Motor vehicle tail gas processor

一种机动车尾气处理器

Abstract

本实用新型公开了一种机动车尾气处理器,将固体尿素加进主体单元内部,当控制器检测到汽车尾气内含有氮氧化物时,控制器控制主体单元工作,即加热装置加热主体单元内的固体尿素生成氨气,并从氨气输出口输出,氨气进入与之相连通的SCR箱体,氨气与汽车尾气中的氮氧化物在SCR箱体中的金属载体中发生氧化还原反应,生成无污染的氮气和水蒸汽,洁净后的尾气从SCR箱体另一端的出气管中排出。本实用新型提供的机动车尾气处理器,由于采用了固体尿素,在低温下不会结冰,存放和携带极为方便,相比于现有技术中的液体尿素,在尿素罐中的存储量较大,使用时间更长;另一方面,由于在工作过程中是直接从固态变为气态,因此,不会淤塞连接管。
The utility model discloses a motor vehicle tail gas processor. According to the motor vehicle tail gas processor, solid urea is added into the inside of a main body unit, when a controller detects that nitrogen oxides are contained in tail gas of a car, the controller controls the main body unit to work, namely a heating device carries out heating on the solid urea inside the main body unit to generate ammonia gas, the ammonia gas is output through an ammonia gas outlet, the ammonia gas enters a selective catalytic reduction (SCR) box body which is communicated with the ammonia gas outlet, the ammonia gas and the nitrogen oxides in the tail gas of the car undergo a redox reaction in a metal carrier in the SCR box body to form pollution-free nitrogen and pollution-free steam, and the tail gas is discharged through a gas outlet pipe at the other end of the SCR box body after being cleaned. According to the motor vehicle tail gas processor, due to the fact that the solid urea is adopted, the solid urea cannot be frozen at low temperature, and is convenient to store and carry, compared with liquid urea in the prior art, the storage amount of the solid urea in a urea pot is larger, and usage time is longer, and on the other hand due to the fact that the solid urea directly changes from a solid state to a gas state in a working process, a connecting pipe cannot be blocked.

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Cited By (2)

    Publication numberPublication dateAssigneeTitle
    CN-103089378-AMay 08, 2013吉林省众鑫汽车装备有限公司Motor vehicle exhaust processing device
    CN-103089378-BApril 29, 2015吉林省众鑫汽车装备有限公司Motor vehicle exhaust processing device