WO2022000854A1 - Système de four de chauffage au gaz naturel et procédé appliqué à une pile à combustible à carbonate fondu - Google Patents

Système de four de chauffage au gaz naturel et procédé appliqué à une pile à combustible à carbonate fondu Download PDF

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Publication number
WO2022000854A1
WO2022000854A1 PCT/CN2020/121310 CN2020121310W WO2022000854A1 WO 2022000854 A1 WO2022000854 A1 WO 2022000854A1 CN 2020121310 W CN2020121310 W CN 2020121310W WO 2022000854 A1 WO2022000854 A1 WO 2022000854A1
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Prior art keywords
fuel cell
natural gas
gas
inlet
heating furnace
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Application number
PCT/CN2020/121310
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English (en)
Chinese (zh)
Inventor
卢成壮
张瑞云
程健
李�昊
王保民
杨冠军
黄华
Original Assignee
中国华能集团清洁能源技术研究院有限公司
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Publication of WO2022000854A1 publication Critical patent/WO2022000854A1/fr

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/12—Radiant burners
    • F23D14/18—Radiant burners using catalysis for flameless combustion
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/46—Details, e.g. noise reduction means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/46—Details, e.g. noise reduction means
    • F23D14/66—Preheating the combustion air or gas
    • 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
    • H01M8/04022—Heating by combustion
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/06—Combination of fuel cells with means for production of reactants or for treatment of residues
    • H01M8/0662—Treatment of gaseous reactants or gaseous residues, e.g. cleaning
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/14—Fuel cells with fused electrolytes
    • 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
    • H01M8/14—Fuel cells with fused electrolytes
    • H01M2008/147—Fuel cells with molten carbonates
    • 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
    • Y02E20/00—Combustion technologies with mitigation potential
    • Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
    • 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

