Cleaning and liquid contact with solids – Processes – Including regeneration – purification – recovery or separation...
Patent
1984-12-18
1985-10-22
Caroff, Marc L.
Cleaning and liquid contact with solids
Processes
Including regeneration, purification, recovery or separation...
134 18, 134 19, 134 251, 134 38, 134 40, 266901, B08B 700
Patent
active
045486514
ABSTRACT:
Scrap metal contaminated with hydrocarbon combustibles is reclaimed by vaporizing the hydrocarbon combustibles contaminating the metal in a kiln so as to produce partially unburned fumes in said kiln. The fumes are separated from the metal as the metal is discharged from the kiln, and the separated fumes are then transported to a heat generating means having a burner means secured therein. The fumes are incinerated in the heat generating means by the flame of said burner means so as to provide hot gas which is recirculated to the kiln for purposes of conducting the aforementioned vaporization step. The firing rate of the burner means is regulated to maintain the recirculating hot gas close to a predetermined temperature, and the air to fuel ratio supplied to the burner means is varied to maintain the concentration of oxygen in the recirculating hot gas close to a predetermined level.
REFERENCES:
patent: 3627289 (1971-12-01), Erman
patent: 3645516 (1972-02-01), Turpin et al.
patent: 3839016 (1974-10-01), Rawlings
patent: 3839086 (1974-10-01), Larson
patent: 4252300 (1981-02-01), Herder
patent: 4264060 (1981-04-01), Twyman
"A Preheating, Delacquering and Drying Process for Aluminum Scrap" by Noel H. Twyman and Lawrence E. Lannon of the Apros Corporation, Aluminum Association's Aluminum Industry Energy Conservation Workshop VI Papers, Nov. 9-10, 1981, pp. 157-165.
"Scrap Preheating Technology with Rotary Kiln Process" by Noel H. Twyman, Aluminum Association's Aluminum Industry Energy Conservation Workshop IV Papers, Jun. 19-20, 1979, pp. 1-15.
Apros Automated Production Systems Corporation brochure "Process Equipment and Systems for the Aluminum Recycling Industry", pp. 1, 2 and 4-7.
Aluminum Company of America
Caroff Marc L.
Smith Brian D.
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