SXG series rotary flash dryer

Overview

The SXG series rotary flash dryer was developed by the company based on the introduction and absorption of foreign technology and is described as having advanced technology, reasonable design, compact structure, wide applicability, high production capacity, good product quality, high efficiency and energy saving. The machine can dry, crush and screen in one device and is stated to eliminate environmental pollution and achieve international performance. The flash dryer uses original bearing induction cooling (water cooling) designed to be connected with an oil pump to lubricate and cool the bearings, and its sealing device is described as having excellent performance. The main shaft design adopts a semi ring type and the motor uses a speed regulating motor, with smooth transmission, low noise, and a service life 10 times that of similar products. Hot air enters the mixing and crushing drying chamber from the bottom of the dryer at a suitable spraying speed through the inlet pipe, producing strong shear, blowing, and rotating effects that atomize material; a bottom agitator mechanically crushes larger, wetter particle clusters while smaller, lower-moisture particles are carried upward by rotating airflow for further drying. The drying process is divided into four stages—crushing, gas-solid mixing, drying, and particle size classification—and the unit is equipped with devices intended to increase airflow velocity and enhance gas-solid mixing. Equipment features listed include multiple selectable feeding devices for continuous stable feeding, a special bottom cooling device to prevent material deterioration in the high-temperature zone, a special pneumatic sealing device and bearing cooling device to extend transmission life, a special air distribution device to reduce equipment resistance and provide processing air volume, and a drying chamber equipped with grading rings and swirl blades. The evaporation rate of water is noted to be calculated based on an inlet air temperature of 200 ℃ and an outlet air temperature of 80 ℃, and the installed capacity is described as basic data that can be changed according to the physical and chemical properties of the material; land area is arranged according to the actual situation and table data are for reference. Application scope explicitly lists inorganic substances such as boric acid, calcium carbonate, hydroxides, copper sulfate, iron oxide, barium carbonate, antimony trioxide, various metal hydroxides, various heavy metal salts, and synthetic cryolite. Listed organic compounds include Atrazine (pesticide insecticide), cadmium laurate, benzoic acid, fungicide, sodium oxalate, and cellulose acetate. Other supported materials specified are ceramics (kaolin, silica, clay), dyes (anthraquinone, black iron oxide, indigo pigment, butyric acid, titanium hydroxide, zinc sulfide, and various azo dye intermediates), and food items (soy protein, gelatinous starch, distiller's grains, wheat sugar, wheat starch). Processing materials and characteristics are indicated to be based on Type 6 flash evaporation.