An equipment used for separation of solid on the base their density by using the centrifugal force.

1. Centrifugal Separator
Presented by:
Qaisar Yaqoob
2014-BT-CHEM- 19
Presented to:
Mr. Haris Mahmood Khan
Department of Chemical Engineering and Technology
UNIVERSITY OF ENGINEERING AND TECHNOLOGY LAHORE, K.S.K
CAMPUS.

2. 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 =
𝑊
𝑈
2
𝑔 𝑐 𝑟

4. Construction
It is consisting on a rotating basket which is fixed on vertical shaft
The basket is perforated on the sides and covered by a screen
basket is protected by casing
Discharge done through the outlet which is provided in the centrifuge
Washing of septum is available in centrifuge separator
Basket diameter = 30” - 80”
Depth of basket = 18” - 50”
Speed = (800 - 1800) rpm

6. 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.

8. Classification of centrifugal separator
Suspended batch centrifuge
Automatic batch centrifuge
Continuous filtering centrifuge

9. 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

11. 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.

13. 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.

15. 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.