From ccitonlinewiki
Jump to: navigation, search

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.

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

So we can find:

alt text

from the below graph, we can find d50 is 14 Micron Meter

alt text
                                           Determination of d50 from the desired particle separation


alt text

we can find Dc using below graph, and Dc is 16 cm

alt text

after that, for looking at another dimension base on the below figure:

alt text

the dimension of the cyclone are:

Thickness plate 2 mm

DC 160 mm

DC/5 32 mm

DC/3 53.33 mm

DC/2 80 mm

DC/7 22.86 mm

DC/10 16 mm


    Step 1: generating geometry base on calculation.

alt text

    Step 2: generating mesh