CN220846302U - High-efficiency oxygen ion conductor type solid oxide electrolytic cell system - Google Patents
High-efficiency oxygen ion conductor type solid oxide electrolytic cell system Download PDFInfo
- Publication number
- CN220846302U CN220846302U CN202322610880.1U CN202322610880U CN220846302U CN 220846302 U CN220846302 U CN 220846302U CN 202322610880 U CN202322610880 U CN 202322610880U CN 220846302 U CN220846302 U CN 220846302U
- Authority
- CN
- China
- Prior art keywords
- gas
- cathode
- anode
- cavity
- heat exchanger
- 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.)
- Active
Links
- 239000007787 solid Substances 0.000 title claims abstract description 45
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title claims abstract description 35
- 239000010416 ion conductor Substances 0.000 title claims abstract description 35
- 239000001301 oxygen Substances 0.000 title claims abstract description 35
- 229910052760 oxygen Inorganic materials 0.000 title claims abstract description 35
- 239000007789 gas Substances 0.000 claims description 343
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 19
- 239000001257 hydrogen Substances 0.000 claims description 6
- 229910052739 hydrogen Inorganic materials 0.000 claims description 6
- 125000004435 hydrogen atom Chemical class [H]* 0.000 claims 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 4
- 239000000446 fuel Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000004020 conductor Substances 0.000 description 2
- 238000005868 electrolysis reaction Methods 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229910000510 noble metal Inorganic materials 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003411 electrode reaction Methods 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 239000011244 liquid electrolyte Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Landscapes
- Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
Abstract
The utility model discloses a high-efficiency oxygen ion conductor type solid oxide electrolytic cell system, which belongs to the technical field of electrolytic cells and comprises a three-stage heat exchanger and an electrolytic cell module, wherein the three-stage heat exchanger comprises a first-stage heat exchanger, a second-stage heat exchanger and a third-stage heat exchanger, the third-stage heat exchanger and the electrolytic cell module are integrated together, the first-stage heat exchanger is a low-temperature heat exchanger, the second-stage heat exchanger is a medium-temperature heat exchanger, and the third-stage heat exchanger is a high-temperature heat exchanger. The utility model exchanges heat through the three-stage heat exchanger, integrates the third-stage heat exchanger with the electrolytic cell module, can greatly reduce heat loss, improve energy utilization efficiency, can obviously improve temperature distribution in the electrolytic cell system, can ensure reliable and stable operation when the system operates at high temperature, can realize small temperature difference in the electrolytic cell module when the system is started and stopped, and realizes high-efficiency, stable operation, safe and reliable repeated starting of the oxygen ion conductor type solid oxide electrolytic cell system.
Description
Technical Field
The utility model relates to the technical field of electrolytic cells, in particular to a high-efficiency oxygen ion conductor type solid oxide electrolytic cell system.
Background
Hydrogen production by water electrolysis is an important part of the renewable energy industry. The low-temperature alkaline electrolyzed water and proton exchange membrane electrolyzed water hydrogen production technology has the problems of low energy efficiency (about 70 percent), limited noble metal resources and the like. A Solid Oxide Electrolytic Cell (SOEC) is an electrochemical device that converts electrical and thermal energy into fuel chemical energy in an efficient and environmentally friendly manner at medium and high temperatures. The solid oxide electrolytic cell is of an all-solid structure, gas products are easy to separate, the problems of evaporation, corrosion, electrolyte loss and the like caused by using liquid electrolyte are avoided, meanwhile, the solid oxide electrolytic cell has a high electrode reaction rate, noble metal electrodes such as Pt are not needed, and further the cost is greatly reduced. Solid oxide cells are considered to be the most efficient hydrogen production technology by electrolysis of water, the electrical efficiency of which can reach 100%, but the system efficiency is often only 80-90% or even lower, and the considerable loss of the efficiency is caused by the high working temperature and the great loss of the thermal efficiency of the system. The oxygen ion conductor type solid oxide electrolytic cell has the advantages of high energy conversion efficiency, high space-time yield and the like, but has the problems of high working temperature, poor reliability and the like.
