CN209180655U - A kind of small-sized LNG distributed energy resource system - Google Patents
A kind of small-sized LNG distributed energy resource system Download PDFInfo
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- CN209180655U CN209180655U CN201821861827.1U CN201821861827U CN209180655U CN 209180655 U CN209180655 U CN 209180655U CN 201821861827 U CN201821861827 U CN 201821861827U CN 209180655 U CN209180655 U CN 209180655U
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- 239000000446 fuel Substances 0.000 claims abstract description 65
- 238000003860 storage Methods 0.000 claims abstract description 25
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 14
- 238000011084 recovery Methods 0.000 claims abstract description 7
- 239000007789 gas Substances 0.000 claims description 66
- 238000002485 combustion reaction Methods 0.000 claims description 28
- 238000002309 gasification Methods 0.000 claims description 8
- 230000005611 electricity Effects 0.000 claims description 7
- 238000006243 chemical reaction Methods 0.000 claims description 6
- 239000002737 fuel gas Substances 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 6
- 239000007791 liquid phase Substances 0.000 claims description 5
- 238000003487 electrochemical reaction Methods 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 238000009413 insulation Methods 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 claims description 2
- 238000001816 cooling Methods 0.000 claims description 2
- 230000008676 import Effects 0.000 claims description 2
- 239000000463 material Substances 0.000 claims description 2
- 239000012071 phase Substances 0.000 claims description 2
- 239000000843 powder Substances 0.000 claims description 2
- 238000004321 preservation Methods 0.000 claims description 2
- 238000002955 isolation Methods 0.000 claims 1
- 239000003949 liquefied natural gas Substances 0.000 abstract description 53
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 abstract description 44
- 239000003345 natural gas Substances 0.000 abstract description 18
- 238000005516 engineering process Methods 0.000 abstract description 10
- 238000005520 cutting process Methods 0.000 abstract description 3
- 230000007613 environmental effect Effects 0.000 abstract description 3
- 239000003054 catalyst Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000032258 transport Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- -1 electric Chemical compound 0.000 description 2
- 238000005065 mining Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
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- 238000004146 energy storage Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
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- 239000003205 fragrance Substances 0.000 description 1
- 239000007792 gaseous phase Substances 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000009972 noncorrosive effect Effects 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
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- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000009967 tasteless effect Effects 0.000 description 1
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Abstract
The utility model discloses a kind of small-sized LNG distributed energy resource systems, including the present apparatus to be provided with LNG storage and fuel system, air supply system, fuel cell pile, heat recovery system.LNG Technology and the cross-cutting combination of fuel cell technology are solved the problems, such as the energy reserves of isolated island, natural gas, electric power, hot water, defeated supply problem outside steam, had a extensive future by the utility model.Compared with traditional distributed energy technology, the utility model miniaturization, equipment is simple, efficiency is high, clean and environmental protection, safe and reliable, peak load shifting and good in economic efficiency, and the utility model device can facilitate to migrate to other areas and continue to service when demand changes.
Description
Technical field
The utility model relates to distributed energy technical fields, use LNG as the energy, natural gas more particularly, to a kind of
Small distributed energy system of the fuel cell as core.
Background technique
Liquefied natural gas (Liquefied Natural Gas, abbreviation LNG), main component is methane, and being recognized is the earth
On most clean fossil energy.Colourless, tasteless, nontoxic and non-corrosive, volume is about the 1/ of same amount gaseous natural gas volume
625, the quality of liquefied natural gas is only 45% or so of androgynous ponding.
The main component of liquefied natural gas is methane, and the atmospheric boiling point of methane is -161 DEG C.Its manufacturing process is first by gas
The natural gas of field production is after purification (dehydration, de- hydrocarbon, de- sour gas), using throttling, expansion and additional cold source refrigeration
Technique makes methane become liquid, and external heating is needed to gasify again when in use.Liquefied natural gas is with free from foreign meter, composition is pure
Net advantage is a kind of ideal fuel-cell fuel source.
