Tail gas hydrogen elimination system for hydrogen fuel cell
A fuel cell and exhaust technology, applied in fuel cells, electrical components, circuits, etc., can solve the problems of difficulty in reaching 100% hydrogen fuel utilization rate, potential safety hazards, etc., and achieve high hydrogen utilization rate, convenient operation, and manufacturing and maintenance costs. low effect
Pending Publication Date: 2018-03-02
WUHAN MARINE ELECTRIC PROPULSION RES INST CHINA SHIPBUILDING IND CORP NO 712 INST
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Problems solved by technology
[0003] The product of hydrogen fuel cells is only water. However, as far as the current fuel cell technology is concerned, the utilization rate of hydrogen fuel is difficult to reach 100%, so the anode tail gas inevitably contains hydrogen that has not participated in the reaction.
If the hydrogen in the anode tail gas is directly discharged into the atmosphere without any treatment, it will bring serious safety hazards
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[0019] The present invention will be described in further detail below in conjunction with the accompanying drawings.
[0020] refer to figure 1 As shown, the present invention discloses a tail gas dehydrogenation system for hydrogen fuel cells, including a hydrogen fuel cell stack 8, a collection water tank 9, a condenser 3, a dryer 4 and an alloy hydrogen storage tank connected in sequence through connecting pipes 10. The collecting water tank 9 is provided with a steam-water separation device, which can realize the steam-water separation of the tail gas; the collecting water tank 9 is provided with a liquid level gauge 11 and a liquid level switch 12, which are combined and arranged on the drain pipe of the collecting water tank 9 The fourth solenoid valve 7 realizes the timely discharge of liquid water.
[0021] A first solenoid valve 1 and a second solenoid valve 2 are respectively arranged on the connecting pipes between the collection water tank 9 and the hydrogen fuel...
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The invention discloses a tail gas hydrogen elimination system for a hydrogen fuel cell. The tail gas hydrogen elimination system comprises a hydrogen fuel cell stack, a water collecting tank, a condenser, a drier and a hydrogen storage alloy tank which are sequentially communicated through a connecting tube, a steam-water separator is arranged in the water collecting tank, the water discharging tube of the water collecting tank is provided with a fourth solenoid valve, the connecting tube between the drier and the hydrogen storage alloy tank is provided with a gas discharging tube, and the gas discharging tube is provided with a third solenoid valve. The system has the advantages of low power consumption, realization of high hydrogen utilization rate and low cost due to collection of hydrogen in tail gas by the hydrogen storage alloy tank, simple, safe and reliable structure, convenience in operation, and low manufacturing and maintaining cost.
Description
technical field [0001] The invention belongs to the technical field of fuel cells, and in particular relates to a tail gas dehydrogenation system for hydrogen fuel cells. Background technique [0002] A fuel cell is a power generation device that directly converts the chemical energy present in fuel and oxidant into electrical energy through an electrochemical reaction. The difference from conventional batteries is that the chemical energy stored in fuels and oxidants is directly converted into electrical energy through electrochemical reactions. It has high capacity conversion efficiency, high reliability, and low environmental pollution, and has broad development and application prospects. In particular, hydrogen fuel cells are a new, efficient, clean, and adaptable power generation system that has been developed in applications such as automobiles, distributed power generation, backup power supplies, portable power supplies, aircraft, ships, space stations, and submarines...
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Login to View More IPC IPC(8): H01M8/0662
CPCH01M8/0662Y02P70/50Y02E60/50
Inventor 徐增师王雅孙震张海波潘建欣
Owner WUHAN MARINE ELECTRIC PROPULSION RES INST CHINA SHIPBUILDING IND CORP NO 712 INST