CN114976168B - Electric heating oxygen production and supply system for power generation and ammonia electrochemical combined production and storage - Google Patents
Electric heating oxygen production and supply system for power generation and ammonia electrochemical combined production and storage Download PDFInfo
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- CN114976168B CN114976168B CN202210598548.5A CN202210598548A CN114976168B CN 114976168 B CN114976168 B CN 114976168B CN 202210598548 A CN202210598548 A CN 202210598548A CN 114976168 B CN114976168 B CN 114976168B
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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
- H01M8/10—Fuel cells with solid electrolytes
- H01M8/12—Fuel cells with solid electrolytes operating at high temperature, e.g. with stabilised ZrO2 electrolyte
- H01M8/1231—Fuel cells with solid electrolytes operating at high temperature, e.g. with stabilised ZrO2 electrolyte with both reactants being gaseous or vaporised
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- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B13/00—Oxygen; Ozone; Oxides or hydroxides in general
- C01B13/02—Preparation of oxygen
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B1/00—Electrolytic production of inorganic compounds or non-metals
- C25B1/01—Products
- C25B1/27—Ammonia
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
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- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04007—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids related to heat exchange
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- H01M8/04067—Heat exchange or temperature measuring elements, thermal insulation, e.g. heat pipes, heat pumps, fins
- H01M8/04074—Heat exchange unit structures specially adapted for fuel cell
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- H01M8/00—Fuel cells; Manufacture thereof
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- H01M8/04082—Arrangements for control of reactant parameters, e.g. pressure or concentration
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- 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
- H01M8/0656—Combination of fuel cells with means for production of reactants or for treatment of residues with means for production of gaseous reactants by electrochemical means
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- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/10—Fuel cells with solid electrolytes
- H01M8/12—Fuel cells with solid electrolytes operating at high temperature, e.g. with stabilised ZrO2 electrolyte
- H01M8/124—Fuel cells with solid electrolytes operating at high temperature, e.g. with stabilised ZrO2 electrolyte characterised by the process of manufacturing or by the material of the electrolyte
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- 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
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Abstract
The invention relates to the field of distributed power generation of fuel cells, in particular to an electrothermal oxygen generation and supply system for combined ammonia electrochemical production and storage, which solves the problem that a large amount of high-pressure hydrogen storage tanks are needed in a distributed power generation system. The device comprises an air separation device, an electrochemical synthesis ammonia reactor, an oxygen storage tank, an energy storage battery, a power generation device, a liquid ammonia storage tank, a first heat exchanger, a second heat exchanger, a third heat exchanger, a fourth heat exchanger, an ammonia fuel high-temperature solid oxide fuel cell and a tail gas burner, wherein the anode and cathode outlets of the ammonia fuel high-temperature solid oxide fuel cell are communicated with the tail gas burner, and the output end of the tail gas burner is respectively communicated with the hot end inlets of the first heat exchanger, the second heat exchanger, the third heat exchanger and the fourth heat exchanger. It eliminates the volatility and randomness of new energy power generation system.
Description
Technical Field
The invention belongs to the field of fuel cell distributed power generation, and particularly relates to an electrothermal oxygen generation and supply system for combined power generation and ammonia electrochemical production and storage.
