CN114976168A - Electricity generation and ammonia electrochemistry combined electric heating oxygen generation and supply system for storage - Google Patents
Electricity generation and ammonia electrochemistry combined electric heating oxygen generation and supply system for storage Download PDFInfo
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- CN114976168A CN114976168A CN202210598548.5A CN202210598548A CN114976168A CN 114976168 A CN114976168 A CN 114976168A CN 202210598548 A CN202210598548 A CN 202210598548A CN 114976168 A CN114976168 A CN 114976168A
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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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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- 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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- 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
- H01M8/04—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
- H01M8/04014—Heat exchange using gaseous fluids; Heat exchange by combustion of reactants
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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
- H01M8/04—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
- 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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- 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
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04082—Arrangements for control of reactant parameters, e.g. pressure or concentration
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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
- H01M8/06—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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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/06—Combination of fuel cells with means for production of reactants or for treatment of residues
- H01M8/0662—Treatment of gaseous reactants or gaseous residues, e.g. cleaning
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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
- H01M8/124—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
- H01M8/1246—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 the electrolyte consisting of oxides
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E70/00—Other energy conversion or management systems reducing GHG emissions
- Y02E70/30—Systems combining energy storage with energy generation of non-fossil origin
Abstract
The invention relates to the field of fuel cell distributed power generation, in particular to an electric heating oxygen generation and supply system for power generation and ammonia electrochemistry storage, which solves the problem that a large number 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 combustor, wherein the anode and cathode outlets of the ammonia fuel high-temperature solid oxide fuel cell are communicated with the tail gas combustor, and the output end of the tail gas combustor is respectively communicated with hot end inlets of the first heat exchanger, the second heat exchanger, the third heat exchanger and the fourth heat exchanger. The fluctuation and randomness of the new energy power generation system are eliminated.
Description
Technical Field
The invention belongs to the field of fuel cell distributed power generation, and particularly relates to an electric heating oxygen generation and supply system for power generation and ammonia electrochemistry storage.
Background
Under the background that the greenhouse effect is becoming more and more serious, the trend of carbon reduction becomes an unblocked climax; in the carbon emission industry of China, energy is the first time, and the most important department in the energy industry is power generation; under the condition, the new energy industry is not popular naturally, and the photovoltaic and wind power industry is developed rapidly under the strong support of domestic policies;
however, photovoltaic and wind power generation devices have the characteristics of fluctuation, randomness and the like in the aspect of power generation, so that in order to be suitable for a distributed power generation technology and ensure that the distributed power generation technology can realize stable power supply, an energy storage device is arranged in a general power generation system;
common energy storage devices include electrochemical energy storage, compressed air energy storage, flywheel energy storage, superconducting energy storage, pumped water energy storage, flywheel energy storage, hydrogen production energy storage and the like; 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 time length are limited; the compressed air energy storage and water pumping energy storage has the characteristics of high density and long energy storage time, but is generally suitable for high-power application scenes of more than 10MW, and the energy storage cost is high; 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 time and high charging and discharging speed, so the electrochemical energy storage is widely applied, but potential hazards exist in the aspect of safety all the time;
the hydrogen production and energy storage is to use the electric power generated by the new energy to electrolyze water to prepare hydrogen, store the hydrogen in a high-pressure gas tank, and then introduce the hydrogen into a hydrogen fuel cell to generate electricity, thereby eliminating the fluctuation of the new energy electricity generation; the technical means has the advantages of mature technology and high system safety and reliability, so the technical means is approved in the distributed power generation technology; however, the hydrogen energy density and the power density are low, and in order to store enough energy, a large amount of investment cost is needed to construct a hydrogen storage high-pressure tank;
therefore, designing a power generation system capable of avoiding a large amount of hydrogen storage has become an urgent problem to be solved.
Ammonia is considered as a 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, the ammonia has the advantages of high energy storage density, long energy storage period, convenience for long-distance transportation, capability of realizing poly-generation of oxygen, hydrogen and electric power and the like. The ammonia can be stored in the form of liquid ammonia under the condition of normal pressure to 33 ℃ or normal temperature of 1MPa, and the storage cost of the liquid ammonia is 1/3 of the high-pressure hydrogen storage technology with the same hydrogen content.
