Process for drying sewage sludge or sludges of similar consistency
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United States of America Patent
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-
Jul 11, 2000
Grant Date -
N/A
app pub date -
Jul 9, 1998
filing date -
Jan 23, 1996
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
In a process for drying sewage sludge or sludges of similar consistency, use is made of a device (13) in which vapors arising during contact drying are introduced to at least one compression stage. This stage compresses the vapors to a higher pressure and impurities are separated therefrom. The cleaned and compressed vapors are introduced into the device (13) for contact drying as a heating medium. In this manner, the energy consumed inside the operated installation is used more efficiently to dry the sewage sludge and a considerably improved energy balance is thereby achieved.
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