OME Engineers and Fabricators

Rotary Vacuum Paddle Dryer (RVPD)

The Rotary Vacuum Paddle Dryer (RVPD) is a cylindrical vessel with Limpet/jacket for cooling or heating and a central agitator shaft having designed by scrapper blades. Scrape the entire internal surface of the dryer and continuously move and rotate in the shell. Rotary Vacuum Paddle Dryer (RVPD) offers a simple, clean and effective solution for vacuum drying at low temperature, Reaction, Crystallization, Solvent Recovery, Process commencing with Slurries or wet cake in batch operation carried out by heating and under vacuum.

Main Components

Main Shell with both side end cover
Agitator shaft for mixing and agitation
Limpet coil or jacket for cooling or heating
Special scrapper blade
Bearing housing with bearing
Agitator sealing arrangement
Utilities comprising of Heating and vacuum system

Selection Sepicification

Rotary Vacuum Paddle Dryer (RVPD) is used to dry powder from wet cake. The operating cost also very low as compared to other dryer and efficiency also very high. It is a closed system in which hot water/hot fluid or cold water/cold fluid flow in the Limpet coil/jacket. Condenser, receiver, dust collector and vacuum pump are part of the system. In RVPD, Heated paddle rotating in the shell with scrapper. Minimum clearance between scrapper and heated walls provide the heat transfer to the wet feed. Result is wet material dry to the required degree and vapors formed are removed

Operating Condition

Heating temperature : 30 °C to 300 °C
Vacuum : Up to even 0.6 torr

Capacity Ranges

Gross Capacity : From 100 Itrs. to 50000 ltrs
Charging Capacity : 50 % to 60% of gross capacity depending on the products

Features
- RVPD dryer give higher performance with higher heat transfer rates.
- Almost 100 percent recovery of solvent.
- RVPD dryer used for Reaction, Crystallization and drying the material.
- Low temperature drying for heat sensitive product is possible.
- Opening with manual discharge valve and charging door for minimum manual handling.
- Dries and conveys for discharge.
- Energy consumption very low.
- The hollow rotating agitator shaft imparts heat to the products, Scrape the shell wall, and tumbles the product for maximum heat transfer.
- Low power consumption by using of helical bevel gear box.