KILN TYPE DRYER USING MECHANICAL VAPOR RECOMPRESSOR

摘要

PURPOSE: A kiln type drier using a steam compressor is provided to collect/use all of evaporation latent heat by drying a solid and to promote steam enthalpy by driving a steam turbine without additional power supply. CONSTITUTION: In a kiln type drier, a solid is put into a hopper by a crane(25) and then into a kiln body(1) by a material injector(22) via a rotary valve(5). The solid is dried by heat transfer pipes(16,17) of the kiln body, and evaporated steam therefrom is discharged to a steam discharge portion. The steam loses dispersing dust via a filter(3) and flows into a steam compressor(2). The kiln body has the heat transfer pipes connected to steam header pipes(14) mounted at both sides. The solid is dried in the kiln body effectively by the heat transfer pipes. Herein, if the kiln body has a very large diameter, the heat transfer pipes are divided into four zones. The heat transfer pipes(17) connected toward a blade have the same rotational direction. The heat transfer pipes are dropped at the front end. Therefore, a large amount of solid is dried effectively.