Nonwoven composites and related products and methods

Details Nonwoven composites and related products and methods Nonwoven composites and related products and methods

B - Operations, Transporting

01

J

B01J 8/02 (2006.01) B01J 20/00 (2006.01) B01J 21/02 (2006.01) B01J 21/04 (2006.01) B01J 21/08 (2006.01) B01J 21/12 (2006.01) B01J 21/14 (2006.01) B01J 23/00 (2006.01) B01J 23/40 (2006.01) B01J 23/42 (2006.01) B01J 23/44 (2006.01) B01J 23/56 (2006.01) C01B 21/00 (2006.01) C03C 3/07 (2006.01) C03C 3/083 (2006.01) C03C 3/089 (2006.01) C03C 3/091 (2006.01) C03C 3/093 (2006.01)

Patent

CA 2563802

The present invention in certain embodiments is directed to a catalytic substrate suitable for use in a number of applications, including as a substrate in a catalytic converter. Another aspect of the present invention is a filtering substrate suitable for use in a number of applications, including as a substrate in a particulate filter, such as a diesel particulate filter (DPF), or diesel particulate trap (DPT). The invention also provides an improved substrate for removing and/or eliminating pollutants from the exhaust of combustion engines. The catalytic substrate and filtering substrate provide, in certain embodiments, improvements in removing pollutants from an exhaust gas. The improvements include one or more of the following: faster light-off period, depth filtration of PM, less backpressure, lower probability of clogging, ability to be placed in multiple locations in the exhaust system including the manifold or the head itself, high probability of catalytic reaction, high conversion ratios of NOx, HC, and CO, a faster burnoff of PM, minimization of catalyst material use, and the like.

La présente invention dans certains modes de réalisation concerne un substrat catalytique convenant pour une utilisation dans un certain nombre d'applications, incluant comme substrat dans un convertisseur catalytique. Un autre aspect de la présente invention est un substrat de filtrage convenant pour utilisation dans un certain nombre d'applications, incluant comme substrat dans un filtre à particules, tel qu'un filtre à particules pour diesel (PDF), ou un piège à particules pour diesel (DPT). L'invention propose aussi un substrat amélioré pour enlever et/ou éliminer les polluants de l'échappement des moteurs à combustion. Le substrat catalytique et le substrat de filtration fournissent, dans certains cas, des améliorations dans l'enlèvement des polluants de gaz d'échappement. Les améliorations incluent une ou plusieurs des suivantes: période d'allumage plus rapide, profondeur de filtration de PM, moins de contre-pression, plus faible probabilité d'encrassement, possibilité d'être installé en de multiples endroits du système d'échappement y compris le manifold ou la tête elle-même, une forte probabilité de réaction catalytique, de forts taux de conversion de NOx, HC, et CO, un brûlage plus rapide de PM, une minimisation de l'utilisation de matériau catalyseur, et similaires.

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