Rotary Vacuum Paddle Dryer
Rotary Vacuum Padel Dryer (RVPD) Manufactuer in Gujarat, India
We are leading manufacturer of a range of RVPDs for Pharmaceutical and Chemical industry. Using Rotary Vacuum Paddle Dryer or Paddle Dryer (RVPD) is the most-efficient way to obtain dry powder from press cake, filter cake/ centrifuge cake or solutions. This horizontal vacuum paddle dryer is efficiently designed to counter pressure created by temperature variations and vacuum prevailing in the various heated parts. It is a closed cylindrical vessel System in which hot water, steam or hot fluid can be used as a heating medium in the jacket, in the hollow Paddle and in the hollow shaft.
Working principle of Rotary Vacuum Paddle Dryer
Rotary Vacuum Paddle Dryer is horizontal, mechanically agitated vacuum dryer, which gives low temperature drying, mixing and breaking effects simultaneously. The apply of vacuum is to lower the boiling point of water or solvents contained in wet material to be dried.
RVPD consists of a jacketed cylindrical vessel and a hollow rotor fitted with double-walled discs to considerably increase heating surface. Heating medium, such as steam, hot water or hot thermal oil, is forced to circulate both inside the jacket and hollow rotor to form heating surface.
Wet material is gravity fed into the drying chamber via the infeed port with screw feeder, then vacuum and heat are applied to reach the evaporation point of water or solvents contained in wet material. Meanwhile, the disc rotor rotates in different directions to completely mix, move and break the wet material for fast and uniform heat transfer. Moisture evaporates rapidly and is extracted as vapor by the vacuum pump. Tubular condenser is installed to recover the evaporated moisture. The drying process can be batch or continuous operation.
Vacuum Paddle Dryer Advantage
Ideal for Temperature-sensitive materials.
Improve product quality due to low-temperature drying system
Almost 100 percent recovery of solvents.
Low energy consumption
Rotary Vacuum Dryer Operation Conditions
Vacuum: Up to even 0.6 torr
Heating Temperature: 20° to 300°C
Industrial Rotary Vacuum Paddle Dryer Capacity
Gross Capacity: From 100 Ltrs. To 25000 Ltrs.
Charging Capacity: 40 to 60% of Gross Capacity depending on the nature of the products
Use of Rotary Paddle Dryer
- RVPD Dryer is used in Chemical Industries like Stearates, Effluent treatment, Sealants, Agrochemicals, Solvents recycling, Slurry treatment, Resins, Polymers, Catalysts, Fibers, Composites, Cellulose, Additives, Waste water treatment., Evaporation, Pigments, Artificial marble, Minerals, Herbicides, Concentration, Graphite specialties, Special waste treatment, PVC additives Etc.
- RVPD Dryer is used in Pharmaceutical Industries like API, Cosmetics, Crystals, Food additives, Natural extracts, Pharmacy synthesis, Veterinary, Vitamins Etc.
- RVPD Dryer is used in Food Industries like Lyophilized, Animal extracts, Ferments, Additives, Cocoa powder, Natural Extracts, Colorants, Proteins Etc.
Benefits of RVPD
Suitable for Temperature-sensitive materials.
The efficiency is very high, 100% solvents recovery.
Very High Thermal Efficiency.
The operating costs are low compared to other types of dryers.
The Paddle Dryers are designed as per ASME Pressure Vessel Code.
Drive with Shaft-mounted Gearbox or Special skid- mounted design optimizes power consumption, reduces maintenance and keeps cost low.
Door opens fully for ease of operation and cleaning.
Other Features
Atmospheric to Full vacuum up to even 0.6 torr.
Heating Temperature: 20° to 300°C.
RVPDs starting from 100 Ltrs. To 30,000 Litres capacity.
Also Built as per cGMP norms for Sterile operation in Pharma.
The Paddle Dryer is also used for
Low temperature drying
Reaction: Used to change a material’s molecular and physical chemistry
Crystallization
Extraction of useful liquids
Recovery of solvents.
| Model | Gross Volume List |
Working Volume List |
A | B | C | D | E | HP | H.T.A M2 |
|---|---|---|---|---|---|---|---|---|---|
| RVPD-1 | 500 | 200 | 600 | 1600 | 2900 | 900 | 2300 | 5 | 3 |
| RVPD-2 | 1000 | 400 | 800 | 2180 | 3800 | 1100 | 3000 | 7.5 | 7.5 |
| RVPD-3 | 1500 | 600 | 915 | 2420 | 4500 | 1200 | 3200 | 10 | 9 |
| RVPD-4 | 2000 | 800 | 1000 | 2950 | 5000 | 1300 | 3400 | 15 | 10 |
| RVPD-5 | 2500 | 1000 | 1100 | 2950 | 5000 | 1400 | 3800 | 20 | 14 |
| RVPD-6 | 3000 | 1400 | 1200 | 3250 | 5400 | 1500 | 3900 | 20 | 17 |
| RVPD-7 | 4000 | 1600 | 1250 | 3600 | 5700 | 1600 | 4000 | 25/30 | 20 |
| RVPD-8 | 5000 | 2000 | 1350 | 3800 | 6000 | 1700 | 4200 | 25/30 | 25 |
| RVPD-9 | 7500 | 3000 | 1600 | 4300 | 6500 | 1900 | 4500 | 30/40 | 30 |
| RVPD-10 | 10000 | 4000 | 1700 | 4950 | 7500 | 2000 | 4900 | 40/60 | 38 |
HP = Power Required for Agitator Motor
H.T.A = Heating Surface Area (SQ. MTS)