Exhaust as purifying method, exhaust gas filter, and exhaust gas

Details Exhaust as purifying method, exhaust gas filter, and exhaust gas Exhaust as purifying method, exhaust gas filter, and exhaust gas

1997-07-08

1998-12-29

Smith, Duane S.

Gas separation: processes

Filtering

55283, 55523, 55DIG30, 60311, 95 18, 95278, C04B 3800, B01D 4600

Patent

active

058534598

ABSTRACT:
An exhaust gas purifying method, an exhaust gas filter and an exhaust gas filter purifying apparatus reduce the quantity of collected particulates on the outer periphery of the exhaust gas filter and prevent insufficient combustion of particulates during regeneration. The exhaust gas purifying method purifies an exhaust gas by using an exhaust gas filter including a throughhole diaphragm formed into a honey-comb shape in an outer peripheral wall integrally with this outer peripheral wall. A sealing portion is formed on an end portion of a plurality of throughholes partitioned by the throughhole diaphragm, so that the quantity of particulates collected in the throughholes adjacent to the outer peripheral wall and the throughhole diaphragm is reduced as compared with the other portions. The exhaust gas filter has a second sealing portion formed in the throughholes adjacent to the outer peripheral wall and the sealing portion on one end surface of the exhaust gas filter.

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