CN210092233U - Molten carbonate fuel cell and calcium circulation integrated system - Google Patents
Molten carbonate fuel cell and calcium circulation integrated system Download PDFInfo
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- CN210092233U CN210092233U CN201921127306.8U CN201921127306U CN210092233U CN 210092233 U CN210092233 U CN 210092233U CN 201921127306 U CN201921127306 U CN 201921127306U CN 210092233 U CN210092233 U CN 210092233U
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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
Abstract
The utility model discloses a molten carbonate fuel cell and calcium circulation integrated system, which comprises a synthesis gas unit, a raw material unit, a first raw material preheating unit, a carbonation reaction unit, a first gas-solid separator, a second raw material preheating unit, a calciner reactor, a second gas-solid separator and a fuel cell; the output ports of the synthesis gas unit and the raw material unit are connected with the inlet of the first raw material preheating unit; the outlet of the first raw material preheating unit is connected with the inlet of the carbonation reaction unit; the outlet of the carbonation reaction unit is connected with the inlet of the first gas-solid separator, and the gas outlet of the first gas-solid separator is communicated with the anode of the fuel cell; the outlet of the methane unit, the outlet of the air unit and the solid outlet of the first gas-solid separator are connected with the inlet of the second raw material preheating unit, the second raw material preheating unit is connected with the inlet of the second gas-solid separator through the calciner reactor, and the gas outlet of the second gas-solid separator is communicated with the cathode of the fuel cell. The utility model discloses a comprehensive utilization of the energy.
Description
Technical Field
The utility model belongs to the technical field of fuel cell, in particular to molten carbonate fuel cell and calcium circulation integrated system and method.
Background
With the increase of the cost of petroleum and coal energy in the coming years, the pollution caused by fossil energy is more serious, and the pollution is taken as a clean and efficient power generation technology: the Molten Carbonate Fuel Cell (MCFC) can convert chemical energy into electric energy, has the advantages of no use of noble metal catalysts, wide fuel sources and the like, and can form a circulating power generation system together with steam turbine equipment and the like, so that the application prospect of the MCFC is better.
The application of the calcium circulation method in the coal-fired power plant is mainly a combustion process and a gasification process, and the carbon dioxide is captured through the cyclic calcination/carbonation reaction of the calcium-based absorbent, which is one of the methods for capturing the carbon dioxide in a large scale of the coal-fired power plant. The technology for directly capturing carbon dioxide by utilizing the processes of circulating calcination of the calcium-based absorbent and combustion of the pressurized fluidized bed is relatively mature, but the power generation efficiency is low.
In the prior art, the molten carbonate fuel cell and the calcium circulation method are both used independently, so that the primary energy consumption is high and the energy utilization rate is low.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a melting carbonate fuel cell and calcium circulation integrated system to solve above-mentioned technical problem.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a molten carbonate fuel cell and calcium looping integrated system, comprising: the system comprises a synthesis gas unit, a raw material unit, a first raw material preheating unit, a carbonation reaction unit, a first gas-solid separator, a second raw material preheating unit, a calciner reactor, a second gas-solid separator and a fuel cell;
the output ports of the synthesis gas unit and the raw material unit are connected with the inlet of the first raw material preheating unit; the outlet of the first raw material preheating unit is connected with the inlet of the carbonation reaction unit; the outlet of the carbonation reaction unit is connected with the inlet of the first gas-solid separator, and the gas outlet of the first gas-solid separator is communicated with the anode of the fuel cell;
the outlet of the methane unit, the outlet of the air unit and the solid outlet of the first gas-solid separator are connected with the inlet of the second raw material preheating unit, the second raw material preheating unit is connected with the inlet of the second gas-solid separator through the calciner reactor, and the gas outlet of the second gas-solid separator is communicated with the cathode of the fuel cell.
Further, a solid outlet of the second gas-solid separator is connected with the regenerated adsorbent generating unit.
Further, the outlet of the regenerated adsorbent generating unit is connected with the raw material unit.
Further, the system also comprises a first regenerator and a second regenerator;
the gas outlet of the first gas-solid separator is communicated with the anode of the molten carbonate fuel cell through a first heat regenerator;
and the gas outlet of the second gas-solid separator is communicated with the cathode of the salt fuel cell through a second regenerator.
Further, the first gas-solid separator is connected with the hot material flow side unit of the first heat regenerator; the second gas-solid separation is connected with a hot material flow side unit of a second heat regenerator; the first regenerator cold material flow outlet is connected with the anode inlet of the fuel cell; the second regenerator cold stream outlet is connected to the cathode inlet of the fuel cell.
Further, the fuel cell is a molten carbonate fuel cell.
And the solid outlet of the second gas-solid separator is connected with the raw material unit through the regenerated adsorbent generating unit.
Furthermore, the first raw material preheating unit and the second raw material preheating unit adopt combustion chambers; the carbonation reaction unit adopts a fluidized bed reactor.
