Procedure for the recovery and/or cleaning of carbon formed as a

Details Procedure for the recovery and/or cleaning of carbon formed as a Procedure for the recovery and/or cleaning of carbon formed as a

1995-02-02

1998-03-03

Lewis, Michael

Hazardous or toxic waste destruction or containment

Containment

Solidification, vitrification, or cementation

423461, 423445R, 502419, C10B 4700

Patent

active

057237174

ABSTRACT:
A procedure for the recovery and/or cleaning of carbon formed as a result of thermal processes. This carbon is present with supernatant C in equilibrium with CO.sub.2 and CO (Boudouard equilibrium) after being transformed into CO.sub.2 with oxygen in a synthesis gas at an elevated temperature. In so doing, the synthesis gas is brought to a temperature higher than 800.degree. and then, using H.sub.2 O, abruptly cooled to a temperature less than 100.degree. C., the carbon-water-dispersion is also used as an adsorption agent and the contaminants and residue are bound together in the waste gases, the carbon-water-dispersion is concentrated, the carbon sludge forming at the elevated temperature, preferably greater than 1200.degree. C., is dried. During the drying process the contaminants or contaminant components are vaporized from the carbon sludge and then condensed and the dried carbon is returned to the initial combustion process.

REFERENCES:
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patent: 4804390 (1989-02-01), Lloyd et al.
patent: 5110359 (1992-05-01), Orac et al.
patent: 5346679 (1994-09-01), Osaki et al.
patent: 5399372 (1995-03-01), Grimes et al.
Rompps Chemie-Lixikon, Franckh'sche Verlagshandlung Stuttgart, 1972, p. 414 no month.
Rompps Chemie-Lexikon, Franckh'sche Verlagshandlung Stuttgart, 1975, p. 3423 no month.

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