Background
In the background of increasingly serious greenhouse effect, the carbon reduction trend has become an unblockable climax; in the carbon emission industry of China, energy sources are the first to run against, and the department with the largest proportion in the energy industry is power generation; under the trigger, the new energy industry is not negative and expected naturally, and the photovoltaic and wind power industry is developed rapidly under the strong support of domestic policies;
however, the photovoltaic and wind power generation devices have the characteristics of volatility, randomness and the like in the aspect of power generation, so that in order to be suitable for a distributed power generation technology, stable power supply can be realized, and an energy storage device is arranged in a general power generation system;
common energy storage devices comprise electrochemical energy storage, compressed air energy storage, flywheel energy storage, superconducting energy storage, pumping energy storage, flywheel energy storage, hydrogen production energy storage and other modes; the energy storage modes have differences in energy conversion efficiency, energy storage capacity, response time, power density, energy density, service life and the like; the super capacitor, the superconducting energy storage and the flywheel energy storage have the characteristics of high response speed and high power density, but the total energy storage amount and the duration are limited; the compressed air energy storage and the water pumping energy storage have the characteristics of high density and long energy storage time, but are generally suitable for high-power application scenes with the energy storage of more than 10MW and have high energy storage cost; electrochemical energy storage such as sodium-sulfur batteries, lead-acid batteries, lithium batteries and the like has the advantages of low energy storage cost, long duration and high charge and discharge speed, so that the electrochemical energy storage is widely applied, but hidden danger exists in the aspect of safety;
the hydrogen production and energy storage are to electrolyze water by using the electric power generated by the new energy to prepare hydrogen, store the hydrogen in a high-pressure gas tank, and then introduce a hydrogen fuel cell to generate electricity, so that the fluctuation of the new energy generation can be eliminated; the technical means has the advantages of mature technology and high system safety and reliability, so the technical means is accepted in the distributed power generation technology; however, the energy density and the power density of the hydrogen are low, and in order to store enough energy, a great amount of investment is required to construct a hydrogen storage high-pressure tank;
it has become a major problem to design a power generation system capable of avoiding a large amount of hydrogen storage.
Ammonia is regarded as sustainable fuel as a hydrogen-rich substance, and is an ideal carrier of hydrogen energy; on one hand, the solid oxide fuel cell taking ammonia as fuel can realize zero carbon emission power generation; on the other hand, ammonia has the advantages of high energy storage density, long energy storage period, convenience for long-distance transportation, capability of realizing the poly-generation of oxygen, hydrogen and electric power, and the like. Ammonia can be stored in the form of liquid ammonia at normal pressure-33 ℃ or normal temperature 1MPa, and the storage cost of the liquid ammonia is 1/3 of that of the high-pressure hydrogen storage technology with the same hydrogen content.
Disclosure of Invention
In view of the above, the present invention aims to provide an electrothermal oxygen generation and supply system for combined ammonia electrochemical production and storage, so as to solve the problem that a distributed power generation system needs a large amount of high-pressure hydrogen storage tanks.
In order to achieve the above purpose, the present invention adopts the following technical scheme: the utility model provides a power generation and supply system is produced to electricity generation combination ammonia electrochemical system that stores up usefulness, includes air separation device, electrochemical synthesis ammonia reactor, oxygen storage tank, energy storage battery, power generation facility, liquid ammonia storage tank, first heat exchanger, second heat exchanger, third heat exchanger, fourth heat exchanger, ammonia fuel high temperature solid oxide fuel cell and tail gas combustor, the electric power input of energy storage battery links to each other with power generation facility, and the output links to each other with air separation device and electrochemical synthesis ammonia reactor respectively, air separation device's oxygen output links to each other with the oxygen storage tank, and the nitrogen gas output communicates with the cold junction entry of third heat exchanger, and the cold junction export of third heat exchanger communicates with the cathode inlet of electrochemical synthesis ammonia reactor, the cold junction entry of fourth heat exchanger lets in water, the cold junction export of fourth heat exchanger communicates with the positive electrode entry of electrochemical synthesis ammonia reactor, the positive electrode export and the oxygen storage tank of electrochemical synthesis ammonia reactor, and the negative electrode export carries to the liquid ammonia storage tank after cooling pressurization, the export of second heat exchanger links to the cold junction entry of second heat exchanger, the cold junction export of ammonia fuel cell and the fuel high temperature solid oxide fuel cell and the solid oxide fuel cell, the negative electrode entry of the fuel high temperature fuel cell and the negative electrode entry of the fourth heat exchanger link to each other with the cold junction entry of the solid oxide fuel of the third heat exchanger, the oxygen storage tank, the cold junction entry of the fuel of the fourth heat exchanger and the oxygen combustor links to each other with the cold junction entry of the oxygen of the solid oxide fuel of the fourth heat exchanger.
