Industrial Sludge Drying System

Industrial Sludge Drying System


In the field of industrial production, many enterprises will discharge sludge, and professional environmental protection companies will recycle these sludges. Wet sludge needs to be reduced to save transportation costs, and environmental protection companies need to utilize sludge resources. Therefore, the drying treatment of sludge is particularly important.


The sludge drying system can be widely used in activated sludge drying, wastewater sludge drying, petrochemical sludge drying, papermaking sludge drying, printing and dyeing sludge drying, leather sludge drying, Electroplating sludge, Municipal sludge, biological fermentation residue And other sludge and other kinds of residues and high-humidity non-material drying.

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Working Princple

sludge drying system process flow

Complete set must include burners or boilers, loading hoppers, finished product sorting, cyclone separators, heat exchangers, conveyors, moisture condensers, cooling and air purification equipment, dry sludge cooling, electrical equipment and automation, etc.

Disc heating plates are densely arranged on the hollow shaft, and the heat medium flows through the disc through the hollow shaft. The heat transfer area per unit of effective volume is large, and the temperature of the heat medium ranges from -40°C to 320°C, which can be water vapor or liquid type: such as hot water, heat transfer oil, etc. Indirect conduction heating, no air is carried to take away the heat, and the heat is used to heat the material. The heat loss is only the heat dissipation to the environment through the insulation layer of the BODy. The disc heat transfer surface has a self-cleaning function. The relative movement of the material particles and the disc surface produces a scrubbing effect, which can wash off the materials attached to the disc surface, so that a clean heat transfer surface is always maintained during operation.

The shell of the disc dryer is Ω type, and a seamless steel pipe is used as the main shaft in the shell. The shell has a sealed end cover and an upper cover to prevent material dust from leaking out and play a full role.


  • Low energy consumption of the disc dryer: Due to indirect heating, there is no large amount of air to carry away heat, and the outer wall of the dryer is provided with an insulating layer. For slurry materials, only 1.2kg of water vapor is needed to evaporate 1kg of water.

  • Low cost of the disc dryer system: It has a huge heat transfer surface per unit of effective volume, which shortens the drying time, reduces the size of the equipment, and greatly reduces the area of the drying system.

  • Wide range of processing materials: Different heat media can be used to process both heat-sensitive materials and materials that require high temperature treatment. Commonly used media are: water vapor, heat transfer oil, hot water, cooling water, etc.

  • It can be operated continuously or intermittently, and can be used in many fields. Like electroplating sludge, printing and dyeing sludge, chemical sludge, oily sludge, etc. It can also be used for fish meal drying, distiller's grain drying and kitchen waste drying, etc.

  • Low environmental pollution: no carry-on air is used, and there is little dust material entrainment. The evaporation of the material solvent is very small, which is easy to handle. Closed-circuit circulation can be used for polluted materials or conditions that require solvent recovery.

  • Low operating cost: hide all welds. Low wear and tear, low maintenance costs.

  • Stable operation: Because the disc is used as the heating conduction medium, the material particles are fully contacted with the heat transfer surface. In the axial range, the temperature, humidity and mixing degree gradient of the material is small, thus ensuring the stability of the process.