Why buy your used decanter at Foeth?
You can always find a large selection of decanters suitable for the chemical, food, and pharmaceutical industries. The decanters’ functionality and quality are guaranteed since they are mechanically tested before sale. We always stock well-known brands; you can search for the decanter brands you need online. If you are on a budget, we have high-quality used decanters that fit within your range! Can't find the decanter you need? Contact us, we have experts ready to help you find the ideal decanter for your industrial use.
What is a decanter?
A decanter centrifuge (also known as solid bowl centrifuge) separates continuously solid materials from liquids in the slurry, and therefore plays an important role in the wastewater treatment, chemical, oil, and food processing industries. There are several factors that affect the performance of a decanter centrifuge.
The operating principle of a decanter centrifuge is based on separation via buoyancy. Naturally, a component with a higher density would fall to the bottom of a mixture, while the less dense component would be suspended above it. A decanter centrifuge increases the rate of settling through the use of continuous rotation, producing a G-force equivalent to between 1000 and 4000 G's. This reduces the settling time of the components by a large magnitude, whereby mixtures previously having to take hours to settle can be settled in a matter of seconds using a decanter centrifuge. This form of separation enables more rapid and controllable results.
How does it work
The feed product is pumped into the decanter centrifuge through the inlet. Feed goes into a horizontal bowl, which rotates. The bowl is composed of a cylindrical part and a conical part. The separation takes place in the cylindrical part of the bowl. The fast rotation generates centrifugal forces up to 4000 G. Under these forces, the solid particles with higher density are collected and compacted on the wall of the bowl. A scroll (also screw or screw conveyor) rotates inside the bowl at a slightly different speed. This speed difference is called the differential speed. This way the scroll is transporting the settled particles along the cylindrical part of the bowl and up to the end conical part of the bowl. At the smallest end of the conical part of the bowl, the dewatered solids leave the bowl via discharge opening. The clarified liquid leaves through a paring disc (internal centripetal pump).
What are the applications of decanters in chemical engineering?
An industrial decanter continuously separates large amounts of solids from liquids. Hence, it has diverse applications in the chemical, pharmaceutical, and food industries. For instance, decanters in chemical engineering are used to wash and dry various solids, like polystyrene beads, or concentrate solids and clarify liquids. Decanters can be adapted for sludge dewatering and water treatment.
Explore the collection of industrial decanters available at Foeth.
