Exhaust gas cleaning apparatus

Details Exhaust gas cleaning apparatus Exhaust gas cleaning apparatus

2004-10-05

2008-12-23

Griffin, Walter D. (Department: 1797)

Chemical apparatus and process disinfecting, deodorizing, preser

Chemical reactor

Waste gas purifier

C422S168000, C422S171000, C422S177000

Reexamination Certificate

active

07468166

ABSTRACT:
An exhaust gas cleaning apparatus for cleaning an exhaust gas emitted from a combustion engine has a stack of plural material layers successively arranged on each other in a stacking direction. The material layers are made of a porous material being permeable to the exhaust gas. The stack has an entry side and an exit side. Plural exhaust gas flow channels are defined in the stacking direction between two adjacent material layers in the stack. The exhaust gas flow channels are defined by surfaces of the material layers which have, when viewed in a flow direction of the exhaust gas from the entry side to the exit side, a plurality of concave and convex areas. A first group of exhaust gas flow channels is formed to be open at the entry side of the stack and closed at the exit side thereof.

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Machine translation and Derwent translated Abstract of DE 19 750 980.
Gerd Gaiser, et al., “Warme- und Stoffubergang in Katalysatoren mit regelmaβiger Formgebung”, Chem.-Ing.-Tech. 61 (1989), No. 9, pp. 729-731— This publication discloses heat and particle transport characteristics in a catalyst for exhaust gas cleaning having flow channels defined by corrugated walls which are impermeable for the exhaust gas.

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