A processing technology of fe-sdpf catalytic emission control purifier

Abstract

The invention discloses a processing technology of an Fe-SDPF catalytic emission control purifier. The processing technology comprises the following steps: the ingredients of the cDPF coating, and the composition of the base layer coating are converted according to the molar equivalent and the volume of the carrier combined with the condition of the engine, The aluminum sol is at 105 grams per liter, and the precious metal calculates the ratio of precious metal Pt to Pd or the amount of single Pt according to the engine operating conditions. The processing technology of this kind of Fe-SDPF catalytic emission control purifier combines cDPF and SCR into the same carrier after redesigning the formula, eliminating the use of the original SCR straight-through carrier, and making the product more efficient under the condition of improved product performance The cost is reduced, and at the same time, it can save the cost for the exhaust pipe manufacturing in the next process. In the exhaust pipe package, this product needs to combine the product cDPF and Fe‑SCR coating boundary to embed the urea or ammonia nozzle to achieve purification. All the features of a catalyst, and in most cases, a smaller system size.

Description

technical field [0001] The invention relates to the technical field of purifiers, in particular to a processing technology of a Fe-SDPF catalytic emission control purifier. Background technique [0002] At present, my country's manufacturing industry is in an important transition period, the country is paying more and more attention to environmental protection, and the country's requirements for environmental protection purifiers are getting higher and higher, especially for the internal combustion engine industry, which urgently needs to fully implement low-emission engines. Fuel conditions cannot produce a zero-emission internal combustion engine. As the main power source of mobile sources, the internal combustion engine must meet the needs of the country's ever-increasing emission standards. [0003] The exhaust gas emitted by the internal combustion engine contains CO, HC, NOx, particle size PM and part of SOx, of which Sox mainly comes from the sulfide in the fuel. After...

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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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