LPG type is a kind of drying equipment for liquid of low temp. and high viscosity which is developed from many improvements in our company on the basis of absorbing technology at home and abroad. Its work principle is: cold air passes though filter and then enters heater. After being heated to the needed temperature, the air enters air distributor on top of spray tower, then hot air moves towards to tower bottom in spiral and even form. Feed liquid is sent by special pump to atomizer on the top of tower. Feed liquid is atomized into slight foggy drop and contact hot air in same direction, at the same time heat is exchanged and the moisture of feed liquid is gasified and evaporated quickly, the feed liquid is dried into finished product in very short time. Finished product is collected by cyclone separator and waste steam is discharged by induced fan.