Further, the carbonation reaction temperature in the carbonation reaction unit is 800 ℃, and the calcination temperature in the calciner reactor is 850-.
Compared with the prior art, the utility model discloses a following technical scheme:
by adopting the integration of the fuel cell and the calcium circulating system, the calcium circulating system can produce decarbonized energy from coal as primary energy, and the molten carbonate fuel cell system can realize the capture and storage of high-concentration carbon dioxide, thereby being beneficial to slowing down the climate change and avoiding the loss of the generating efficiency of a power plant and the increase of the primary energy consumption.
Molten carbonate fuel cells, in combination with calcium recycling, are capable of producing high concentrations of carbon dioxide and producing decarbonized energy from coal as a primary energy source. The calcium cycle uses calcium oxide as a solid sorbent to decarbonize the raw syngas, and the clean syngas effluent is used as anode fuel for molten carbonate fuel cells. Carbon dioxide produced by the regenerative combustion of the solid sorbent can be provided to the cathode of the molten carbonate fuel cell.
A molten carbonate fuel cell and calcium circulation integrated system comprises a fuel cell system and a calcium circulation system device, wherein the inlets of the fuel cell system and the calcium circulation system device are made of synthesis gas and quicklime, hydrogen required by the anode of the fuel cell is separated by using carbonation reaction, the generated products such as calcium carbonate enter a calcination reactor, methane and air are added to heat the products to the calcination temperature, oxygen, carbon dioxide and nitrogen required by the cathode of the fuel cell are generated and separated by the calcination reaction, so that the fuel cell generates electricity, and the quicklime participates in the cycle of the carbonation reaction and the calcination reaction; the utility model discloses a comprehensive utilization of the energy.
Drawings
The accompanying drawings, which form a part of the present application, 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 and not to limit the invention. In the drawings:
fig. 1 is a schematic structural diagram of a molten carbonate fuel cell and calcium circulation integrated system according to the present invention.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.
The following detailed description is exemplary in nature and is intended to provide further details of the invention. Unless otherwise defined, all technical terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the invention.
Referring to fig. 1, the present invention provides a structure of an integrated system of molten carbonate fuel cell and calcium circulation, including: a syngas unit 1, a feedstock unit 2, a first feedstock preheating unit 3, a carbonation reaction unit 4, a first gas-solid separator 5, a second feedstock preheating unit 10, a calciner reactor 11, a second gas-solid separator 12, a regenerative sorbent generation unit 13, a first regenerator 6, a second regenerator 14, and a molten carbonate fuel cell 15.
The output ports of the synthesis gas unit 1 and the raw material unit 2 are connected with the inlet of the first raw material preheating unit 3; the outlet of the first raw material preheating unit 3 is connected with the inlet of the carbonation reaction unit 4; the outlet of the carbonation reaction unit 4 is connected with the inlet of the first gas-solid separator 5, and the gas outlet of the first gas-solid separator 5 is communicated with the anode of the molten carbonate fuel cell through the first regenerator 6.
The outlet of the methane unit 8, the outlet of the air unit 9 and the solid outlet of the first gas-solid separator 5 are connected with the inlet of a second raw material preheating unit 10, the second raw material preheating unit 10 is connected with the inlet of a second gas-solid separator 12 through a calciner reactor 11, and the gas outlet of the second gas-solid separator 12 is communicated with the cathode of a molten carbonate fuel cell 15 through a second regenerator 14. The solid outlet of the second gas-solid separator 12 is connected to the feed unit 2 through the regenerated adsorbent producing unit 13.
The first gas-solid separator 5 is connected with the hot material flow side unit of the first heat regenerator 6; the second gas-solid separation 12 is connected with the hot stream side unit of the second regenerator 14. The cold material flow outlet of the first heat regenerator 6 is connected with the anode inlet of the fuel cell; the cold stream outlet of second regenerator 14 is connected to the cathode inlet of the fuel cell.
The utility model relates to a melting carbonate fuel cell and calcium circulation integrated system during operation: the synthesis gas (with the components of H2, CO2 and H2O) in the synthesis gas unit 1 and the adsorbent materials (Cao and MgO) in the raw material unit 2 enter the first raw material preheating unit 3 and are heated to 800 ℃ to enter the carbonation reaction unit 4, and the CO is mainly treated in the carbonation reaction unit 42、H2The adsorption reaction of O and the reformation of CO, the gas-solid mixture after the reaction enters a first gas-solid separator 5, the separated gas mainly contains hydrogen and a small amount of CO and CO2、H2O, the solids separated off being predominantly CaCO3、MgO、[Ca、Mg]CO3The gas separated by the first gas-solid separator 5 enters the first regenerator 6 before the anode of the molten carbonate fuel cell 15, so that the gas enters the anode of the molten carbonate fuel cell 15 after being cooled to the fuel cell reaction temperature of 650 ℃.
