Contact adsorption drying grain objects
    Particulate material in contact with dry sorbent to form a relatively low humidity environment conducive to moisture from the material to the exterior.
    Materials in order to make more uniform humidity environment , and drying the particles of the adsorbent material according to a certain weight ratio of mixing is necessary. After mixing, standing for some time , the material can achieve the required moisture content , and then separating the adsorbent material . For example , Stunon other studies using bentonite as an adsorbent drying grain situation. YamaBuchi and dried with silica gel KawaMki explores the dynamics of rice , and the visual of the fissuring rate . When the initial silica mass ratio of rice is 0.8 , the ambient temperature of 278K and 296K of fissuring firmly lower at 318K fissuring prison when more than 5% . In addition, they also made silicone and rice layered air-drying experiments , the moisture content of rice under unevenly distributed .
    Particle contact with the adsorbent of the adsorption drying particulate material continuous operating means , a device implemented in three operations: touch dry, adsorption drying and the adsorbent regeneration. The device consists of three coaxial cones composed of the heating chamber and the central cone axis parallel to the driven shaft and the fixed shaft support . Fixed shaft made ​​of a hollow cylindrical body , a burner located in the heating chamber longitudinal axis L. Gas burner flame generated , extending to the heating chamber , the heating chamber through direct evaporation of the water adsorbent particles . Meanwhile , the wall of the drawing board staggered shed adsorbent particles , accelerated heating and evaporation.
    Wet material into the dryer , the outlet end of the heating chamber of the thermal desorption remove particles mixed , and through the arrangement of the heating chamber between the drum and the outer cone continuous conveyor screw propeller . Report into the unit and the heater coil to 100-160 r / min with rotation speed , causing the material - the adsorbent is completely mixed and transported along the drying section . Mixture of particles in the transport process , the moisture is removed by contacting adsorption drying ; the sensible heat adsorbent particles evaporation heat strengthening . Placement of the outer end of the drum screen, allowing the adsorbent particles pass through , the separation achieved by the tapered annular collector to collect , and then through the annular ramp profile , the particles back into the chute .
    Although the adsorbent particles in the heating chamber is relatively short residence time (15-20s or so ) , with flame and smoke Tinan direct contact with the particle temperature of about 100-200 ℃. This not only regenerate the adsorbent , and the adsorbent heated to the desired temperature. Adsorbent update rate of the adsorbent - the mass ratio of control of particulate material , in addition to the geometry of the dryer , but also into the wet material quantity, the system of the adsorbent mass and speed of the dryer .