Separation Processes
Clarifying Liquid Filtration
There are various reasons that make filtering necessary in processes. The raw materials might have impurities that require removal at the start of the process. After the initial mixing to produce the process slurry, the mother liquor could have…
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…
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…
This agitator design improves performance of Nutsche filtration
Good agitated Nutsche filter dryer performance relies heavily on the agitator design. The design of this companys agitator has a series of sharp curved blades with spaces at different centers of each arm. When moving or lifting filter cake product…
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…
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?…
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…