Gas filter with catalytic coating and a gastight downstream regi

Details Gas filter with catalytic coating and a gastight downstream regi Gas filter with catalytic coating and a gastight downstream regi

1990-06-29

1992-02-18

Robinson, Douglas W.

Chemical apparatus and process disinfecting, deodorizing, preser

Chemical reactor

Waste gas purifier

422222, 422239, B01D 5000, B01J 802

Patent

active

050892371

ABSTRACT:
A soot burn-off filter including a monolithic filter block made of porous ceramic with a multiplicity of channels which extend in the direction of flow of the exhaust gases of a combustion engine. The channels are sealed alternately at the ends by plugs and are separated from one another by porous partition walls. The partition walls are provided with a catalytic coating and have an increased flow resistance in a region at the downstream end of the filter, the partition walls in this region being of gastight design and the catalytic coating of the partition walls ending in a region upstream of the gastight region of the partition walls.

REFERENCES:
patent: 4390355 (1983-06-01), Hammond et al.
patent: 4515758 (1985-05-01), Domesle et al.
patent: 4652286 (1987-03-01), Kusuda et al.

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