Processing technology of Cu-SDPF catalytic emission control purifier

Abstract

The invention discloses a processing technology of a Cu-SDPF catalytic emission control purifier. The processing technology comprises the following steps of proportioning a cDPF coating, converting the composition of the base coating according to the condition that the molar equivalent and carrier volume are combined with the working condition of an engine, and controlling the content of aluminumsol to be 105 g / L, and calculating the ratio of noble metals Pt and Pd or the dosage of single Pt according to the working condition of the engine, wherein the acid-base value Ph is strictly controlled between 6.0-7.5 in the preparation process. According to the processing technology of the Cu-SDPF catalytic emission control purifier, on the basis of a traditional purification catalyst cDPF+SCR split method, after a formula is redesigned, the cDPF and the SCR are combined into the same carrier, use of an original SCR straight-through carrier is omitted, and the product cost is reduced under the condition that the product performance is improved; and meanwhile, the cost for manufacturing an exhaust pipe in the next procedure can be saved.

Description

technical field [0001] The invention relates to the technical field of purifiers, in particular to a processing technology of a Cu-SDPF catalytic emission control purifier. Background technique [0002] At present, my country's manufacturing industry is in an important transition period. The country pays more and more attention to environmental protection, and the country has higher and higher requirements for environmental protection purifiers. Especially for the internal combustion engine industry, it is urgent to fully implement low-emission engines. With the current internal combustion engine technology and the current The fuel situation cannot produce a zero-emission internal combustion engine. As the main power of the mobile source, the internal combustion engine must meet the needs of the country's continuously increasing emission standards. [0003] The exhaust gas emitted by internal combustion engines contains CO, HC, and NOx particle size PM. In the exhaust gas tre...

AI Technical Summary

Problems solved by technology

[0008] The use of this technology also brings challenges to the manufacture of catalytic converter slurry. It is necessary to improve the relationship and coordination between the porosity of the carrier and the particle size of the coating slurry. It is necessary to pay close attention to the coating slurry and the coating process. The change of the back pressure of the product ensures that these process parameters can meet the needs of engine exhaust. Therefore, a processing technology of Cu-SDPF catalytic emission control purifier is proposed

Images