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Separation Processes

This cake dryer has a unique heat-transfer system

The CakeStand Tray Dryer uses a unique heat-transfer system that ensures uniformity across all heating plates. The ergonomically designed unit has features, such as a pivoting door, front and back access, and heating plates that hang from the roof, that…

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Reboiler Condensate Drums: Silencing Hydraulic Hammer

Condensate pots are commonly used on the condensing sides of some reboilers, such as those that are heated by steam or refrigerant vapor. These pots provide a liquid seal that prevents uncondensed vapor from blowing out of the reboiler into…

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Reduce Costs with ‘Step-down’ Filtration

Among the challenges of effective solid-liquid filtration is the accumulation of solids on the filter surface, which creates an increasingly dense mass that process fluid must push through. In many applications in the chemical process industries (CPI), a step-down filtration…

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How long does it take to reach steady state?

How long does it take a six-tray, 4-ft dia. deisobutanizer to achieve steady state? That depends on your definition of “steady state”. Some control experts regard 95% of “ultimate value” as a good definition, but how useful is that definition?…

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Preventing Self-Heating and Ignition in Drying Operations

Many solid materials can exhibit self-heating, which — if unchecked — can progress to a fire or even explosion. And even if the situation does not get that far, it is likely to affect the output of the process, in…

This vacuum-drying reactor is flexible

The mixing-drying reactor can process substances of widely differing consistencies. The machine, which dries in a fine vacuum, is also very flexible with regard to the filling level. It is suitable for both homogenization of a mixture and also for…

A fine way to separate solids from slurries

The Sweco Hydrocyclone Systems provide an economical and effective method for removing solid particles in the 4 to 100+ µm range from slurries. Hydrocyclones typically make finer separations than are practical with screening separators and at significantly higher capacities, says…

This multimotion dryer is kind to sensitive products

The Planex System is a patented, horizontal paddle vacuum dryer developed for vacuum drying of wet powders obtained from a centrifuge or filter press. The system consists of a fixed cylindrical chamber with an eccentric agitator inside with two independent…

This filter tackles difficult liquid filtration challenges

The new ZCore depth cartridge filter is said to offer improved performance, less downtime and reduced operating costs. The ZCore is especially suited for extreme applications where traditional cartridge filters are not effective, such as hot-water sanitizing, high-temperature chemical processing,…

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When troubleshooting the extractor

I have an ongoing dispute with a longtime colleague, Bob Miller. I said he ruined my new safety boots. He said he didn’t. Bob was a young, fearless distillation engineer at a time when our extraction engineer refused to take…