Membrane Filtration Technology
The robust A5 tubular membrane filtration modules are suitable for processors dealing with viscous, high-solids materials. Pilot applications in U.S. chemical plants have shown that the unit effectively handles materials with up to 70% suspended solids. By reducing the diameter of the tubular membranes in the new module from ½ in. to ¼ in., the company has made the A5 more compact and better able to withstand higher pressures than other unsupported tubular membrane modules.
Unlike spiral filters, which require spacers that can trap solids, the unsupported tubular membranes of the A5 module are far less likely to clog during processing. In addition, the open tubular construction avoids telescoping that can occur with spiral elements subjected to high differential pressures across the element. Thus high viscosity liquids can be processed without concern.
The unit is comprised of a core of 69 PVDF (polyvinylidene fluoride) tubes in a stainless steel housing, yielding a nominal total of 50 sq. ft. of filtration area in each 12 ft. module. The compact design means filtration plants made up of these modules will require fewer pumps and fittings, and less floor space. The higher operating-pressure rating means the modules can be used in a wide range of processing applications. The in-situ replaceable core enable fast, easy and cost-effective membrane replacement.
PCI Membrane Systems, Inc., 1615 State Rte. 131, Suite 100, Milford, OH 45150. Tel: 513-575-3500. Fax: 513-575-7393.