METHOD FOR DRYING HUMID POLYMER POWDER AND DEVICE SUITABLE FOR SAID METHOD Russian patent published in 2016 - IPC F26B3/84 F26B21/04 F26B17/10 F26B23/10 F26B20/00 

FIELD: chemistry.

SUBSTANCE: invention relates to a device, as well as to a method of drying humid polymer powder. Device (1) for drying polymer powders comprises inlet (2) and outlet (3) for polymer powder, heat element (5) located in interior space (4), pipeline (7) for a heated gas (6a) for drying polymer powder, which open into interior space (4), wherein pipeline (7) is connected to heat exchanger (9) for heating gas (6), heat exchanger (9) is connected to a device for preparation of 1,2-dichloroethane (15) and/or for preparation of vinyl chloride from 1,2-dichloroethane so that thermal energy from device for preparation of 1,2-dichloroethane (15) and/or for preparation of vinyl chloride is used for heating gas (6). Method of drying polymer powders comprises steps for treatment of a polymer powder with heated gas (6a) in a drying apparatus (1), introduction of heated gas (6a) through pipeline (7) into interior space (4) of drying apparatus (1), heating gas (6) in heat exchanger (9) to produce heated gas (6a), and heating heat exchanger (9) with hot fluid (5a, 10, 19) which has been heated by means of thermal energy which originates from device for the preparation of 1,2-dichloroethane (15) and/or for preparation of vinyl chloride from 1,2-dichloroethane.

EFFECT: said device and method are suitable for drying humid PVC powder and reduces power consumption.

12 cl, 3 dwg