Disclosure of Invention
In view of the above, the present invention is directed to a system for generating and supplying electrical oxygen for combined power generation and ammonia electrochemical storage to solve the problem that a distributed power generation system requires a large amount of high-pressure hydrogen storage tanks.
In order to achieve the purpose, the invention adopts the following technical scheme: an electric heating oxygen generation and supply system for power generation and ammonia electrochemical storage comprises an air separation device, an electrochemical ammonia synthesis 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 combustor, wherein the power input end of the energy storage battery is connected with the power generation device, the output end of the energy storage battery is respectively connected with the air separation device and the electrochemical ammonia synthesis reactor, the oxygen output end of the air separation device is connected with the oxygen storage tank, the nitrogen output end of the energy storage battery is communicated with the cold end inlet of the third heat exchanger, the cold end outlet of the third heat exchanger is communicated with the cathode inlet of the electrochemical ammonia synthesis reactor, the cold end inlet of the fourth heat exchanger is communicated with water, and the cold end outlet of the fourth heat exchanger is communicated with the anode inlet of the electrochemical ammonia synthesis reactor, an anode outlet of the electrochemical synthesis ammonia reactor is communicated with an oxygen storage tank, ammonia gas at a cathode outlet is cooled and pressurized and then conveyed into a liquid ammonia storage tank, an outlet end of the liquid ammonia storage tank is communicated with a cold end inlet of a second heat exchanger, a cold end outlet of the second heat exchanger is communicated with a cathode inlet of the ammonia fuel high-temperature solid oxide fuel cell, air is introduced into a cold end inlet of the first heat exchanger, a cold end outlet is communicated with an anode inlet of the ammonia fuel high-temperature solid oxide fuel cell, an anode outlet and a cathode outlet of the ammonia fuel high-temperature solid oxide fuel cell are both communicated with a tail gas combustor, and an output end of the tail gas combustor is respectively communicated with hot end inlets of the first heat exchanger, the second heat exchanger, the third heat exchanger and the fourth heat exchanger.
Furthermore, the power generation device is a wind power generation device or a photovoltaic power generation device.
Furthermore, the molar ratio of the nitrogen entering the cathode of the electrochemical ammonia synthesis reactor to the water entering the anode is 1: 3.
Furthermore, the nitrogen at the outlet of the cathode of the electrochemical ammonia synthesis reactor is cooled to 25 ℃ and pressurized to 1MPa before entering the liquid ammonia storage tank.
Furthermore, the temperature range of the air output after being heated by the first heat exchanger is 600-700 ℃.
Furthermore, the temperature range of the ammonia gas heated by the second heat exchanger and then output is 600-700 ℃.
Furthermore, the ammonia fuel high-temperature solid oxide fuel cell is electrically connected with the energy storage cell.
Furthermore, a diverter is arranged between the electrochemical synthetic ammonia reactor and the liquid ammonia storage tank, the input end of the diverter is communicated with the cathode outlet of the electrochemical synthetic ammonia reactor, and two output ends of the diverter are respectively communicated with the cold-end inlets of the liquid ammonia storage tank and the second heat exchanger.
Furthermore, 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 combustor 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 does not participate in carbon elements, zero emission of CO2 can be realized, and meanwhile, ammonia is used as a carrier of hydrogen to store energy, so that the volatility and randomness of the new energy power generation system can be eliminated;
2. compared with hydrogen, ammonia is easy to liquefy under normal temperature or normal pressure environment, the energy of liquid ammonia per unit volume is higher than that of high-pressure gaseous hydrogen, the volume of a storage tank required by ammonia storage is smaller, and the storage cost of liquid ammonia is 1/3 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, realizes the gradient utilization of heat, and has higher efficiency of the whole system;
4. the system uses 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 normal temperature and 1MPa, low storage cost, long storage time, capability of spanning seasons and the like, is a poly-generation system for outputting electric power, pure oxygen and hot water simultaneously, and can meet different requirements of various users.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic diagram of an electric oxygen generation and supply system for power generation combined with ammonia electrochemical storage according to the present invention.
An air separation unit 1; a reactor 2 for electrochemically synthesizing ammonia; 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 solution in the embodiments of the present invention will be clearly and completely explained below with reference to the drawings in the embodiments of the present invention. It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict, and the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments.
