Press Release Summary:
RT(R) filter can be used with either hot-gas drying or infrared drying. Filter is available in open, fume tight, gas tight, and pressure tight configurations, and with full sanitary configuration to meet cGMP requirements. For hot-gas drying, segmented tray design makes it easy to use specific tray sections as hot gas drying zones. Hot gas can be air, nitrogen, or steam. Infrared drying can be used with less permeable cakes that tolerate higher drying temperatures.
Original Press Release:
Continuous Filter-Dryers from Pannevis Produce a Dry Solid at the End of the Filter
The Pannevis RT(R) Filter can be used in all its configurations as a filter-dryer to produce a dry solid from the end of the filter. Either hot gas drying or infra-red drying can be carried out on the RT(R) filter and designs are available in open, fume tight, gas tight and pressure tight configurations - as well as full sanitary configuration to meet cGMP requirements. Clean-in-place is a standard on sanitary design filters.
For hot gas drying, the unique segmented RT(R) tray design makes it easy to use specific tray sections as a custom designed hot gas drying zone. The hot gas can be air, nitrogen or steam and, as with all RT(R) process steps, the drying operation is fully continuous. The gas passes down through the cake, thus using the filter cloth as a dust filter and eliminating the need for secondary gas cleaning.
By optimizing the cake thickness to maximize air permeability and, hence, air flow, the drying time is kept to a few minutes. This can be important when processing temperature sensitive products.
Infra-red drying can be used with less permeable cakes that can tolerate higher drying temperatures and which are wetted with non-flammable liquids. Infra-red drying is normally performed under vacuum, the same as all other process steps on the filter. The temperature can be regulated in each tray section to provide a heating profile along the length of the drying zone.
Hot gas drying can be incorporated in fume tight, gas tight and pressure tight RT(R) filters using re-circulated hot nitrogen as the drying medium. Toxic or hazardous materials can be dried in any of the above configurations. Most solvent-wet cakes and many water-wetted solids can be dried to less than 0.05% residual moisture.
For more information, contact Brian Mawson, Pannevis Inc., 195 Green Pond Road - Unit D, Rockaway Twp, NJ 07866. Tel: 973 627-6469. E-mail: email@example.com.