Double blade+disc continuous dryer equipment

The double blade dryer can indirectly heat or cool slurry, paste, granular, and powdered materials, and can complete unit operations such as drying, cooling, heating, sterilization, reaction, and calcination. 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, with a large heat transfer area per unit effective volume. The heat medium can be steam, hot water, thermal oil, etc; The heat transfer medium flows through the shell jacket and hollow stirring shaft through the rotary joint; Hollow mixing shafts have different internal structures depending on the type of heat medium to ensure optimal heat transfer efficiency. The shell of the blade dryer is W-shaped and generally has two to four hollow mixing shafts. The blade dryer is installed horizontally, and materials are added from one end and discharged from the other end, which can reduce backmixing and narrow the distribution of material residence time, which is beneficial for uniform drying of materials.

Product Features

① The blade dryer has high thermal efficiency: due to indirect heating, it does not carry a large amount of air to take away heat, and the heat utilization rate can reach 80-90%.

② The cost of the blade dryer system is low: it has a huge heat transfer surface per unit effective volume, which shortens processing time and reduces equipment size. This greatly reduces the building area and space.

③ Wide range of material processing: using different heat media, it can handle both thermosensitive materials and materials that require high-temperature treatment. Common media include steam, thermal oil, hot water, cooling water, etc. It can be operated continuously or intermittently, and has a wide range of applications.

④ Low environmental pollution: No use of portable air, minimal dust and material entrainment. The evaporation rate of material solvents is very small, and closed-loop circulation can be used for contaminated materials or working conditions that require solvent recovery.

⑤ Low operating costs: low-speed mixing and reasonable structure. The wear and tear is small, and the maintenance cost is very low.

⑥ Stable operation: Due to the special compression expansion stirring effect of the wedge-shaped blade, the material particles are fully in contact with the heat transfer surface. In the axial range, the temperature, humidity, and mixing gradient of the material are very small, thereby ensuring the stability of the process.

⑦ Due to the self-cleaning effect of the blade, it can handle viscous and paste like materials.

Application field

① 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, engineering plastics, polyvinyl chloride, polyvinyl alcohol, styrene, polypropylene, polyester, polyoxymethylene, styrene acrylonitrile copolymer, ethylene propylene copolymer.

② Environmental protection industry: electroplating wastewater sludge, boiler ash, pharmaceutical factory waste, sugar factory waste, monosodium glutamate factory waste, coal ash.

③ 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.

④ Food industry: starch, cocoa beans, corn kernels, salt, modified starch, pharmaceuticals.

⑤ Chemical industry: Soda ash, nitrogen phosphorus potassium compound fertilizer, kaolin, bentonite, white carbon black, carbon black, phosphogypsum, sodium fluoride oxide, calcium nitrate, magnesium carbonate, sodium cyanide, aluminum hydroxide, barium sulfate, calcium sulfate, calcium carbonate, dyes, molecular sieves, saponins.