Patent ID: 6830001
Filing Date: 2004-12-14
Classification: F23G,F23L

Abstract:
A pyrolysis furnace having:(a) a physical enclosure operating at negative chamber pressure to reclaim metal parts contaminated with combustible organic materials, (b) pressure sensing means disposed within said enclosure to monitor said negative chamber pressure operating conditions, (c) a first adjustable heating rate gas burner to directly heat air ducted into said enclosure, said first gas burner having a tubular extension physically connected to its flame end to combine radiant heating with convection heating within said enclosure during contaminant combustion, (d) a supplemental combustion chamber in open communication with said enclosure and vented to the atmosphere containing a second auxiliary gas burner, (e) single temperature sensing means disposed within said enclosure, (f) water spray means responsive to said temperature sensing means for operative cooperation with said first adjustable heating rate gas burner to regulate operating temperatures within said enclosure in accordance with a preselected heating schedule, and (g) control means including programmable temperature control means to maintain continuous operation of said first adjustable heating rate gas burner with (i) a normal full supply of fuel necessary to maintain full contaminant combustion during a major portion of the pyrolysis cycle, and (ii) a diminished supply of fuel sufficient to maintain fuel-starved combustion during the final portion of the pyrolysis cycle in the presence of excess oxygen.