The operating temperature of the oxygen ion conductor type solid oxide electrolytic cell is generally 700-900 ℃, so that heat loss is serious, how to reduce the heat loss of an electrolytic cell system is one of key factors for improving the efficiency of the electrolytic system, and the temperature distribution is uneven on the electrolytic cell easily caused by the fact that a large temperature difference easily exists in the system due to high operating temperature, so that the electrolytic cell is broken, and the reliability of the electrolytic cell is greatly reduced. Thus in solid oxide fuel cell systems, the system design needs to address the following issues: (1) The temperature distribution in the electrolytic cell module is improved, and the reliability of the system is improved; (2) The heat utilization efficiency of the system is improved, the heat integration of the system is realized, and the heat loss is reduced; and (3) the system is started and operated stably safely and reliably.
Thus, there is a need to develop a high efficiency oxygen ion conductor type solid oxide electrolytic cell system.
Disclosure of utility model
In order to solve the technical problems, the utility model discloses a high-efficiency oxygen ion conductor type solid oxide electrolytic cell system which can greatly improve the energy utilization efficiency of a solid oxide electrolytic cell and improve the temperature distribution in the electrolytic cell system, thereby realizing the high-efficiency, stable operation, safe and reliable repeated starting of an oxygen ion conductor type solid oxide fuel electrolytic cell.
In order to achieve the above purpose, the present utility model adopts the following technical scheme:
The high-efficiency oxygen ion conductor type solid oxide electrolytic cell system comprises a three-stage heat exchanger and an electrolytic cell module, wherein the three-stage heat exchanger comprises a first-stage heat exchanger, a second-stage heat exchanger and a third-stage heat exchanger, and the third-stage heat exchanger is integrated with the electrolytic cell module; the third-stage heat exchanger is a high-temperature heat exchanger and is used for carrying out heat exchange on high-temperature gas generated by the electrolytic cell module and gas entering the electrolytic cell module.
Optionally, the heat exchange temperature interval of the first-stage heat exchanger is room temperature to 200 ℃; the top end of the first-stage heat exchanger is provided with a first anode tail gas inlet and a first cathode tail gas inlet, the bottom end of the first-stage heat exchanger is provided with a first anode tail gas outlet and a first cathode tail gas outlet which correspond to the first anode tail gas inlet and the first cathode tail gas inlet, and the first-stage heat exchanger is also provided with a hydrogen-water inlet and a hydrogen-water outlet.
Optionally, the heat exchange temperature interval of the second-stage heat exchanger is 200-500 ℃; the second-stage heat exchanger comprises a second anode heat exchange cavity and a second cathode heat exchange cavity, the second anode heat exchange cavity comprises a second anode gas cavity, a second anode tail gas cavity and a second anode gas distribution cavity, a plurality of second anode gas heat exchange tubes are arranged in the second anode tail gas cavity, a second anode gas inlet is formed in the second anode gas cavity, a second anode tail gas inlet and a second anode tail gas outlet are formed in the second anode tail gas cavity, a second anode gas outlet is formed in the second anode gas distribution cavity, and anode gas in the second anode gas cavity enters the second anode gas distribution cavity through the second anode gas heat exchange tubes; the second cathode heat exchange cavity comprises a second cathode gas cavity, a second cathode tail gas cavity and a second cathode gas distribution cavity, a plurality of second cathode gas heat exchange tubes are arranged in the second cathode tail gas cavity, a second cathode gas inlet is formed in the second cathode gas cavity, a second cathode tail gas inlet and a second cathode tail gas outlet are formed in the second cathode tail gas cavity, a second cathode gas outlet is formed in the second cathode gas distribution cavity, and cathode gas in the second cathode gas cavity enters the second cathode gas distribution cavity through the second cathode gas heat exchange tubes.
Optionally, a second anode gas distributor is installed in the second anode gas distribution cavity, and a second cathode gas distributor is installed in the second cathode gas distribution cavity and is respectively used for uniformly distributing anode gas and cathode gas to the third-stage heat exchanger integrated by each electrolytic cell module.
Optionally, the second anode gas heat exchange tube is used for exchanging heat between anode gas and anode tail gas; and the second cathode gas heat exchange tube is used for carrying out heat exchange between the cathode gas and the cathode tail gas.
