A direct carbon solid oxide fuel cell stack and its power generation device
A fuel cell stack, solid oxide technology, applied in fuel cells, fuel cell additives, electrochemical generators, etc., can solve the problems of slow Boudouard reaction, improve reaction rate, enhance uniformity, and improve device efficiency Effect
Active Publication Date: 2021-10-19
创电(上海)新能源科技有限公司
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Problems solved by technology
[0006] Purpose of the invention: the purpose of the present invention is to provide a direct carbon solid oxide fuel cell stack and its power generation device to solve the problem of too slow Boudouard reaction due to the accumulation of a large amount of carbon fuel
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[0027] In order to make the purpose, technical solution and advantages of the present invention clearer, the direct carbon solid oxide fuel cell stack and its power generation device of the present invention will be further described in detail below in conjunction with the accompanying drawings.
[0028] Such as figure 1 As shown, the direct carbon solid oxide fuel cell stack power generation device in this embodiment includes a SOFC stack 1, an air inlet pipe 2, an air outlet hole 3, a fixed end cover 4, and a CO 2 Outlet pipe 5, CO 2 Combiner box 6, transportation pipeline 7, filter 8, CO 2 Recovery pipeline 9, compressor 10, first control valve 11, intake valve 12, CO 2 Gas cylinder 13, CO 2 Gas outlet pipeline 14, gas outlet valve 15, carbon recovery pipeline 16, second control valve 17, carbon feeder 18, carbon delivery pipe 19, third control valve 20, gas-carbon mixing pipe 21, combiner box 22, mixing inlet pipe 23 and Stack support 24. A number of air inlet pipes 2...
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The invention discloses a direct carbon solid oxide fuel cell stack and its power generation device, CO 2 Gas cylinders provide high pressure CO 2 Mix with the carbon powder supplied by the carbon feeder, and then enter the stack through the mixing inlet pipe, so that the CO 2 The mixture with carbon powder flows in a spiral shape inside the stack, and the adjacent upper and lower SOFC single cells in the stack are arranged staggered by 90 degrees, and the adjacent single cells are arranged in reverse, and the carbon fuel flowing in a spiral shape is disturbed to make the carbon fuel uniform Distributed on the surface of the anode of the battery; after the reaction, the tail gas is filtered and separated and then passed through the CO 2 The recovery pipe and the carbon recovery pipe are recycled and reused to improve efficiency; after the air enters the stack reaction, it is discharged through the air outlet hole at the bottom of the air cavity, and the thermal insulation effect of the air layer and the high-temperature waste heat of the discharged air are used to preheat the fuel and react to Boudouard Provide heat compensation to ensure the rapid and stable Boudouard reaction.
Description
technical field [0001] The invention relates to the field of fuel cells, in particular to a direct carbon solid oxide fuel cell stack and a power generating device thereof. Background technique [0002] Hydrogen is the most ideal fuel for solid oxide fuel cells (SOFC), but as a secondary energy source, hydrogen cannot be directly obtained and the storage and transportation technology is not yet mature, so the cost is relatively high. Among the many SOFC fuels, carbon fuel has the most extensive sources, and its high energy density has basically no storage and transportation problems. Therefore, SOFC directly using carbon fuel (DC-SOFC) has received more and more attention. The total reaction of DC-SOFC is: C+O 2 =CO 2 , the entropy change of this reaction is very small, and the carbon fuel is not in contact with the air, which is beneficial to CO 2 reuse and recycling. When starting the DC-SOFC, a certain amount of CO 2 make it react with carbon fuel at high temperature...
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IPC IPC(8): H01M8/241H01M8/2455H01M8/2484H01M8/04082
CPCH01M8/04201H01M8/04216H01M8/241H01M8/2455H01M8/2484Y02E60/50
Inventor 孔为韩振黄红艳张梦彤
Owner 创电(上海)新能源科技有限公司