Sludge treating process and apparatus

Details Sludge treating process and apparatus Sludge treating process and apparatus

1993-09-24

1995-12-12

Dawson, Robert A.

Liquid purification or separation

Processes

Separating

210770, 210768, 210805, 210180, 180224, 180238, 180346, F23G 504

Patent

active

054746868

ABSTRACT:
In a continuous process for drying a sludge composed of combustible material and water, the wet sludge is first mixed with a proportion of material which has been dried in the process and is then fed into a hot gas stream from a burner. The hot gas stream carries the mixture along and dries it, and a proportion is tapped off and mixed with the incoming wet sludge. A part of the remainder is fed, with supplementary fuel, if necessary, to the burner to create the hot gas stream. The rate of fuel supply is varied in dependence on a temperature of the hot gas stream when it exhausts from the mixture drying operation.

REFERENCES:
patent: 4901654 (1990-02-01), Albertson et al.
patent: 5069801 (1991-12-01), Girovich
patent: 5309849 (1994-05-01), Krebs

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