Catalyst carrier for a catalytic converter for purifying an exha

Details Catalyst carrier for a catalytic converter for purifying an exha Catalyst carrier for a catalytic converter for purifying an exha

1995-04-20

1996-10-22

Warden, Robert J.

Chemical apparatus and process disinfecting, deodorizing, preser

Chemical reactor

Waste gas purifier

422177, 422211, 422222, 502527, B01D 5334

Patent

active

055673953

ABSTRACT:
A flat-corrugated combined sheet 16 is obtained from a flat sheet 10 and corrugated sheets 12 and 14 which are welded together. The combined sheet 16 is rolled, so that a catalyst carrier 18 of a honeycomb structure to which an exhaust gas is contacted is obtained. At a middle part of the catalyst carrier 18, the flat sheet 10 has a section 10-1 free of corrugated sheet, and is formed with louvers 21, so that, in the rolled state, a turbulence generating section 30 is created. At a location upstream from the turbulence generating section 30, the flat sheet 10 has spaced sections 10-2 free of corrugated sheet, so that, in the rolled state, low flow-resistance sections 22 are created. The dissipation of heat of the exhaust gas is reduced at the sections 22, so that the temperature of the exhaust gas introduced into the turbulence generating section 30 at locations downstream from the low flow-resistance sections 22 is high, thereby promoting an activation of the catalyst at the section 30.

REFERENCES:
patent: 4152302 (1979-05-01), Nonnenmann et al.
patent: 4162993 (1979-07-01), Retallick
patent: 4273681 (1981-06-01), Nonnenmann
patent: 4987034 (1991-01-01), Hitachi et al.
patent: 5278125 (1994-01-01), Iida et al.
patent: 5456890 (1995-10-01), Tsai et al.
patent: 5468455 (1995-11-01), Bruck

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