Processing technology of Fe-SDPF catalytic emission control purifier

Abstract

The invention discloses a processing technology of a Fe-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, controlling the content of aluminum solto be 105 g / L and calculating the ratio of noble metal Pt to Pd or the dosage of single Pt according to the working condition of the engine. According to the processing technology of the Fe-SDPF catalytic emission control purifier, after a formula is redesigned, the cDPF and the SCR are combined into the same carrier, the original SCR straight-through type carrier is omitted, the product cost is reduced under the condition that the product performance is improved, meanwhile, the cost can be saved for manufacturing of an exhaust pipe in the next procedure; and the product needs to be combined with a coating boundary of a product cDPF and Fe-SCR to be embedded into a urea or ammonia nozzle in exhaust pipe packaging, so that all functions of a purification catalyst are achieved, and the volume of a system is smaller under most conditions.

Description

technical field [0001] The invention relates to the technical field of purifiers, in particular to a processing technology of an Fe-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 the internal combustion engine contains CO, HC, NOx, particle size PM and some SOx. The Sox ...

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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. Variations on product back pressure ensure that these process parameters are able to meet engine exhaust requirements

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