In-line dryer

spiral

DESCRIPTION Three-return dryer is an improved high-efficiency energy-saving product based on single-cylinder rotary dryer.Through application in many enterprises and industries, good results have been achieved. Three-return dryer is an improved high-efficiency energy-saving product.Through application in many enterprises and industries, good results have been achieved. It improves the internal structure of the original single-cylinder product, increases the pre-drying of the wet material before entering the dryer and prolongs the drying time of the wet material, plus sealing, moisture preservation and reasonable supporting measures, so that the production capacity is increased by 50-80% compared with the original product, the evaporation intensity per unit volume can reach 120-180kg/m3, and the standard coal consumption is only 6-8 kg/t.Its technology is advanced, its operating parameters are reasonable, and its operation is simple and feasible. Working Principle The material enters the inner layer of the rotary drum from the feeding device to realize downstream drying. The material is continuously picked up and scattered under the papermaking plate of the inner layer to realize heat exchange in a spiral traveling mode. The material moves to the other end of the inner layer to enter the middle layer for countercurrent drying. The material is continuously and repeatedly lifted in the middle layer to realize a traveling mode of advancing in two steps and retreating in one step. The material in the middle layer not only fully absorbs the heat emitted by the inner layer drum, but also absorbs the heat of the middle layer drum,