CN113540539B - SOFC system combining partial oxidation reforming device and steam reforming device - Google Patents
SOFC system combining partial oxidation reforming device and steam reforming device Download PDFInfo
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- CN113540539B CN113540539B CN202110815641.2A CN202110815641A CN113540539B CN 113540539 B CN113540539 B CN 113540539B CN 202110815641 A CN202110815641 A CN 202110815641A CN 113540539 B CN113540539 B CN 113540539B
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- H01—ELECTRIC ELEMENTS
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- C01B2203/00—Integrated processes for the production of hydrogen or synthesis gas
- C01B2203/02—Processes for making hydrogen or synthesis gas
- C01B2203/025—Processes for making hydrogen or synthesis gas containing a partial oxidation step
- C01B2203/0261—Processes for making hydrogen or synthesis gas containing a partial oxidation step containing a catalytic partial oxidation step [CPO]
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- C01B2203/1205—Composition of the feed
- C01B2203/1211—Organic compounds or organic mixtures used in the process for making hydrogen or synthesis gas
- C01B2203/1235—Hydrocarbons
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- 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
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Abstract
The invention discloses a solid oxide fuel cell system combining a partial oxidation catalytic reforming device and a steam reforming device, which comprises a blower, a CPOX device, a primary SOFC (solid oxide fuel cell) stack, an SR (single carrier gas discharge) device, a tail gas combustor, a secondary SOFC stack and a heat exchanger, wherein the heat exchanger is respectively connected with the primary SOFC stack and the tail gas combustor. Hydrogen generated by the CPOX reforming technology without water vapor is fully utilized, and the water vapor generated by the electrochemical reaction after the hydrogen enters the primary SOFC galvanic pile is supplied to the SR device, so that the dependence of the whole system on an external water supply source is eliminated; meanwhile, the high-temperature anode tail gas of the primary SOFC pile can heat the supplemented natural gas, the natural gas is mixed and jointly introduced into the SR device to reach the reaction temperature of the SR device, and the gas after SR reforming can be introduced into the secondary SOFC pile to perform electrochemical reaction; the cathode air quantity and the anode natural gas quantity entering each subsequent electric pile can be supplemented through the external branch pipe, and the balanced series operation of the multi-stage electric piles is realized.
Description
Technical Field
The invention belongs to the technical field of SOFC (solid oxide fuel cell), and particularly relates to an SOFC (solid oxide fuel cell) system combining a partial oxidation catalytic reforming device and a steam reforming device.
Background
With the introduction of the "dual carbon" goal, clean energy is becoming more and more popular. Because the fuel cell has the advantages of high fuel utilization efficiency, no pollution, low noise and the like, governments, research institutions and enterprises in all levels of China all invest a large amount of manpower and material resources, and the development of commercialization of the fuel cell is promoted. A SOlid Oxide Fuel Cell (SOFC) belongs to the third generation Fuel Cell, and is an all-SOlid-state electrochemical power generation device that directly converts chemical energy stored in Fuel into electrical energy at high temperature with high efficiency and environmental friendliness.
SOFC systems are typically composed of components such as a reformer, a stack, a combustor, a heat exchanger, and an inverter. The reformer converts natural gas, biomass gas, alcohols and other fuels entering the system into H as a main component2CO, and CO2Thereby enabling the anode material of the SOFC to stably operate in the fuel gas for a long time and being more beneficial to the electrochemical reaction. Reformer and method of manufacturing the sameThe reforming technology in (1) can be generally classified into Steam Reforming (SR), partial oxidation reforming (CPOX), and the like.
The CPOX reforming technology has low system electrical efficiency, but does not need external deionized water in the reaction process; the system electrical efficiency of the SR reforming technology is high, but the SR reforming process requires deionized water.
Disclosure of Invention
In view of the problems in the related art, the present invention provides an SOFC system combining a partial oxidation reformer and a steam reformer, which overcomes the above-mentioned technical problems of the related art.
