Diesel Engine Exhaust Gasexhaust Gas Catalytic Purification Purification
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Mr. Guangwen Liu(Mr.)
D1, First Phase, ASEAN Corporate Headquarter, No. 1, High-Tech Zone Headquarters Road, Nanjing, Guangxi, China. 536000
The main component of diesel engine exhaust gas purification catalyst (DPF catalystDPF ) of the basic metal compound Panasonic R & D , can be directly oxidized and decomposed in the diesel engine exhaust particulate matter (PM). Compared to the conventional platinum catalyst , since the NOx catalyst without passing through the DOC conversion NO2, thus reducing the amount of expensive platinum , lower cost , and can obtain the same decomposition performance at lower temperatures, and in temperature can be increased at the same rate of decomposition .
Use of the catalyst can also improve the combustion performance to the number of PM 's calculations , can reach more than 90% removal efficiency . In addition , the use of the present catalyst can also be a diesel engine exhaust gas treatment apparatus to reduce the cost and energy efficiency .
The hea·resistant ceramic surface coated with the catalyst, the catalyst of the DPF arranged on the downstream of the DOC , the exhaust gas can be removed in the formation of PM in diesel engine exhaust gas treatment device .
2.The basic principles and characteristics
<Basic principles >
The catalyst contains a metal oxide , an alkali metal sulfate , and quartz. The three dimensional structure of a separator made of a porous material having uniform adsorption state is maintained , through the membrane having an average pore size of 5 ~ 15um pore structure , thereby obtaining the exhaust gas having a high catalytic activity and heat resistance, and the collection efficiency purifying filter .
high combustion performance PM
high catalyst durability
by low temperature decomposition of particulate matter and energy saving
oxygen using a catalyst in the decomposition of the platinum and cost due to less
3.Pollution control effect :
· PM quantity calculation results show that the removal rate reached more than 90%.
Using engine bench test devices, measuring catalyst DPF on this measuring device ( vehicle exhaust particulates counter ) by particulate matter contained in exhaust gas downstream of the number of PM , the experimental results obtained indicate a high removal rate .