used rotary vacuum dryers

Product Details:

Rotary Vacuum Paddle Dryer (RVPD) - 10 KL Capacity (SS 316)​The Rotary Vacuum Paddle Dryer (RVPD) is an essential, high-efficiency, batch-processing system for critical drying applications in India's Pharmaceutical, Chemical, Agrochemical, and Specialty Food industries. The 10 KL (10,000 Litre) size makes it ideal for medium-to-large scale production, ensuring high throughput per batch.​Core Product Description & Working Principle​A Rotary Vacuum Paddle Dryer is an indirect heat transfer device comprising a horizontal, cylindrical, jacketed vessel with a central rotating shaft fitted with specially designed paddles or ribbons.​Vacuum Operation: By operating under a high vacuum (up to 1 Torr or full vacuum), the boiling point of the solvent or moisture in the wet material is significantly lowered. This enables low-temperature drying, which is crucial for protecting heat-sensitive or thermal-degradable products like APIs (Active Pharmaceutical Ingredients).​Indirect Heating: Heating media (like Steam, Hot Water, or Thermic Fluid) is circulated through the external jacket and, often, through the hollow central shaft and paddles. This indirect transfer prevents product exposure to high localized temperatures.​Simultaneous Mixing & Drying: The slow-speed, rotating paddles (typically 1-20 RPM) continuously agitate the material. This action ensures uniform mixing, constantly renewing the surface area exposed to the heated walls, which maximizes heat transfer and evaporation rate for a shorter drying cycle.​Solvent Recovery: Being a closed system, the evaporated solvent vapor is pulled through a dust catcher/filter, condensed, and collected in a receiver, ensuring near 100% solvent recovery and a safe, contained, and environment-friendly operation suitable for volatile or hazardous materials.​Discharge: Once dried, the material is discharged quickly through a bottom discharge valve.
Feature Specification Range (Typical for 10 KL Size)

• Capacity (Total Volume) 10,000 Litres (10 KL)
• Material of Construction (MOC) SS 316 / SS 316L (Contact Parts, essential for corrosive materials and cGMP compliance)
• Heating Media Steam, Hot Water, or Thermic Fluid/Hot Oil
• Heating Temperature Typically 50^{\circ}\text{C} to 300^{\circ}\text{C} (Varies by heating media)
• Vacuum Level High Vacuum (e.g., up to 1\text{ Torr} absolute pressure)
• Application Batch Drying (Simultaneous Mixing, Drying, and Breaking of Lumps)
• Agitator Design Hollow shaft with special paddles or helical ribbons; often includes lump breaker rods/choppers.
• Power Source 3 Phase, Electric (Motor power varies, but typically \sim20\text{ HP} to 50\text{ HP} for this size)
• Automation Grade Semi-Automatic to Fully Automatic (PLC based control is common)
• Sealing Stuffing Box or Mechanical Seal with Thermo-Siphon arrangement.

• Low-Temperature Drying Protects high-value, heat-sensitive products (APIs, specialty chemicals) from degradation. Pharmaceuticals & Bulk Drugs (APIs, Intermediates)
• High Solvent Recovery Maximizes process efficiency and ensures environmental compliance in line with Indian pollution control standards. Chemicals (Hazardous, Volatile Compounds)
• Uniform Product Quality Consistent agitation and scraping ensure uniform heat transfer and moisture content, reducing batch-to-batch variation. Pigments and Dyestuffs
• Contained Operation Vapor-tight construction provides a safe environment for operators when handling toxic or flammable materials. Agrochemicals

High Thermal Efficiency Indirect heating and vacuum reduce energy consumption compared to conventional dryers.

Additional Information:

• Production Capacity: As per Requirement
• Delivery Time: Immediate
• Packaging Details: Standard