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Separation Processes

A four-layer filter for exceptional performance

Freudenberg Filtration Technologies The new Viledon Compact pocket filters of the T90, MF 90 and MF 95 series feature a four-layer medium and an integrated nanofiber layer, which achieves “superlative” filtering performance by means of mechanical assistance coupled with a…

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Harnessing the Power of a Cyclone

Due to their simplicity of construction, lack of moving parts, ability to operate at a wide range of temperatures and pressures, low capital and operating cost, cyclones have been the workhorse for gas-solid separation in a wide variety of industries.…

Improve separator performance with this inlet diffuser

Designed for new or existing separator and distillation tower operations, the Uniflow Inlet Diffuser can correct flow imbalances and improve gas distribution with a geometry that dissipates high inlet-gas velocities and evenly distributes gas in the vessel. By maximizing the…

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Tips for Selecting Highly Efficient Cyclones

[Originally published in the May 1995 issue of Chemical Engineering] Cyclone dust collectors have been used - and misused - all over the world for more than 100 years. One reason for the misuse is a common perception among users…

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‘I do not believe in entrainment’

It was the Dr. James R. Fair Heritage Distillation Symposium at the Chicago AIChE meeting last month. I had decided to finally give a presentation about something that has been bugging me since October 28, 1974, my first day as…

Focus on Dryers and Evaporators

The Witte Co. This salt-drying system recycles hot exhaust air Among a host of advantages, the bulk salt-dryer system (photo) from this company captures half of its hot exhaust air for recycling, which both reduces energy requirements and cuts the…

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Distillation Back Mixing: Impact on Batch Yields

Several case histories illustrate the benefits of identifying and correcting poorly designed reflux and product-handling systems Manufacturers of specialty chemicals are routinely required to reduce costs and increase the production of their high-value products. Specifically, competitive pressures from the developing…

This Pilot Fluidized-Bed Dryer Operates Continuously

On display at this firm’s booth will be a hiconti pilot plant that will later be delivered to a customer from the pharmaceutical industry. The unit is designed for continuous and homogeneous drying of various extrudates in pilot scale, prepared…

A membrane that improves salt rejection and flowrate

This firm announces two new FilmTec 8-in. saltwater reverse osmosis (SWRO) membrane elements for improved performance and energy efficiency in desalination applications. At 99.80%, the FilmTec SW30XHR-400i has the highest salt rejection consistently demonstrated in the industry, according to the…

Large-scale pressure filtering gets a redesign

In response to the increased demand for tailings and fine iron-ore filtration, this firm has created a platform for large-scale pressure filtration in mining applications. The Hoesch Fast Opening Filter Press is the latest development, which is one of the…