Referring to the attached drawings for explaining the embodiment, the electric heating oxygen generation and supply system for power generation and ammonia electrochemical storage 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 power input end of the energy storage battery 4 is connected with the power generation device 5, the output ends of the energy storage battery 4 are 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 communicated with water, the outlet of the cold end of the fourth heat exchanger 10 is communicated with the inlet of the anode of the reactor 2 for electrochemically synthesizing ammonia, the anode outlet of the electrochemical ammonia synthesis reactor 2 is communicated with the oxygen storage tank 3, the ammonia gas at the cathode outlet 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, air is introduced into the cold end inlet of the first heat exchanger 7, the cold end outlet is communicated with the anode inlet of the ammonia fuel high-temperature solid oxide fuel cell 11, the outlets of the anode and the cathode of the ammonia fuel high-temperature solid oxide fuel cell 11 are both communicated with a tail gas burner 12, and the output end of the tail gas combustor 12 is respectively communicated with 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.
In the present embodiment, the power generation device 5 is a wind power generation device or a photovoltaic power generation device.
In this embodiment, the ammonia fuel high-temperature solid oxide fuel cell 11 is electrically connected to the energy storage cell 4, and the ammonia fuel high-temperature solid oxide fuel cell 11 can supplement electric energy to the energy storage cell 4 according to the working condition.
In this embodiment, still be equipped with shunt 13 between electrochemistry synthetic ammonia reactor 2 and liquid ammonia storage tank 6, the input and the electrochemistry synthetic ammonia reactor 2 cathode outlet intercommunication of shunt 13, two output of shunt 13 communicate with the cold junction entry of liquid ammonia storage tank 6 and second heat exchanger 8 respectively, the flow direction of ammonia is convenient for adjust according to the use condition to the use of shunt 13.
In this embodiment, the heat output of the tail gas combustor 12 is output through a main pipeline, 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, the heat output by the tail gas combustor 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 in use, the power generation device 5 generates power, then stores the power in the energy storage battery 4, the power of the energy storage battery 4 is supplied to the air separation device 1 and the electrochemical ammonia synthesis reactor 2 for use, the power is supplied to the air separation device 1 to separate air into nitrogen and oxygen, the oxygen is conveyed to the oxygen storage tank 3 for storage, the nitrogen is conveyed to the third heat exchanger 9 for heat exchange and is added to 400-plus-500 ℃, entering the cathode of an electrochemical ammonia synthesis reactor 2, heating water to 400-plus-500 ℃ by a heat exchanger, entering the anode of the electrochemical ammonia synthesis reactor 2, wherein the molar ratio of nitrogen entering the cathode of the electrochemical ammonia synthesis reactor 2 to water entering the anode is 1:3, carrying out electrocatalytic reaction on cathode and anode gases at 1bar and 500 ℃ in the electrochemical ammonia synthesis reactor 2, and carrying out the following reactions in the anode: 3H 2 O→3/2O 2 +6H + +6e - The reactions occurring in the cathode are: n is a radical of 2 +6H + +6e - →2NH 3 Oxygen enters the oxygen storage tank 3 to be stored, ammonia is shunted under the action of the shunt 13, and the flow direction of the ammonia is adjusted according to the use working condition; the ammonia enters the second heat exchanger 8 and is heated to 600-700 ℃, then the ammonia is input into the cathode of the ammonia fuel high-temperature solid oxide fuel cell 11, the air is heated to 600-700 ℃ by the first heat exchanger 7 and 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 as follows: 2NH 3 →N 2 +6H + +6e - The reaction at the anode is: 3/2O 2 +6H++6e-→3H 2 O, the output products of the ammonia fuel high-temperature solid oxide fuel cell 11 are hot water and electricity, gas at the outlet of the cathode and the gas at the outlet of the anode are mixed and introduced into a tail gas combustor 12 to release chemical energy, and then the heat is transferred to a first heat exchanger 7, a second heat exchanger 8, a third heat exchanger 9 and a fourth heat exchanger 10 for heat exchange.
The ammonia gas split mainly comprises the following conditions: when the electrochemical synthetic ammonia reactor 2 works and the ammonia fuel high-temperature solid oxide fuel cell 11 does not work, the synthetic ammonia gas completely enters the liquid ammonia storage tank 6, is cooled to 25 ℃ before entering, and is pressurized to 1 MPa.
