44 and carbon dioxide recovery end pressure control valve 45 are adjusted pressure,Enter carbon dioxide buffer knockout drum 46 and carry out impurity separation, carbon dioxide storage tank return-air valve 47 subsequentlyOpen, carbon dioxide is reclaimed and is deposited by carbon dioxide storage tank 1 after carbon dioxide storage tank return-air valve 47Storage.
Process two, auxiliary power supply process. When main power supply process supply electric weight can not meet user to electric powerWhen demand, the main power supply decompressor 41 of carbon dioxide exports carbon dioxide and will enter auxiliary power supply process volume is providedOuter electric power.
Auxiliary power supply process comprises one-level power supply process and secondary power supply process, and one-level power supply process utilizes saltHydro-thermal is utilized the storage heat in one-level thermal storage device 32, and secondary power supply process utilizes salt solution heat utilization secondary heat accumulationStorage heat in device 33. Detailed process is:
In one-level power supply process, carbon dioxide one-level auxiliary power supply inlet valve 48 is opened, the acting of expandingAfter carbon dioxide through carbon dioxide one-level auxiliary power supply inlet valve 48, enter carbon dioxide one-level auxiliaryHelp power supply heat exchanger 49. Meanwhile, salt solution heat utilization one-level thermal storage device feeder ear inlet valve 50 is opened, saltHydro-thermal utilizes one-level thermal storage device feeder ear recovery valve 51 to open, and salt solution heat utilization one-level thermal storage device 32 utilizesIts storing heat is delivered to carbon dioxide one-level auxiliary power supply heat exchanger 49 by heat-carrying agent circulation. Carbon dioxideIn carbon dioxide one-level auxiliary power supply heat exchanger 49, absorb after heat, enter the auxiliary confession of carbon dioxide one-levelElectric expansion machine 52 expands and does work, and carbon dioxide one-level auxiliary power supply decompressor 52 drives carbon dioxide one-levelAuxiliary power supply generator 53 externally generates electricity. Subsequently, carbon dioxide one-level auxiliary power supply decompressor outlet valve54 open, and carbon dioxide auxiliary power supply pipeline working medium recovery valve 55 is opened, the carbon dioxide after expandingPass through successively carbon dioxide one-level auxiliary power supply decompressor outlet valve 54, carbon dioxide auxiliary power supply pipelineWorking medium recovery valve 55 and carbon dioxide recovery end pressure control valve 45 enter dioxy after adjusting pressureChange carbon buffering knockout drum 46 and carry out impurity separation, carbon dioxide storage tank return-air valve 47 is opened subsequently, and twoCarbonoxide reclaims storage by carbon dioxide storage tank 1 after carbon dioxide storage tank return-air valve 47.
In secondary power supply process, carbon dioxide secondary auxiliary power supply inlet valve 56 is opened, the acting of expandingAfter carbon dioxide through carbon dioxide secondary auxiliary power supply inlet valve 56, enter carbon dioxide secondary auxiliaryHelp power supply heat exchanger 57. Meanwhile, salt solution heat utilization secondary thermal storage device feeder ear inlet valve 58 is opened, saltHydro-thermal utilizes secondary thermal storage device feeder ear recovery valve 59 to open, and salt solution heat utilization secondary thermal storage device 33 utilizesIts storing heat is delivered to carbon dioxide secondary auxiliary power supply heat exchanger 57 by heat-carrying agent circulation. Carbon dioxideIn carbon dioxide secondary auxiliary power supply heat exchanger 57, absorb after heat, enter the auxiliary confession of carbon dioxide secondaryElectric expansion machine 60 expands and does work, and carbon dioxide secondary auxiliary power supply decompressor 60 drives carbon dioxide secondaryAuxiliary power supply generator 61 externally generates electricity. Subsequently, carbon dioxide secondary auxiliary power supply decompressor outlet valve62 open, and carbon dioxide auxiliary power supply pipeline working medium recovery valve 55 is opened, the carbon dioxide after expandingPass through successively carbon dioxide secondary auxiliary power supply decompressor outlet valve 62, carbon dioxide auxiliary power supply pipelineWorking medium recovery valve 55 and carbon dioxide recovery end pressure control valve 45 enter dioxy after adjusting pressureChange carbon buffering knockout drum 46 and carry out impurity separation, carbon dioxide storage tank return-air valve 47 is opened subsequently, and twoCarbonoxide reclaims storage by carbon dioxide storage tank 1 after carbon dioxide storage tank return-air valve 47.
It is pointed out that one-level power supply process and secondary power supply process can carry out according to electricity needs simultaneouslyOr carry out separately, while carrying out, system can realize maximum auxiliary power output simultaneously, while carrying out separately, can selectOne-level power supply process or secondary power supply process, the selection of power supply process need to consider user's heat to be neededThe condition of pleading, to avoid the deficiency of heating load.
Process three, emergency service process. When main power supply process and auxiliary power supply process supply electric weight still can notWhile meeting user to the demand of electric power, can start emergency service process. Now, carbon dioxide heat utilization is changedHot device inlet valve 63 is opened, from the HTHP carbon dioxide of carbon dioxide recovery well 34 through twoCarbonoxide heat utilization heat exchanger entrance valve 63, enters carbon dioxide heat utilization heat exchanger 64. Carbon dioxideThe heat carrying in carbon dioxide heat utilization heat exchanger 64 by from carbon dioxide heat utilization thermal storage device 65Working media absorb and store. Carbon dioxide after heat exchange enters carbon dioxide cooling storage tank 66 and stores.In the time of needs emergency service, carbon dioxide emergency service inlet valve 67 is opened, and the main power supply of carbon dioxide is swollenSwollen machine 41 exports carbon dioxide successively by the main power supply decompressor of carbon dioxide outlet valve 43, titanium dioxideCarbon emergency service inlet valve 67 enters carbon dioxide emergency service heat exchanger 68. Meanwhile, carbon dioxideHeat utilization thermal storage device feeder ear inlet valve 69 is opened, carbon dioxide heat utilization thermal storage device feeder ear recovery valve70 open, and carbon dioxide heat utilization thermal storage device 65 utilizes heat-carrying agent circulation that its storing heat is delivered to twoCarbonoxide emergency service heat exchanger 68. Carbon dioxide absorbs in carbon dioxide emergency service heat exchanger 68After heat, enter the 71 expansion actings of carbon dioxide emergency service decompressor, carbon dioxide emergency service expandsMachine 71 drives carbon dioxide emergency service generator 72 externally to generate electricity. Subsequently, carbon dioxide emergency serviceDecompressor outlet valve 73 is opened, and carbon dioxide emergency service pipeline working medium recovery valve 74 is opened, and expandsCarbon dioxide afterwards passes through carbon dioxide emergency service decompressor outlet valve 73 successively, and carbon dioxide is tightAfter anxious power supply pipeline working medium recovery valve 74 and carbon dioxide recovery end pressure control valve 45 are adjusted pressure,Enter carbon dioxide buffer knockout drum 46 and carry out impurity separation, carbon dioxide storage tank return-air valve 47 subsequentlyOpen, carbon dioxide is reclaimed and is deposited by carbon dioxide storage tank 1 after carbon dioxide storage tank return-air valve 47Storage.
In heat supply side, owing to being stored in as required salt in the energy storage stage from the heat of salt solutionHydro-thermal is utilized in one-level thermal storage device 32 and salt solution heat utilization secondary thermal storage device 33, simultaneously in the time of emergency serviceHave from the heat of HTHP carbon dioxide and be stored in carbon dioxide heat utilization thermal storage device 65. Therefore,The supply of system heat energy comprises following process:
Utilize in salt solution heat utilization one-level thermal storage device 32 and store hot one-level heat supplying process. In the time of needs heat supply,Salt solution heat utilization one-level thermal storage device heat supply end inlet valve 75 is opened, salt solution heat utilization one-level thermal storage device heat supply endRecovery valve 76 is opened, and thermal medium transfers heat to user side 77 with pipeline circulation A.
Utilize in salt solution heat utilization secondary thermal storage device 33 and store hot secondary heat supplying process. In the time of needs heat supply,Salt solution heat utilization secondary thermal storage device heat supply end inlet valve 78 is opened, salt solution heat utilization secondary thermal storage device heat supply endRecovery valve 79 is opened, and thermal medium transfers heat to user side 77 with pipeline circulation B.
Utilize and in carbon dioxide heat utilization thermal storage device 65, store hot emergency heat supply process. In the time of needs heat supply,Carbon dioxide heat utilization thermal storage device heat supply end inlet valve 80 is opened, carbon dioxide heat utilization thermal storage device heat supply endRecovery valve 81 is opened, and thermal medium transfers heat to user side 77 with pipeline circulation C.
It is pointed out that due to salt solution heat utilization one-level thermal storage device 32, salt solution heat utilization secondary thermal storage device33 and carbon dioxide heat utilization thermal storage device 65 in storing heat need to take into account supply of electric power and heat supply,Therefore can be according to user's request flexible modulation supply.
In cold supply side, carbon dioxide cooling storage tank outlet valve 82 is opened, carbon dioxide cooling storage tank66 supply cryogenic high pressure carbon dioxide after carbon dioxide cooling pipeline temperature controller 83 regulating and controlling temperatures,Enter carbon dioxide cooling decompressor 84 and expand, the outlet carbon dioxide temperature that expands further reduces, and entersCarbon dioxide is for cold heat exchanger 85. Working medium from carbon dioxide cooling cool storage container 86 enters carbon dioxideThe carbon dioxide lower for cold heat exchanger 85 and temperature carries out exchange heat, absorbs cold storage. Work as useWhen family end 77 exists refrigeration requirement, carbon dioxide cooling cool storage container cooling end entrance valve 87 is opened, dioxyChange carbon cooling cool storage container and open for cold junction recovery valve 88, cold medium passes to user with pipeline circulation by coldEnd 77. In addition, carbon dioxide cooling heat exchanger exit valve 89 is opened, carbon dioxide emergency service pipeRoad working medium recovery valve 74 is opened, and the carbon dioxide after heat exchange cooling passes through the heat exchange of carbon dioxide cooling successivelyDevice outlet valve 89, carbon dioxide emergency service pipeline working medium recovery valve 74 and carbon dioxide recovery endAfter pressure-control valve 45 is adjusted pressure, enter carbon dioxide buffer knockout drum 46 and carry out impurity separation,Carbon dioxide storage tank return-air valve 47 is opened subsequently, and carbon dioxide is through carbon dioxide storage tank return-air valveAfter 47, reclaim storage by carbon dioxide storage tank 1.
It should be noted that when releasing can the stage utilize from underground mining carbon dioxide time underground storagePressure in layer can reduce along with the exploitation of carbon dioxide, is unfavorable for lasting exploitation and the profit of carbon dioxideWith. Now can open salt water tank supply valve 90, the salt solution well valve 96 that reinjects is opened, salt water tank25 supply salt solution, pass through salt water tank supply valve 90 successively, the salt solution filter 91 that reinjects, and salt solution is againInject check-valves 92, salt solution booster 93 and the salt solution well valve 96 that reinjects that reinjects, by salt solution againInjection Well 97 injects underground. Wherein, salt solution reinjects filter 91 for filtered brine impurity, salt solutionThe check-valves 92 that reinjects refluxes for preventing salt solution, and salt solution reinjects booster 93 for promoting salt hydraulic pressurePower, ensures reinjecting of salt solution. Simultaneously salt solution booster 93 outlets of reinjecting are provided with the salt solution temperature of reinjectingDegree table 94 and the salt solution Pressure gauge 95 that reinjects, for detection of with the temperature and pressure of controlling salt solution. High pressureReinjecting of salt solution can ensure the pressure stability in underground storage layer, ensures the production efficiency of carbon dioxide.
In addition, release and can reinjecting of stage salt solution can consume certain electric energy, this part electric energy can be from beingSystem generated energy or from electric power more than needed and regenerative resource etc. This system can also realize in the energy storage stageReinjecting of salt solution, now can utilize electric power more than needed or regenerative resource is energy source, by salt water tankIn 25, the salt solution of storage injects underground after boosting. Except boost in pressure to salt solution require higher, energy storage rankThe underground injection process of section salt solution is basically identical with the underground injection process of releasing energy stage salt solution. The energy storage stageReinjecting of salt solution will further promote underground storage stressor layer, can ensure equally the exploitation of carbon dioxideEfficiency.
The above is only preferred embodiment of the present utility model, it should be pointed out that for the artThose of ordinary skill, not departing under the prerequisite of the utility model principle, can also make someImprovements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (10)
1. a multifunction energy storage system, comprises that carbon dioxide circulation energy storage and energy release unit, saline groundwater followRing energy storage and energy release unit, hot memory by using unit and cold memory by using unit, is characterized in that,
--described carbon dioxide circulation energy storage and energy release unit, comprises carbon dioxide buffer knockout drum, titanium dioxideCarbon storage tank, carbon dioxide storage tank supply gas pressure adjusting device, carbon dioxide injection well, carbon dioxideRecovery well, the main power supply decompressor of carbon dioxide, carbon dioxide heat utilization heat exchanger, the storage of carbon dioxide coolingTank, carbon dioxide cooling decompressor, wherein, the port of export of carbon dioxide buffer knockout drum is complied with by pipelineInferior to carbon dioxide storage tank, carbon dioxide storage tank supply gas pressure adjusting device and carbon dioxide injection wellArrival end be connected; Carbon dioxide recovery well is by pipeline and main power supply pipeline and cooling pipeline phase in parallelBe communicated with, wherein:
On described main power supply pipeline, be provided with the main power supply decompressor of carbon dioxide, carbon dioxide recovery well is passed throughPipeline after the main power supply decompressor of carbon dioxide with reclaim line in parallel, emergency service pipeline and auxiliary confessionFulgurite road is connected, wherein: described emergency service pipeline is by carbon dioxide emergency service heat exchanger cold sideAfter, be communicated with carbon dioxide emergency service decompressor arrival end; Described auxiliary power supply pipeline comprises in parallelTwo-stage auxiliary power supply pipeline, first order auxiliary power supply pipeline is cold through carbon dioxide one-level auxiliary power supply heat exchangerRear flank is connected with carbon dioxide one-level auxiliary power supply decompressor arrival end, and second level auxiliary power supply pipeline is through twoAfter carbonoxide secondary auxiliary power supply heat exchanger cold side with carbon dioxide secondary auxiliary power supply decompressor arrival end phaseConnect; Described reclaim line, carbon dioxide emergency service decompressor, carbon dioxide one-level auxiliary power supply expandThe port of export of machine and carbon dioxide secondary auxiliary power supply decompressor all with the entrance of carbon dioxide buffer knockout drumEnd is communicated with;
Described cooling pipeline is through carbon dioxide heat utilization exchanger heat rear flank, with carbon dioxide cooling bottom of storage tankPortion is connected; Carbon dioxide cooling storage tank by pipeline through carbon dioxide cooling decompressor, carbon dioxide coolingAfter the cold side of heat exchanger, be communicated with the arrival end of carbon dioxide buffer knockout drum;
--described saline groundwater circulation energy storage and energy release unit, comprises salt solution recovery well, salt solution recovery well pressureReinject booster and salt solution of adjuster, salt solution pressure recovery adjuster, salt water tank, salt solution reinjectsWell, wherein: salt solution recovery well is through salt solution recovery well pressure regulator, in parallel without heat utilization pipeline and heatUtilize pipeline, salt solution pressure recovery adjuster, salt water tank, salt solution reinject after booster with salt solution againInjection Well is connected; Wherein: described heat utilization pipeline successively by the hot side of salt solution heat utilization first-class heat exchanger,After the hot side of salt solution heat utilization secondary heat exchanger and salt solution pressure recovery adjuster, be communicated with salt water tank;
--described hot memory by using unit, comprises salt solution heat utilization one-level thermal storage device, salt solution heat utilization secondaryThermal storage device, carbon dioxide heat utilization thermal storage device, wherein: described salt solution heat utilization one-level thermal storage device heat accumulation sideBe communicated with heat for salt solution heat utilization one-level thermal storage device with the cold side of salt solution heat utilization first-class heat exchanger by pipelineSide is connected with the hot side of carbon dioxide one-level auxiliary power supply heat exchanger by pipeline; Described salt solution heat utilization twoLevel thermal storage device heat accumulation side is communicated with the cold side of salt solution heat utilization secondary heat exchanger by pipeline, salt solution heat utilizationSecondary thermal storage device is connected with the hot side of carbon dioxide secondary auxiliary power supply heat exchanger by pipeline by hot side; InstituteStating carbon dioxide heat utilization thermal storage device heat accumulation side connects by the cold side of pipeline and carbon dioxide heat utilization heat exchangerLogical, carbon dioxide heat utilization thermal storage device by hot side by the heat of pipeline and carbon dioxide emergency service heat exchangerSide is connected;
--described cold memory by using unit comprises carbon dioxide cooling cool storage container, wherein: carbon dioxide coolingCool storage container storage cold side is connected for the hot side of cold heat exchanger with carbon dioxide by pipeline, the storage of carbon dioxide coolingCooler is communicated with user side by pipeline with cold side.
2. multifunction energy storage system according to claim 1, is characterized in that, described carbon dioxideBuffering knockout drum arrival end is provided with carbon dioxide recovery end pressure control valve; Described carbon dioxide buffer dividesBe provided with carbon dioxide storage tank return-air valve from the connecting pipeline between tank and carbon dioxide storage tank; DescribedOn connecting line between carbon dioxide storage tank and carbon dioxide storage tank supply gas pressure adjusting device, arrangeThere are carbon dioxide storage tank steam supply valve and/or carbon dioxide storage tank gas supply filter and/or titanium dioxideCarbon storage tank air feed check-valves; Carbon dioxide storage tank supply gas pressure adjusting device and carbon dioxide injection wellBetween connecting pipeline on be provided with carbon dioxide injection well valve and/or carbon dioxide injection well pressure table,And/or carbon dioxide injection well thermometer.
3. multifunction energy storage system according to claim 1, is characterized in that, described reclaim lineOn be provided with the main power supply pipeline of carbon dioxide working medium recovery valve.
4. multifunction energy storage system according to claim 1, is characterized in that, described carbon dioxideRecovery well export pipeline be provided with carbon dioxide recovery well valve and/or carbon dioxide recovery well Pressure gauge,And/or carbon dioxide recovery well thermometer and/or carbon dioxide recovery well check-valves and/or carbon dioxideRecovery well filter; Arrival end and the port of export of the main power supply decompressor of carbon dioxide are provided with valve.
5. multifunction energy storage system according to claim 1, is characterized in that, described emergency serviceThe arrival end of pipeline is provided with carbon dioxide emergency service inlet valve, and the port of export is provided with working medium recovery valve;The carbon dioxide emergency service decompressor port of export is provided with outlet valve.
6. multifunction energy storage system according to claim 1, is characterized in that, described auxiliary power supplyThe pipeline port of export is provided with working medium recovery valve; On first and second grade of auxiliary power supply pipeline, be provided with inlet valveDoor, the carbon dioxide I and II auxiliary power supply decompressor port of export is provided with outlet valve; And/or
On described cooling pipeline, be provided with carbon dioxide heat utilization heat exchanger entrance valve; Carbon dioxide coolingOn connecting pipeline between storage tank and carbon dioxide cooling decompressor, be provided with the outlet of carbon dioxide cooling storage tankValve and/or carbon dioxide cooling pipeline temperature controller; Carbon dioxide is for the cold side port of export of cold heat exchangerBe provided with outlet valve.
7. multifunction energy storage system according to claim 1, is characterized in that, described salt solution is noted againEnter to be provided with on the pipeline that well and salt solution reinjects between booster salt solution reinject well valve and/or salt solutionThermometer and/or the salt solution Pressure gauge that reinjects reinjects.
8. multifunction energy storage system according to claim 1, is characterized in that, described salt solution exploitationOn the connecting pipeline of well and salt solution recovery well pressure regulator, be provided with salt solution recovery well valve and/or salt solutionRecovery well Pressure gauge and/or salt solution recovery well thermometer and/or salt solution recovery well check-valves and/or saltWater recovery well filter.
9. multifunction energy storage system according to claim 1, is characterized in that, described heat utilization pipeOn road, be provided with salt solution heat utilization supply valve, salt solution heat utilization loine pressure table, salt solution heat utilization pipeline temperatureDegree table; On the hot side outlet pipeline of salt solution heat utilization first-class heat exchanger, be provided with the control of salt solution heat utilization inter-stage temperatureDevice processed, is provided with salt solution heat utilization recovery valve on the hot side outlet pipeline of salt solution heat utilization secondary heat exchanger; SaltWater tank arrival end pipeline be provided with salt water tank recovery valve and/or salt solution recovered temperature adjuster and/Or salt solution reclaim line thermometer and/or salt solution reclaim line Pressure gauge and/or salt solution recovery filter.
10. multifunction energy storage system according to claim 1, is characterized in that, described salt water tankAnd on the connecting line that salt solution reinjects between booster, be provided with salt water tank supply valve and/or salt solution againInject filter and/or the salt solution check-valves that reinjects.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105332746A (en) * | 2015-11-23 | 2016-02-17 | 中国科学院工程热物理研究所 | Multifunctional energy storage system |
| CN112524841A (en) * | 2020-11-30 | 2021-03-19 | 上海发电设备成套设计研究院有限责任公司 | Heat pump energy storage system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105332746A (en) * | 2015-11-23 | 2016-02-17 | 中国科学院工程热物理研究所 | Multifunctional energy storage system |
| CN112524841A (en) * | 2020-11-30 | 2021-03-19 | 上海发电设备成套设计研究院有限责任公司 | Heat pump energy storage system |
| CN112524841B (en) * | 2020-11-30 | 2022-08-30 | 上海发电设备成套设计研究院有限责任公司 | A heat pump energy storage system |
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