F - Mech Eng,Light,Heat,Weapons – 01 – N
Patent
F - Mech Eng,Light,Heat,Weapons
01
N
F01N 3/10 (2006.01) B01J 35/00 (2006.01) B01J 35/04 (2006.01) F01N 3/20 (2006.01) F01N 3/28 (2006.01)
Patent
CA 2124157
ABSTRACT OF THE DISCLOSURE An improved converter body fox carrying out chemical reactions, such as oxidation, and especially oxidation of pollutant materials in exhaust streams, which converter includes an electrically heatable portion characterized by a multicellular honeycomb monolith and an integral non-electrically heatable multicellular honeycomb "light-off" portion each constructed of thin sheet metal layers. The electrically heatable portion has a surface area of from 200 to 700 square inches and is capable of being rapidly heated to a temperature of from 400 F to 900 F in a period of from about 2 to about 40 seconds from a voltage source delivering at least 500 watts of power, and the electrically heatable honeycomb portion has a cell density of from 40 to 500 calls per square inch. The "light-off" portion has a surface area in the range of from 800 to 5000 square inches and a cell density of from 200 to 750 cells per square inch.
Gowling Lafleur Henderson Llp
W.r. Grace & Co.,-Conn.
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