Fuel cell is mainly chemically reacted to generate electric power using natural gas, carbon monoxide, hydrogen etc. and oxygen, public
Think the forth generation chemical energy generation technology after thermal power generation, hydroelectric generation and nuclear energy power generation technology, application range covers
Distributed generation system, UPS, means of transport, robot, machine tool, portable electronic etc..But common pipe natural gas by
In causing natural gas fuel cell heap that cannot stablize work with complicated component or containing impurity such as sulphur, high-carbon component, odorants
Make, and the place for the natural gas that can thread a pipe generally has stable power grid available, but more distributed energy demands are
Emergency electricity consumption, outlying oil gas mining site, hidden military base in city, often pipe natural gas and power grid all can not
The place of arrival, therefore the distributed energy resource system for researching and developing the feulcell prototype based on LNG is that natural gas fuel cell is promoted to answer
Good path.
LNG Technology and the cross-cutting combination of fuel cell technology are solved the natural of isolated island by the utility model
Gas, electric power, hot water, steam supply problem, have a extensive future.Compared with traditional distributed energy technology, this is practical new
Type miniaturization, equipment is simple, efficiency is high, clean and environmental protection, safe and reliable, peak load shifting and good in economic efficiency, and demand changes
When the utility model device can facilitate to migrate to other areas and continue to service.
Summary of the invention
The shortcomings that in order to overcome the prior art, the utility model provide a kind of small-sized LNG distributed energy resource system.
The technical scheme adopted by the utility model is a kind of small-sized LNG distributed energy resource system, including LNG storage and
Fuel system, air supply system, fuel cell pile and heat recovery system, in which:
LNG storage and fuel system include LNG storage tank, LNG booster pump, LNG gasification device, BOG compressor and
Gas heater, the liquid-phase outlet of the LNG storage tank successively with LNG booster pump, LNG gasification device, gas heater, fuel
Battery stack is connected, and the gas phase of LNG storage tank imports fuel gas pipe after BOG compressor boost and before gas heater
Road；
The air supply system includes air compressor and air preheater, after raw air is compressed by air compressor
It is heated to be sent into fuel cell pile after set temperature and participate in react by air heater；
The fuel cell pile includes fuel cell pile and AC/DC converter, and fuel cell pile passes through fuel gas
Direct current is generated with the electrochemical reaction of air, and is externally sent out after being converted into exchange electricity consumption by AC/DC converter；
The heat recovery system includes tail-gas combustion stove, steam generator and hot water heat exchanger, and fuel cell pile generates
Fuel exhaust gas and air tail gas burn in tail-gas combustion stove, the combustion tail gas of generation passes through steam generator, air respectively
Preheater and hot water heat exchanger carry out thermal energy step by step and recycle.
Compared with prior art, the good effect of the utility model is:
LNG Technology and the cross-cutting combination of fuel cell technology are solved the energy storage of isolated island by the utility model
For defeated supply problem outside problem, natural gas, electric power, hot water, steam, have a extensive future.With traditional distributed energy technique skill
Art is compared, and the utility model miniaturization, equipment is simple, efficiency is high, clean and environmental protection, safe and reliable, peak load shifting and economic benefit
Good, the utility model device can facilitate to migrate to other areas and continue to service when demand changes.City emergency is used
The pipe natural gas such as electric, outlying oil gas mining site, hidden military base and power grid all can not be successfully the place of arrival, and this is practical
It is novel to propose a kind of preferable solution.
Detailed description of the invention
The utility model will illustrate by example and with reference to the appended drawing, in which:
Fig. 1 is the schematic diagram of this small-sized LNG distributed energy resource system.
Specific embodiment
A kind of small-sized LNG distributed energy resource system, as shown in Figure 1, comprising: LNG loads facility 1, LNG storage tank 2, LNG and increases
Press pump 3, LNG gasification device 4, BOG compressor 5, gas heater 6, fuel cell pile 7, AC/DC converter 8, exhaust combustion
Furnace 9, air compressor 10, air preheater 11, steam generator 12, hot water heat exchanger 13, control valve 14-21 (including FV valve
14,21TV valve 15,16,17,18,19,20), FV valve refers to that flow interlocked control valve, TV valve refer to temperature interlocked control valve.
