Sk Innovation Co., Ltd.

Sk Energy Co., Ltd.

Joon-Seok Min

Yong-Woo Kim

Seong-Ho Lee

Wha-Sik Min

Chang-Q Lee

Sang Hoon Park

Nicholas Kim

Do-Woan Kim

Gi-Ho Goh

Hong-Seok Jung

Sung-Hyoan Kim

Yun-Guen Cho

Hyo-Jun Jeon

The present invention relates to an exhaust gas purifying device for a diesel engine, which purifies efficiently Nitrogen Oxides (NOx) and Particulate Matters (PM) contained in exhaust gases of the diesel engine, particularly provides an exhaust gas purifying device disposed in an exhaust passage of a diesel engine, wherein a catalyst part for reducing Nitrogen Oxides and a filter part for removing Particulate Matter are provided sequentially from an upstream for a flow of the exhaust gas and a diesel fuel injector is mounted at a front of the Nitrogen Oxide reduction catalyst part.

Exhaust gas purifying device for diesel engine

Disclosed is a catalytic filter for removing soot particulates from diesel engine exhaust, which is comprised of monolithic oxidation catalyst upstream of the catalytic filter, which effectively oxidize gaseous pollutants and volatile organic fractions, and a catalyzed wall-flow filter downstream serving to low temperature combustion of soot particulates collected on the filter. Also, the preparation method of the catalytic filter is provided, including the colloidal mixture solution of platinum group metal salts and other metal salts with a water-soluble polymer and a reducing agent, which is then impregnated on a catalyst support, followed by calcining at high temperatures. In the present invention, use of the catalytic filter provides effective means of abating diesel exhaust pollutant emissions, that is, particulate matter (PM) and gaseous pollutants (HC, CO, NOx).

Catalytic filter for removing soot particulates from diesel engine exhaust and method of preparing the same

Growing community of inventors

Daejeon, South Korea

Joon-Seok Min