RL Blogs
By Jigar Patel
Apr 02, 2018Applications of decanters for oil recovery from sludge. |
Facilities involved in treating oil-contaminated sludge employ a centrifuge in most cases to improve the efficacy of SAS chemicals. The decanter centrifuge is custom designed to cope with a wide range of fluctuations in the feeding material while delivering excellent dewatering and clarification performance on several processing applications.
Let’s take a look at the two commonly used centrifuge types for solid-liquid separation: Two-Phase Decanter Centrifuge: Functioning and Features
When used for solid-liquid separation, this specific model helps save tremendous dilution water which is not only economical but also eco-friendly. It also delivers the best quality oil by retaining its highest possible content of polyphenol for an exceptionally long shelf life. The two-phase decanter centrifuge comprises a rotating bowl fitted with a screw conveyor that rotates at a slightly different speed from the solid bowl.
The feed enters the chamber assembly through a stationary tube and gets discharged through the feed ports. The slurry then falls into the large end of the rotating chamber where the gravitational force causes the solids to settle down and form a blanket against the bowl wall. The accumulated solids are then pushed up an incline and ultimately out of the liquid. The clarity of the liquid discharged from the decanter is influenced by various factors including the g-force, differential speed, polymer addition, rate of flow and pond setting.
The Process Technology Features of Two-Phase Decanter Centrifuge
Three-Phase Decanter Centrifuge: Functioning and Features
The three-phase decanter centrifuge for oil waste treatment features a solid bowl engineered for highly efficient solid-liquid separation. The feed enters the rotating bowl of the decanter through a tube where it is thrown outwards by the conveyor hub containing radial ports. It employs the centrifugal force for solid liquid separation. The solid particles settle down at the wall of the bowl from where they are discharged through the conveyor while the cleared liquid accumulates above the solids. The liquid phases are then discharged at the opposite end of the decanter. Different decanter designs employ different means to discharge the liquid phases including overflow weirs, pressure pumps or dip tubes that work under the effect of gravity. The Process Technology Features of Three-Phase Decanter Centrifuge
According to field experts, there are some trade tricks that can efficiently boost the sludge-splitting capacity of these centrifuges. Below are 7 tried-and-tested ways that oil waste treatments plants can employ to boost decanter performance dramatically:
Using centrifuge for oil waste treatment has several benefits that range from maximum separation precision, shorter process times, full torque, rapid amortization, low energy consumption and maximum product yield.
Author Bio:
Jigar Patel is the director of Oriental Manufacturers. He believes in the power of good functional designs and its ability to boost productivity and drive growth. Fueled by his passion for innovative designs and all things EPC, Jigar took to blogging about all the information and technical know-how he has amassed over the years. He writes on topics related to process machinery production, turnkey solutions, best industry practices and his personal insights. |
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