Difference between revisions of "Cyclone"

From ccitonlinewiki
Jump to: navigation, search
(basic calculation cyclone)
(calculation Cyclone)
Line 39: Line 39:
  
 
== calculation Cyclone ==
 
== calculation Cyclone ==
 +
 +
Estimate the size of hydrocyclone needed to separate 90 percent of particles with a diameter greater than 20-micron m, from 10 m3/h of a dilute slurry.
 +
'''Physical properties:''' solid density 2000 kg/m3, liquid density 1000 kg/m3, viscosity 1 mN s/m

Revision as of 18:23, 25 November 2020

basic calculation cyclone

The nomographs by Zanker can be used to make a preliminary estimate of the size of cyclone needed. The specialist manufacturers of hydrocyclone equipment should be consulted to determine the best arrangements and design for a particular application. Zanker’s method is outlined below and illustrated in the Example below and based on an empirical equation by Bradley (1960):

alt text

Where:

d50 = the particle diameter for which the cyclone is 50 per cent efficient, Micron

Dc = diameter of the cyclone chamber, cm,

u = liquid viscosity, centipoise (mN s/m2),

L = feed flow rate, l/min,

pl = density of the liquid, g/cm3,

ps = density of the solid, g/cm3.


alt text
                                           Determination of d50 from the desired particle separation

furthermore, we can see the different variable that determines cyclone such as viscosity, density, flow rate, diameter inside the cyclone.

alt text


after define Dc, we can find another dimension base on the below picture.


for calculating efficiency cyclone, we can find by below equation.


alt text

calculation Cyclone

Estimate the size of hydrocyclone needed to separate 90 percent of particles with a diameter greater than 20-micron m, from 10 m3/h of a dilute slurry. Physical properties: solid density 2000 kg/m3, liquid density 1000 kg/m3, viscosity 1 mN s/m