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Pneumatic powder feeding type molten carbonate direct carbon fuel cell stack

A technology of molten carbonate and fuel cell stacks, applied in the direction of molten electrolyte fuel cells, fuel cell groups, fuel cell components, etc., to achieve the effects of easy implementation, improved overall performance, and enhanced heat and mass transfer process

Active Publication Date: 2012-01-04
HUANENG CLEAN ENERGY RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0016] In order to overcome the above-mentioned shortcoming of prior art, the object of the present invention is to provide a kind of gas powder feeding type molten carbonate direct carbon fuel cell stack, adopts gas powder feeding type structure, has solved the difficulty of direct carbon fuel cell stack, and The problem of continuous feeding of solid carbon fuel makes the structure of the fuel cell stack more compact, improves the volume power density of the battery stack, strengthens the internal heat and mass transfer process of the battery stack, and improves the overall performance of the battery stack. At the same time, the equipment is simple and easy to implement , to facilitate the formation of large-scale battery packs

Method used

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  • Pneumatic powder feeding type molten carbonate direct carbon fuel cell stack
  • Pneumatic powder feeding type molten carbonate direct carbon fuel cell stack
  • Pneumatic powder feeding type molten carbonate direct carbon fuel cell stack

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Such as figure 1 and figure 2 As shown, a gas powder-feeding type molten carbonate direct carbon fuel cell stack is formed by stacking 30 fuel cell monomers. Electrolyte diaphragm 10, cathode 9 and cathode current collecting plate 4 are compressed, anode current collecting plate 2 has multiple horizontal and parallel anode gas flow channels 8, and cathode current collecting plate 4 has multiple horizontal and parallel cathode gas flow channels The flow channel 3 and the anode 11 are evenly distributed with a plurality of anode plate openings 15, and each anode plate opening 15 communicates with one or more anode gas flow channels 8, and the entrance of the anode gas flow channel 8 communicates with the carbon fuel tank 14 The feed port of the anode gas flow channel 8 is connected to the air supply port of the cyclone separator 7, and there is CO 2 There is a carbon fuel circuit 13 between the gas circuit 1 , the ash discharge pipe of the cyclone separator 7 and the f...

Embodiment 2

[0039] The difference from Embodiment 1 is that the direction of the anode gas flow channel 8 and the cathode gas flow channel 3 are the same as each other, showing a downstream flow type; the number of fuel cell cells is 60, and the size of the cell cells is about 20cm×20cm; 43 %Li 2 CO 3 -57%K 2 CO 3 The mixture is used as the electrolyte; carbon black with a particle size of 2 mm to 100 μm is used as the solid carbon fuel; a 2:1 CO 2 Mixture with oxygen as cathode gas; pure CO 2 As the anode powder feeding gas, after the reaction, the outlet of the exhaust pipe of the cyclone separator is CO 2 50% enters the carbon fuel bin for gas transportation of carbon black powder, 40% enters the cathode gas flow channel, mixes with oxygen according to 2:1 and is used as cathode gas, and the remaining 10% is directly emptied; the working temperature of the battery stack is 700 ℃.

[0040] When the fuel cell stack is working, carbon black powder is stored in the carbon fuel bin 14...

Embodiment 3

[0043] The difference from Embodiment 1 is that the direction of the anode gas flow channel 8 and the cathode gas flow channel 3 are the same as each other, and they are in a countercurrent flow pattern; the number of fuel cell cells is 50, and the size of the cell cells is about 40cm×40cm; 43% Li 2 CO 3 -21%Na 2 CO 3 -36%K 2 CO 3 The mixture is used as electrolyte; coal with a particle size of 1mm-10nm is used as solid carbon fuel; 2:1 CO 2 Mixture with air as cathode gas; pure CO 2 As the anode powder feeding gas, after the reaction, the outlet of the exhaust pipe of the cyclone separator is CO 2 20% enters the carbon fuel bin for gas transportation of pulverized coal, 40% enters the cathode gas channel, mixes with air at a ratio of 2:1 and is used as cathode gas, and the remaining 40% is directly emptied; the working temperature of the battery stack is 750°C .

[0044] When the fuel cell stack is working, the pulverized coal is stored in the carbon fuel bin 14, and...

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Abstract

The invention relates to a pneumatic powder feeding type molten carbonate direct carbon fuel cell stack which comprises a fuel cell monomer, a cyclone separator, a carbon fuel bin, a carbon fuel loop, a CO2 gas loop and other components; the fuel cell stack is formed by stacking a plurality of fuel cell monomers; solid carbon fuel powder is deposited in the carbon fuel bin; CO2 gas flows through the carbon fuel bin, and flows into an anode gas flow channel by carrying the carbon fuel powder; the carbon fuel powder passes through an anode plate opening, comes into direct contact with a molten electrolyte in an electrolyte diaphragm, and is adhered on the electrolyte diaphragm for the anode reaction of the fuel cell; and unreacted carbon fuel powder and the CO2 gas are separated through thecyclone separator after anode reaction, the carbon fuel powder is recycled, the separated CO2 gas is partially delivered to the carbon fuel bin for carrying the carbon fuel powder and is partially introduced into a cathode gas flow channel for a cathode reaction, and the residual CO2 gas is evacuated directly. According to the invention, the difficulty in continuous feeding of a solid carbon fuelfor the direct carbon fuel cell is eliminated, and the structure of the direct carbon fuel cell stack is compact and reasonable, and is convenient for amplification.

Description

technical field [0001] The invention belongs to the technical field of carbon fuel cells, in particular to a gas powder-feeding type molten carbonate direct carbon fuel cell stack. Background technique [0002] Energy is the pillar of the national economy and the driving force necessary for the development of human society. Since the Industrial Revolution, human power has been obtained mainly through heat engines. However, since the heat engine is limited by the "Carnot limit", it is difficult to improve the efficiency, resulting in a waste of energy, and at the same time, a large amount of pollutants are emitted, which seriously endangers the human living environment. Therefore, exploring clean, environmentally friendly and efficient energy utilization methods has become an inevitable direction of world energy development. [0003] Fuel cells can directly convert chemical energy in fuel into electrical energy, and have the advantages of high energy conversion efficiency, ...

Claims

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Application Information

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IPC IPC(8): H01M8/24H01M8/14H01M8/02
CPCY02E60/526Y02E60/50
Inventor 许世森李晨程健徐越王保民
Owner HUANENG CLEAN ENERGY RES INST
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