CN109412183A - A kind of integrated power generation system and method for combining oxygen-enriched combusting and liquid oxygen energy storage - Google Patents
A kind of integrated power generation system and method for combining oxygen-enriched combusting and liquid oxygen energy storage Download PDFInfo
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- CN109412183A CN109412183A CN201811399902.1A CN201811399902A CN109412183A CN 109412183 A CN109412183 A CN 109412183A CN 201811399902 A CN201811399902 A CN 201811399902A CN 109412183 A CN109412183 A CN 109412183A
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- oxygen
- enriched combusting
- liquid
- power
- power generation
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- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title claims abstract description 98
- 239000001301 oxygen Substances 0.000 title claims abstract description 98
- 229910052760 oxygen Inorganic materials 0.000 title claims abstract description 98
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 title claims abstract description 46
- 238000010248 power generation Methods 0.000 title claims abstract description 30
- 238000004146 energy storage Methods 0.000 title claims abstract description 20
- 238000000034 method Methods 0.000 title claims abstract description 16
- 238000000926 separation method Methods 0.000 claims abstract description 25
- 238000002485 combustion reaction Methods 0.000 claims abstract description 10
- 239000007788 liquid Substances 0.000 claims abstract description 6
- 230000005611 electricity Effects 0.000 claims description 21
- 238000006243 chemical reaction Methods 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 4
- 238000007599 discharging Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for AC mains or AC distribution networks
- H02J3/28—Arrangements for balancing of the load in a network by storage of energy
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01B—MACHINES OR ENGINES, IN GENERAL OR OF POSITIVE-DISPLACEMENT TYPE, e.g. STEAM ENGINES
- F01B23/00—Adaptations of machines or engines for special use; Combinations of engines with devices driven thereby
- F01B23/10—Adaptations for driving, or combinations with, electric generators
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Separation By Low-Temperature Treatments (AREA)
Abstract
本发明公开了一种联合富氧燃烧和液态氧储能的集成发电系统及方法，该系统包括空分装置、氧液化装置、液氧储罐、蒸发器、富氧燃烧发电装置和电网；本发明将液态氧储能和富氧燃烧发电集成到同一系统和工艺流程中，不存在传统液态空气或液态氧储能系统中放电时所需的热能转换为电能的二次转换过程，因此，本发明具有系统简单、储能效率高和经济性优等优点，能够显著提升富氧燃烧发电厂的负荷调节能力和经济性。
The invention discloses an integrated power generation system and method combining oxygen-enriched combustion and liquid oxygen energy storage. The system includes an air separation device, an oxygen liquefaction device, a liquid oxygen storage tank, an evaporator, an oxygen-enriched combustion power generation device and a power grid; The invention integrates liquid oxygen energy storage and oxygen-enriched combustion power generation into the same system and process flow, and there is no secondary conversion process for converting the thermal energy required for discharge into electrical energy in traditional liquid air or liquid oxygen energy storage systems. The invention has the advantages of simple system, high energy storage efficiency and excellent economy, and can significantly improve the load regulation capability and economy of the oxygen-enriched combustion power plant.
Description
Skill field
The invention belongs to oxygen-enriched combustings and energy storing and electricity generating field, and in particular to a kind of joint oxygen-enriched combusting and liquid oxygen energy storage
Integrated power generation system and method.
Background technique
With the sternness increasingly of global warming problem, the CO of fossil fired power plant how is reduced2Discharge has become complete
The hot spot of World Focusing.In fossil-fueled power plant CO2In emission-reduction technology, oxygen-enriched combusting (O2/CO2Combustion technology) it is considered as one
The most promising CO of kind2Emission-reduction technology.