Optionally, the heat exchange temperature interval of the third-stage heat exchanger is 500-900 ℃; the third-stage heat exchanger comprises a third anode heat exchange cavity and a third cathode heat exchange cavity, the third anode heat exchange cavity comprises a third anode gas cavity, a third anode tail gas cavity and a third anode gas distribution cavity, a plurality of third anode gas heat exchange tubes are arranged in the third anode tail gas cavity, a third anode gas inlet is formed in one side of the third anode gas cavity, a third anode tail gas inlet is formed in the third anode tail gas cavity, a third anode gas outlet and a third anode gas outlet are formed in the third anode gas distribution cavity, and anode gas in the third anode gas cavity enters the third anode gas distribution cavity through the third anode gas heat exchange tubes; the third cathode heat exchange cavity comprises a third cathode gas cavity, a third cathode tail gas cavity and a third cathode gas distribution cavity; the inside of the third cathode tail gas cavity is provided with a plurality of third cathode gas heat exchange tubes, one side of the third cathode gas cavity is provided with a third cathode gas inlet, the third cathode tail gas cavity is provided with a third cathode tail gas inlet, the third cathode gas distribution cavity is provided with a third cathode tail gas outlet and a third cathode gas outlet, and cathode gas in the third cathode gas cavity enters the third cathode gas distribution cavity through the third cathode gas heat exchange tubes.
Optionally, the upper and lower sides of the third-stage heat exchanger are respectively provided with an electrolytic cell module, and the third-stage heat exchanger and the upper and lower electrolytic cell modules are integrated into a third-stage heat exchanger-electrolytic cell stack integrated structure.
Optionally, the number of third stage heat exchanger-cell stack integrated structures is n groups, where n is greater than or equal to 1.
The three-stage heat exchange electrolytic cell system has the advantages that heat exchange is performed through the three-stage heat exchanger, and the third-stage high-temperature heat exchanger and the electrolytic cell module are directly integrated, so that heat loss of the system can be greatly reduced, energy utilization efficiency of the oxygen ion conductor type solid oxide electrolytic cell system is improved, temperature distribution in the electrolytic cell system can be remarkably improved, reliable and stable operation of the proton conductor type solid oxide electrolytic cell system can be ensured when the proton conductor type solid oxide electrolytic cell system operates at high temperature, temperature difference on an electrolytic cell in the electrolytic cell module is small when the electrolytic cell system starts and stops, and efficient, stable operation, safe and reliable repeated starting of the oxygen ion conductor type solid oxide electrolytic cell system can be realized.
Drawings
FIG. 1 is a schematic diagram of a system of a high-efficiency oxygen ion conductor type solid oxide electrolytic cell of the present utility model;
FIG. 2 is a schematic view of a first stage heat exchanger according to the present utility model;
FIG. 3 is a schematic view of a second stage heat exchanger according to the present utility model;
FIG. 4 is a schematic view of a third stage heat exchanger according to the present utility model;
FIG. 5 is a schematic view of a third stage heat exchanger-cell stack assembly of the present utility model.