When the reactor 2 for electrochemically synthesizing ammonia and the ammonia-fueled high-temperature solid oxide fuel cell 11 are simultaneously operated, the synthesized ammonia gas is preferentially supplied directly to the ammonia-fueled high-temperature solid oxide fuel cell 11, and the excess ammonia gas is fed to the liquid ammonia storage tank 6.
When the electrochemical synthesis ammonia reactor 2 does not work and the ammonia fuel high-temperature solid oxide fuel cell 11 works, ammonia gas is supplied to the ammonia fuel high-temperature solid oxide fuel cell 11 from the liquid ammonia storage tank 6, and the tail gas combustor 12 only heats the first heat exchanger 7 and the second heat exchanger 8.
The embodiments of the invention disclosed above are intended to be merely illustrative. 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 utilize the invention.
Claims (10)
1. The utility model provides an electricity generation is united ammonia electrochemistry system and is stored up electric heat oxygen generation and supply system of usefulness which characterized in that: comprises an air separation device (1), an electrochemical synthetic 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 power input end of the energy storage battery (4) is connected with the power generation device (5), the output end of the energy storage battery is respectively connected with the air separation device (1) and the electrochemical synthetic 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 synthetic ammonia reactor (2), the cold end inlet of the fourth heat exchanger (10) is communicated 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 anode outlet of the electrochemical synthesis ammonia reactor (2) is communicated with the oxygen storage tank (3), ammonia gas at the cathode outlet 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), air is introduced into the cold end inlet of the first heat exchanger (7), the cold end outlet is communicated with the anode inlet of the ammonia fuel high-temperature solid oxide fuel cell (11), and the anode and cathode outlets of the ammonia fuel high-temperature solid oxide fuel cell (11) are both communicated with the tail gas combustor (12), and the output end of the tail gas combustor (12) is respectively communicated with 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 system of claim 1, wherein the system comprises: the power generation device (5) is a wind power generation device or a photovoltaic power generation device.
3. The system of claim 1, wherein the system comprises: the molar ratio of nitrogen entering the cathode of the electrochemical ammonia synthesis reactor (2) to water entering the anode is 1: 3.
4. The system of claim 1, wherein the system comprises: the nitrogen at the cathode outlet of the electrochemical ammonia synthesis reactor (2) is cooled to 25 ℃ and pressurized to 1MPa before entering a liquid ammonia storage tank (6).
5. The system of claim 1, wherein the system comprises: the temperature range of the air output after being heated by the first heat exchanger (7) is 600-700 ℃.
6. The system of claim 1, wherein the system comprises: the temperature range of the ammonia gas output after being heated by the second heat exchanger (8) is 600-700 ℃.
7. The system of claim 1, wherein the system comprises: the ammonia fuel high-temperature solid oxide fuel cell (11) is electrically connected with the energy storage cell (4).
8. The system of claim 1, wherein the system comprises: still be equipped with the shunt between electrochemistry synthetic ammonia reactor (2) and liquid ammonia storage tank (6), the input and electrochemistry synthetic ammonia reactor (2) cathode outlet intercommunication of shunt, two outputs of shunt communicate with the cold junction entry of liquid ammonia storage tank (6) and second heat exchanger (8) respectively.
9. The system of claim 8, wherein the system comprises: the output products of the ammonia fuel high-temperature solid oxide fuel cell (11) are hot water and electricity.
10. The system of claim 1, wherein the system comprises: the heat output of the tail gas combustor (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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| CN202210598548.5A CN114976168B (en) | 2022-05-30 | 2022-05-30 | Electric heating oxygen production and supply system for power generation and ammonia electrochemical combined production and storage |
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| CN202210598548.5A CN114976168B (en) | 2022-05-30 | 2022-05-30 | Electric heating oxygen production and supply system for power generation and ammonia electrochemical combined production and storage |
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| CN114976168B CN114976168B (en) | 2023-07-07 |
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| 任东;陈芳;杨艳;罗敏;: "微浓度过氧化氢的快速分光光度法检测", 现代化工, no. 12 * |
| 王红娟;屠珊;杜洋;鲁敬妮;: "联合进汽阀内部流场三维数值模拟及阀碟受力分析", 西安交通大学学报, no. 12 * |
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