Chemical sludge hollow blade dryer

The hollow blade dryer for chemical sludge has the advantages of drying chemical sludge, low energy consumption, low operating costs, and achieving automation of chemical sludge treatment. The drying speed is fast, with a daily processing capacity of 200-2000 tons of chemical sludge. It adopts a multi-layer three-dimensional design with good drying effect, which can dry chemical sludge with a moisture content of about 80% into particles with a moisture content of less than 35%.

Product Introduction

　　Chemical sludge hollow blade dryerThis product can indirectly heat or cool paste, granular, powdered, and slurry materials, and can complete unit operations such as drying, cooling, heating, sterilization, reaction, and low-temperature combustion. The special wedge-shaped stirring heat transfer blade in the equipment has high heat transfer efficiency and self-cleaning function of the heat transfer surface.

working principle

　　Chemical sludge hollow blade dryerWedge shaped hollow blades are densely arranged on the hollow shaft, and the heat medium flows through the blades through the hollow shaft. The heat transfer area within a unit effective volume is large, and the temperature of the heat medium ranges from -40 ℃ to 320 ℃. It can be steam or liquid, such as hot water, thermal oil, etc. Indirect conduction heating does not carry away heat with air, 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 device body. The wedge-shaped blade heat transfer surface has self-cleaning function. The relative motion between the material particles and the wedge-shaped surface produces a scrubbing effect, which can wash away the attached material on the wedge-shaped surface and maintain a clean heat transfer surface during operation. The shell of the blade dryer is Ω - shaped, and generally two to four hollow mixing shafts are arranged inside the shell. The shell has sealed end caps and upper caps to prevent material dust leakage and fully exert its function.

The heat transfer medium flows through the shell jacket and hollow stirring shaft through the rotary joint. The hollow stirring shaft has different internal structures according to the type of heat medium to ensure the heat transfer effect of ******.

Product Application:

Petrochemical industry: polyolefin powder, polycarbonate resin, high and low density polyethylene, linear low density polyethylene, polyacetal particles, nylon 6, nylon 66, nylon 12, acetate fiber, polyphenylene sulfide, propylene based resin, polypropylene, engineering plastics, polyvinyl chloride, polystyrene, polyester, polyoxymethylene, styrene acrylonitrile copolymer, ethylene propylene copolymer.

Environmental protection industry: sludge, electroplating wastewater sludge, boiler ash, sugar factory waste, pharmaceutical factory waste, monosodium glutamate factory waste, coal ash.

Feed industry: soy sauce residue, bone based feed, distiller's grains, food scraps, apple pomace, orange peel, soybean meal, chicken bone feed, fish meal, feed additives, and biological sludge.

Food industry: starch, cocoa beans, corn kernels, salt, modified starch, pharmaceuticals.

Chemical industry: Soda ash, nitrogen phosphorus potassium compound fertilizer, kaolin, bentonite, white carbon black, carbon black, phosphogypsum, calcium sulfate, calcium nitrate, magnesium carbonate, calcium carbonate, molecular sieve, dye, saponin.

Product Features:

Large heat transfer area, compact structure, and small footprint.

The thermal energy utilization rate is high, the energy consumption is low, and the loading capacity can reach 70-80% of the cylinder volume. Due to indirect heating, there is no large amount of air carrying away heat. The outer wall of the dryer is also equipped with insulation layer, and only 1.2kg of water vapor is needed to evaporate 1kg of water.

Wedge shaped blades have self-cleaning ability, which can improve the heat transfer effect of the blades.

The material has a wide range of applicability, using different heat media to handle both thermosensitive materials and materials that require high temperature drying. Common media include steam, thermal oil, hot water, cooling water, etc. It can operate continuously or intermittently and can be applied in many fields.

Stable operation and uniform drying of the product. Due to the special expansion stirring effect of the wedge-shaped blade, the material is fully in contact with the heat transfer surface, resulting in a small temperature, humidity, and mixing gradient of the material in the axial range, ensuring the stability of the process.

Low operating costs, the device only requires one person for normal operation, low-speed mixing, and a reasonable structure. The wear and tear is small, and the maintenance cost is very low.

Technical Specifications:

Partial cases of blade dryer