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Separation Processes

This membrane module can be cleaned by backwashing

With a membrane area of 10 m 2 and a 10-kD molecular weight cutoff, this new Flow-Cel module (photo) is optimally designed to filter protein-containing liquids with high solids content. The key feature of this cassette system is the ability…

A new, mineral-free depth filter medium

This firm has developed the bepure process, in which different types of high-purity cellulose are crosslinked to form a structure that does not require the addition of any inorganic material, even for sterile filtration duties. BecoPad P (photo) is characterized…

A new decanter generation for food-and-drink applications

The F Series represents a new generation of decanter. The GCF 405 is designed for products that are difficult to discharge, which makes it suitable for use as a clarifying decanter in brewing and beverage industries. The multifunctional machine with…

New, efficient decanters for environmental applications

Efficient acceleration of the product in the feed zone combined with an optimized discharge system enables the new C-Series environmental decanter line to boast a reduced power consumption of up to 20–30% for capacities of 20 to 90 m3/h. This…

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FRI’s parallel projects

Considering that Fractionation Research, Inc. (FRI) has been performing distillation research since 1954, don’t we have all the answers yet? Not according to the membership. The vendors of trays and packings have had very aggressive R&D programs. New and interesting…

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Crow’s nest

The fact that I was 150 ft up, on the outside of an extraction column, in January, in Canada, in a 20-mph wind, was not the worst part of the experience. The worst part was that the column was not…

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S-L separation: No more separation anxiety

Given the state of the still-lagging economy, it doesn’t come as a surprise that the chemical process industries (CPI) are attempting to get more finished product from their existing processes at lower costs. As a result, many are examining their…

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Earthquake fractionation

Some columns sway with the wind; some columns sway with the waves. In fact, hundreds of columns now reside offshore, on platforms and on barges. Most dry and sweeten gases. Some distill. The trays and packing distributors of such columns…

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Reboiler Circuits For Trayed Columns

The reboiler generally supplies most of the energy required to effect component separation. If too much heat is supplied, the tower may flood; conversely, if too little heat is available, separation performance may decrease via poor reflux ratio (pinching), excessive…

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Did somebody say pilot plant?

During the first three days of last month’s AIChE Annual Meeting (November 7–12; Salt Lake City, Utah), like many attendees, I hopped from session to session listening to those papers that were of the most interest to me. Generally, I…