| 摘要 |
FIELD: heating.SUBSTANCE: in a disperse material drying plant including a drying chamber with a steam jacket, supply and discharge air ducts, a gas-distributing grid, a built-in tube-in-tube heat exchanger and connection pipes for tangential supply of heat carrier, a new feature is that a cover plate of the drying chamber is provided with a guide perforated cone for gas suspensions and a connection pipe for supply of heat carrier to the upper part of the drying chamber, a recuperative heat exchanger is equipped with connection pipes of steam supply to inter-tube space and discharge of condensate, and ribs on its outer surface are located vertically in case of heat carrier supply under the gas-distributing grid and material drying in a fluidised bed or along a helical line in case of simultaneous axial and tangential injection of heat carrier to the drying chamber and material drying a vortex flow; under the heat exchanger a provision is made for a baffle plate to change direction of gas suspension downward flow; the plant is provided with a loading device including a screw and a disintegrator.EFFECT: improving quality of a ready-made product owing to intensifying a drying process and excluding material pelletisation; improving plant operating reliability.3 dwg |
