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The concept of the decanter involves the balancing of liquid heights due to differences i

rising through the heavier.The phases are divided in to continuous phase and dispersed phase.T

=(Flow rate of lighter phase/

Q density

In the current example kg/sec kg/m3MDC 0.272 1330

Water 0.005 1000

Conditions for In the current, MDC-Water s

Result

3.3 heavy phase always dispersed Assume the droplet size to b

Terminal Settling Velocity

ud=dd2g(d-c)/1

ud

Assume I is 80% of d iameter D of the vessel and L/D=5 Where L is the length of

(Qc/A1)

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Length of the decanter Since;L=5*Diameter

Residence time in the decanter (Volume of tank/Total Volum

0.125 hours

8 mins

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n density of the two phases,as well as settling velocity of the heavier phase falling through the li

o know which phase is continuous and what is dispersed the following formulae is used.

low rate of Heavy Phase)*(density of light phase*Viscosity of heavier phase/density of heavier phase*viscosity of l

Viscosity

kg/m.sec0.000413

0.000894

0.013385

stem,Water is in light phase there fore it is dispersed.Continous phase is MDC.

kes law for determining the settling velocity of the droplets to find the diameter and height of the deca

150m

c

-0.009410756 m/sec

he vessel, mts

of continous phase divided by the density of continous phase.

0.204678363 m3/sec

2.331859005 mts

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11.65929502 mts

etric flow rate)

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hter or the lighter

ight phase)^0.3

nter.