Catalytic purifier unit

Details Catalytic purifier unit Catalytic purifier unit

1978-03-20

1979-03-13

Shine, W. J.

Compositions

Preservative agents

Anti-oxidants or chemical change inhibitants

252477R, B01J 3504

Patent

active

RE0299324

ABSTRACT:
The invention relates to A Purifier unit comprises a porous body coated with a substance having catalytic action to bring about purification of a medium, primarily a gas passing through the unit. A main field of use is the purification of hot exhaust gases from internal combustion engines. To render the porous purifier unit insensitive to the high temperature of the engine exhaust gases and the great variations of temperature, particularly in winter time when starting a motor vehicle, and at the same time resistant to high mechanical stress and shock arising mainly from jolts and vibrations of a motor vehicle in motion, the porous body is comprised of a plurality of thin, at least partly corrugated, layers forming between themselves fine passageways extending from end to end for the medium to be purified and coated with the catalyst. The layers consist of a skeleton obtained from asbestos paper by precipitation of certain inorganic substances and subsequent heating to the fusing or slagging temperature for said substances.

REFERENCES:
patent: 3697447 (1972-10-01), Bettinardi
patent: 3754870 (1973-08-01), Carnahan et al.
patent: 3798006 (1974-03-01), Balluff

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