Further, the power generation device is a wind power generation device or a photovoltaic power generation device.
Further, the molar ratio of nitrogen entering the cathode of the electrochemical synthesis ammonia reactor to water entering the anode was 1:3.
Further, the nitrogen at the cathode outlet of the electrochemical synthesis ammonia reactor was cooled to 25 ℃ and pressurized to 1MPa before entering the liquid ammonia storage tank.
Further, the temperature range of the air after being heated by the first heat exchanger is 600-700 ℃.
Further, the temperature range of the ammonia gas after being heated by the second heat exchanger is 600-700 ℃.
Further, the ammonia fuel high temperature solid oxide fuel cell is electrically connected to an energy storage cell.
Furthermore, a diverter is further arranged between the electrochemical ammonia synthesis reactor and the liquid ammonia storage tank, the input end of the diverter is communicated with the cathode outlet of the electrochemical ammonia synthesis reactor, and the two output ends of the diverter are respectively communicated with the liquid ammonia storage tank and the cold end inlet of the second heat exchanger.
Further, the output products of the ammonia fuel high temperature solid oxide fuel cell are hot water and electricity.
Furthermore, the heat output of the tail gas burner is output through a main pipeline, and the main pipeline is communicated with the first heat exchanger, the second heat exchanger, the third heat exchanger and the fourth heat exchanger through four branch pipelines respectively.
Compared with the prior art, the invention has the beneficial effects that:
1. the whole distributed power generation system has no carbon element participation, can realize zero emission of CO2, simultaneously utilizes ammonia as a carrier of hydrogen to store energy, and can eliminate the volatility and randomness of the new energy power generation system;
2. compared with hydrogen, ammonia is easy to liquefy in normal temperature or normal pressure environment, the energy of liquid ammonia in unit volume is higher than that of high-pressure gaseous hydrogen, the volume of a storage tank required for storing ammonia is smaller, and the storage cost of liquid ammonia is 1/3 of that of a high-pressure hydrogen storage tank with the same hydrogen content, so that the size, technical difficulty and cost of a fuel storage device of a power generation system are reduced;
3. the electrochemical synthesis ammonia reactor utilizes the tail gas combustion heat of the ammonia fuel high-temperature solid oxide fuel cell to realize heat cascade utilization, and the whole system has higher efficiency;
4. the system takes ammonia as an energy storage carrier for wind and light power generation, has the advantages of small storage tank volume, capability of storing liquid ammonia under the pressure of 1MPa at normal temperature, low storage cost, long storage time span in quarters and the like, is a polygeneration system for simultaneously outputting electric power, pure oxygen and hot water to the outside, and can meet different requirements of various users.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention. In the drawings:
FIG. 1 is a schematic diagram of an electrothermal oxygen generation and supply system for combined ammonia electrochemical production and storage according to the present invention.
An air separation device 1; an electrochemical synthesis ammonia reactor 2; an oxygen storage tank 3; an energy storage battery 4; a power generation device 5; a liquid ammonia storage tank 6; a first heat exchanger 7; a second heat exchanger 8; a third heat exchanger 9; a fourth heat exchanger 10; an ammonia fuel high temperature solid oxide fuel cell 11; a tail gas burner 12; a flow divider 13.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It should be noted that, in the case of no conflict, embodiments of the present invention and features of the embodiments may be combined with each other, and the described embodiments are only some embodiments of the present invention, not all embodiments.
