Dingli Brand three layer single channel food residue rotary drum dryer(patent number:ZL2009 2 0089749.2). The equipment has the advantages of large production, high efficiency, energy saving and small floor area. It can used together with the clean hot air furnace and suitable for drying high moisture materials such as food residue and so on. The moisture can be dried quickly from 65-75% to 14-18% at a time, and the dry food residue completely retains its original nutritional components, with bright colors and delicate scent. Comparing with the traditional dryer, the energy consumption can be reduced 30-50%, which can save energy and reduce the operating cost.The dryer is suitable for food residue, oat straw, wheat straw, rye straw, straw, sorghum straw, corn straw, potato vines, bean stalks,etc. Dingli company optimizes the drying technology and equipment selection and configuration service according to the characteristics of each material, the size of production, the quality requirements, the application demand, the cost control, the automatic degree, the field working condition, the investment quota and so on.