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        Zhengzhou Dingli New Energy Equipment Co., Ltd.
        HOME > NEWS > Sludge dryer three drying process

        Sludge dryer three drying process

        Author: Dingli     Date: 2019-07-03  

          Sludge is the industrial waste generated during the production process of municipal sewage processing. Because sludge has many disadvantages such as high moisture content, high viscosity, high water holding capacity, and low calorific value. It is difficult to achieve industrial utilization. Sludge dryer is dedicated to drying sludge,can be widely used in activated sludge drying, sewage sludge drying, petrochemical sludge drying, paper sludge drying, printing and dyeing sludge drying, leather sludge drying, electroplating sludge drying, municipal sludge drying, biological fermentation sludge, and other high wet materials.

        sludge drying equipment

          Sludge dryer three drying process: paddle heating drying, solar drying, high-temperature wet oxidation drying. The details of the three dryers are as follows:

          Paddle heating drying: the drying process is the use of heating drying system to achieve drying, this process in the structure mainly including dryer, sludge feeder, auxiliary heat source, air supply system, heat recovery device, dust control, ash emission, control system and so on.

          Solar drying: solar energy is used to evaporate the dehydrated sludge, and 60~80% of the dried sludge can be obtained through evaporation, meanwhile, in the process of operation, the sludge can be turned over and tiled on the floor by using the stirring wheel, and the efficiency of evaporation can be improved by increasing the forced ventilation. In general, this solar drying process is simple in process design and low in investment and operation cost, which is more suitable for users who have low requirements for mud production and need long-term storage.

          High temperature wet oxidation drying: the sludge and pure oxygen are simultaneously introduced into the reaction vessel at the required temperature and pressure, pure oxygen oxidizes most organic matter at high temperatures and pressures without the use of a catalyst, a small portion of the remaining sludge can be dehydrated and dried mechanically to achieve the purpose of drying. This process is suitable for non-agricultural applications but can be reused as a building material.

          Dingli Company concentrating created a new generation of sludge rotary drum drying system, drying product moisture can be reduced less than 25%, it totals achieved the standard of sludge landfill and further incineration processing conditions. The technology of equipment gets mature enough, also it has a stable capacity of operation and very convenient to operate and maintain. Welcome to visit our company!

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