Referring to the accompanying drawings, the embodiment mode of the electric heating oxygen generation and supply system for combined ammonia electrochemical production and storage comprises an air separation device 1, an electrochemical ammonia synthesis reactor 2, an oxygen storage tank 3, an energy storage battery 4, a power generation device 5, a liquid ammonia storage tank 6, a first heat exchanger 7, a second heat exchanger 8, a third heat exchanger 9, a fourth heat exchanger 10, an ammonia fuel high-temperature solid oxide fuel cell 11 and a tail gas burner 12, wherein the electric power input end of the energy storage battery 4 is connected with the power generation device 5, the output end is respectively connected with the air separation device 1 and the electrochemical ammonia synthesis reactor 2, the oxygen output end of the air separation device 1 is connected with the oxygen storage tank 3, the nitrogen output end is communicated with the cold end inlet of the third heat exchanger 9, the cold end outlet of the third heat exchanger 9 is communicated with the cathode inlet of the electrochemical ammonia synthesis reactor 2, the cold end inlet of the fourth heat exchanger 10 is filled with water, the cold end outlet of the fourth heat exchanger 10 is communicated with the anode inlet of the electrochemical ammonia synthesis reactor 2, the anode outlet of the electrochemical ammonia synthesis reactor 2 is communicated with the oxygen storage tank 3, the cathode outlet ammonia gas is cooled and pressurized and then is conveyed into the liquid ammonia storage tank 6, the outlet end of the liquid ammonia storage tank 6 is communicated with the cold end inlet of the second heat exchanger 8, the cold end outlet of the second heat exchanger 8 is communicated with the cathode inlet of the ammonia fuel high-temperature solid oxide fuel cell 11, the cold end inlet of the first heat exchanger 7 is filled with air, the cold end outlet is communicated with the anode inlet of the ammonia fuel high-temperature solid oxide fuel cell 11, the anode and the cathode outlet of the ammonia fuel high-temperature solid oxide fuel cell 11 are both communicated with the tail gas burner 12, and the output end of the tail gas burner 12 is respectively communicated with the first heat exchanger 7, the hot end inlets of the second heat exchanger 8, the third heat exchanger 9 and the fourth heat exchanger 10 are communicated.
In this embodiment, the power generation device 5 is a wind power generation device or a photovoltaic power generation device.
In this embodiment, the high-temperature solid oxide fuel cell 11 is electrically connected to the energy storage cell 4, so that the high-temperature solid oxide fuel cell 11 can supplement the energy storage cell 4 with electric energy according to the working conditions.
In this embodiment, a diverter 13 is further disposed between the electrochemical ammonia synthesis reactor 2 and the liquid ammonia storage tank 6, an input end of the diverter 13 is communicated with a cathode outlet of the electrochemical ammonia synthesis reactor 2, two output ends of the diverter 13 are respectively communicated with cold end inlets of the liquid ammonia storage tank 6 and the second heat exchanger 8, and the use of the diverter 13 is convenient for adjusting the flow direction of ammonia according to the use condition.
In this embodiment, the heat output of the tail gas burner 12 is output through a main pipeline, the main pipeline is respectively communicated with the first heat exchanger 7, the second heat exchanger 8, the third heat exchanger 9 and the fourth heat exchanger 10 through four branch pipelines, and the heat output by the tail gas burner 12 is supplied to the first heat exchanger 7, the second heat exchanger 8, the third heat exchanger 9 and the fourth heat exchanger 10 again, and whether the heat is supplied is determined according to the actual working conditions of the heat exchangers.
