B - Operations – Transporting – 01 – D
Patent
B - Operations, Transporting
01
D
B01D 1/28 (2006.01) B01D 1/22 (2006.01) B01D 1/24 (2006.01) C02F 1/04 (2006.01) F26B 3/20 (2006.01) F26B 5/04 (2006.01) F26B 23/00 (2006.01)
Patent
CA 2091509
11 ABSTRACT The invention relates to a device for drying and/or concentrating sludges composed primarily of water, sand or similar inorganic solids and non-volatile hydrocarbons, or of individual constituents of the sludge or of combinations of individual constituents of the sludge. The fields of application for these vaporizers/dryers are highly varied, as evaporation and drying constitute a basic principle of the processing technology (unit operation). Any substances which exhibit little or no delays in boiling point during concentration and/or evaporation, which do not form hard crystalline films, and which remain somewhat fluid or spreadable, are suitable. The device in accordance with the invention, which combines the principle of vapour compression with a mechanical spreading and scraping device, makes it possible to dry and/or evaporate sludges with a high proportion of very fine grains under economically acceptable conditions, because the evaporation heat produced by the vapour compression can be repeatedly reused.
Gossel Christian
Kirby Eades Gale Baker
Preussag Noell Wassertechnik Gmbh
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