CN108301923A - A kind of oxygen-enriched combusting and molten carbonate fuel cell hybrid power system - Google Patents
A kind of oxygen-enriched combusting and molten carbonate fuel cell hybrid power system Download PDFInfo
- Publication number
- CN108301923A CN108301923A CN201710020720.8A CN201710020720A CN108301923A CN 108301923 A CN108301923 A CN 108301923A CN 201710020720 A CN201710020720 A CN 201710020720A CN 108301923 A CN108301923 A CN 108301923A
- Authority
- CN
- China
- Prior art keywords
- fuel cell
- carbonate fuel
- oxygen
- molten carbonate
- enriched combusting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000000446 fuel Substances 0.000 title claims abstract description 64
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 title claims abstract description 47
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title claims abstract description 26
- 229910052760 oxygen Inorganic materials 0.000 title claims abstract description 26
- 239000001301 oxygen Substances 0.000 title claims abstract description 26
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000003546 flue gas Substances 0.000 claims abstract description 6
- 238000002844 melting Methods 0.000 claims abstract description 5
- 230000008018 melting Effects 0.000 claims abstract description 5
- 239000010763 heavy fuel oil Substances 0.000 claims abstract description 4
- 238000002485 combustion reaction Methods 0.000 claims description 15
- 239000007789 gas Substances 0.000 claims description 9
- 238000006243 chemical reaction Methods 0.000 claims description 8
- 238000010248 power generation Methods 0.000 claims description 3
- 238000000926 separation method Methods 0.000 claims description 2
- 230000005611 electricity Effects 0.000 abstract description 8
- 238000004134 energy conservation Methods 0.000 abstract description 2
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 230000003197 catalytic effect Effects 0.000 abstract 1
- 239000000047 product Substances 0.000 description 8
- 230000008901 benefit Effects 0.000 description 5
- 239000000376 reactant Substances 0.000 description 4
- 238000007254 oxidation reaction Methods 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000003792 electrolyte Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 239000006227 byproduct Substances 0.000 description 1
- 150000004649 carbonic acid derivatives Chemical class 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003487 electrochemical reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 239000010416 ion conductor Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 239000010970 precious metal Substances 0.000 description 1
- 230000036632 reaction speed Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000006722 reduction reaction Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C6/00—Plural gas-turbine plants; Combinations of gas-turbine plants with other apparatus; Adaptations of gas- turbine plants for special use
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C6/00—Plural gas-turbine plants; Combinations of gas-turbine plants with other apparatus; Adaptations of gas- turbine plants for special use
- F02C6/18—Plural gas-turbine plants; Combinations of gas-turbine plants with other apparatus; Adaptations of gas- turbine plants for special use using the waste heat of gas-turbine plants outside the plants themselves, e.g. gas-turbine power heat plants
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/86—Inert electrodes with catalytic activity, e.g. for fuel cells
- H01M4/90—Selection of catalytic material
- H01M4/9041—Metals or alloys
- H01M4/905—Metals or alloys specially used in fuel cell operating at high temperature, e.g. SOFC
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/06—Combination of fuel cells with means for production of reactants or for treatment of residues
- H01M8/0606—Combination of fuel cells with means for production of reactants or for treatment of residues with means for production of gaseous reactants
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/06—Combination of fuel cells with means for production of reactants or for treatment of residues
- H01M8/0662—Treatment of gaseous reactants or gaseous residues, e.g. cleaning
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/14—Fuel cells with fused electrolytes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/14—Fuel cells with fused electrolytes
- H01M2008/147—Fuel cells with molten carbonates
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
Abstract
The present invention relates to a kind of oxygen-enriched combustings and molten carbonate fuel cell hybrid power system, belong to electricity generation system field.The system includes the components such as air separator, molten carbonate fuel cell, turbine.The isolated O of air2The H converted with fuel2, react respectively in the cathode of molten carbonate fuel cell, anode, form melting carbonate fuel cell generation system；Meanwhile fuel, CO, O2, the residual fuel in flue gas and anode exhaust oxygen-enriched combusting occurs in catalytic combustor, the high-temperature flue gas of generation enters turbine expansion acting, forms oxygen-enriched combusting electricity generation system.This hybrid power system has the characteristics that high generating efficiency, fuel selection diversity, energy conservation and environmental protection.
Description
Technical field
The invention belongs to electricity generation system fields more particularly to a kind of oxygen-enriched combusting, and hair is mixed with molten carbonate fuel cell
Electric system.
Background technology
Molten carbonate fuel cell is a kind of using fused carbonate as the high-temperature fuel cell of oxygen ion conductor, in battery
Many processes such as heat transfer, mass transfer, oxidation, ionization, migration, conversion occur simultaneously for portion, it is the chemical energy turn directly by fuel
It is changed to electric energy, it is intermediate without combustion process, because without being limited by Carnot cycle, energy conversion efficiency is high, total profit of fuel
With efficiency up to 60%-80%；In addition, molten carbonate fuel cell also has energy conservation and environmental protection, fuel diversity, running noises
Low advantage.
From the point of view of routine, the power generation process of molten carbonate fuel cell is all that air is passed directly into battery to participate in electrification
Reaction is learned, but content is up to 79% N in air2And it is not involved in reaction, this results in a large amount of wastes of air.Therefore, having must
Consider first to detach air, can both obtain the high O of purity in this way2Promote molten carbonate fuel cell reaction speed
Rate, and byproduct N can be obtained2。
Current power generator is usually by with CH4Based on gaseous fuel burn, pass through the high-temperature gas of generation
Turbine generation is driven, still, turbine is influenced by Carnot cycle limitation and combustible loss, and system generating efficiency is still to be improved.
At the same time, the anode resultant product of molten carbonate fuel cell usually has higher-energy, after oxygen-enriched combusting
Turbine exhaust gas temperature also be up to 600 DEG C or so, great energy waste can be caused by directly draining, it may be considered that this two parts heat
The recycling of amount.
Invention content
In view of the above problems and phenomenon, a kind of oxygen-enriched combusting of present invention offer and molten carbonate fuel cell are mixed
Close electricity generation system, it is intended to system generating efficiency be improved by hybrid mode, and be recycled to after-heat, realized more
Good cascaded utilization of energy pattern.
To achieve the goals above, the technical solution that the present invention takes is：
A kind of oxygen-enriched combusting and molten carbonate fuel cell hybrid power system, including：
Compressor：It is configured to compress air；
Air separator：It is configured to detach air；
Converter：It is configured to convert fuel, generates the anode reactant of molten carbonate fuel cell；
Fused carbonate fuel battery anode：It is configured to that reduction reaction occurs；
Fused carbonate fuel battery cathode：It is configured to mode oxidation reaction；
Combustion chamber：It is configured to accelerate oxygen-enriched combusting rate, generates high-temperature gas；
Turbine：It is configured to the thermal energy of high-temperature gas being converted to mechanical energy；
Generator：It is configured to mechanical energy being changed into electric energy.
A kind of above-mentioned oxygen-enriched combusting and molten carbonate fuel cell hybrid power system, wherein the air point
Product from device is O2And N2Product.
A kind of above-mentioned oxygen-enriched combusting and molten carbonate fuel cell hybrid power system, wherein the converter
Product be CO and H2。
A kind of above-mentioned oxygen-enriched combusting and molten carbonate fuel cell hybrid power system, wherein the melting carbon
Reactant in hydrochlorate anode of fuel cell is H2And CO3 2-, product is H2O and CO2。
A kind of above-mentioned oxygen-enriched combusting and molten carbonate fuel cell hybrid power system, wherein the melting carbon
Reactant in hydrochlorate fuel battery negative pole is O2And CO2, product is CO3 2-。
A kind of above-mentioned oxygen-enriched combusting and molten carbonate fuel cell hybrid power system, wherein the turbine production
A raw high-temperature flue gas part enters combustion chamber, and another part enters converter.
Above-mentioned technical proposal has the following advantages that or advantageous effect：
1, nickel can be used as elctro-catalyst, without using precious metal, and in part in molten carbonate fuel cell
High efficiency (60% or so) can be kept to run under load, full load and overload conditions, take full advantage of fused carbonate combustion
The unique advantage that material battery has in power field.
2, the residual fuel in anode exhaust both improves turbine inlet gas temperature in firing again for combustion chamber, improves power generation
Efficiency, and fuel is enable fully to burn, it is energy saving.
3, the CO that combustion chamber oxygen-enriched combusting obtains2Product is passed directly into fused carbonate fuel battery cathode as reactant
Reaction is participated in, had not only reduced oxycarbide discharge, but also ensure molten carbonate fuel cell continuous work.
Description of the drawings
By reading with reference to attached drawing below to being described in detail made by non-limiting embodiment, of the invention and its feature,
Shape and advantage will become more apparent.Identical label indicates identical part in whole attached drawings.Not deliberately according to
Ratio draws attached drawing, it is preferred that emphasis is shows the purport of the present invention.
A kind of oxygen-enriched combustings of Fig. 1 and molten carbonate fuel cell hybrid power system structural schematic diagram
Fig. 2 molten carbonate fuel cell fundamental diagrams
Each label meaning is as follows in figure：1- compressors；2- air separators；3- converters；4- fused carbonates fuel electricity
Pond anode；5- fused carbonate fuel battery cathodes；The combustion chambers 6-；7- turbines；8- generators
Specific implementation mode
The present invention is further illustrated in the following with reference to the drawings and specific embodiments, but not as the limit of the present invention
It is fixed.
As shown in Figure 1, this system includes：Compressor 1, air separator 2, converter 3, molten carbonate fuel cell sun
Pole 4, fused carbonate fuel battery cathode 5, combustion chamber 6, turbine 7, generator 8.Enter by 1 compressed air of compressor
Air separator 2 carries out gas separation, obtains O2And N2Product, a part of O2Into fused carbonate fuel battery cathode 5, separately
A part of O2Into combustion chamber 6；The H that fuel obtains after the conversion of converter 32Into fused carbonate fuel battery anode 4,
With O2Electrochemical reaction occurs and forms melting carbonate fuel cell generation system；Meanwhile fuel, CO, O2, flue gas and anode
Residual fuel in exhaust is mixed in combustion chamber 6, and the high-temperature flue gas that oxygen-enriched combusting generates is sent into 7 expansion work of turbine, and makes hair
Motor 8 generates electricity, and forms oxygen-enriched combusting electricity generation system；Flue gas after the acting of turbine 7, a part are back to combustion chamber 6 and adjust richness
The O of oxygen burning2Content is in the range of 27-39%, another part thermal conversion device 3, stablizes molten carbonate fuel cell institute
The H needed2Yield.
Molten carbonate fuel cell operation principle is introduced with reference to Fig. 2.
In Fig. 2, the structure of molten carbonate fuel cell includes mainly upper spacer, lower clapboard, fused carbonate fuel electricity
Pond anode 4, fused carbonate fuel battery cathode 5 and electrolyte panel.O2And CO2Oxidation reaction generation is carried out in cathode and electronics
CO3 2-, the CO in electrolyte panel3 2-Directly from movable cathode to anode；H in fuel2With CO3 2-It reacts generation in anode
CO2、H2O and electronics, electronics reach partition board after being collected by collector plate；Finally, it is connected with load equipment composition by upper and lower partition board
Complete circuit including electron-transport and ion movement.
It should be appreciated by those skilled in the art that those skilled in the art combine the prior art and above-described embodiment can be real
The existing change case, it will not be described here.Such change case does not affect the essence of the present invention, and it will not be described here.
Presently preferred embodiments of the present invention is described above.It is to be appreciated that the invention is not limited in above-mentioned
Particular implementation, wherein the equipment and structure be not described in detail to the greatest extent are construed as giving reality with the common mode in this field
It applies；Any technical person familiar with the field makes many possible changes and modifications not departing from technical solution of the present invention, or
It is revised as the equivalent embodiment of equivalent variations, this is not affected the essence of the present invention.Therefore, every without departing from skill of the present invention
The content of art scheme, according to the technical essence of the invention any simple modification made to the above embodiment, equivalent variations and repair
Decorations, still fall within technical solution of the present invention protection in the range of.
Claims (3)
1. a kind of oxygen-enriched combusting and molten carbonate fuel cell hybrid power system, it is characterised in that：It includes compressor, sky
Gas separating device, converter, fused carbonate fuel battery anode, fused carbonate fuel battery cathode, combustion chamber, turbine, hair
Motor；
Enter air separator by the compressed air of compressor and carry out gas separation, obtains O2And N2Product, a part of O2Into
Enter cathode, another part O2Into combustion chamber；The H that fuel obtains after converter converts2Into anode, with O2Electrification occurs
It learns reaction and forms melting carbonate fuel cell generation system；Meanwhile fuel, fuel converted product CO, O2, flue gas and anode
Residual fuel in exhaust is mixed in combustion chamber, and the high-temperature gas of generation enters turbine expansion acting, forms oxygen-enriched combusting power generation
System.
2. a kind of oxygen-enriched combusting as described in claim 1 and molten carbonate fuel cell hybrid power system, feature exist
In the O of oxygen-enriched combusting in the combustion chamber2Concentration controls between 27-39%.
3. a kind of oxygen-enriched combusting as described in claim 1 and molten carbonate fuel cell hybrid power system, feature exist
In the operating temperature of the molten carbonate fuel cell is in the range of 600-700 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710020720.8A CN108301923A (en) | 2017-01-13 | 2017-01-13 | A kind of oxygen-enriched combusting and molten carbonate fuel cell hybrid power system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710020720.8A CN108301923A (en) | 2017-01-13 | 2017-01-13 | A kind of oxygen-enriched combusting and molten carbonate fuel cell hybrid power system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108301923A true CN108301923A (en) | 2018-07-20 |
Family
ID=62872010
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710020720.8A Pending CN108301923A (en) | 2017-01-13 | 2017-01-13 | A kind of oxygen-enriched combusting and molten carbonate fuel cell hybrid power system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108301923A (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08185880A (en) * | 1994-12-28 | 1996-07-16 | Kobe Steel Ltd | Fuel cell power generation system |
| US20020174659A1 (en) * | 2001-05-24 | 2002-11-28 | Fermin Viteri | Combined fuel cell and fuel combustion power generation systems |
| US20070287046A1 (en) * | 2004-10-19 | 2007-12-13 | Central Research Institute Of Electric Power Industry | Combined Power Generation Equipment |
| US20110223500A1 (en) * | 2008-11-18 | 2011-09-15 | Tokyo Gas Co., Ltd. | Mcfc power generation system and method for operating same |
| US20120117979A1 (en) * | 2009-07-03 | 2012-05-17 | Emanuele Facchinetti | Hybrid cycle sofc - inverted gas turbine with co2 separation |
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-
2017
- 2017-01-13 CN CN201710020720.8A patent/CN108301923A/en active Pending
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