1, A first-stage heat exchanger; 1-1, a hydrogen-water inlet; 1-2, a first anode tail gas inlet; 1-3, a first cathode tail gas inlet; 1-4, a hydrogen-water outlet; 1-5, a first cathode tail gas outlet; 1-6, a first anode tail gas outlet; 2. a second stage heat exchanger; 2-1, a second anode gas inlet; 2-2, a second anode gas chamber; 2-3, a second anode tail gas inlet; 2-4, a second anode gas heat exchange tube; 2-5, a second anode tail gas cavity; 2-6, a second anode tail gas outlet; 2-7, a second anode gas distributor; 2-8, a second anode gas distribution chamber; 2-9, a second anode gas outlet; 2-10, a second cathode gas outlet; 2-11, a second cathode gas distribution chamber; 2-12, a second cathode gas distributor; 2-13, a second cathode tail gas outlet; 2-14, a second cathode gas heat exchange tube; 2-15, a second cathode tail gas cavity; 2-16, a second cathode tail gas inlet; 2-17, a second cathode gas chamber; 2-18, a second cathode gas inlet; 3. a third stage heat exchanger; 3-1, a third anode gas inlet; 3-2, a third anode gas chamber; 3-3, a third anode gas heat exchange tube; 3-4, a third anode tail gas cavity; 3-5, a third anode gas distribution chamber; 3-6, a third anode tail gas outlet; 3-7 and 3-8, a third anode gas outlet; 3-9 and 3-10, a third cathode gas outlet; 3-11, a third cathode tail gas outlet; 3-12, a third cathode gas distribution chamber; 3-13, a third cathode gas heat exchange tube; 3-14, a third cathode tail gas cavity; 3-15, a third cathode gas chamber; 3-16, a third cathode gas inlet; 3-17 and 3-18, a third cathode tail gas inlet; 3-19 and 3-20, a third anode tail gas inlet; 4. third stage heat exchanger-cell stack integrated structure.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
The efficient and comprehensive utilization of each heat energy in the solid oxide electrolytic cell system is an important component for establishing a stable, easily-controlled and highly-integrated system structure. Aiming at the characteristics and the requirements of an oxygen ion conductor type solid oxide electrolytic cell system, the utility model discloses a high-efficiency oxygen ion conductor type solid oxide electrolytic cell system which comprises a three-stage heat exchanger and an oxygen ion conductor type solid oxide electrolytic cell module.
1-4, A high-efficiency oxygen ion conductor type solid oxide electrolytic cell system comprises a three-stage heat exchanger and an electrolytic cell module, wherein the three-stage heat exchanger comprises a first-stage heat exchanger 1, a second-stage heat exchanger 2 and a third-stage heat exchanger 3, and the third-stage heat exchanger 3 is integrated with the electrolytic cell module, the first-stage heat exchanger 1 is a low-temperature heat exchanger and is used for gasifying water vapor and primary preheating of water vapor and hydrogen, the second-stage heat exchanger 2 is a medium-temperature heat exchanger and is used for exchanging heat of anode gas and cathode gas with high-temperature gas discharged through the third-stage heat exchanger 3, and the cathode gas and the anode gas after heat exchange are uniformly distributed to the third-stage heat exchanger 3; the third stage heat exchanger 3 is a high temperature heat exchanger for exchanging heat between the high temperature gas generated by the electrolytic cell module and the gas entering the electrolytic cell module.
As shown in fig. 2, the heat exchange temperature interval of the first-stage heat exchanger 1 is room temperature to 200 ℃; the top end of the first-stage heat exchanger 1 is provided with a first anode tail gas inlet 1-2 and a first cathode tail gas inlet 1-3, the bottom end of the first-stage heat exchanger 1 is provided with a first anode tail gas outlet 1-6 and a first cathode tail gas outlet 1-5 which correspond to the first anode tail gas inlet 1-2 and the first cathode tail gas inlet 1-3, and the first-stage heat exchanger 1 is also provided with a hydrogen-water inlet 1-1 and a hydrogen-water outlet 1-4.
As shown in fig. 3, the heat exchange temperature interval of the second-stage heat exchanger 2 is 200-500 ℃; the second-stage heat exchanger 2 comprises a second anode heat exchange cavity and a second cathode heat exchange cavity, the second anode heat exchange cavity comprises a second anode gas cavity 2-2, a second anode tail gas cavity 2-5 and a second anode gas distribution cavity 2-8, a plurality of second anode gas heat exchange tubes 2-4 are arranged in the second anode tail gas cavity 2-5, the second anode gas cavity 2-2 is provided with a second anode gas inlet 2-1, the second anode tail gas cavity 2-5 is provided with a second anode tail gas inlet 2-3 and a second anode tail gas outlet 2-6, the second anode gas distribution cavity 2-8 is provided with a second anode gas outlet 2-9, and anode gas in the second anode gas cavity 2-2 enters the second anode gas distribution cavity 2-8 through the second anode gas heat exchange tubes 2-4; the second cathode heat exchange cavity comprises a second cathode gas cavity 2-17, a second cathode tail gas cavity 2-15 and a second cathode gas distribution cavity 2-11, a plurality of second cathode gas heat exchange tubes 2-14 are arranged in the second cathode tail gas cavity 2-15, a second cathode gas inlet 2-18 is arranged in the second cathode gas cavity 2-17, a second cathode tail gas inlet 2-16 and a second cathode tail gas outlet 2-13 are arranged in the second cathode tail gas cavity 2-15, a second cathode gas outlet 2-10 is arranged in the second cathode gas distribution cavity 2-11, and cathode gas in the second cathode gas cavity 2-17 enters the second cathode gas distribution cavity 2-11 through a second cathode gas heat exchange 2-14 tube.