Specifically,
1) facility 1, LNG storage tank 2, LNG booster pump 3, LNG gasification device 4, BOG compressor 5, heated by natural gas are loaded by LNG
Device 6 has collectively constituted LNG storage and fuel system.
Polarstream loads facility 1 by LNG and LNG is loaded into LNG storage tank 2 by pipeline, to store fuel.
By the entrance of pipeline connection booster pump 3, the outlet of booster pump 3 is entered by pipeline with LNG gasification device 4 liquid-phase outlet of LNG storage tank 2
Mouth is connected.The gaseous phase outlet of LNG storage tank 2 is connected to BOG compressor 5 by pipeline, the BOG being pressurized by BOG compressor 5
(Boil Off Gas flashed vapour, the static evaporation that LNG is generated in static storage) is exported by pipeline and LNG gasification device 4
Enter heater 6 after the mixing of natural gas connection, the outlet of gas heater 6 passes through the fuel of pipeline and fuel cell pile 7
Entrance is connected.
The outlet of a booster pump 3 point branch line connects back to 2 liquid phase liquid return hole of LNG storage tank by FV valve 14 and pipeline, main logical
It crosses reflux and adjusts solution reactive fuel flow regulation problem.
Wherein:
LNG, which loads facility 1, can be arm of unloading, special joint etc.；LNG storage tank 2 can be vacuum-powders insulation tank, Gao Zhen
Empty wound insulation bottle；LNG booster pump 3 can be immersed pump, centrifugal pump etc..
2) air supply system has been collectively constituted by air compressor 10, air preheater 11.
Air sucks air compressor 10, three strands of pressurized air point from atmosphere, and first strand of air passes through TV valve 17
It is sent by pipeline to air preheater 11 after adjusting flow, the heat that second strand of air is exported through TV valve 18 and air preheater 11 is empty
It is sent together by pipeline to the air intake of fuel cell pile 7 after gas mixing.Third stock air passes through the flow control of FV valve 21
It is sent by pipeline to one combust of tail gas of tail-gas combustion stove 9 and the generation of fuel cell pile 7 after system.
Wherein:
Air compressor 10 can be helical-lobe compressor, reciprocating compressor etc..
3) fuel cell pile has been collectively constituted by fuel cell, AC/DC converter 8 etc..
By gas heater 6 send to Lai high-temperature natural gas and the high temperature air sent of air preheater 11 in fuel electricity
Electrochemical reaction is generated in pond pile 7, direct current is produced by cable and accesses AC/DC converter 8, it is common by being converted into
Alternating current passes through defeated outside cable.
Wherein:
Fuel cell pile 7 can be molten carbonate fuel cell heap, solid-oxide fuel cell stack.
4) heat recovery system has been collectively constituted by tail-gas combustion stove 9, steam generator 12, hot water heat exchanger 13.
Fuel cell pile 7, which can generate high-temperature fuel tail gas a part and pass through TV valve 15 and be connected to natural gas with pipeline, to be added
Hot device 6 generates low temp fuel tail gas to heat fuel gas, and another part high-temperature fuel tail gas fires after passing through TV valve 16 with low temperature
Tail-gas combustion stove 9 is connected to by pipeline after material tail gas mixing.Fuel cell pile 7 can generate high temperature air tail gas and fresh sky
Tail-gas combustion stove 9 is connected to by pipeline after gas mixing.High-temp combustion tail gas is generated after tail-gas combustion stove burning, is connected by pipeline
It is connected to steam generator 12 and hot water generates steam, the medium temperature combustion tail gas after cooling connects fuel cell pile 7 by pipeline
It carries out concurrent heating heat preservation heel row and removes medium temperature combustion tail gas, fuel cell pile 7 excludes medium temperature combustion tail gas and is connected to by pipeline
Air preheater 11 generates low-temperature burning tail gas after further exchanging heat, generate low-temperature burning tail gas after the heat exchange of air preheater 11
Accessing hot water heat exchanger 13 by pipeline, further production Recovery of the hot water heat, the combustion tail gas for having recycled heat are emitted into greatly again
Gas.
