For factory sludge and domestic sludge, in the past, landfill was generally adopted for treatment, and in recent years, people began to use incineration, which is convenient for us to effectively obtain heat energy from waste, reduce environmental protection costs and do not cause secondary pollution. In addition, the sludge can also be processed as fertilizer. However, the above two treatment methods need to dry the sludge first. Our company in the domestic and international drying industry on the basis of the development of a new type of sludge dryer. Using double drum, steam room wall heating, compact structure, high thermal efficiency, low energy consumption, widely used in sludge treatment and chemical industry.