Hollow blade dryer--Application
Hollow blade dryerIt has been successfully used in fields such as food, chemical, petrochemical, dye, industrial sludge, etc. The characteristics of heat transfer, cooling, and stirring of the equipment enable it to perform the following unit operations: calcination (low temperature), cooling, drying (solvent recovery), heating (melting), reaction, and sterilization. The mixing blade is also a heat transfer surface, which increases the heat transfer area per unit effective volume and shortens the processing time. The wedge-shaped blade heat transfer surface also has self-cleaning function. compress--The expansion stirring function ensures even mixing of materials. The material is formed along the axial direction'plug flow'In the axial range of motion, the temperature, humidity, and mixing gradient of the material are very small. Using thermal oil as the heat medium, the blade dryer can complete low-temperature calcination work. For example: calcium sulfate dihydrate（Ca2SO4·2H2O）Calcination conversion to hemihydrate calcium sulfate（Ca2SO4·1/2H2O）. Sodium bicarbonate（NaHCO3）Converted into pure alkali through calcination（Na2CO3）Wait. Cooling media such as water, cooling salt water, etc. can be used for cooling. For example, the blade type cooling alkali machine used in the soda ash industry replaces the old-fashioned air-cooled cooling alkali machine, saving energy and exhaust gas treatment equipment, and reducing operating costs. dry,The main function of the device is to not use hot air, so that solvent recovery, energy consumption, and environmental control are in an ideal state that is easy to handle. It is particularly suitable for solvents that need to be recycled, flammable and easily oxidizable heat sensitive materials. It has been widely used in the fine chemical, petrochemical, and dye industries. The uniformity of temperature, humidity, and mixing degree within the axial range allows the equipment to be used for heating or melting, or for some solid material reactions. It has been successfully used in the compound fertilizer and modified starch industries. A blade dryer can be used to sterilize food and flour. The large heating area within the effective volume of the unit quickly heats the material to the sterilization temperature, avoiding prolonged heating and changing the quality of the material.

Hollow blade dryer--product overview
This 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 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.
Wedge 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℃arrive320℃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 isΩType, usually 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 collect material solvent vapor. Set up a stopper at the discharge port to ensure the height of the material level, so that the heat transfer surface is covered by the material and fully functional. 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 best heat transfer effect.

Hollow blade dryer--Product Features
1、 Vacuum dryerLow energy consumption: Due to indirect heating, there is no significant amount of air carried away to remove heat, The outer wall of the dryer is also set Insulation layer, for slurry materials, evaporation1kgshuiJust need1.2kgShui steam.
2、 Vacuum dryerLow system cost: With a huge heat transfer surface per unit effective volume Shortened processing time and reduced 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 other materials Materials that require high-temperature treatment. Common media include steam, thermal oil, hot water, cooling water, etc. It can operate continuously or intermittently and can be applied in many fields.
4Low environmental pollution: No use of portable air, minimal dust and material entrainment. Material solvent evaporation rate Very small, easy to handle. For materials that are contaminated or require solvent recovery, closed-loop circulation can be used.
5Low operating costs: The device operates normally and only1hour/day·People. Low speed mixing and reasonable Structure. The wear and tear is small, and the maintenance cost is very low.
6Stable operation: Due to the special compression of wedge-shaped blades--The expansion stirring effect ensures that 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.