The paddle dryer is a mechanically agitated, indirect heat transfer device that adds or removes heat from a process mass. This device is commonly used for drying, heating, cooling, solvent recovery, and calcination processes in many industries.
This type of drying equipment has two parallel shafts with inter-leaved panels that rotate at a slow speed. The material is continuously fed into it, which gets agitated missed, and heated simultaneously.
Heat Transfer
Paddle dryers can dry, heat, cool, and process materials by indirect conduction heating. They can be used for grains, paste, granules, power, and other materials with moderate heat transfer.
The body of the paddle dryer contains two hollow shafts with interleaved paddles. These paddles rotate at a slow speed.
A heating medium such as steam or thermal fluid (hot oil) enters the rotary shafts. After it enters the trough, it is agitated and mixed near the paddles.
The special stirrer and material transferring paddles do mixing, stirring, and transferring of the material in the heated trough surface with high efficiency paddle dryer manufacturer and self-cleaning function. This makes the dryer efficient in a variety of applications including drying, cooling, heating, sterilizing, reacting, and combustion.
Vacuum
Vacuum drying is a common technique for converting powdered or granular products into dry and clean products. It is also a practical method of drying wet cake and slurries.
The vacuum inside the vessel decreases the pressure around the wet material to lower its boiling point and reduce water vapor or solvent vapor pressure, thereby lowering the vaporization point of these liquids. This allows the dehydration of wet products without generating excess moisture or condensing valuable organic solvents.
Industrial Fabricators offers world-class Rotary Vacuum Paddle Dryers (RVPD) to meet the needs of various industries. These dryers are specially designed to dry temperature-sensitive products that are susceptible to oxidation and volatile, as well as hazardous materials.
The RVPD consists of a cylindrical shell with a hollow shaft, jacket/limpet coils, and paddles. These paddles scrape the entire internal surface of the dryer and rotate the material. This ensures that there is no possibility of material staying in contact with the heated surface for prolonged periods.
Air Flow
We are the leading paddle dryer manufacturer. These dryers are used to obtain dry powder from wet cakes or solutions.
These dryers use steam/hot water as the heating medium in the jacket, hollow paddle & shaft. This system also includes a dust collector, condenser, and vacuum pump.
The heat transfer process is triggered by constant agitation, which triggers the heated rotating paddles and minimum clearance between scrapers and heated walls to provide efficient heat transfer from the wet feed to the dry state. This process gives rise to evaporation of solvent/moisture and converts the wet material dry, to the required proportion.
These dryers are mainly used for drying sludge or paste in the food, chemical, petrochemical, and dyes industries. The agitation provided by the paddles ensures that back-mixing is not necessary, which avoids the formation of sticky sludge and improves product quality.
Safety
Paddle dryers are a type of dryer that uses paddles or fins to mix and lift materials. This helps to evaporate moisture from the material and reduce its temperature, making it a safer option for drying heat-sensitive products.
A paddle dryer can be used to dry a variety of materials, including sludge and clay. They also work well for hygienic treatment of food waste and can be customized to suit specific needs.
The agitator of a paddle dryer is designed with zero friction planetary movements that avoid back mixing and ensure proper product distribution, as well as efficient operation. This system eliminates problems associated with conventional dryers, such as a lack of clearance between the agitator profile and chamber walls, which can lead to lumps or unevenly distributed products.
The agitator can be operated manually or automatically using a stop-and-swing program. This enables easy discharge of the process mass from the dryer, without requiring manual intervention.