Centrifugal Separator

Presented by:Qaisar Yaqoob2014-BT-CHEM- 19

Presented to:Mr. Haris Mahmood Khan

Department of Chemical Engineering and TechnologyUNIVERSITY OF ENGINEERING AND TECHNOLOGY LAHORE, K.S.K

CAMPUS.

Introduction

It is a machine which utilized the centrifugal force for the separation of liquid from solid.

Solid that form a porous cake can be separated.Centrifugal force is applied to given slurry by which separation is

done.The force is done by centrifugal action given by following equation,

Fc =

ConstructionIt is consisting on a rotating basket which is fixed on vertical shaftThe basket is perforated on the sides and covered by a screenbasket is protected by casing Discharge done through the outlet which is provided in the centrifugeWashing of septum is available in centrifuge separator

Basket diameter = 30” - 80”Depth of basket = 18” - 50”

Speed = (800 - 1800) rpm

Working

Charging of centrifuge.Centrifugal force is applied by rotate the basket at high speed.Filtrate will pass through screen and cake formation started.Centrifuge is stopped by applying breaks.Washing of cake.Removing of cake.

Classification of centrifugal separator

Suspended batch centrifugeAutomatic batch centrifugeContinuous filtering centrifuge

Suspended batch separator

Common type of batch centrifuge.The basket held at lower end of a free driven vertical shaft.A layer of cake ranges from 2” – 6” is formed on septum.Then wash water is applied on cake.The cake is then spun as dry and removed.These separators are used in textile industries and sugar industries.Divided in two categories,

• Top driven• Under driven

Automatic batch centrifuge

Basket rotates at constant speed about horizontal axis.Feed slurry, wash liquid and screen rinse are sprayed by automatic

system.Basket unloaded and cake is removed by heavy knife.It has very high productive.

Continuous filtering centrifuge

Fed through a revolving feed funnel.Funnel accelerate the feed slurry smoothly and gently.A layer of crystal formed on septum.This layer is moved over by reciprocating pusher.Diameter of basket ranges from (300 - 1200) mm.

Industrial Applications

Centrifugal separators are used in chemical industries in the purification of intermediate or final products.

It is used for fuels cleaning and treatment.These are installed for any type of food or beverage.Take part in the treatment and recovery of process water.