Waste steam evaporation device using secondary steam treatment of dryer 1. Utility model patent number Second, an overview Adopting "four-effect, falling film, and pressure-reducing" evaporation system, the falling film evaporator adopts the patent technology of "three-level film", using the secondary steam of steam dryer and steam condensed water as the heat source, and setting the waste heat evaporator to dry again. Machine waste steam, the waste clear liquid is concentrated and evaporated, the thick slurry is sent to the dryer, and the condensed water is evaporated to the water treatment plant. The device is controlled by automatic program. The evaporation system does not need to replenish steam once. Third, the process flow chart:DDGS complete set First, the patent number National invention patent Second, an overview The distillers grains are produced by a full drying process, that is, dried distillers grains containing soluble solids are called DDGS (Distillers Dried Grains with Solubles). The device uses mechanical separation, steam drying, waste heat evaporation and weighing and packaging four units to turn waste materials that are seriously polluting the environment into treasures, and obtain high-protein feeds that are easy to store, easy to transport, and nutritious. It solves the environmental problems that restrict the development of enterprises, and at the same time brings considerable economic benefits. The device is controlled by automatic program. Third, the process flow chart