EQUIPMENT FOR THE TREATMENT OF WET SOLIDS, ESPECIALLY PULPY MATERIALS BY HEATING, OR COOLING

摘要

The present invention provides an apparatus for the treatment, such as drying, freezing, crystallization of wet solids including slurries, suspensions, pulps and the like with heating or cooling. The apparatus comprises an apparatus for treatment of wet solids, especially pulpy organic materials comprising: a hollow treating body rotatable abort a horizontal axis; means for feeding the material to be treated into said treating body; means for discharging the treated material from said treating body; and means for controlling the temperature of said treating body, said treating body comprising: an annular treating drum centered on said horizontal axis and communicating thereat with the feeding means, said drum being formed with an axially flared peripheral wall, a first duet communicating with said drum at a location offset from said horizontal axis and having a first longitudinal axis forming an angle therewith; a second duct communicating with said first duet at said horizontal axis and having a second longitudinal axis forming an angle therewith, a third duct communicating with said second duct at a location offset from said horizontal axis and having a third longitudinal axis forming an angle therewith, and a fourth duct communicating with said third duct at said horizontal axis and having a fourth longitudinal axis forming an angle therewith, said fourth duct having an outlet centered on said horizontal axis and communicating with the discharge means. Advantages of the apparatus include the large specific heat transfer surface, favourable calorific efficiency, small space requirement, relatively low investment and running costs and an extremely wide range of applicability.