The working principle of the utility model is:
LNG transport tank car transports the LNG come and is unloaded in storage tank first (0.1MPa or so storage), the LNG in storage tank
It is pressurized to middle pressure (0.3MPa or so) by LNG booster pump, middle pressure LNG is converted into gaseous natural gas by gasifier, then through day
Normal-temperature natural-gas is heated to reaction temperature (600-1000 DEG C) and is sent again to fuel cell pile participation reaction by right hot-air heater；This
The air compressor of system will be compressed to after the air filtration in atmosphere it is middle pressure (0.3MPa or so, but need than fuel gas end omit
Height, to guarantee the movement of oxonium ion) and steam humidification is injected, humid air is then heated to reaction temperature through air preheater
(600-1000 DEG C) send again to fuel cell pile and participates in reaction, and the performance of fuel cell pile battery is with operating temperature and pressure
It increases and is promoted, the reason is that the catalytic activity of catalyst can be enhanced by improving battery temperature, strengthen reactant in the biography of inside battery
It passs, improves the conductivity of proton, but after arrival certain value, catalyst is substantially saturated, the mass transfer polarization of anode limits at this time
The raising of battery performance, while the carbon distribution under high temperature may poison catalyst, the activity for reducing catalyst generates adverse effect.It generates
Electric current is outer defeated after the conversion of AC/DC converter.Reacting the fuel exhaust gas generated and air tail gas will mix in tail-gas combustion stove
Fresh air further burns, and the combustion tail gas after burning passes through steam generator, air preheater and hot water heat exchanger respectively
Thermal energy step by step is carried out to recycle.This system can external BrLi chiller realization cold, heat and electricity triple supply when running.
Claims (8)
1. a kind of small-sized LNG distributed energy resource system, it is characterised in that: including LNG storage and fuel system, air supply
System, fuel cell pile and heat recovery system, in which:
LNG storage and fuel system include LNG storage tank, LNG booster pump, LNG gasification device, BOG compressor and natural
Hot-air heater, the liquid-phase outlet of the LNG storage tank successively with LNG booster pump, LNG gasification device, gas heater, fuel cell
Pile is connected, and the gas phase of LNG storage tank imports fuel gas pipeline after BOG compressor boost and before gas heater；
The air supply system includes air compressor and air preheater, and raw air passes through after being compressed by air compressor
Air heater is sent into fuel cell pile participation reaction after being heated to set temperature；
The fuel cell pile includes fuel cell and AC/DC converter, and fuel cell pile passes through fuel gas and air
Electrochemical reaction generates direct current, and externally sends out after being converted into exchange electricity consumption by AC/DC converter；
The heat recovery system includes tail-gas combustion stove, steam generator and hot water heat exchanger, the combustion that fuel cell pile generates
Material tail gas and air tail gas burn in tail-gas combustion stove, and the combustion tail gas of generation passes through steam generator, air preheat respectively
Device and hot water heat exchanger carry out thermal energy step by step and recycle.
2. a kind of small-sized LNG distributed energy resource system according to claim 1, it is characterised in that: pass through air compressor
Air afterwards is divided into three strands: first strand air and is sent by pipeline to air preheater after the first TV valve (17) adjusts flow,
Second strand of air passes through after the mixing of the hot-air of air preheater outlet through the 2nd TV valve (18) to be sent together with pipeline to fuel electricity
The air intake of pond pile 7；Third stock air sent by pipeline to tail-gas combustion stove after the flow control of FV valve (21) and
One combust of tail gas that fuel cell pile generates.
3. a kind of small-sized LNG distributed energy resource system according to claim 2, it is characterised in that: fuel cell pile produces
Raw high-temperature fuel tail gas a part is connected to gas heater, another part high temperature by the 3rd TV valve (15) and with pipeline
Pass through pipeline connection after the low temp fuel tail gas mixing that fuel exhaust gas is generated with gas heater afterwards by the 4th TV valve (16)
To tail-gas combustion stove；The high temperature air tail gas and mixed from air by the fresh air of FV valve (21) that fuel cell pile generates
Tail-gas combustion stove is connected to by pipeline after conjunction.
