The vacuum disc continuous dryer designed and produced by our company is an improved and innovative energy-saving continuous drying equipment based on the absorption of domestic and foreign technology. Its special structure and working principle determine that it has high thermal efficiency, low energy consumption, small footprint, simple configuration, convenient operation and control. Good operating environment and other characteristics. Widely used in chemical, pharmaceutical, pesticide, feed, new materials and other industries of product drying operations.
Asphalt is a black brown complex mixture composed of hydrocarbons of different molecular weights and their non-metallic derivatives. It is a kind of organic liquid with high viscosity. It is liquid with black surface and soluble in carbon disulfide. Asphalt is a kind of waterproof, moisture-proof and anticorrosive organic cementing material. Asphalt can be mainly divided into coal tar pitch, petroleum asphalt and natural asphalt three kinds: coal tar pitch is a by-product of coking. Petroleum bitumen is the residue after distillation of crude oil. Natural asphalt is stored underground, and some form mineral layers or accumulate on the surface of the earth's crust. Asphalt is mainly used in coatings, plastics, rubber and other industries as well as paving roads.
The wet material containing solvent is continuously added to the main machine feeding hopper through the spiral feeder, and the material is continuously added to the drying disc on the upper layer of the dryer under the action of the stirring motor. The rake arm with the rake blade does rotating motion to make the rake blade continuously turn over the material, so that the material fully absorbs heat. The material flows through the surface of the drying disc along the exponential helix, and the material on the small drying disc is transferred to the outer edge. And the outer edge of the large drying tray falls below the outer edge, the material on the large drying tray moves inward and falls into the lower small drying tray from the middle blanking port, the size of the drying tray is alternately arranged up and down, the material can continuously flow through the whole dryer, and the heating medium heat conduction oil is passed into the hollow drying tray. The heating medium enters the drying pan surface from one end of the drying pan and is exported from the other end. The dried material falls to the cooling bottom of the shell from the drying disc of the latter layer, and is transferred to the discharge port by the rake blade and discharged into the bottom discharge spiral, and discharged out of the machine through the buffer tank. The wet solvent evaporates from the material and escapes after vaporization, and is drawn out after settlement by the buffer tank located at the top. The solvent is condensed into the buffer tank by the condenser for recovery, and the wet air is finally drained.