Optionally, a second anode gas distributor 2-7 is installed in the second anode gas distribution cavity 2-8, and a second cathode gas distributor 2-12 is installed in the second cathode gas distribution cavity 2-11 and is respectively used for uniformly distributing anode gas and cathode gas to a third-stage heat exchanger integrated by each electrolytic cell module.
Optionally, the second anode gas heat exchange tube 2-4 is used for exchanging heat between anode gas and anode tail gas; and the second cathode gas heat exchange tube 2-14 is used for carrying out heat exchange between the cathode gas and the cathode tail gas.
The heat exchange temperature interval of the third-stage heat exchanger 3 is 500-900 ℃; the third-stage heat exchanger 3 comprises a third anode heat exchange cavity and a third cathode heat exchange cavity, the third anode heat exchange cavity comprises a third anode gas cavity 3-2, a third anode tail gas cavity 3-4 and a third anode gas distribution cavity 3-5, a plurality of third anode gas heat exchange tubes 3-3 are arranged in the third anode tail gas cavity 3-4, a third anode gas inlet 3-1 is arranged on one side of the third anode gas cavity 3-2, a third anode tail gas inlet 3-19 and 3-20 are arranged in the third anode tail gas cavity 3-4, a third anode gas outlet 3-6, a third anode gas outlet 3-7 and 3-8 are arranged in the third anode gas distribution cavity 3-5, and anode gas in the third anode gas cavity 3-2 enters the third anode gas distribution cavity 3-5 through the third anode gas heat exchange tubes 3-3; the third cathode heat exchange cavity comprises a third cathode gas cavity 3-15, a third cathode tail gas cavity 3-14 and a third cathode gas distribution cavity 3-12; the inside of the third cathode tail gas cavity 3-14 is provided with a plurality of third cathode gas heat exchange tubes 3-13, one side of the third cathode gas cavity 3-15 is provided with a third cathode gas inlet 3-16, the third cathode tail gas cavity 3-14 is provided with third cathode tail gas inlets 3-17 and 3-18, the third cathode gas distribution cavity 3-12 is provided with a third cathode tail gas outlet 3-11, third cathode gas outlets 3-9 and 3-10, and cathode gas in the third cathode gas cavity 3-15 enters the third cathode gas distribution cavity 3-12 through the third cathode gas heat exchange tubes 3-13.
Optionally, the upper surface and the lower surface of the third-stage heat exchanger 3 are respectively provided with an electrolytic cell module, the third-stage heat exchanger and the upper and lower electrolytic cell modules are integrated into a third-stage heat exchanger-electrolytic cell stack integrated structure 4, so that efficient heat exchange between the heat generated by the electrolytic cell module and the gas entering the electrolytic cell module is effectively realized, the heat loss is greatly reduced, and the number of the third-stage heat exchanger-electrolytic cell stack integrated structures 4 is n groups, wherein n is more than or equal to 1.