4. a kind of small-sized LNG distributed energy resource system according to claim 3, it is characterised in that: tail-gas combustion stove generates
High-temp combustion tail gas steam generator is connected to by pipeline, become medium temperature combustion tail gas after heat exchange cooling and pass through pipeline connection
Discharge becomes medium temperature combustion tail gas after carrying out concurrent heating heat preservation to fuel cell pile, is then connected to air preheater by pipeline
Further become low-temperature burning tail gas after heat exchange, then hot water heat exchanger is accessed by pipeline, the combustion tail gas after having recycled heat
It is emitted into atmosphere.
5. a kind of small-sized LNG distributed energy resource system according to claim 1, it is characterised in that: the booster pump goes out
A mouth point branch line connects back to the liquid phase liquid return hole of LNG storage tank by FV valve and pipeline.
6. a kind of small-sized LNG distributed energy resource system according to claim 1, it is characterised in that: the LNG storage tank is true
Empty powder isolation tank or high vacuum wound insulation bottle；The LNG booster pump is immersed pump or centrifugal pump.
7. a kind of small-sized LNG distributed energy resource system according to claim 1, it is characterised in that: the air compressor
For helical-lobe compressor or reciprocating compressor.
8. a kind of small-sized LNG distributed energy resource system according to claim 1, it is characterised in that: the fuel cell electricity
Heap is molten carbonate fuel cell heap or solid-oxide fuel cell stack.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821861827.1U CN209180655U (en) | 2018-11-13 | 2018-11-13 | A kind of small-sized LNG distributed energy resource system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821861827.1U CN209180655U (en) | 2018-11-13 | 2018-11-13 | A kind of small-sized LNG distributed energy resource system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109140227A (en) * | 2018-11-13 | 2019-01-04 | 中国石油工程建设有限公司 | A kind of small-sized LNG distributed energy resource system and process |
| CN112009697A (en) * | 2020-09-02 | 2020-12-01 | 成都精智艺科技有限责任公司 | Efficient LNG ship power supply system and method |
| CN114142061A (en) * | 2021-12-01 | 2022-03-04 | 上海船舶研究设计院（中国船舶工业集团公司第六0四研究院） | Shipboard hydrogen fuel preparation system and hydrogen production method thereof |
-
2018
- 2018-11-13 CN CN201821861827.1U patent/CN209180655U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109140227A (en) * | 2018-11-13 | 2019-01-04 | 中国石油工程建设有限公司 | A kind of small-sized LNG distributed energy resource system and process |
| CN109140227B (en) * | 2018-11-13 | 2024-03-08 | 中国石油集团工程股份有限公司 | Small LNG distributed energy system and process method |
| CN112009697A (en) * | 2020-09-02 | 2020-12-01 | 成都精智艺科技有限责任公司 | Efficient LNG ship power supply system and method |
| CN114142061A (en) * | 2021-12-01 | 2022-03-04 | 上海船舶研究设计院（中国船舶工业集团公司第六0四研究院） | Shipboard hydrogen fuel preparation system and hydrogen production method thereof |
| CN114142061B (en) * | 2021-12-01 | 2024-03-08 | 上海船舶研究设计院（中国船舶工业集团公司第六0四研究院） | Shipboard hydrogen fuel preparation system and hydrogen production method thereof |
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Effective date of registration: 20210224 Address after: No.2 Daqing East Road, Dushanzi District, Karamay City, Xinjiang Uygur Autonomous Region 834000 Patentee after: CNPC Engineering Co.,Ltd. Patentee after: CHINA PETROLEUM ENGINEERING & CONSTRUCTION Corp. Patentee after: CHINA NATIONAL PETROLEUM Corp. Address before: No. 6, Sichuan hi tech Zone, sublime Road, Chengdu, Sichuan Patentee before: CHINA PETROLEUM ENGINEERING & CONSTRUCTION Corp. |