But the air separation plant and CO of oxygen-enriched combusting power plant2The high energy consumption for compressing equipment for purifying, so that oxygen-enriched combusting power plant
Generating efficiency have a greatly reduced quality, compared with conventional air coal-fired power plant, decrease of power generation about 8~13%.In addition, for richness
For oxygen coal-fired power plant, in order to run each equipment economical and efficient, further increases generating efficiency and guarantee CO in flue gas2Catch
Collect recovering effect, the optimal method of operation is to make the oxygen-enriched combusting power plant only basic load operation of band, and be not involved in network system
Peak regulation and frequency modulation need.However, this is conflicting with the operation characteristic of entire network system.It is rich that disadvantages mentioned above has become limitation
The main bottleneck of oxygen combustion technology development and application.
Summary of the invention
The present invention is for space division and CO existing for oxygen-enriched combusting power plant2Compress equipment for purifying energy consumption height and system power generation effect
The low problem of rate proposes a kind of integrated power generation system and method for combining oxygen-enriched combusting and liquid oxygen energy storage, and the present invention is by liquid
The energy storage of state oxygen and oxygen-enriched combusting power generation are integrated into same system and process flow, and there is no conventional liquid air or liquid oxygen to store up
Required thermal energy is converted to the two times transfer process of electric energy when discharging in energy system, therefore, the present invention simple, energy storage with system
The advantages such as high-efficient and economy is excellent, can be obviously improved the Load Regulation ability and economy in oxygen-enriched combusting power plant.
In order to achieve the above objectives, the present invention adopts the following technical scheme:
A kind of described joint oxygen-enriched combusting and the integrated power generation system of liquid oxygen energy storage include air separation unit 1, oxygen liquefaction
Device 2, liquid oxygen storage tank 3, evaporator 4, oxygen-enriched combusting power generator 5 and power grid 6；
The oxygen outlet of the air separation unit 1 oxygen intake with oxygen liquefying plant 2 and oxygen-enriched combusting power generator 5 respectively
It is connected；The liquid oxygen outlet of oxygen liquefying plant 2 is connected with the liquid oxygen entrance of liquid oxygen storage tank 3；Liquid oxygen storage tank 3 liquid oxygen outlet with
The oxygen intake of evaporator 4 is connected；The oxygen outlet of evaporator 4 is connected with the oxygen intake of oxygen-enriched combusting power generator 5,
The outlet connection power grid 6 and air separation unit 1 of oxygen-enriched combusting power generator 5.
Pressure store in the liquid oxygen storage tank 3 is 1~5bar, saturation temperature of the temperature than oxygen under corresponding pressure store
Low 5~30 DEG C.
The electric energy that the oxygen-enriched combusting power generator 5 exports includes that there are three purposes: driving the basic load hair in power grid 6
Electricity；It generates electricity when driving the peak of power consumption in power grid 6 namely peakload generates electricity；It powers to air separation unit 1.
The electricity-generating method of a kind of described joint oxygen-enriched combusting and the integrated power generation system of liquid oxygen energy storage, works as power load
When at a low ebb, the electric energy that oxygen-enriched combusting power generator 5 exports is mainly used to drive the basic load in power grid 6 to generate electricity and to sky
Separating device 1 is powered, the oxygen exported by air separation unit 1, and a part is for 5 combustion power generation of oxygen-enriched combusting power generator, another portion
Lease making oxygen liquefying plant 2 enters liquid oxygen storage tank 3 after liquefying and is stored；When power load is in peak, oxygen-enriched combusting power generation
The electric energy that device 5 exports is mainly used to drive basic load power generation and peakload in power grid 6 to generate electricity, and only a small amount of electric energy
It for air separation unit 1 or powers to air separation unit 1, the required oxygen that burns of oxygen-enriched combusting power generator 5 is main or complete at this time
Oxygen that is that portion is generated from consumption paddy electricity and being stored in liquid oxygen storage tank 3.
