| 摘要 |
PURPOSE: A multistage rotary drying apparatus with high energy efficiency is provided to improve energy efficiency for drying and to maximize evaporation effects about moisture, and to prevent sludge or material to be dried from sticking. CONSTITUTION: A multistage rotary drying apparatus with high energy efficiency dries the sludge by evaporating the moisture of the wet sludge by hot air(202) supplied by a burner(101). The wet sludge preheated is put into the draying apparatus. The moisture evaporation efficiency and energy efficiency are maximized by maintaining the internal temperature of the multistage rotary drying apparatus. The wet sludge is preheated to 100 degree Celsius. The wet sludge is transferred to the inside the drying apparatus. |