The working method of the high-efficiency oxygen ion conductor type solid oxide electrolytic cell system comprises the following steps:
Step S1, cathode gas (hydrogen and water) enters a first-stage heat exchanger 1 through a hydrogen-water inlet 1-1, anode tail gas and cathode tail gas enter the first-stage heat exchanger 1 through a first anode tail gas inlet 1-2 and a first cathode tail gas inlet 1-3 respectively, heat exchange is carried out on the anode gas and the cathode gas, the anode gas and the cathode gas are discharged through a first cathode tail gas outlet 1-5 and a first anode tail gas outlet 1-6 respectively, and preheated cathode gas is discharged through a hydrogen-water outlet 1-4;
Step S2, the cathode gas preheated in step S1 enters the second-stage heat exchanger 2 through the second cathode gas inlet 2-18, exchanges heat with the cathode tail gas entering through the second cathode tail gas inlet 2-16, enters the second cathode gas distribution cavity 2-11, passes through the second cathode gas distributor 2-12 and is uniformly distributed to the third-stage heat exchanger 3 through the second cathode gas outlet 2-10; anode gas enters the second-stage heat exchanger 2 through the second anode gas inlet 2-1, exchanges heat with anode tail gas entering through the second anode tail gas inlet 2-3, enters the second anode gas distribution cavity 2-8, passes through the second anode gas distributor 2-7 and is uniformly distributed to the third-stage heat exchanger 3 through the second anode gas outlet 2-9;
Step S3, the cathode gas preheated in the step S2 enters the third-stage heat exchanger 3 through the third cathode gas inlet 3-16, exchanges heat with the cathode tail gas entering through the third cathode tail gas inlets 3-17 and 3-18, enters the third cathode gas distribution cavity 3-12, and is distributed to the electrolytic cell module through the third cathode gas outlets 3-9 and 3-10; the preheated anode gas enters the third-stage heat exchanger 3 through the third anode gas inlet 3-1, exchanges heat with the anode tail gas entering through the third anode tail gas inlets 3-19 and 3-20, enters the third anode gas distribution cavity 3-5, and is distributed to the electrolytic cell module through the third anode gas outlets 3-19 and 3-20.
The high-efficiency oxygen ion conductor type solid oxide electrolytic cell system comprises:
1. The system can realize safe and stable starting of the oxygen ion conductor type solid oxide electrolytic cell part, the temperature of gas entering the electrolytic cell system is smaller than the temperature difference in the electrolytic cell through three-stage heat exchange in the starting process, and the preheated anode gas and the preheated cathode gas enter the electrolytic cell module to uniformly and stably heat the electrolytic cell module until the normal operation of the electrolytic cell is stable.
2. The system can realize the reliable and stable operation of the oxygen ion conductor type solid oxide electrolytic cell, when the electrolytic cell module is in electrolytic operation, different heat can be released under different electrolytic conditions, the released heat can be brought out in time and preheated for the entering anode gas and cathode gas through the third-stage heat exchanger and the electrolytic cell integration, the larger temperature fluctuation on the electrolytic cell module is avoided, and the reliable and stable operation of the electrolytic cell module can be realized.
3. The system can also realize the stable and safe shutdown of the oxygen ion conductor type solid oxide electrolytic cell system, and when the operation of the electrolytic cell module is required to be stopped, the heating power can be reduced, and simultaneously, the anode gas and the cathode gas which are stably cooled are continuously introduced into the electrolytic cell module through three-stage gas heat exchange, so that the oxygen ion conductor type solid oxide electrolytic cell is stably and reliably stopped under the protection of the gas.
In summary, the efficient oxygen ion conductor type solid oxide electrolytic cell system can realize heat exchange through the three-stage heat exchanger, and the three-stage heat exchange electrolytic cell system structure which directly integrates the third-stage high-temperature heat exchanger and the electrolytic cell module can greatly reduce heat loss of the system, improve efficiency of the oxygen ion conductor type solid oxide electrolytic cell system, remarkably improve temperature distribution in the electrolytic cell system, ensure reliable and stable operation of the oxygen ion conductor type solid oxide electrolytic cell system when the oxygen ion conductor type solid oxide electrolytic cell system operates, realize small temperature difference on an electrolytic cell in the electrolytic cell module when the electrolytic cell system starts and stops, realize efficient, stable operation, safe and reliable repeated start-stop of the oxygen ion conductor type solid oxide electrolytic cell system, and realize higher electrolytic efficiency of the system.
It should be understood that the above description is not intended to limit the utility model to the particular embodiments disclosed, but to limit the utility model to the particular embodiments disclosed, and that the utility model is not limited to the particular embodiments disclosed, but is intended to cover modifications, adaptations, additions and alternatives falling within the spirit and scope of the utility model.
