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In a distillation column, the minimum residence time for liquid in the downspout is about ______________ seconds?

August 24, 2021March 2, 2019 by admin

In a distillation column, the minimum residence time for liquid in the downspout is about ______________ seconds?

A. 1
B. 8
C. 80
D. 180

Categories Process Equipment and Plant Design

A head comprises of straight flange section, corner torus, section and central dished section. Crown radius and knuckle radius in a head is related respectively to the__________________?

Pressure drop due to pipe fittings can be estimated by the equation, ΔP/ρ = 4f, (Le/D) (V2/2gc) where, Le = equivalent length of straight pipeline which will incur the same frictional loss as the fitting and D = diameter of the fitting. The value of (Le/D) (dimensionless) for 45° elbow and 180° close return bends would be respectively around______________________?

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