The technical scheme of the invention is realized as follows:
an SOFC system incorporating a partial oxidation reformer and a steam reformer comprising a blower, a CPOX device, a heat exchanger, a primary SOFC stack, an SR device, a tail gas combustor, and a secondary SOFC stack;
the air blower blows air and is connected with the heat exchanger through a pipeline, the heat exchanger is respectively connected with the primary SOFC galvanic pile and the tail gas combustor, cathode air is introduced into the primary SOFC galvanic pile through the heat exchanger, and high-temperature tail gas discharged by the tail gas combustor exchanges heat with the cathode air in the heat exchanger, and the high-temperature tail gas and the cathode air are used for increasing the temperature of the cathode air to a specified control temperature and then are introduced into the primary SOFC galvanic pile;
the CPOX device receives CPOX air and natural gas and interfaces with a primary SOFC stack;
mixing the high-temperature galvanic pile cathode tail gas discharged by the primary SOFC galvanic pile with outside air, cooling to a specified control temperature, and then introducing into the cathode of the secondary SOFC galvanic pile, mixing the anode tail gas of the primary SOFC galvanic pile with supplemented natural gas, and then introducing into an SR device, introducing the gas reformed by the SR device into the anode of the secondary SOFC galvanic pile, and connecting the secondary SOFC galvanic pile with a tail gas combustor;
the SR device comprises a waste heat recovery heat exchanger and a steam reformer, the high-temperature anode tail gas of the primary SOFC pile is mixed with supplemented natural gas and then introduced into the steam reformer, one end of the waste heat recovery heat exchanger is connected with the heat exchanger, the other end of the waste heat recovery heat exchanger is connected with the steam reformer, and the steam reformer is connected to the secondary SOFC pile.
Further, the heat exchanger includes that heat transfer outer container, heat transfer inner box, tail gas advance the pipe, tail gas exit tube and tail gas control assembly, the heat transfer inner box is arranged in the heat transfer outer container, it is fixed through the bracing piece between heat transfer inner box and the heat transfer outer container, and form the heat transfer passageway between heat transfer inner box and the heat transfer outer container, the incasement is equipped with the honeycomb duct that is not less than a set of running through in the heat transfer inner box, honeycomb duct and heat transfer passageway intercommunication, the tail gas advances the pipe and the both sides at the heat transfer outer container are fixed to tail gas exit tube symmetry, and the tail gas advances the one end of pipe and tail gas exit tube and all communicates with the heat transfer passageway, and the other end that the pipe was advanced to tail gas and tail gas exit tube connects respectively and meets at tail gas combustor and waste heat recovery heat exchanger, the both sides of heat transfer inner box are connected with air-blower and one-level SOFC electric pile respectively to be connected with temperature sensor on the inner wall of heat transfer inner box.
Further, the tail gas control assembly comprises a left plate, a right plate, a connecting rod, a sliding rail, a spring and a side plate, the sliding rail is fixed on the top wall of the heat exchange outer box above the heat exchange inner box, the side plate is fixed on the sliding rail, a sliding block connected to the middle part of the connecting rod is clamped on the sliding rail, two ends of the spring are respectively connected to the side plate and the sliding block, two ends of the connecting rod are respectively connected to the left plate and the right plate, wherein the left plate is inserted into the tail gas inlet pipe, the right plate is located in the heat exchange channel, the tail gas pushes the left plate and the right plate to move, the spring compresses simultaneously, the left plate is separated from the tail gas inlet pipe and moves into the heat exchange channel, and the right plate moves into the tail gas outlet pipe to be sealed; the tail gas thrust disappears, the spring recovers when the left plate and the right plate move, the left plate is moved into the tail gas inlet pipe to be sealed, and the right plate is moved out of the tail gas outlet pipe to move into the heat exchange channel.
Furthermore, the primary SOFC electric stack, the SR device and the secondary SOFC electric stack form a group of electric stack components, and a plurality of groups of electric stack components can be connected in series.
Furthermore, the number of the cells of the primary SOFC electric stack and the secondary SOFC electric stack is formed according to a certain proportion, and the number of the cells of the primary SOFC electric stack is determined according to the number of the cells of the secondary SOFC electric stack and is less than that of the cells of the secondary SOFC electric stack; the ratio of the number of the cells of the primary SOFC pile to the number of the cells of the secondary SOFC pile is 0.5-1.