Definitions

  • the invention relates to the technical field of hydrogen energy and fuel cell power generation, in particular to a natural gas heating furnace system and method applied to a molten carbonate fuel cell.
  • Molten carbonate fuel cell is a high-temperature fuel cell power generation device, which has a wide range of fuel sources, high energy conversion efficiency, and can capture carbon dioxide. Molten carbonate fuel cell power generation technology can design and develop cogeneration power generation systems for different occasions.
  • the heating of the fuel cell In the current domestic power generation system, the heating of the fuel cell generally adopts electric heating and natural gas heating, and the heating system and the stack operation system are independent of each other and cannot achieve coupling.
  • the purpose of the present invention is to provide a natural gas heating furnace system and method applied to a molten carbonate fuel cell. Since the heating system and the stack operation system are independent of each other, coupling cannot be achieved, and there is a defect of low utilization rate of energy.
  • the invention provides a natural gas heating furnace system applied to molten carbonate fuel cells, comprising a natural gas intake unit, a fuel cell system, a natural gas heating furnace system, a catalytic burner and a fire tube, wherein the gas outlet of the natural gas intake unit It is divided into two paths, one is mixed with water and connected to the air inlet of the heat exchange unit; the high temperature gas outlet of the heat exchange unit is connected to the anode inlet of the fuel cell system; the anode tail gas outlet of the fuel cell system is connected to the catalytic burner.
  • the catalytic burner is provided with an air inlet;
  • the gas outlet of the catalytic burner is connected to the cathode inlet of the fuel cell system;
  • the cathode outlet of the fuel cell system is connected to the gas inlet of the heat exchange unit;
  • the other gas outlet of the natural gas air inlet unit connects the air inlet of the heat exchange unit;
  • the high temperature gas outlet of the heat exchange unit connects the gas inlet of the fire barrel;
  • the fire barrel is provided with an air inlet;
  • the gas outlet of the fire tube is connected to the natural gas inlet of the natural gas heating furnace system.
  • the heat exchange unit includes a first heat exchanger and a second heat exchanger, wherein the outlet of the natural gas and water mixing unit is connected to the gas inlet of the first heat exchanger, and the first heat exchanger
  • the high temperature gas outlet is connected to the anode inlet of the fuel cell system
  • the other gas outlet of the natural gas inlet unit is connected to the gas inlet of the second heat exchanger
  • the high temperature gas outlet of the second heat exchanger is connected to the gas inlet of the fire tube
  • the medium outlet of the first heat exchanger is connected to the medium inlet of the second heat exchanger.
  • the low temperature gas outlet of the second heat exchanger is connected to an exhaust gas exhaust pipe.
  • the power output end of the fuel cell system is connected to an external device.
  • both the air inlet provided on the catalytic burner and the air inlet provided on the torch are connected to the air unit.
  • the exhaust gas outlet of the natural gas heating furnace system is connected to the gas inlet of the catalytic burner.
  • a natural gas heating method applied to a molten carbonate fuel cell based on the described natural gas heating furnace system applied to a molten carbonate fuel cell, comprising the following steps:
  • the natural gas in the natural gas intake unit After a part of the natural gas in the natural gas intake unit is mixed with water, it enters the heat exchange unit for heat exchange.
  • the gas after heat exchange is connected to the anode intake of the fuel cell system.
  • the internal reforming reaction of natural gas occurs inside the anode first.
  • the reacted hydrogen-rich gas participates in the anode reaction of the fuel cell system;
  • the gases and air that do not participate in the reaction in the anode tail gas of the fuel cell system enter the cathode of the fuel cell system after catalytic combustion in the catalytic burner.
  • the gas mainly It is air and carbon dioxide, air and carbon dioxide participate in the cathode reaction of the fuel cell system, and the tail gas after the reaction exchanges heat with the natural gas in the heat exchange unit;
  • the remaining part of the natural gas enters the heat exchange unit for heat exchange.
  • the heated gas is mixed with air and enters the fire tube to be ignited. After ignition, the gas enters the air inlet on the natural gas heating furnace system to exchange heat with the heat carrier medium to realize the fuel cell. Heating function of the stack.
  • the unreacted natural gas in the natural gas heating furnace system enters the catalytic burner, and the carbon dioxide generated in the catalytic combustion and heating process enters the cathode air inlet of the fuel cell system to realize the recycling of carbon dioxide.
  • the invention provides a natural gas heating furnace system and method applied to a molten carbonate fuel cell, which adopts a fuel cell and a natural gas heating furnace system, and natural gas is used as the gas source of the fuel cell and the heating furnace at the same time.
  • Heating the structure couples the fuel cell system and the fuel cell heating system, that is, the natural gas heating furnace system, to further improve the comprehensive energy utilization efficiency.
  • the carbon dioxide from the tail gas of the natural gas heating furnace can be used as the source of the cathode gas of the fuel cell, so as to achieve the recycling of carbon dioxide, reduce the carbon emission, and realize the comprehensive utilization of energy.
  • FIG. 1 is a schematic diagram of the system structure involved in the present invention.
  • a natural gas heating furnace system applied to molten carbonate fuel cells includes a natural gas intake unit 1, a first heat exchanger 2, a second heat exchanger 3, and a fuel cell system 4 and the natural gas heating furnace system 5, wherein the gas outlet of the natural gas inlet unit 1 is divided into two paths, and one path is mixed with water and then connected to the air inlet of the first heat exchanger 2; the high temperature of the first heat exchanger 2
  • the gas outlet is connected to the anode inlet of the fuel cell system 4; the anode tail gas outlet of the fuel cell system 4 is connected to the gas inlet of the catalytic burner 6; the catalytic burner 6 is provided with an air inlet; the gas of the catalytic burner 6
  • the outlet is connected to the cathode inlet of the fuel cell system 4 ; the cathode outlet of the fuel cell system 4 is connected to the gas inlet of the first heat exchanger 2 .
  • the other gas outlet of the natural gas inlet unit 1 is connected to the air inlet of the second heat exchanger 3; the high temperature gas outlet of the second heat exchanger 3 is connected to the gas inlet of the fire tube 7; the fire tube 7 is provided with an air inlet .
  • the gas outlet of the fire tube 7 is connected to the natural gas inlet of the natural gas heating furnace system 5 .
  • the exhaust gas outlet of the natural gas heating furnace system 5 is connected to the gas inlet of the catalytic burner 6 .
  • the low temperature gas outlet of the first heat exchanger 2 is connected to the gas inlet of the second heat exchanger 3 .
  • the low temperature gas outlet of the second heat exchanger 3 is connected to the exhaust gas exhaust pipe.
  • the power output end of the fuel cell system 4 is connected to an external device.
  • the fuel cell system 4 is placed in the natural gas heating furnace system 5; the stack is heated by natural gas.
  • the fuel cell system 4 is a natural gas internal reforming fuel cell.
  • the working principle of the present invention is:
  • the natural gas intake unit 1 is connected to the fuel cell system 4 and the natural gas heating furnace system 5 respectively. First, after the natural gas is mixed with water, it is connected to the first heat exchanger 2, and the heat-exchanged gas is connected to the anode of the fuel cell system 4. The air inlets are connected to each other. At this time, the internal reforming reaction of natural gas occurs first in the anode, and the reforming reaction is:
  • the hydrogen-rich gas after the reaction participates in the anode reaction of the fuel cell; the anode tail gas of the fuel cell system 4 is connected to the catalytic burner 6, the air unit 8 is connected to the catalytic burner 6, and the gas that does not participate in the reaction in the tail gas undergoes catalytic combustion. It is connected to the cathode air inlet of the fuel cell system 4.
  • the gases are mainly air and carbon dioxide, and the air and carbon dioxide participate in the cathode reaction of the fuel cell system 4, and the tail gas after the reaction is carried out with the natural gas in the first heat exchanger 2. heat exchange.
  • the remaining part of the natural gas enters the second heat exchanger 3 to be connected, the heated gas and air are mixed into the fire tube 7 to be ignited, and after the ignition, the gas enters the air inlet on the natural gas heating furnace system 5, and the internal pipeline of the natural gas heating furnace system 5
  • the heating and the heat transfer medium exchange heat to realize the heating function of the fuel cell stack.
  • the natural gas heating furnace system 5 is connected to the catalytic burner 6, and the unreacted natural gas enters the fuel cell system 4 through catalytic combustion and carbon dioxide generated during the heating process. Cathode inlet, realize the recycling of carbon dioxide.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Fuel Cell (AREA)

