Selective catalytic reduction system of solid reductant

Abstract

The invention discloses a selective catalytic reduction system of a solid reductant. The system comprises an exhaust gas treatment device, a controller, a solid ammonia storing device, a gasometer, a first switch and a second switch; the solid ammonia storing device is communicated with the exhaust gas treatment device through a first pipeline and communicated with the gasometer through a second pipeline; the gasometer is communicated with an exhaust gas conveying pipe through a third pipeline; the exhaust gas conveying pipe conveys the exhaust gas to the exhaust gas treatment device; the first switch is arranged on the first pipeline; the second switch is arranged on the third pipeline; the controller is connected with the first switch and the second switch. With the adoption of the selective catalytic reduction system of the solid reductant, the ammonia can be provided smoothly.

Description

Technical field

[0001] The present invention relates to the technical field of tail gas treatment, in particular to a solid reductant selective catalytic reduction system. Background technique

[0002] In recent years, air pollution has become more and more serious. Nearly 70% of the pollution sources are harmful substances such as soot particles, carbon monoxide, hydrocarbons, and nitrogen oxides emitted by motor vehicle exhaust. Most countries in Europe are already implementing the Euro IV emission standards, and our country has also put air pollution control as the top priority of current work. Therefore, the technology to meet the standards (National Four Standards) for vehicle exhaust emissions is also a major issue in the field of environmental protection. A technology for processing motor vehicle exhaust requires a reducing agent. After it is fully mixed with engine exhaust, a catalytic reduction reaction occurs through a carrier containing a catalyst to achieve the purpo...

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