Further, the CPOX device is filled with CPOX air and natural gas to react, and the reaction formula is CnHm+0.5nO2→nCO+O.5mH2The mixed reactor anode tail gas and fresh natural gas enter the SR device to react, and the reaction formula is as follows:
further, the CPOX device is used for catalyzing partial oxidation, the SR device is used for steam reforming, and the CPOX device does not need deionized water vapor to participate in reaction and generates gas components meeting the requirements of a reactor reaction; and the SR device fully utilizes the high-temperature steam generated after the reaction of the upper-stage electric reactor to reform the natural gas.
The technical scheme has the following advantages or beneficial effects:
1. the invention provides an SOFC system combining a partial oxidation reforming device and a steam reforming device, wherein cathode air is introduced into a primary SOFC pile through a heat exchanger, and high-temperature tail gas discharged by a tail gas combustor exchanges heat with the cathode air in the heat exchanger, so that the temperature of the cathode air is increased and the cathode air is introduced into the primary SOFC pile; the CPOX apparatus generates gas components (containing hydrogen) required for the reactor reaction without an external water supply; after hydrogen reacts in the primary SOFC pile, anode tail gas of the pile and fresh natural gas are generated and flow into the SR device in a mixed mode, gas reformed by the SR device is introduced into the anode of the secondary SOFC pile, and the secondary SOFC pile is connected with the tail gas combustor; the reforming technology of the CPOX device does not need deionized water, the SR device needs deionized water, hydrogen generated by the reforming technology of the CPOX device is fully utilized, water vapor generated by reaction after entering the primary SOFC galvanic pile is supplied to the SR device, so that the dependence of the whole system on an external water supply source is eliminated, and meanwhile, anode tail gas (containing high-temperature water vapor) of the galvanic pile can be recycled; meanwhile, the gas circuit distribution of the galvanic pile can be adjusted according to external branch pipes, and the balanced series operation of a plurality of galvanic pile components can be realized.
2. The invention provides an SOFC system combining partial oxidation reforming and steam reforming devices.A right plate in a tail gas control assembly is inserted into a tail gas inlet pipe, a left plate is positioned in a heat exchange channel, the tail gas pushes the left plate and the right plate to move and simultaneously a spring is compressed, the left plate is separated from the tail gas inlet pipe and moves into the heat exchange channel, and the right plate moves into the tail gas outlet pipe and is sealed; tail gas thrust disappears, and the spring resumes when left board and right board remove, and left board immigration tail gas is intraductal sealed, and right board shifts out the tail gas exit tube and removes to the heat transfer passageway in, prevents the tail gas backward flow to tail gas improves the efficiency of heat transfer through a plurality of honeycomb ducts in the heat transfer passageway.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a simplified flow diagram of a SOFC system incorporating a partial oxidation reforming and steam reforming device according to an embodiment of the invention;
FIG. 2 is a flow diagram of an SR apparatus of an SOFC system incorporating partial oxidation reforming and steam reforming apparatus according to an embodiment of the present invention;
FIG. 3 is a series diagram of a plurality of stacks of combined partial oxidation reforming and steam reforming apparatus according to an embodiment of the present invention;
FIG. 4 is a block diagram of the heat exchange inner box and flow conduits of a combined partial oxidation reforming and steam reforming apparatus according to an embodiment of the present invention;
fig. 5 is a baffle structure diagram of a SOFC system incorporating a partial oxidation reforming and steam reforming device according to an embodiment of the invention.
In the figure:
1. a blower; 2. a CPOX device; 3. a first-stage SOFC galvanic pile; 4. an SR device; 41. a waste heat recovery heat exchanger; 42. a steam reformer; 5. a tail gas burner; 6. a two-stage SOFC stack; 7. a heat exchanger; 71. a heat exchange outer box; 72. a heat exchange inner box; 721. a flow guide pipe; 73. introducing tail gas into a pipe; 74. an exhaust gas outlet pipe; 75. an exhaust gas control assembly; 751. a left panel; 752. a right plate; 753. a connecting rod; 754. a slide rail; 755. a spring; 756. a side plate; 76. a support rod.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments that can be derived by one of ordinary skill in the art from the embodiments given herein are intended to be within the scope of the present invention.