When the electrochemical ammonia synthesis device is used, the power generation device 5 generates power, then the electric energy is stored in the energy storage battery 4, the electric energy of the energy storage battery 4 is supplied to the air separation device 1 and the electrochemical ammonia synthesis reactor 2 for use, the air is separated into nitrogen and oxygen by the air separation device 1, the oxygen is conveyed into the oxygen storage tank 3 for storage, the nitrogen is conveyed into the third heat exchanger 9 for heat exchange, after being added into 400-500 ℃, the nitrogen enters the cathode of the electrochemical ammonia synthesis reactor 2, the water is heated to 400-500 ℃ by the heat exchanger and enters the anode of the electrochemical ammonia synthesis reactor 2, the molar ratio of the nitrogen entering the cathode of the electrochemical ammonia synthesis reactor 2 to the water entering the anode is 1:3, the cathode and anode gases undergo electrocatalytic reaction at 1bar and 500 ℃, and the reaction occurring in the anode is: 3H (3H) 2 O→3/2O 2 +6H + +6e - The reactions taking place in the cathode are: n (N) 2 +6H + +6e - →2NH 3 Oxygen enters the oxygen storage tank 3 for storage, ammonia is split under the action of the splitter 13, and the flow direction of the ammonia is regulated according to the use condition; after the ammonia gas enters the second heat exchanger 8 and is heated to 600-700 ℃, the ammonia gas is input into the cathode of the ammonia fuel high-temperature solid oxide fuel cell 11, after the air is heated to 600-700 ℃ by the first heat exchanger 7, the ammonia gas is input into the anode of the ammonia fuel high-temperature solid oxide fuel cell 11, the cathode and the anode react in the ammonia fuel high-temperature solid oxide fuel cell 11 at the reaction temperature of 700 ℃, and the reaction of the cathode is that: 2NH 3 →N 2 +6H + +6e - The reaction of the anode is: 3/2O 2 +6H++6e-→3H 2 The output products of the O, ammonia fuel high temperature solid oxide fuel cell 11 are hot water and electricity, the gas mixture at the outlets of the cathode and the anode is introduced into the tail gas burner 12 to release chemical energy, and then the heat is transferred to the first heat exchanger 7, the second heat exchanger 8, the third heat exchanger 9 and the fourth heat exchanger 10 for heat exchange.
The diversion of ammonia mainly comprises the following cases: when the electrochemical synthesis ammonia reactor 2 is operated and the ammonia fuel high temperature solid oxide fuel cell 11 is not operated, all the synthesized ammonia gas enters the liquid ammonia storage tank 6, is cooled to 25 ℃ before entering, and is pressurized to 1MPa.
When the electrochemical synthesis ammonia reactor 2 and the ammonia fuel high-temperature solid oxide fuel cell 11 are operated simultaneously, the synthesized ammonia gas is preferentially and directly supplied to the ammonia fuel high-temperature solid oxide fuel cell 11, and the excess ammonia gas is input into the liquid ammonia storage tank 6.
When the electrochemical synthesis ammonia reactor 2 is not in operation and the ammonia fuel high temperature solid oxide fuel cell 11 is in operation, ammonia gas is supplied from the liquid ammonia storage tank 6 to the ammonia fuel high temperature solid oxide fuel cell 11, and the tail gas burner 12 heats only the first heat exchanger 7 and the second heat exchanger 8.
The embodiments of the invention disclosed above are intended only to help illustrate the invention. The examples are not intended to be exhaustive or to limit the invention to the precise forms disclosed. Many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best understand and utilize the invention.
