Motor vehicle tail gas treater

Abstract

The invention discloses a motor vehicle gas treater. Solid urea can be put into the interior of a main body unit. When a controller detects that the vehicle tail gas contains oxynitride, the controller controls the main body unit to operate, namely a heat device heats the solid urea in the main body unit and the solid urea is generated into ammonia gas. The ammonia gas can be output from an ammonia gas outlet. The ammonia gas enters into a selective catalytic reduction (SCR) box body, wherein the SCR box body is communicated with the ammonia gas. The ammonia gas and the oxynitride in the vehicle tail gas can be in a redox reaction in a metal carrier of the SCR box body to generate pollution-free nitrogen gas and steam. The tail gas can be exhausted from an air outlet pipe of the other end of the SCR box body, wherein the tail gas is cleaned. The motor vehicle tail gas treater adopts the solid urea, and the solid urea can be not frozen in a low temperature. The motor vehicle tail gas treater is extremely convenient to store and carry, compared with liquid urea in an existing technology, the solid urea is larger in storing volume in a urea tank and long in using time. On the other hand, in the working process, the urea is changed form a solid state to a gaseous state. Therefore, the urea cannot slit up a connecting pipe.

Description

technical field [0001] The invention relates to the technical field of tail gas treatment, in particular to a motor vehicle tail gas processor. Background technique [0002] With the development of the economy, the number of automobiles in my country has increased rapidly year after year, and the total amount of pollutants discharged by motor vehicles is large, which seriously affects the quality of the atmospheric environment. Since the environmental protection departments of various countries proposed to further reduce the nitrogen oxide pollutants emitted by diesel engines (commonly known as the Euro IV standard in China), engine manufacturers began to use SCR technology (selective catalytic reduction technology) to meet the requirements of the environmental protection department. Diesel engine exhaust treatment fluid (commonly known as automotive urea in China) is a consumable that must be used in SCR technology. The SCR system includes a urea tank (loaded with automoti...

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Problems solved by technology

[0006] In view of this, the technical problem to be solved by the present invention is to provide a motor vehicle exhaust processor, which can solve the problem of the motor vehicle exhaust processor in the prior art, due to the use of liquid vehicle urea, the storage capacity is small and the low-temperature condensation is silted up. Connecting pipe problem

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