Referring to fig. 1-5, an SOFC system incorporating a partial oxidation reformer and a steam reformer is shown comprising a blower 1, a CPOX device 2, a primary SOFC stack 3, an SR device 4, a tail gas combustor 5, a secondary SOFC stack 6, and a heat exchanger 7;
the air blower 1 blows air and is connected with a heat exchanger 7 through a pipeline, in addition, the heat exchanger 7 is respectively connected with a waste heat recovery heat exchanger 41, a primary SOFC electric pile 3 and a tail gas combustor 5, tail gas of the tail gas combustor 5 flows into the waste heat recovery heat exchanger 41 through the heat exchanger 7, cathode air flows into the primary SOFC electric pile 3 through the heat exchanger 7, and high-temperature tail gas discharged by the tail gas combustor 5 exchanges heat with the cathode air in the heat exchanger 7 and is used for improving the temperature of the cathode air and is introduced into the primary SOFC electric pile 3;
the CPOX device 2 receives CPOX air and natural gas and is piped to the primary SOFC stack 3;
the cathode tail gas of the high-temperature electric pile discharged by the primary SOFC electric pile 3 is mixed with outside air, cooled to a specified control temperature and then introduced into the cathode of the secondary SOFC electric pile 6, the anode tail gas of the primary SOFC electric pile 3 is mixed with supplemented natural gas and then introduced into the SR device 4, the reformed gas of the SR device 4 is introduced into the anode of the secondary SOFC electric pile 6, and the primary SOFC electric pile 3 is connected with the tail gas combustor 5.
The SR device 4 comprises a waste heat recovery heat exchanger 41 and a steam reformer 42, the high-temperature anode tail gas containing steam of the primary SOFC electric pile 3 is mixed with supplemented natural gas and then is introduced into the steam reformer 42, one end of the waste heat recovery heat exchanger 41 is connected with the heat exchanger 7, the other end of the waste heat recovery heat exchanger 41 is connected with the steam reformer 42, and the steam reformer 42 is connected to the secondary SOFC electric pile 6.
The heat exchanger 7 comprises a heat exchange outer box 71, a heat exchange inner box 72, a tail gas inlet pipe 73, a tail gas outlet pipe 74 and a tail gas control assembly 75, wherein the heat exchange inner box 72 is arranged in the heat exchange outer box 71, the heat exchange inner box 72 and the heat exchange outer box 71 are fixed through a support rod 76, and a heat exchange channel is formed between the heat exchange inner box 72 and the heat exchange outer box 71, no less than one group of through draft tubes 721 are arranged in the heat exchange inner box 72, the draft tubes 721 are communicated with the heat exchange channel, the tail gas inlet pipe 73 and the tail gas outlet pipe 74 are symmetrically fixed on two sides of the heat exchange outer box 71, and one end of a tail gas inlet pipe 73 and one end of a tail gas outlet pipe 74 are both communicated with the heat exchange channel, the other ends of the tail gas inlet pipe 73 and the tail gas outlet pipe 74 are respectively connected with the tail gas combustor 5 and the waste heat recovery heat exchanger 41, the two sides of the heat exchange inner box 72 are respectively connected with the air blower 1 and the primary SOFC electric pile 3, and the inner wall of the heat exchange inner box 72 is connected with a temperature sensor.
The tail gas control assembly 75 comprises a left plate 751, a right plate 752, a connecting rod 753, a sliding rail 754, a spring 755 and a side plate 756, wherein the sliding rail 754 is fixed on the top wall of the heat exchange outer box 71 above the heat exchange inner box 72, the side plate 756 is fixed on the sliding rail 754, a sliding block connected to the middle part of the connecting rod 753 is clamped on the sliding rail 754, the connecting rod 753 slides along the sliding rail 754, two ends of the spring 755 are respectively connected to the side plate 756 and the sliding block, two ends of the connecting rod 753 are respectively connected with the left plate 751 and the right plate 752, wherein the left plate 751 is inserted into the tail gas inlet pipe 73, the right plate 752 is positioned in the heat exchange channel, the spring 751 and the right plate 752 push the left plate 751 and the right plate 752 to move and simultaneously compress, the left plate 751 is separated from the tail gas inlet pipe 73 and moves into the heat exchange channel, and the right plate 752 moves into the tail gas outlet pipe 74 to be sealed; the thrust of the tail gas disappears, the spring 755 recovers when the left plate 751 and the right plate 752 move, the left plate 751 moves into the tail gas inlet pipe 73 to be sealed, the right plate 752 moves out of the tail gas outlet pipe 74 to move into the heat exchange channel to prevent the tail gas from flowing back, and the tail gas passes through the guide pipes 721 in the heat exchange channel to improve the heat exchange efficiency.
