Method and apparatus for reducing the circulation of salts particularly in cement kilns
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Sep 14, 1993
Grant Date -
N/A
app pub date -
Mar 4, 1991
filing date -
Sep 2, 1988
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A method and arrangement for reducing the circulation of salts in a cement kiln in which a raw meal heat exchanger feeds material to the kiln. A partial gas stream charged with harmful substances is removed from the kiln through a bypass conduit. The partial gas stream is subjected to a multi-stage process of removing dust. This process includes passing the partial gas stream through a first dust separating stage, followed by returning an uncooled dust component of the partial gas stream to the kiln and cooling the remaining portion of the partial gas stream. The cooled remaining portion of the partial gas stream is subjected to a further dust separating process, and thereafter passed through a further bypass conduit to a location of the raw meal exchanger, which location has a temperature at approximately the same level as the temperature of the remaining portion of the partial gas stream entering the further bypass conduit following the further dust separating process.
First Claim
Other Claims data not available