HP-hybrid filter press

A batch unit, the HP-hybrid filter press is typically used for products with specialty chemicals volumes in the range of500-3000 gallon batches. Products are processed in an enclosed atmosphere without operator or environmental exposure. FDA requirements, and conformation to good manufacturing practices (GMP) requiring containment of product, are continual issues. Applications are replacement of plate and frame filter presses, and products that are compressible and amorphous in nature with high specific cake resistances. 

Fermented products in the post-broth stage, where volumes are smaller, can be applications as production rates are limited in this design. Postcrystallization can also be an application if solids are found to be compressible. 

Replacement of cartridge filter systems wdiere high filter replacement costs occur as well as low volume waste treatment streams can also be processed. 

Residual moistures will be reduced in comparison to standard plate and frame units and RVF s by up to one-third, due to the high driving force created by the hydraulic membrane of up to 375 psi. Particles can be retained to one micron, which can eliminate the need for a precoat and save on waste disposal. As the cake developed in the pressure chamber is relatively even, and the wash delivered is also consistent, washing efficiency is high. (See Fig. 12.) 

This unit is a fully automated, totally enclosed filter press. The core of the system is a pressure chamber. It can be connected to peripheral equipment, such as a dryer or bin, for a totally contained system. 

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Figure 12. HP hybrid filter press. (Courtesy of Heinkel Filtering Systems, Inc.)...

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