The mixture of calcium carbonate and magnesium carbonate generated by gas-solid separation after the carbonation reaction, methane and air enter a second preheating unit 10 before calcination, are heated to 850-900 ℃, and are sent to a calciner reactor 11, the combustion of the methane and the air replaces the used pure oxygen, the reaction is the regenerative adsorbents CaO and MgO, and the regenerative adsorbents are the same as the raw materials of the carbonation reaction. The gas separated by the second gas-solid separation 12 mainly comprises oxygen, carbon dioxide and nitrogen, and enters the second heat regenerator 14, so that the gas enters the cathode of the molten carbonate fuel cell 15 after being cooled to the cathode reaction temperature of 650 ℃. The solid separated by the second gas-solid separation 12 is regenerated by the regenerated adsorbent generating unit 13 (regenerated adsorbents CaO and MgO) and then enters the raw material unit 2 for recycling.
The anode and cathode gases processed by the heat regenerator enter the molten carbonate fuel cell 15 to generate anode and cathode reactions and generate electric energy, the enriched carbon dioxide generated on the anode side of the molten carbonate fuel cell 15 can be collected and stored, and the gases participating in the fuel cell reaction can enter the carbonation reaction and the calcination reaction again, so that the comprehensive utilization of energy is realized.
It will be appreciated by those skilled in the art that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The embodiments disclosed above are therefore to be considered in all respects as illustrative and not restrictive. All changes which come within the scope of the invention or which are equivalent to the scope of the invention are embraced by the invention.
Claims (8)
1. A molten carbonate fuel cell and calcium looping integrated system, comprising: the system comprises a synthesis gas unit (1), a raw material unit (2), a first raw material preheating unit (3), a carbonation reaction unit (4), a first gas-solid separator (5), a second raw material preheating unit (10), a calciner reactor (11), a second gas-solid separator (12) and a fuel cell;
the output ports of the synthesis gas unit (1) and the raw material unit (2) are connected with the inlet of the first raw material preheating unit (3); the outlet of the first raw material preheating unit (3) is connected with the inlet of the carbonation reaction unit (4); an outlet of the carbonation reaction unit (4) is connected with an inlet of the first gas-solid separator (5), and a gas outlet of the first gas-solid separator (5) is communicated with an anode of the fuel cell;
an outlet of the methane unit (8), an outlet of the air unit (9) and a solid outlet of the first gas-solid separator (5) are connected with an inlet of a second raw material preheating unit (10), the second raw material preheating unit (10) is connected with an inlet of a second gas-solid separator (12) through a calciner reactor (11), and a gas outlet of the second gas-solid separator (12) is communicated with a cathode of a fuel cell.
2. A molten carbonate fuel cell and calcium looping integrated system according to claim 1, characterized in that the solid outlet of the second gas-solid separator (12) is connected to the regenerated sorbent generating unit (13).
3. A molten carbonate fuel cell and calcium looping integrated system according to claim 2, characterized in that the outlet of the regenerative sorbent generation unit (13) is connected to the feed unit (2).
4. A molten carbonate fuel cell and calcium cycle integrated system according to claim 1, further comprising a first regenerator (6) and a second regenerator (14);
the gas outlet of the first gas-solid separator (5) is communicated with the anode of the molten carbonate fuel cell through a first heat regenerator (6);
the gas outlet of the second gas-solid separator (12) is communicated with the cathode of the salt fuel cell through a second regenerator (14).
5. A molten carbonate fuel cell and calcium recycle integrated system according to claim 4, characterized in that the first gas-solid separator (5) is connected to the hot stream side unit of the first regenerator (6); the second gas-solid separation (12) is connected with a hot material flow side unit of a second heat regenerator (14); the cold material flow outlet of the first heat regenerator (6) is connected with the anode inlet of the fuel cell; the cold flow outlet of the second regenerator (14) is connected to the cathode inlet of the fuel cell.
6. The integrated molten carbonate fuel cell and calcium looping system according to claim 1, wherein said fuel cell is a molten carbonate fuel cell.
7. A molten carbonate fuel cell and calcium recycle integrated system according to claim 1 further comprising a regenerated sorbent generation unit (13), the solids outlet of the second gas-solid separator (12) being connected to the feed unit (2) via the regenerated sorbent generation unit (13).
8. The molten carbonate fuel cell and calcium looping integrated system according to claim 1, wherein the first raw material preheating unit (3) and the second raw material preheating unit (10) employ a combustor; the carbonation reaction unit (4) adopts a fluidized bed reactor.
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| CN201921127306.8U CN210092233U (en) | 2019-07-17 | 2019-07-17 | Molten carbonate fuel cell and calcium circulation integrated system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110380092A (en) * | 2019-07-17 | 2019-10-25 | 中国华能集团清洁能源技术研究院有限公司 | A kind of molten carbonate fuel cell and calcium recycle integrated system and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110380092A (en) * | 2019-07-17 | 2019-10-25 | 中国华能集团清洁能源技术研究院有限公司 | A kind of molten carbonate fuel cell and calcium recycle integrated system and method |
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