Process for the thermal treatment of sludges

Details Process for the thermal treatment of sludges Process for the thermal treatment of sludges

1987-11-03

1988-09-06

Wyse, Tom

Liquid purification or separation

Processes

Chemical treatment

210771, 210774, C02F 1106

Patent

active

047691573

ABSTRACT:
A process for the thermal treatment of carbon-containing substances, in particular of sludges which, after mechanical indirect pre-drying, are subjected to direct drying by means of drying gas is disclosed. Object of the invention is to simplify the elimination of the noxious matter contained in the sewage sludge, to allow for energy recovery, and to improve the efficiency of the entire process. The problem is solved by the fact that the drying gas used for direct sludge drying is recovered by partial oxidation of the sludge subjected to direct drying.

REFERENCES:
patent: 3591448 (1971-07-01), Hess et al.
patent: 4010098 (1977-03-01), Fassell
patent: 4050390 (1977-09-01), Hora et al.
patent: 4132640 (1979-01-01), Filzmoser
patent: 4321150 (1982-03-01), McMullen
patent: 4330411 (1982-05-01), Florin et al.
patent: 4441437 (1984-04-01), Moskau
patent: 4636318 (1987-01-01), Baker

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