Calcium chloride sludge hollow blade dryer

Published on February 25th, 2016

Calcium chloride sludge dryer, calcium chloride sludge dryer, calcium chloride sludge dryer, calcium chloride sludge drying equipment, calcium chloride sludge hollow blade dryer. Changzhou Xinke Drying Equipment Co., Ltd. www.xkdry.com

Calcium chloride sludge hollow blade dryerprinciple：

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 ℃ 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 W-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 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 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.

Features: # Paddle dryer

●paddle dryerLow energy consumption: Due to indirect heating, there is no large amount of air carried away to remove heat. The outer wall of the dryer is also equipped with an insulation layer. For slurry materials, only 1.22kg of water vapor is needed to evaporate 1kg of water.
The blade dryer system has low cost: 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.
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 device operates normally with only 1-2 people per day. Low speed stirring and reasonable structure. The wear and tear is small, and the maintenance cost is very low.

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.

Main structure

The paddle type dryer is a horizontal stirring type dryer mainly based on heat conduction. Its main structure is a W-shaped shell with a jacket, which is equipped with paired hollow low-speed rotating hollow shafts. Several stirring hollow blades are welded to the shafts, and both the jacket and the hollow stirring blades (Figure 1) are connected to a heat carrier. The two heating surfaces heat the material at the same time. Therefore, this type of dryer has a more prominent heat transfer rate than a general conduction type dryer. As needed, this type of dryer can be designed as a dual axis or multi axis dryer. Hot air is usually sent in from the middle of the dryer, passes through the surface of the material layer in a stirred state, and is discharged from the other side. The interior of the dual axis blade dryer is shown in Figure 2. The heating medium can be steam, hot water, or high-temperature thermal oil.

The paddle 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: calcination (low temperature), cooling, drying (solvent recovery), heating (melting), reaction, and sterilization. The stirring 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. Compression expansion mixing function ensures uniform mixing of materials

Changzhou Xinke Drying Equipment Co., Ltd. specializes in productionHollow paddle dryer, sludge dryer, disc dryer, disc dryer, vibrating fluidized bed dryer, airflow dryer, boiling dryer, flash dryer, belt dryer, spray dryerWww.xkdry.com