Claims (7)
1. The high-efficiency oxygen ion conductor type solid oxide electrolytic cell system is characterized by comprising a three-stage heat exchanger and an electrolytic cell module, wherein the three-stage heat exchanger comprises a first-stage heat exchanger, a second-stage heat exchanger and a third-stage heat exchanger, and the third-stage heat exchanger and the electrolytic cell module are integrated together, the first-stage heat exchanger is a low-temperature heat exchanger and is used for gasifying water vapor and primary preheating of the water vapor and hydrogen, the second-stage heat exchanger is a medium-temperature heat exchanger and is used for exchanging heat of anode gas and cathode gas with high-temperature gas discharged through the third-stage heat exchanger, and the cathode gas and the anode gas after heat exchange are uniformly distributed to the third-stage heat exchanger; the third-stage heat exchanger is a high-temperature heat exchanger and is used for carrying out heat exchange on high-temperature gas generated by the electrolytic cell module and gas entering the electrolytic cell module.
2. The high-efficiency oxygen ion conductor type solid oxide electrolytic cell system as claimed in claim 1, wherein the heat exchange temperature range of the first-stage heat exchanger is room temperature to 200 ℃; the top end of the first-stage heat exchanger is provided with a first anode tail gas inlet and a first cathode tail gas inlet, the bottom end of the first-stage heat exchanger is provided with a first anode tail gas outlet and a first cathode tail gas outlet which correspond to the first anode tail gas inlet and the first cathode tail gas inlet, and the first-stage heat exchanger is also provided with a hydrogen-water inlet and a hydrogen-water outlet.
3. The high-efficiency oxygen ion conductor type solid oxide electrolytic cell system as claimed in claim 1, wherein the heat exchange temperature interval of the second-stage heat exchanger is 200-500 ℃; the second-stage heat exchanger comprises a second anode heat exchange cavity and a second cathode heat exchange cavity, the second anode heat exchange cavity comprises a second anode gas cavity, a second anode tail gas cavity and a second anode gas distribution cavity, a plurality of second anode gas heat exchange tubes are arranged in the second anode tail gas cavity, a second anode gas inlet is formed in the second anode gas cavity, a second anode tail gas inlet and a second anode tail gas outlet are formed in the second anode tail gas cavity, a second anode gas outlet is formed in the second anode gas distribution cavity, and anode gas in the second anode gas cavity enters the second anode gas distribution cavity through the second anode gas heat exchange tubes; the second cathode heat exchange cavity comprises a second cathode gas cavity, a second cathode tail gas cavity and a second cathode gas distribution cavity, a plurality of second cathode gas heat exchange tubes are arranged in the second cathode tail gas cavity, a second cathode gas inlet is formed in the second cathode gas cavity, a second cathode tail gas inlet and a second cathode tail gas outlet are formed in the second cathode tail gas cavity, a second cathode gas outlet is formed in the second cathode gas distribution cavity, and cathode gas in the second cathode gas cavity enters the second cathode gas distribution cavity through the second cathode gas heat exchange tubes.
4. A high efficiency oxygen ion conductor type solid oxide electrolytic cell system as claimed in claim 3 wherein the second anode gas distribution chamber is internally provided with a second anode gas distributor, and the second cathode gas distribution chamber is internally provided with a second cathode gas distributor for uniformly distributing anode gas and cathode gas to the third stage heat exchanger integrated with each electrolytic cell module respectively.
5. The high-efficiency oxygen ion conductor type solid oxide electrolytic cell system as claimed in claim 1, wherein the heat exchange temperature range of the third-stage heat exchanger is 500-900 ℃; the third-stage heat exchanger comprises a third anode heat exchange cavity and a third cathode heat exchange cavity, the third anode heat exchange cavity comprises a third anode gas cavity, a third anode tail gas cavity and a third anode gas distribution cavity, a plurality of third anode gas heat exchange tubes are arranged in the third anode tail gas cavity, a third anode gas inlet is formed in one side of the third anode gas cavity, a third anode tail gas inlet is formed in the third anode tail gas cavity, a third anode gas outlet and a third anode gas outlet are formed in the third anode gas distribution cavity, and anode gas in the third anode gas cavity enters the third anode gas distribution cavity through the third anode gas heat exchange tubes; the third cathode heat exchange cavity comprises a third cathode gas cavity, a third cathode tail gas cavity and a third cathode gas distribution cavity; the inside of the third cathode tail gas cavity is provided with a plurality of third cathode gas heat exchange tubes, one side of the third cathode gas cavity is provided with a third cathode gas inlet, the third cathode tail gas cavity is provided with a third cathode tail gas inlet, the third cathode gas distribution cavity is provided with a third cathode tail gas outlet and a third cathode gas outlet, and cathode gas in the third cathode gas cavity enters the third cathode gas distribution cavity through the third cathode gas heat exchange tubes.