Abstract

La présente invention concerne un système de four de chauffage au gaz naturel appliqué à une pile à combustible à carbonate fondu. Le système de four de chauffage au gaz naturel comprend une unité d'admission de gaz naturel (1), un système de pile à combustible (4), un système de four de chauffage au gaz naturel (5), un brûleur catalytique (6) et un cylindre d'incendie (7). Selon la pile à combustible et le système de four de chauffage au gaz naturel, le gaz naturel sert de source de gaz pour la pile à combustible et pour un four de chauffage en même temps, de telle sorte qu'aucune source d'énergie externe n'est nécessaire pour chauffer la pile à combustible. Le système est appliqué à un procédé de chauffage au gaz naturel pour une pile à combustible à carbonate fondu.
PCT/CN2020/121310 2020-06-29 2020-10-15 Système de four de chauffage au gaz naturel et procédé appliqué à une pile à combustible à carbonate fondu WO2022000854A1 (fr)

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Application Number Priority Date Filing Date Title
CN202010604903.6A CN111649328A (zh) 2020-06-29 2020-06-29 一种应用于熔融碳酸盐燃料电池的天然气加热炉系统和方法
CN202010604903.6 2020-06-29

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Cited By (1)

* Cited by examiner, † Cited by third party
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CN115172801A (zh) * 2022-07-21 2022-10-11 西安交通大学 固体氧化物燃料电池与光热利用一体化系统及方法

Families Citing this family (1)

* Cited by examiner, † Cited by third party
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CN111649328A (zh) * 2020-06-29 2020-09-11 中国华能集团清洁能源技术研究院有限公司 一种应用于熔融碳酸盐燃料电池的天然气加热炉系统和方法

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CN109361001A (zh) * 2018-09-04 2019-02-19 新地能源工程技术有限公司 一种整体煤气化固体氧化物燃料电池发电系统及工艺
CN111649328A (zh) * 2020-06-29 2020-09-11 中国华能集团清洁能源技术研究院有限公司 一种应用于熔融碳酸盐燃料电池的天然气加热炉系统和方法
CN212298989U (zh) * 2020-06-29 2021-01-05 中国华能集团清洁能源技术研究院有限公司 一种应用于熔融碳酸盐燃料电池的天然气加热炉系统

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Publication number Priority date Publication date Assignee Title
US20160248110A1 (en) * 2015-02-25 2016-08-25 Fuelcell Energy Inc. Power producing gas separation system and method
CN106299410A (zh) * 2016-09-29 2017-01-04 江苏科技大学 一种利用残余燃料自加热的固体氧化物燃料电池发电系统
CN207542331U (zh) * 2017-10-25 2018-06-26 中国华能集团清洁能源技术研究院有限公司 一种串联式熔融碳酸盐燃料电池发电系统
CN109361001A (zh) * 2018-09-04 2019-02-19 新地能源工程技术有限公司 一种整体煤气化固体氧化物燃料电池发电系统及工艺
CN111649328A (zh) * 2020-06-29 2020-09-11 中国华能集团清洁能源技术研究院有限公司 一种应用于熔融碳酸盐燃料电池的天然气加热炉系统和方法
CN212298989U (zh) * 2020-06-29 2021-01-05 中国华能集团清洁能源技术研究院有限公司 一种应用于熔融碳酸盐燃料电池的天然气加热炉系统

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115172801A (zh) * 2022-07-21 2022-10-11 西安交通大学 固体氧化物燃料电池与光热利用一体化系统及方法
CN115172801B (zh) * 2022-07-21 2024-03-12 西安交通大学 固体氧化物燃料电池与光热利用一体化系统及方法

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