Drying and gas or vapor contact with solids – Apparatus – With means to treat gas or vapor
Patent
1985-09-12
1988-05-10
Schwartz, Larry I.
Drying and gas or vapor contact with solids
Apparatus
With means to treat gas or vapor
34 35, 34 73, 34 86, 34 92, 34210, 34216, F26B 304
Patent
active
047426233
ABSTRACT:
Referring to process and equipment for the indirect drying of sludge, especially for the drying of wastewater sludge, which may undergo previous mechanical dehydration and/or preheating, it is intended to provide a method that permits utilizing low-value energy for drying purposes while avoiding environmental nuisance. With reference to the process, the problem is solved by drying the sludge under vacuum which is produced by withdrawing the water vapor by means of an injection condenser, the equipment provided for solving the problem comprising a barometric condensor associated with a mechanical sludge dehydrator and at least one sludge drier for indirect drying with an hermetically closed sludge space, the gas dome of the sludge space being connected to the injection condenser through a line for withdrawal of the water vapor.
REFERENCES:
patent: 4347671 (1982-09-01), Dias et al.
patent: 4441437 (1984-04-01), Moskau
patent: 4497120 (1985-02-01), Laemmermann et al.
patent: 4523388 (1985-06-01), Cuel
patent: 4566204 (1986-01-01), Friesner et al.
Bassler Jurgen
Liebig Winfried
Meurer Peter
Muhlhaus Ludwig
Steuber Heinrich
Schwartz Larry I.
Uhde GmbH
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