The primary SOFC electric pile 3, the SR device 4 and the secondary SOFC electric pile 6 form a group of electric pile components, so that a plurality of groups of electric pile components can be connected in series, the number of the cells of the primary SOFC electric pile 3 and the secondary SOFC electric pile 6 is formed according to a certain proportion, the number of the cells of the primary SOFC electric pile 3 is determined according to the number of the cells of the secondary SOFC electric pile 6 and is less than that of the secondary SOFC electric pile 6; the ratio of the number of cells of the first SOFC stack 3 to the number of cells of the second SOFC stack 6 is 0.5-1, and Table 1 is attached thereto.
TABLE 1 electric Stack series and electric Power and electric efficiency Meter
| Progression (number of series pile) | Electric efficiency (%) | Electric power (kW) | |
| 1 | 36 | 0.6 | |
| 2 | 49 | 1.8 | CPOX+ |
| 3 | 54 | 3.9 | CPOX+ |
| 4 | 57 | 8.2 | CPOX+ |
| 5 | 59 | 15.2 | CPOX+4SR |
The primary SOFC stack 3 is composed of 30 cells, and the secondary SOFC stack 6 is composed of 60 cells.
the CPOX unit 2 is a catalytic partial oxidation, the SR unit 4 is a steam reformer, and the CPOX unit 2 can generate gas components (containing hydrogen) required for the reactor reaction without the need for an external supply of water; after hydrogen reacts in the primary SOFC pile 3, the produced pile anode tail gas and fresh natural gas are mixed and flow into the SR device 4, the gas reformed by the SR device 4 is introduced into the anode of the secondary SOFC pile 6 to eliminate the dependence of the whole system on an external water supply source, and meanwhile, the pile anode tail gas (containing high-temperature water vapor) can be recycled; meanwhile, the gas circuit distribution of the galvanic pile can be adjusted according to external branch pipes, and the balanced series operation of a plurality of galvanic pile components can be realized.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (6)
1. An SOFC system incorporating a partial oxidation reformer and a steam reformer, comprising: the system comprises a blower (1), a partial oxidation reforming device (2), a primary SOFC electric stack (3), a steam reforming device (4), a tail gas combustor (5), a secondary SOFC electric stack (6) and a heat exchanger (7);
the air blower (1) blows air and is connected with the heat exchanger (7) through a pipeline, in addition, the heat exchanger (7) is respectively connected with the primary SOFC electric stack (3) and the tail gas combustor (5), the cathode air blown by the air blower (1) is led into the primary SOFC electric stack (3) through the heat exchanger (7), and the high-temperature tail gas discharged by the tail gas combustor (5) exchanges heat with the cathode air in the heat exchanger (7) and is used for increasing the temperature of the cathode air to a specified temperature and leading the cathode air into the primary SOFC electric stack (3);
the partial oxidation reforming device (2) receives partial oxidation reforming air and natural gas and is connected with a one-stage SOFC electric stack (3);
high-temperature galvanic pile cathode tail gas discharged by the primary SOFC galvanic pile (3) is mixed with fresh air, the temperature of the fresh air is increased, and then the high-temperature galvanic pile cathode tail gas is introduced into the cathode of the secondary SOFC galvanic pile (6), high-temperature anode tail gas of the primary SOFC galvanic pile (3) is mixed with supplemented natural gas and then introduced into a steam reforming device (4), gas reformed by the steam reforming device is introduced into the anode of the secondary SOFC galvanic pile, and the secondary SOFC galvanic pile (6) is connected with a tail gas combustor (5);
the steam reforming device (4) comprises a waste heat recovery heat exchanger (41) and a steam reformer (42), high-temperature anode tail gas of the primary SOFC electric pile (3) is mixed with supplemented natural gas and then is introduced into the steam reformer (42), one end of the waste heat recovery heat exchanger (41) is connected with the heat exchanger (7), the other end of the waste heat recovery heat exchanger (41) is connected with the steam reformer (42), and the steam reformer (42) is connected to the secondary SOFC electric pile (6).
