B - Operations – Transporting – 01 – D
Patent
B - Operations, Transporting
01
D
B01D 39/10 (2006.01) B01D 39/20 (2006.01) B01D 46/24 (2006.01) B22F 3/11 (2006.01) B22F 7/00 (2006.01) F01N 3/021 (2006.01) F01N 3/022 (2006.01) F01N 3/28 (2006.01)
Patent
CA 2190238
A sintered porous metal filter permitting passage of gases therethrough comprises a filter portion having specified pores for trapping dust as separated from the gas to be treated, and a support portion for supporting the filter portion, the support portion having pores greater than the pores of the filter portion to diminish the pressure loss of the gas to be treated, the filter portion comprising metal particles of small diameter, the support portion comprising metal particles having a greater diameter than the filter portion forming metal particles, the filter portion and the support portion being formed to provide an outer side and an inner side integral therewith by sintering the two kinds of metal particles by hot isostatic pressing. A catalyst reaction portion for rendering noxious components of the gas to be treated harmless is formed in the filter portion or the support portion, or as an independent catalyst layer.
Un filtre de métal fritté permettant le passage de gaz comprend un filtre possédant les pores spécifiés pour la capture de la poussière s'échappant du gaz devant être traité et un support pour soutenir le filtre, le support possédant des pores de diamètre supérieur aux pores du filtre afin de réduire la perte de pression du gaz devant être traité. Le filtre comprend des particules métalliques de faible diamètre, le support comprend des particules métalliques d'un diamètre supérieur aux particules de métal du filtre, le filtre et le support étant formés de manière à fournir une paroi extérieure et une paroi intérieure en frittant les deux sortes de particules métalliques par pressage isostatique à chaud. Une réaction catalytique rendant inoffensifs les éléments nocifs du gaz devant être traité se déroule dans le filtre, dans le support ou dans une couche catalytique indépendante.
Funakoshi Jun
Ishida Takashige
Kimura Tetsuo
Kosaka Akira
Motoki Ryutaro
Kubota Corporation
Ridout & Maybee Llp
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