Claims (10)
1. An electrothermal oxygen production and supply system for generating electricity and combining ammonia electrochemical preparation and storage is characterized in that: comprises an air separation device (1), an electrochemical synthesis ammonia reactor (2), an oxygen storage tank (3), an energy storage battery (4), a power generation device (5), a liquid ammonia storage tank (6), a first heat exchanger (7), a second heat exchanger (8), a third heat exchanger (9), a fourth heat exchanger (10), an ammonia fuel high-temperature solid oxide fuel cell (11) and a tail gas combustor (12), wherein the electric power input end of the energy storage battery (4) is connected with the power generation device (5), the output end is respectively connected with the air separation device (1) and the electrochemical synthesis ammonia reactor (2), the oxygen output end of the air separation device (1) is connected with the oxygen storage tank (3), the nitrogen output end is communicated with the cold end inlet of the third heat exchanger (9), the cold end outlet of the third heat exchanger (9) is communicated with the cathode inlet of the electrochemical synthesis ammonia reactor (2), the cold end inlet of the fourth heat exchanger (10) is filled with water, the cold end outlet of the fourth heat exchanger (10) is communicated with the anode inlet of the electrochemical synthesis ammonia reactor (2), the oxygen output end of the electrochemical synthesis ammonia reactor (2) is respectively connected with the cold end inlet of the oxygen storage tank (6) to the cold end of the ammonia storage tank (6), the cold end of the ammonia storage tank (6) is communicated with the cold end of the ammonia storage tank (6), the cold end outlet of the second heat exchanger (8) is communicated with the cathode inlet of the ammonia fuel high-temperature solid oxide fuel cell (11), the cold end inlet of the first heat exchanger (7) is filled with air, the cold end outlet is communicated with the anode inlet of the ammonia fuel high-temperature solid oxide fuel cell (11), the anode and the cathode outlet of the ammonia fuel high-temperature solid oxide fuel cell (11) are communicated with the tail gas burner (12), and the output end of the tail gas burner (12) is respectively communicated with the hot end inlets of the first heat exchanger (7), the second heat exchanger (8), the third heat exchanger (9) and the fourth heat exchanger (10).
2. The electric heating oxygen generation and supply system for combined ammonia electrochemical production and storage according to claim 1, wherein: the power generation device (5) is a wind power generation device or a photovoltaic power generation device.
3. The electric heating oxygen generation and supply system for combined ammonia electrochemical production and storage according to claim 1, wherein: the molar ratio of nitrogen entering the cathode of the electrochemical synthesis ammonia reactor (2) to water entering the anode is 1:3.
4. The electric heating oxygen generation and supply system for combined ammonia electrochemical production and storage according to claim 1, wherein: the nitrogen at the cathode outlet of the electrochemical synthesis ammonia reactor (2) is cooled to 25 ℃ and pressurized to 1MPa before entering the liquid ammonia storage tank (6).
5. The electric heating oxygen generation and supply system for combined ammonia electrochemical production and storage according to claim 1, wherein: the temperature range of the air after being heated by the first heat exchanger (7) is 600-700 ℃.
6. The electric heating oxygen generation and supply system for combined ammonia electrochemical production and storage according to claim 1, wherein: the temperature range of the ammonia gas which is output after being heated by the second heat exchanger (8) is 600-700 ℃.
7. The electric heating oxygen generation and supply system for combined ammonia electrochemical production and storage according to claim 1, wherein: the ammonia fuel high-temperature solid oxide fuel cell (11) is electrically connected with the energy storage cell (4).
8. The electric heating oxygen generation and supply system for combined ammonia electrochemical production and storage according to claim 1, wherein: and a diverter is further arranged between the electrochemical ammonia synthesis reactor (2) and the liquid ammonia storage tank (6), the input end of the diverter is communicated with the cathode outlet of the electrochemical ammonia synthesis reactor (2), and the two output ends of the diverter are respectively communicated with the cold end inlets of the liquid ammonia storage tank (6) and the second heat exchanger (8).
9. The electric heating oxygen generation and supply system for combined ammonia electrochemical production and storage according to claim 8, wherein: the output products of the ammonia fuel high-temperature solid oxide fuel cell (11) are hot water and electricity.
10. The electric heating oxygen generation and supply system for combined ammonia electrochemical production and storage according to claim 1, wherein: the heat output of the tail gas burner (12) is output through a main pipeline, and the main pipeline is communicated with the first heat exchanger (7), the second heat exchanger (8), the third heat exchanger (9) and the fourth heat exchanger (10) through four branch pipelines respectively.
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| US8034499B2 (en) * | 2007-04-05 | 2011-10-11 | Delphi Technologies, Inc. | Energy conversion device including a solid oxide fuel cell fueled by ammonia |
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