The invention has the following advantages:
A kind of integrated power generation system and method for combining oxygen-enriched combusting and liquid oxygen energy storage of the present invention, has as follows
Advantage: (1) liquid oxygen energy storage and oxygen-enriched combusting power generation are integrated into same system and process flow, it is empty that there is no conventional liquids
Required thermal energy is converted to the two times transfer process of electric energy when discharging in gas or liquid oxygen energy-storage system, to have higher storage
It can efficiency；(2) the cheap feature of electricity price, is converted into liquid oxygen storage when making full use of power load low ebb, in electricity consumption
When peak, then stored liquid oxygen is generated electricity by oxygen-enriched combusting and is converted into electric energy, so as to be obviously improved whole system
Economy.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention.
Wherein, 1 be air separation unit, 2 be oxygen liquefying plant, 3 be liquid oxygen storage tank, 4 be evaporator, 5 be oxygen-enriched combusting power generation
Device, 6 be power grid.
Specific embodiment
The invention will be described in further detail with reference to the accompanying drawing:
As shown in Figure 1, a kind of integrated power generation system for combining oxygen-enriched combusting and liquid oxygen energy storage of the present invention, space division
The entrance of device 1 is connected with air inlet duct, the oxygen outlet of air separation unit 1 respectively with oxygen liquefying plant 2 and oxygen-enriched combusting
The oxygen intake of power generator 5 is connected；The liquid oxygen outlet of oxygen liquefying plant 2 is connected with the liquid oxygen entrance of liquid oxygen storage tank 3；Liquid
The liquid oxygen outlet of oxygen storage tank 3 is connected with the oxygen intake of evaporator 4；Oxygen outlet and the oxygen-enriched combusting power generation of evaporator 4 fill
It sets 5 oxygen intake to be connected, the outlet connection power grid 6 and air separation unit 1 of oxygen-enriched combusting power generator 5.
Include that there are three purposes by the electric energy that oxygen-enriched combusting power generator 5 issues: driving the basic load hair in power grid 6
Electricity；Drive the peakload power generation in power grid 6；It powers to air separation unit 1.When power load is at a low ebb in entire network system
When, it is contemplated that paddy electricity electricity price is lower, is mainly used to drive in power grid 6 by the electric energy that oxygen-enriched combusting power generator 5 exports at this time
Basic load generates electricity and powers to air separation unit 1, and the oxygen exported by air separation unit 1, a part is for oxygen-enriched combusting power generator 5
Combustion power generation is used, and another part enters liquid oxygen storage tank 3 after the liquefaction of oxygen liquefying plant 2 and stored, the storage in liquid oxygen storage tank 3
Pressure is 1~5bar, and temperature is 5~30 DEG C lower than the saturation temperature of oxygen under corresponding pressure store；When power load is in peak
When, the electric energy that oxygen-enriched combusting power generator 5 exports is mainly used to drive basic load power generation and peakload hair in power grid 6
Electricity, and only a small amount of electric energy is powered for air separation unit 1 or not to air separation unit 1, the institute of the burning of oxygen-enriched combusting power generator 5 at this time
Oxygen that is that the oxygen needed is primarily or entirely generated from consumption paddy electricity and being stored in liquid oxygen storage tank 3.
Above-described specific embodiment has carried out further the purpose of the present invention, technical scheme and beneficial effects
It is described in detail, it should be understood that being not limited to this hair the foregoing is merely a specific embodiment of the invention
Bright, all within the spirits and principles of the present invention, any modification, equivalent substitution, improvement and etc. done should be included in the present invention
Protection scope within.
Claims (4)
1. a kind of integrated power generation system for combining oxygen-enriched combusting and liquid oxygen energy storage, it is characterised in that: including air separation unit (1),
Oxygen liquefying plant (2), liquid oxygen storage tank (3), evaporator (4), oxygen-enriched combusting power generator (5) and power grid (6)；
Oxygen of the oxygen outlet of the air separation unit (1) respectively with oxygen liquefying plant (2) and oxygen-enriched combusting power generator (5) enters
Mouth is connected；The liquid oxygen outlet of oxygen liquefying plant (2) is connected with the liquid oxygen entrance of liquid oxygen storage tank (3)；The liquid of liquid oxygen storage tank (3)
Oxygen outlet is connected with the oxygen intake of evaporator (4)；The oxygen outlet of evaporator (4) and oxygen-enriched combusting power generator (5)
Oxygen intake is connected, outlet connection power grid (6) of oxygen-enriched combusting power generator (5) and air separation unit (1).
2. a kind of integrated power generation system for combining oxygen-enriched combusting and liquid oxygen energy storage according to claim 1, feature exist
In: the pressure store in the liquid oxygen storage tank (3) is 1~5bar, and temperature is lower by 5 than the saturation temperature of oxygen under corresponding pressure store
~30 DEG C.
3. a kind of integrated power generation system for combining oxygen-enriched combusting and liquid oxygen energy storage according to claim 1, feature exist
In: the electric energy of oxygen-enriched combusting power generator (5) output includes that there are three purposes: driving the basic load hair in power grid (6)
Electricity；It generates electricity when driving the peak of power consumption in power grid (6) namely peakload generates electricity；It powers to air separation unit (1).
4. the electricity-generating method of a kind of joint oxygen-enriched combusting described in claim 1 and the integrated power generation system of liquid oxygen energy storage,
It is characterized in that, when power load is at a low ebb, the electric energy of oxygen-enriched combusting power generator (5) output is mainly used to drive power grid
(6) basic load in generates electricity and powers to air separation unit (1), and the oxygen exported by air separation unit (1), a part is for oxygen-enriched combustion
It burns power generator (5) combustion power generation to use, another part enters liquid oxygen storage tank (3) after oxygen liquefying plant (2) liquefy and stored；
When power load is in peak, the electric energy of oxygen-enriched combusting power generator (5) output is mainly used to drive the basis in power grid (6)
Load power generation and peakload power generation, and only a small amount of electric energy is powered for air separation unit (1) or not to air separation unit (1), this
When oxygen-enriched combusting power generator (5) burn needed for oxygen primarily or entirely from consumption paddy electricity generate and be stored in liquid oxygen storage
Oxygen in tank (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811399902.1A CN109412183A (en) | 2018-11-22 | 2018-11-22 | A kind of integrated power generation system and method for combining oxygen-enriched combusting and liquid oxygen energy storage |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811399902.1A CN109412183A (en) | 2018-11-22 | 2018-11-22 | A kind of integrated power generation system and method for combining oxygen-enriched combusting and liquid oxygen energy storage |
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| CN201811399902.1A Pending CN109412183A (en) | 2018-11-22 | 2018-11-22 | A kind of integrated power generation system and method for combining oxygen-enriched combusting and liquid oxygen energy storage |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110067611A (en) * | 2019-04-22 | 2019-07-30 | 东南大学 | A kind of calcium round-robin method trapping CO2The peak regulation system and working method of joint liquid oxygen energy storage |
| CN113178865A (en) * | 2021-04-23 | 2021-07-27 | 东北电力大学 | Carbon-oxygen circulation-based energy concentrator and optimal scheduling method thereof |
| CN114542225A (en) * | 2022-02-21 | 2022-05-27 | 上海发电设备成套设计研究院有限责任公司 | Device system and method for coupling liquid compressed air energy storage with air separation oxygen-enriched combustion |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110067611A (en) * | 2019-04-22 | 2019-07-30 | 东南大学 | A kind of calcium round-robin method trapping CO2The peak regulation system and working method of joint liquid oxygen energy storage |
| CN113178865A (en) * | 2021-04-23 | 2021-07-27 | 东北电力大学 | Carbon-oxygen circulation-based energy concentrator and optimal scheduling method thereof |
| CN113178865B (en) * | 2021-04-23 | 2022-05-24 | 东北电力大学 | Energy hub based on carbon-oxygen circulation and its optimal scheduling method |
| CN114542225A (en) * | 2022-02-21 | 2022-05-27 | 上海发电设备成套设计研究院有限责任公司 | Device system and method for coupling liquid compressed air energy storage with air separation oxygen-enriched combustion |
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