Filters and Filter/Dryers

Filter/Dryer Product Description

DDPS innovative technology combines the filter and dryer into a single unit, reducing product handling, contamination and capital cost. The filter/dryer performs a multitude of tasks including filtration, displacement or reslurry washing, vacuum or convection drying.  It can discharge wet cake, slurry, liquid, or dried cake to less than 0.1% moisture.

Filter/Dryer Applications

Our range of filters and filter-dryers provides optimum performance and flexibility for demanding pilot, small-scale, and full production operations that require high efficiency in washing and isolating solids.  The side discharge valve is ideal for applications that involve multi-purpose production with frequent product changes or processes with stringent requirements for low-particle and sterile production.

Filter/Dryer Features

Our filters and filter/dryers have many features that make them the recognized industry leader including:

• Agitator - Unique, 3-arm "S" blade is designed for low speed and high torque service for processing thick, wet or dry cakes.  Angled and profiled blades for axial and radial mixing of soil.  the tip speed is gentle of the crystals and eliminates the concern for shearing or crystal damage.
  
• Universal Filter Media - The filter plate design allows the use of all types of filter media: cloth, single later metal screen, or multi-layer sintered metal.
• Side Discharge Valve - This patented design features a metal-to-metal seals, eliminating the cleanability issues that can arise with the use of o-rings.  The valve is FDA validated and will provide a pressure/vacuum-tight seal.
• Heated Filter Plate - The all-welded design provides heat energy directly into the cake from the underside, allowing for heat transfer through all of the filter contact surfaces, for more efficient drying.
• Controls - Our in-house controls engineers design both manual controls and more sophisticated PLC-based controls with both local and remote stations for pilot units.
• Vessel Design - DDPS provides strict and rigid pharmaceutical vessel specifications.
  

Filter/Dryer Advantages

• No operator contact
• Emission-free
• Closed system
• Efficient washing and reslurry
• Multipurpose
• Easy to clean
• Reduced production time and improved product quality
  

Filter/Dryer Specifications

• Sizes from 0.2m² to 12.0m²
• Pressures from full vacuum to 150 psig (10 bar)
  
• Temperatures from -4°F (-20ºC) to 250°F (120ºC)

Options

• Gas Knife System – A unique and innovative solution that enables a total product discharge without manual intervention.
• Various materials of construction including 316L stainless steel, Alloy 20, C-22 and others.
• CIP/WIP and SIP systems
• Heated agitator
• Various main shaft seal designs

Filter/Dryer Vessel Assembly Video