Exhaust gas torch apparatus

Details Exhaust gas torch apparatus Exhaust gas torch apparatus

1980-12-22

1982-11-23

Hart, Douglas

Power plants

Internal combustion engine with treatment or handling of...

By means producing a chemical reaction of a component of the...

55DIG30, 55269, 60298, 60300, 60303, 422169, 422173, 422174, 422182, 422183, F01N 302

Patent

active

043598633

ABSTRACT:
Apparatus for filtering combustible particles from an exhaust gas stream, and for periodically rejuvenating the filter bed and catalyst section thereof, by incinerating retained particles. At least a portion of an engine's exhaust gas stream is initially preheated for the purpose of raising the catalyst to a predetermined "lightoff" temperature. A small amount of a supplementary fuel is brought into heat exchange contact with portions of the filter interior or exterior to elevate this fuel to a suitable temperature. The heated supplementary fuel is then intermixed with the exhaust gas stream prior to the latter entering the catalyst section, thereby causing the fuel/gas mixture to react. Subsequent to initiation of the oxidation reaction, further preheating energy input to increase the exhaust gas to "lightoff" temperature, can be discontinued without affecting the combustible particle incineration rate.

REFERENCES:
patent: 2898202 (1959-08-01), Houdry
patent: 2946651 (1960-07-01), Houdry
patent: 3306035 (1967-02-01), Morrell
patent: 3503716 (1970-03-01), Berger
patent: 3557536 (1971-01-01), Ririe
patent: 4322387 (1982-03-01), Virk

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