Product Introduction:

This product can be used for paste, granule, powderpaddleIndirect heating or cooling of materials can complete unit operations such as drying, cooling, heating, sterilization, reaction, and low-temperature combustion. Special wedge-shaped stirring heat transfer in equipmentpaddleLeaves have high heat transfer efficiency and self-cleaning function of heat transfer surfaces.

Working principle:

Wedge shaped hollow shafts are densely arranged on the hollow shaftpaddleLeaves, heat medium flows through a hollow shaftpaddleYe. The heat transfer area within a unit effective volume is large, and the temperature of the heat medium ranges from-From 40 ℃ to 320 ℃, it can be in the form of water vapor 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. Wedge shapedpaddleThe leaf 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.paddleThe shell of the leaf dryer isΩ - shaped, usually arranged with two to four hollow mixing shafts 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 optimal heat transfer effect.

Performance characteristics:

◎paddleLow energy consumption of leaf dryer: Due to indirect heating, there is no significant amount of air carried away to remove heat, and the outer wall of the dryer is also equipped with an insulation layerpaddleShape material, evaporation1kg of water only requires 1.2kg of steam.

◎paddleLow cost of leaf dryer system: Having a huge heat transfer surface within a unit of effective volume shortens processing time and reduces equipment size. This greatly reduces the building area and space.

◎ 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 operate continuously or intermittently and can be applied in many fields.

Low environmental pollution: No use of portable air, minimal dust and material entrainment. The solvent evaporation of the material is very small, making it easy to handle. For materials that are contaminated or require solvent recovery, closed-loop circulation can be used.

Low operating costs: The structure. The wear and tear is small, and the maintenance cost is very low.

◎ Stable operation: Due to the wedge-shaped designpaddleSpecial compression of leaves--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.

Adapt to materials:

paddleThe leaf dryer has been successfully used in fields such as food, chemical, petrochemical, dye, and industrial sludge. The characteristics of heat transfer, cooling, and stirring of the equipment enable it to perform the following unit operations: combustion(Low temperature), cooling, drying (solvent recovery), heating (melting), reaction, and sterilization. stirpaddleLeaves are also heat transfer surfaces, which increase the heat transfer area per unit effective volume and shorten the processing time. Wedge shapedpaddleThe heat transfer surface of the blade also has self-cleaning function. compress--The expansion stirring function ensures even mixing of materials. The material moves in a 'piston flow' along the axial direction, and within the axial range, the temperature, humidity, and mixing gradient of the material are very small. Using thermal oil as the heat mediumpaddleThe leaf dryer can complete low-temperature combustion work. For example: calcium sulfate dihydrate(Ca2SO4 · 2H2O) is burned and converted into calcium sulfate hemihydrate (Ca2SO4 · 1/22H2O). Sodium bicarbonate (NaHCO3) is converted into pure alkali (Na2HCO3) through calcination. Cooling media such as water, cooling salt water, etc. can be used for cooling. For example: used in the soda ash industrypaddleThe leaf type cooling alkali machine replaces the old-fashioned air-cooled cooling alkali machine, saving energy and exhaust gas treatment equipment, and reducing operating costs. dryThe main function of the equipment 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.paddleLeaf 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.