6. A high efficiency oxygen ion conductor type solid oxide electrolytic cell system as claimed in claim 1 wherein the upper and lower sides of the third stage heat exchanger are electrolytic cell modules, and the third stage heat exchanger and the upper and lower electrolytic cell modules are integrated to form a third stage heat exchanger-electrolytic cell stack integrated structure.
7. The system of claim 6, wherein the number of third stage heat exchanger-cell stacks is n, where n is greater than or equal to 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322610880.1U CN220846302U (en) | 2023-09-26 | 2023-09-26 | High-efficiency oxygen ion conductor type solid oxide electrolytic cell system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322610880.1U CN220846302U (en) | 2023-09-26 | 2023-09-26 | High-efficiency oxygen ion conductor type solid oxide electrolytic cell system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220846302U true CN220846302U (en) | 2024-04-26 |
Family
ID=90740862
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322610880.1U Active CN220846302U (en) | 2023-09-26 | 2023-09-26 | High-efficiency oxygen ion conductor type solid oxide electrolytic cell system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220846302U (en) |
-
2023
- 2023-09-26 CN CN202322610880.1U patent/CN220846302U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112993362A (en) | Energy regeneration circulating device of hydrogen-oxygen fuel cell | |
| CN215481305U (en) | PEM (proton exchange membrane) water electrolysis hydrogen production waste heat utilization device | |
| CN220099216U (en) | AEM electrolytic water hydrogen production integrated equipment | |
| CN104733746A (en) | Low-temperature and medium-temperature fuel cell combined operation system | |
| CN2893940Y (en) | Generative energy and fuel battery coupling power generator | |
| CN220846302U (en) | High-efficiency oxygen ion conductor type solid oxide electrolytic cell system | |
| CN112038660B (en) | Solid oxide fuel cell stack based on symmetrical double-cathode structure | |
| CN117305873A (en) | High-efficiency oxygen ion conductor type solid oxide electrolytic cell system and working method | |
| CN109888357B (en) | Solid oxide fuel cell power generation system and use method thereof | |
| CN215209640U (en) | Proton exchange membrane electrolytic hydrogen production device based on photovoltaic cell | |
| CN115036549B (en) | High power solid oxide fuel cell/electrolyser system | |
| CN203690408U (en) | Joint operation system for low-temperature and medium-high temperature fuel cells | |
| CN217922341U (en) | Container type integrated electricity-hydrogen co-production device with heat management | |
| CN220846303U (en) | Energy-coupled proton conductor type solid oxide electrolytic cell system | |
| CN114955997B (en) | Distributed natural gas hydrogen production system | |
| CN102280645B (en) | Molten carbonate fuel cell bipolar plate and manufacturing method thereof | |
| CN114142071B (en) | Combined heat and power operation method and system for multi-stack solid oxide fuel cell | |
| CN115172836A (en) | Single-section multi-chamber megawatt fuel cell stack | |
| CN215365999U (en) | Megawatt power station | |
| CN213483789U (en) | Air-cooled normal-pressure open electric pile multi-lamination single pile structure | |
| CN214226971U (en) | Energy regeneration circulating device of hydrogen-oxygen fuel cell | |
| CN210403905U (en) | Heating system for heating formic acid reactor by using waste heat of fuel cell | |
| CN117305875A (en) | Energy-coupled proton conductor type solid oxide electrolytic cell system and working method | |
| CN202423476U (en) | Heat-exchange system | |
| CN112993315A (en) | Heat coupling methanol reforming hydrogen production fuel cell system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |