CN109599583B - Electric co-production solid oxide fuel cell stack - Google Patents

Electric co-production solid oxide fuel cell stack Download PDF

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Publication number
CN109599583B
CN109599583B CN201811478390.8A CN201811478390A CN109599583B CN 109599583 B CN109599583 B CN 109599583B CN 201811478390 A CN201811478390 A CN 201811478390A CN 109599583 B CN109599583 B CN 109599583B
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waste gas
gas reaction
reaction chamber
cavity
sofc
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CN109599583A (en
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孔为
韩振
黄红艳
周世玉
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Jiangsu University of Science and Technology
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Jiangsu University of Science and Technology
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    • 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
    • H01M8/24—Grouping of fuel cells, e.g. stacking of fuel cells
    • H01M8/241—Grouping of fuel cells, e.g. stacking of fuel cells with solid or matrix-supported electrolytes
    • H01M8/2425—High-temperature cells with solid electrolytes
    • H01M8/243—Grouping of unit cells of tubular or cylindrical configuration
    • 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
    • H01M8/0612—Combination of fuel cells with means for production of reactants or for treatment of residues with means for production of gaseous reactants from carbon-containing material
    • 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
    • H01M8/0612—Combination of fuel cells with means for production of reactants or for treatment of residues with means for production of gaseous reactants from carbon-containing material
    • H01M8/0618—Reforming processes, e.g. autothermal, partial oxidation or steam reforming
    • 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
    • H01M8/06—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
    • H01M8/0687—Reactant purification by the use of membranes or filters
    • 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
    • H01M8/24—Grouping of fuel cells, e.g. stacking of fuel cells
    • H01M8/2457—Grouping of fuel cells, e.g. stacking of fuel cells with both reactants being gaseous or vaporised
    • 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
    • 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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product

Abstract

The invention discloses an electrical CO-production solid oxide fuel cell stack, wherein fuel is introduced from a fuel inlet pipe, and is discharged from a tail gas outlet pipe after sequentially passing through a plurality of waste gas reaction chambers filled with carbon powder. Still set up the second carbon storehouse between tail gas outlet pipe, pass through the reaction with remaining water in the tail gas and CO2 and convert CO and H2, both can supply the heap to recycle, also can supply other equipment to make fuel usefulness, realize the electrical coproduction and improve device efficiency. The invention can solve the problem of poor cell performance caused by dilution of fuel by product water and CO2 in the SOFC electric stack based on the design.

Description

Electric co-production solid oxide fuel cell stack
Technical Field
The invention belongs to the fuel cell technology, and particularly relates to an electric co-production solid oxide fuel cell stack.
Background
A Solid Oxide Fuel Cell (SOFC) is an all-solid-state chemical power generation device that can directly and cleanly convert chemical energy stored in fuel and oxidant into electrical energy at high temperature, and has the advantages of wide fuel adaptability, high energy conversion efficiency, all-solid-state, modular assembly, zero pollution and the like, thus becoming a research hotspot of new energy at present.
The SOFC generally uses hydrocarbon gas as fuel, air as oxidant, oxygen in the air is reduced into oxygen ions at the cathode, the oxygen ions reach the anode through electrolyte, combine with the fuel to release electrons and generate water, the electrons flow through an external circuit to the cathode after outputting electric energy through a load, and the cycle can generate electricity continuously.
In practical SOFCs, fuel is continuously supplied and there is a concentration difference from the fuel inlet to the reaction site, resulting in concentration polarization. This results in a higher fuel concentration on the inlet side of the cell, a lower fuel concentration on the outlet side, and product water and CO on the flow path2The concentration is increased, and the product can dilute the fuel to a certain extent, so that the reaction at each position of the cell is uneven, and the cell performance is reduced.
Disclosure of Invention
The purpose of the invention is as follows: the invention aims to solve the defects in the prior art and provides an electrical CO-production solid oxide fuel cell stack2CO is also fuel of SOFC and finally generates CO through reaction2，CO2And then Boudouard reaction (C + CO) with carbon at high temperature22CO), fuel is replenished in the cell stack to a great extent, so that the fuel concentration difference between the front and the rear of the fuel flow path is reduced, and the reaction rates of each position of the cell tend to be consistent, thereby improving the cell performance and prolonging the cell life.
The technical scheme is as follows: the invention relates to an electrical co-production solid oxide fuel cell stack, which comprises a sealing cover, a tubular SOFC battery pack and a plurality of waste gas reaction cavities; the sealing covers are coated on the periphery of the tubular SOFC battery pack, and two ends of each SOFC single cell in the tubular SOFC battery pack extend out of the sealing covers (so that air can be introduced from one end and exhausted from the other end after reaction); each waste gas reaction cavity is vertically arranged in the tubular SOFC battery pack at intervals, and each waste gas reaction cavity comprises two filter screens, a vent pipe and a multi-stage filter sheet; the two filter screens are vertically arranged and are separated by corresponding intervals, a plurality of first holes are formed in the filter screens for all SOFC monocells to insert and penetrate through, a plurality of second holes are formed in the filter screens for ventilating pipes to insert and penetrate through, and a multi-stage filter is arranged between every two adjacent ventilating pipes; wherein, both sides are equipped with a plurality of fuel inlet pipes and a plurality of tail gas outlet pipe respectively on the sealed lid at tubular SOFC group battery top, and each waste gas reaction chamber top is through mending carbon chamber and communicate in the carbon storehouse, and each waste gas reaction chamber can be fully communicate in the use of breather pipe.
The whole L type that is of tail gas outlet pipe, among the practical process, tail gas passes through the last vertically outlet pipe of tail gas outlet pipe earlier, gets into the carbon storehouse, and the tail gas after getting into the carbon storehouse is through the last horizontally outlet pipe of carbon storehouse circulation entering tail gas outlet pipe again, does not communicate between the last perpendicular and horizontal outlet pipe of tail gas outlet pipe promptly.
Furthermore, the tubular SOFC battery pack comprises a plurality of SOFC single cell layers, each SOFC single cell layer comprises a plurality of SOFC single cells which are arranged side by side, two ends of each SOFC single cell sequentially comprise a cathode, an electrolyte and an anode from inside to outside, the cathode part is the longest, and the anode part is the shortest; cathodes at two ends of each SOFC single cell extend out of the sealing covers.
Further, the number of the waste gas reaction chambers is four (or more than four), and the four waste gas reaction chambers are respectively a first waste gas reaction chamber, a second waste gas reaction chamber, a third waste gas reaction chamber and a fourth waste gas reaction chamber; a first waste gas reaction cavity, a second waste gas reaction cavity, a third waste gas reaction cavity and a fourth waste gas reaction cavity are sequentially erected in the tubular SOFC battery pack side by side, the top ends of the four waste gas reaction cavities are sequentially connected with corresponding carbon supplementing cavities, the carbon supplementing cavities are connected with a first carbon bin, and each carbon supplementing cavity is provided with a corresponding control valve (the opening of each control valve is controlled according to the consumption condition of carbon powder in each waste gas reaction cavity so as to meet the operation requirement of a galvanic pile); a second carbon bin (for absorbing water and CO in the tail gas through over reaction) is also arranged in the middle of the tail gas outlet pipe2) (ii) a And the carbon supplementing cavity, the first carbon bin and the second carbon bin are all arranged on a sealing cover at the top of the tubular SOFC battery pack.
Furthermore, the peripheral wall surfaces of the waste gas reaction cavity are in close contact with the sealing cover.
Further, the distance between two filter screens in the same waste gas reaction chamber (this distance is 1-3cm, can enough make gaseous abundant reaction, is unlikely to the too big influence volume in space again) increases along with first waste gas reaction chamber to last waste gas reaction chamber gradually: the filter screen interval is from first waste gas reaction chamber to fourth waste gas reaction chamber crescent, carries the carbon volume promptly and increases from first waste gas reaction chamber to fourth waste gas reaction chamber in proper order.
Furthermore, each multi-stage filter piece in the same waste gas reaction cavity adopts filter pieces with different meshes, the meshes are sequentially increased from top to bottom, namely, the gaps of the filter screen are sequentially reduced from top to bottom, so that the carbon powder is ensured to uniformly fall on each layer of the filter screen and not completely fall on the bottom of the battery pack.
Furthermore, the number of the waste gas reaction chambers is four, and the four waste gas reaction chambers are respectively a first waste gas reaction chamber, a second waste gas reaction chamber, a third waste gas reaction chamber and a fourth waste gas reaction chamber; first waste gas reaction chamber, second waste gas reaction chamber, third waste gas reaction chamber and fourth waste gas reaction chamber are staggered in proper order and are erected in tubular SOFC group battery, wherein, first waste gas reaction chamber and third waste gas reaction chamber arrange in tubular SOFC group battery intermediate position department, and its both sides equipartition has put the baffle, and second waste gas reaction chamber and third waste gas reaction chamber arrange in tubular SOFC group battery both ends position department, and a plurality of multistage filter discs have been put to the equipartition among these four waste gas reaction chambers. In this staggered arrangement structure that sets up waste gas reaction chamber, the structure that each mended carbon chamber, first carbon storehouse, second carbon storehouse and control flap sets up the structure in setting up the structure the same side by side. The multistage filter piece is sequentially arranged between the two baffles and the two filter screens from top to bottom, and the baffles can prevent carbon in the waste gas reaction cavity from leaking into the battery cavity.
Has the advantages that: compared with the prior art, the invention has the following advantages:
(1) according to the invention, the SOFC reaction product water and CO2 are increased along the flow path, a plurality of waste gas reaction cavities are designed along the fuel flow direction, and the distances among filter screens are sequentially increased, namely the carbon capacity is sequentially increased, so that the reaction of carbon and water vapor and the Boudouard reaction can be effectively utilized to absorb and convert the product to generate CO and H2 for the SOFC reaction, the fuel concentration difference before and after the fuel flow path is reduced, and the reaction rates of all positions of the cell tend to be consistent.
(2) Each layer of filter screen of the waste gas reaction cavity is provided with a carbon supplementing cavity and a corresponding control valve, so that carbon can be supplemented when the carbon in the filter screen is insufficient, and the operation requirement of a galvanic pile is met. And each waste gas reaction cavity is provided with a multi-stage filter sheet, the mesh number is sequentially increased (the gap is sequentially reduced) from top to bottom, and the carbon powder is ensured to uniformly fall on each layer of the filter screen under the action of gravity and not completely fall on the bottom of the battery pack to cause overstock.
(3) The second carbon bin is arranged between the tail gas outlet pipes, so that residual water and CO2 in the tail gas can be further converted through reaction to obtain CO and H2, the power supply pile can be used for running and recycling, other equipment can also be used as fuel, the electric CO-production is effectively realized, and the efficiency of the device is improved.
Drawings
FIG. 1 is a schematic view of the overall structure of embodiment 1 of the present invention;
FIG. 2 is a schematic view of a battery pack and an exhaust reaction chamber according to example 1 of the present invention;
FIG. 3 is a schematic structural view of an exhaust reaction chamber according to embodiment 1 of the present invention;
FIG. 4 is an exploded view of the vent tube and the multi-stage filter according to embodiment 1 of the present invention;
FIG. 5 is a schematic view of the overall structure of embodiment 2 of the present invention;
fig. 6 is a schematic diagram of a battery pack and a filter screen according to embodiment 2 of the present invention;
fig. 7 is a schematic view of an internal structure of a filter screen according to embodiment 2 of the present invention.
Detailed Description
The technical solution of the present invention is described in detail below, but the scope of the present invention is not limited to the embodiments.
The invention relates to an electrical co-production solid oxide fuel cell stack, which comprises a sealing cover, a tubular SOFC battery pack and a plurality of waste gas reaction cavities; the sealing covers are coated on the periphery of the tubular SOFC battery pack, and two ends of each SOFC single cell in the tubular SOFC battery pack extend out of the sealing covers (so that air can be introduced from one end and exhausted from the other end after reaction); each waste gas reaction cavity is vertically arranged in the tubular SOFC battery pack at intervals, and each waste gas reaction cavity comprises two filter screens, a vent pipe and a multi-stage filter sheet; the two filter screens are vertically arranged and are separated by corresponding intervals, a plurality of first holes are formed in the filter screens for all SOFC monocells to insert and penetrate through, a plurality of second holes are formed in the filter screens for ventilating pipes to insert and penetrate through, and a multi-stage filter is arranged between every two adjacent ventilating pipes; wherein, both sides are equipped with a plurality of fuel inlet pipes and a plurality of tail gas outlet pipe respectively on the sealed lid at tubular SOFC group battery top, and each waste gas reaction chamber top is through mending carbon chamber and communicate in mending the carbon storehouse. The tubular SOFC battery pack comprises a plurality of SOFC single cell layers, each SOFC single cell layer comprises a plurality of SOFC single cells which are arranged side by side, two ends of each SOFC single cell sequentially comprise a cathode, an electrolyte and an anode from inside to outside, the cathode part is the longest, and the anode part is the shortest; cathodes at two ends of each SOFC single cell extend out of the sealing covers.
Example 1:
as shown in fig. 1 to 3, the electrical co-production solid oxide fuel cell stack in the present embodiment includes: the system comprises a fuel inlet pipe 101, a sealing cover 102, a tubular SOFC battery pack 103, a first waste gas reaction cavity 104, a second waste gas reaction cavity 105, a third waste gas reaction cavity 106, a fourth waste gas reaction cavity 107, a carbon supplement cavity 108, a control valve 109, a first carbon bin 110, a second carbon bin 111, a tail gas outlet pipe 112, a cathode 113, an electrolyte 114, an anode 115, a filter screen 116, a vent pipe 117 and a multi-stage filter mesh sheet 118.
Wherein tubular SOFC cell stack 103 comprises 4 SOFC single cells, each SOFC single cell comprising 4 SOFC single cells; both ends of each SOFC single cell sequentially comprise a cathode 113, an electrolyte 114 and an anode 115 from inside to outside, wherein the cathode 113 is longest and the anode 115 is shortest. A sealing cover 102 is clamped around the tubular SOFC battery pack 103 to prevent gas leakage in the operation of the pile; both ends of the cathode 113 of the SOFC single cell are not sealed, and air is introduced from one end and discharged from the other end after reaction.
In this embodiment, there are four fuel inlet pipes 101 and four tail gas outlet pipes 112, the four fuel inlet pipes 101 are connected to one side of the sealing cover 102 on the top of the tubular SOFC cell stack 103, the four tail gas outlet pipes 112 are connected to the other side of the sealing cover 102, and a second carbon bin 111 is disposed in the middle of the tail gas outlet pipes 112 for absorbing water and CO in the tail gas by reaction2。
In this embodiment, the four exhaust reaction chambers are all vertically disposed, and the peripheral wall surfaces without the exhaust reaction chambers are all in close contact with the sealing cover 102, and the openings on the sealing cover are for inserting the SOFC single cells.
The top of each waste gas reaction cavity is sequentially connected with a corresponding carbon supplementing cavity 108, and the top of each carbon supplementing cavity 108 is communicated with a first carbon bin 110. Each carbon supplementing cavity 108 is provided with a corresponding control valve 109 which controls the carbon supplementing cavities according to the consumption condition of carbon powder in each waste gas reaction cavityThe opening of the valve 109 is controlled to meet the stack operating requirements. The first carbon bin 110 supplies carbon to each filter screen through each carbon supplementing cavity 108, and the second carbon bin 111 can react carbon with water vapor and Boudouard to react water and CO in tail gas2And the gas is converted into fuel gas to realize the co-production of electricity.
Each off-gas reaction chamber 107 includes a filter screen 116, a breather pipe 117, and a multi-stage filter 118. Two filter screens 116 in each waste gas reaction cavity are vertically arranged and are separated by a certain distance, each filter screen 116 is provided with twenty-five second holes for inserting the vent pipe 117 in order to avoid too large gas flow resistance besides sixteen first holes for inserting the SOFC battery; and the aperture of the first hole is larger than that of the second hole. The vent pipe 117 of each off-gas reaction chamber 107 has five layers, five for each layer. As shown in fig. 4, a multi-stage filter 118 is disposed between each two adjacent vent tubes 117, the multi-stage filter near the sealing cover 102 is slightly shorter, the middle four pieces are slightly longer, and five layers are provided.
Due to the water and CO generated along the gas flow path in the galvanic pile2Gradually increasing, the distance between two filter screens 116 of the same exhaust reaction chamber 107 gradually increases from the first exhaust reaction chamber 104 to the fourth exhaust reaction chamber 107, that is, the carbon carrying amount sequentially increases from the first exhaust reaction chamber 104 to the fourth exhaust reaction chamber 107. The multistage filter 118 adopts filter sheets with different meshes, and the meshes are sequentially increased from top to bottom, namely: the gaps of the filter screens are sequentially reduced from top to bottom so as to ensure that the carbon powder uniformly falls on each layer of the filter screens and is not completely arranged at the bottom of the battery pack.
Example 2:
as shown in fig. 5 to fig. 7, the electrical co-production solid oxide fuel cell stack of the embodiment includes a fuel inlet pipe 201, a sealing cover 202, a tubular SOFC cell stack 203, a first exhaust reaction chamber 204, a second exhaust reaction chamber 205, a third exhaust reaction chamber 206, a fourth exhaust reaction chamber network 207, a carbon supplement chamber 208, a control valve 209, a first carbon bin 210, a second carbon bin 211, an exhaust outlet pipe 212, a cathode 213, an electrolyte 214, an anode 215, a filter screen 216, a baffle 217, and a multi-stage filter 218.
Different from embodiment 1, there is another exhaust reaction cavity structure design in this embodiment, that is, the front and rear rows of the first exhaust reaction cavity 204, the second exhaust reaction cavity 205, the third exhaust reaction cavity 206, and the fourth exhaust reaction cavity 207 are staggered, each exhaust reaction cavity is vertically placed in the tubular SOFC cell stack 203, the first exhaust reaction cavity 204 and the third exhaust reaction cavity 206 are disposed at the middle position of the tubular SOFC cell stack 203, and baffles 217 are disposed on both sides of the first exhaust reaction cavity 204 and the third exhaust reaction cavity 206 to prevent carbon powder from leaking. The second waste gas reaction cavity 205 and the third waste gas reaction cavity 207 are arranged at two ends of the tubular SOFC cell stack 203, and five layers of multi-stage filter plates 218 are arranged in each waste gas reaction cavity. The waste gas reaction cavity does not need the vent pipe 108, and fuel gas can flow through a gap between the filter screen and the electric pile in the electric pile. It is of course also possible that first exhaust reaction chamber 204 and third exhaust reaction chamber 206 are arranged at two ends of tubular SOFC stack 203, while second exhaust reaction chamber 205 and third exhaust reaction chamber 207 are arranged at a middle position of tubular SOFC stack 203.
The rest of the arrangement is the same as that of the embodiment 1, but in the side-by-side design of the embodiment 1, the addition of the vent pipe 117 enables the fuel gas to be more easily diffused toward the outlet, and the gas transmission resistance is too large if the carbon fuel densely distributed in the off-gas reaction chamber is not added. In the staggered design of embodiment 2, each cell cavity is communicated with each other, and the width of each waste gas reaction cavity is shorter than that in the parallel design, wherein a certain space is left between the two sides of the first waste gas reaction cavity 204 and the third waste gas reaction cavity 206 and between the second waste gas reaction cavity 205 and the third waste gas reaction cavity 207 and the wall surface of the cell stack for the gas to diffuse to the outlet, whereas in the parallel structure design of embodiment 1, each waste gas reaction cavity is completely connected with the wall surface of the cell stack, and therefore, a plurality of vent pipes 117 are arranged.

Claims (8)

1. An electrical co-production solid oxide fuel cell stack, characterized by: comprises a sealing cover (102), a tubular SOFC battery pack (103) and a plurality of waste gas reaction cavities;
the sealing cover (102) is wrapped around the tubular SOFC battery pack (103), and two ends of each SOFC single cell in the tubular SOFC battery pack (103) extend out of the sealing cover (102);
each waste gas reaction cavity is vertically arranged in a tubular SOFC battery pack (103) at intervals, and each waste gas reaction cavity comprises two filter screens (116), a vent pipe (117) and a multi-stage filter sheet (118); the two filter screens (116) are vertically arranged and are spaced at corresponding intervals, a plurality of first holes are formed in the filter screens (116) for the SOFC monocells to insert through, a plurality of second holes are formed in the filter screens (116) for the vent pipes (117) to insert through, and a multi-stage filter sheet (118) is arranged between every two adjacent vent pipes (117);
wherein, a plurality of fuel inlet pipes (101) and a plurality of tail gas outlet pipes (112) are respectively arranged on two sides of a sealing cover (102) at the top of the tubular SOFC battery pack (103), and the top of each waste gas reaction cavity is communicated with a carbon bin through a carbon supplementing cavity (108).
2. The electrical co-production solid oxide fuel cell stack of claim 1, wherein: the tubular SOFC battery pack (103) comprises a plurality of SOFC single cell layers, each SOFC single cell layer comprises a plurality of SOFC single cells which are arranged side by side, two ends of each SOFC single cell sequentially comprise a cathode (113), an electrolyte (114) and an anode (115) from inside to outside, the part of the cathode (113) is the longest, and the part of the anode (115) is the shortest; cathodes (113) at two ends of each SOFC single cell extend out of the sealing cover (102).
3. The electrical co-production solid oxide fuel cell stack of claim 1, wherein: the number of the waste gas reaction chambers is four, and the four waste gas reaction chambers are respectively a first waste gas reaction chamber (104), a second waste gas reaction chamber (105), a third waste gas reaction chamber (106) and a fourth waste gas reaction chamber (107); a first waste gas reaction cavity (104), a second waste gas reaction cavity (105), a third waste gas reaction cavity (106) and a fourth waste gas reaction cavity (107) are sequentially erected in a tubular SOFC battery pack (103) side by side, the top ends of the four waste gas reaction cavities are sequentially connected with corresponding carbon supplementing cavities (108), a first carbon bin (110) is connected to each carbon supplementing cavity (108), and each carbon supplementing cavity (108) is provided with a corresponding control valve (109); a second carbon bin (111) is also arranged in the middle of the tail gas outlet pipe (112); the carbon supplementing cavity (108), the first carbon bin (110) and the second carbon bin (111) are all mounted on a sealing cover (102) at the top of the tubular SOFC battery pack (103).
4. The electrical co-production solid oxide fuel cell stack of claim 1, wherein: the peripheral wall surfaces of the waste gas reaction cavity are tightly contacted with the sealing cover (102).
5. The electrical co-production solid oxide fuel cell stack of claim 1, wherein: the distance between two filter screens in the same waste gas reaction cavity gradually increases from the first waste gas reaction cavity to the last waste gas reaction cavity.
6. The electrical co-production solid oxide fuel cell stack of claim 1, wherein: each multi-stage filter (118) in the same waste gas reaction cavity adopts filter sheets with different meshes, the number of the filter sheets is increased from top to bottom in sequence, namely, the gaps of the filter screens are decreased from top to bottom in sequence.
7. The electrical co-production solid oxide fuel cell stack of claim 1, wherein: the number of the waste gas reaction chambers is four, and the four waste gas reaction chambers are respectively a first waste gas reaction chamber (204), a second waste gas reaction chamber (205), a third waste gas reaction chamber (206) and a fourth waste gas reaction chamber (207); first waste gas reaction chamber (204), second waste gas reaction chamber (205), third waste gas reaction chamber (206), and fourth waste gas reaction chamber (207) staggered arrangement in proper order are stood upright in tubular SOFC group battery (203), wherein, first waste gas reaction chamber (204) and third waste gas reaction chamber (206) are arranged in tubular SOFC group battery (203) intermediate position department, baffle (217) have been arranged to its both sides equipartition, second waste gas reaction chamber (205) and third waste gas reaction chamber (207) are arranged in tubular SOFC group battery (203) both ends position department, these four waste gas reaction chambers equipartition have been put and have been had a plurality of multistage filter discs (218).
8. The electrical co-production solid oxide fuel cell stack of claim 7, wherein: the multistage filter plate (218) is sequentially arranged between the two baffles (217) and the two filter screens (216) from top to bottom.
CN201811478390.8A 2018-12-05 2018-12-05 Electric co-production solid oxide fuel cell stack Active CN109599583B (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8304122B2 (en) * 2009-02-06 2012-11-06 Protonex Technology Corporation Solid oxide fuel cell systems with hot zones having improved reactant distribution
US20110177417A1 (en) * 2010-01-15 2011-07-21 4D Power, LLC Fuel cell stack system having multiple sub-stacks that are replaceable online
CN205609674U (en) * 2016-03-25 2016-09-28 山西大学 Tubular solid oxide fuel cell's group battery
CN108183248B (en) * 2017-12-11 2020-02-18 华南理工大学 Non-sealed single-chip electrolyte direct carbon solid oxide fuel cell pack

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