2. The SOFC system combining a partial oxidation reforming device and a steam reforming device as recited in claim 1, wherein the heat exchanger (7) comprises an outer heat exchange box (71), an inner heat exchange box (72), an inlet tail gas pipe (73), an outlet tail gas pipe (74) and a control tail gas assembly (75), the inner heat exchange box (72) is disposed in the outer heat exchange box (71), the inner heat exchange box (72) and the outer heat exchange box (71) are fixed by a support rod (76), a heat exchange channel is formed between the inner heat exchange box (72) and the outer heat exchange box (71), no less than one set of flow guide pipes (721) are disposed in the inner heat exchange box (72), the flow guide pipes (721) are communicated with the heat exchange channel, the inlet tail gas pipe (73) and the outlet tail gas pipe (74) are fixed on two sides of the outer heat exchange box (71), and one end of the inlet tail gas pipe (73) and one end of the outlet tail gas pipe (74) are both communicated with the heat exchange channel, the other ends of the tail gas inlet pipe (73) and the tail gas outlet pipe (74) are respectively connected with the tail gas combustor (5) and the waste heat recovery heat exchanger (41), the two sides of the heat exchange inner box (72) are respectively connected with the air blower (1) and the primary SOFC (solid oxide fuel cell) galvanic pile (3), and the inner wall of the heat exchange inner box (72) is connected with a temperature sensor.
3. The SOFC system combining a partial oxidation reformer and a steam reformer according to claim 2, wherein the off-gas control assembly (75) comprises a left plate (751), a right plate (752), a connecting rod (753), a sliding rail (754), a spring (755) and a side plate (756), the sliding rail (754) is fixed on the top wall of the heat exchange outer case (71) above the heat exchange inner case (72), the side plate (756) is fixed on the sliding rail (754), a sliding block connected to the middle of the connecting rod (753) is clamped on the sliding rail (754), both ends of the spring (755) are respectively connected to the side plate (756) and the sliding block, both ends of the connecting rod (753) are respectively connected to the left plate (751) and the right plate (752), wherein the right plate (752) is inserted into the off-gas inlet pipe (73), the left plate (751) is located in the heat exchange passage, the spring (755) compresses while the off-gas pushes the left plate (751) and the right plate (752) to move, the right plate (752) is separated from the tail gas inlet pipe (73) and moves into the heat exchange channel, and the left plate (751) moves into the tail gas outlet pipe (74) for sealing; the thrust of the tail gas disappears, the spring (755) recovers when the left plate (751) and the right plate (752) move, the left plate (751) moves into the tail gas inlet pipe (73) for sealing, and the right plate (752) moves out of the tail gas outlet pipe (74) and moves into the heat exchange channel.
4. SOFC system combining a partial oxidation reformer and a steam reformer according to claim 3, characterised by the fact that the primary SOFC stack (3), the steam reformer (4) and the secondary SOFC stack (6) are built as a stack of stack components, enabling multiple stacks of stack components to be connected in series.
5. SOFC system with combined partial oxidation reformer and steam reformer according to claim 4, characterized by the fact that the number of cells of the primary SOFC stack (3) and the secondary SOFC stack (6) is proportioned, the number of cells of the primary SOFC stack (3) being determined by the number of cells of the secondary SOFC stack (6) and being smaller than the number of cells of the secondary SOFC stack (6); the ratio of the number of the cells of the primary SOFC electric stack (3) to the number of the cells of the secondary SOFC electric stack (6) is 0.5-1.
6. SOFC system combining a partial oxidation reformer and a steam reformer according to claim 5, characterised by the partial oxidation reformer (2) being catalytic partial oxidation and the steam reformer (4) being steam reforming, the partial oxidation reformer (2) not needing deionized water steam to take part in the reaction; and the steam reforming device (4) fully utilizes the high-temperature steam generated after the previous-stage electric reactor reaction to reform the natural gas.
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| CN104124462A (en) * | 2013-04-25 | 2014-10-29 | 中国科学院宁波材料技术与工程研究所 | Solid oxide fuel cell system for recycling of electric pile anode tail gas |
| CN110890572A (en) * | 2019-11-06 | 2020-03-17 | 华中科技大学 | Solid oxide fuel cell power generation system based on oil fuel |
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