VSEP concentrates PVC latex to 68% solids and reduces spray dryer load

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Courtesy of New Logic Research, Inc.

New Logic International installed its Vibratory Shear Enhanced Processing (VSEP®) system on August 21, 1996 at a major international latex/chemicals manufacturing facility in Europe. VSEP is used for preconcentration of Poly Vinyl Chloride (PVC) latex to a spray dryer at this facility. The VSEP system uses an ultrafiltration membrane module and is able to concentrate (dewater) latex emulsions from a concentration level of 38 percent to a level of 55 to 68 percent. The system is also able to substantially reduce the process dryer energy requirements, thus debottlenecking the process and increasing manufacturing capacity by a factor of 2 to 3. The Economics of installing this system are extremely attractive and result in a pay back period of 4 to 9 months. Application of the VSEP membrane technology to PVC and similar latex concentration (e.g. Styrene Butadiene Rubber (SBR) and Acrylonitrile Butadiene Styrene (ABS)) at latex/chemical  manufacturing facilities has proven to be an attractive economic alternative.

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