Tail gas dehydrogenation device for fuel cell automobile

Abstract

The utility model relates to a tail gas dehydrogenation device for a fuel cell automobile, and belongs to a purification treatment device. The device is used for purifying fuel cell hydrogen tail gas.The device comprises a tail gas pipe, a gas pipe, a cyclone separator and a catalyst, wherein the cyclone separator is connected with the catalyst through a hose, the tail gas pipe is connected to agas inlet at one end of the cyclone separator, and the gas pipe is connected with a bottom gas inlet of the cyclone separator; an electromagnetic valve is arranged between the hose and the cyclone separator; when the pressure in the cyclone separator reaches a set value, the electromagnetic valve is automatically opened; the catalyst arranged in the catalyst is used for carrying out catalytic reaction on oxygen and hydrogen to generate water, so that the purpose of safe discharge is achieved. The invention has the beneficial effects that the device can guarantee that the hydrogen-containing tail gas discharged by a fuel cell system is safely purified and treated in a catalytic reaction mode, and reduces the potential influence and harm possibly caused to the atmosphere and the environmentdue to hydrogen emission. The device is high in system integration level, small in occupied space and convenient to mount and dismount.

Description

technical field [0001] The invention belongs to a purification treatment device, which is used for the purification treatment of the hydrogen tail gas of a fuel cell. Background technique [0002] Fuel cell is the fourth-generation power generation technology after hydropower, thermal power and atomic power generation. It is also the only power device with pollution-free, high-efficiency, wide application, no noise and continuous work. It is considered to be the most promising power plant in the 21st century. High-efficiency and clean power generation technology with promising development prospects. Compared with the three new energy industries of biofuel, wind power and solar energy, the current market scale of fuel cells is still small. [0003] At present, the application of fuel cells is mainly concentrated in three fields: the application of fuel cells in motor vehicles, the application of fuel cells in portable equipment, and the application of fuel cells in stationar...

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Problems solved by technology

[0006] At present, in response to the above problems, the industry adopts two technical routes to deal with them. The first one is to inject a large amount of air into the exhaust gas to dilute the hydrogen in it so that it is discharged below the lower limit of explosive concentration. Intermittent discharge, and the concentration of hydrogen in the exhaust gas fluctuates greatly, so it is necessary to start and stop the air injection fan in real time, and adjust the air injection volume in real time, and the adjustment control is more complicated

The second is to use a reaction catalyst to make hydrogen react to generate water and then discharge it. However, the system integration degree of this method is not high, and there are many inconveniences in practical applications, such as inconvenient installation and disassembly of the device, low catalyst activity at low temperatures, and catalyst It is inconvenient to replace, and more importantly, the air mixing system in the catalytic reaction is not adaptable

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