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 ma

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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
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Example Embodiment

[0032] Example one

[0033] Such as figure 1 with figure 2 As shown, a gas-fed molten carbonate direct carbon fuel cell stack is formed by stacking 30 fuel cell monomers, and the fuel cell monomers are composed of an anode current collector plate 2, an anode 11, and an anode from top to bottom. The electrolyte diaphragm 10, the cathode 9 and the cathode current collecting plate 4 are compressed and composed. The anode current collecting plate 2 is provided with multiple horizontally parallel anode gas flow channels 8, and the cathode current collecting plate 4 is provided with multiple horizontally parallel cathode gas. In the flow channel 3, a plurality of anode plate openings 15 are uniformly distributed on the anode 11, and each anode plate opening 15 is connected to one or more anode gas flow channels 8, and the inlet of the anode gas flow channel 8 is connected to the carbon fuel bin 14 The outlet of the anode gas flow path 8 is connected to the air supply port of the cycl...

Example Embodiment

[0038] Example two

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

[0040] When the fuel cell stack is working, the carbon black powder is stored in the carbon fuel bin 14, and the CO 2 The gas ...

Example Embodiment

[0042] Example three

[0043] The difference from the first embodiment is that the anode gas flow channel 8 and the cathode gas flow channel 3 are in the same direction as each other, and are in a countercurrent flow type; the number of fuel cell cells is 50, and the cell size is about 40cm×40cm; 43% Li 2 CO 3 -21%Na 2 CO 3 -36%K 2 CO 3 As the electrolyte; using coal with a particle size of 1mm~10nm as solid carbon fuel; using 2:1 CO 2 Mixture with air as cathode gas; using pure CO 2 As the anode powder feeding gas, after the reaction, the cyclone separator exhaust pipe outlet CO 2 20% enters the carbon fuel bunker for gas transportation of coal powder, 40% enters the cathode gas flow channel, and is mixed with air in a 2:1 ratio as the cathode gas, and the remaining 40% is directly evacuated; the stack working temperature is 750℃ .

[0044] When the fuel cell stack is working, the pulverized coal is stored in the carbon fuel bin 14, and the CO 2 The gas flows through the carbon f...

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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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