Chemical Engineering :: Mass Transfer
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Perforated plate towers are unique for solvent extraction because, they provide
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In case of absorption & stripping, the interface of the liquid & gas phases are present in equilibrium, when the diffusional resistance of __________ is zero.
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Pick out the wrong statement pertaining to the analogy between equations of heat and mass transfer operations.
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The individual mass transfer co-efficients (moles/m2 . s) for absorption of a solute from a gas mixture into a liquid solvent are, KL = 4.5 and KG = 1.5. The slope of the equilibrium line is 3. Which of the following resistance (s) is (are) controlling ?
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Swenson-Walker crystalliser is a __________ unit
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According to the Fenske equation, what will be the minimum number of plates required in a distillation column to separate an equimolar binary mixture of components A and B into an overhead fraction containing 99 mol% A and a bottom fraction containing 98 mol% B ? Assume that relative volatility (αAB = 2) does not change appreciably in the coloumn.
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Absorption (liquid-gas system) with evolution of heat as compared to isothermal absorption results in
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With increase in temperature, the mutual solubility of two liquids
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Pick out the wrong statement.
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A.
Sherwood number in mass transfer is analogous to Nusselt number in heat transfer.
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B.
Prandtl number in heat transfer is analogous to Schmidt number in mass transfer.
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C.
Reynolds number in mass transfer is analogous to Grashoff number in heat transfer.
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D.
Reynolds number remains the same in both heat and mass transfer.
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A.
In solvent extraction, the distribution co-efficient should be as large as possible for solvent economy.
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B.
With increase in pressure, the solubility of gases in solvent increases at a fixed temperature.
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C.
Decrease in Murphree plate efficiency is an indication of entrainment in distillation coloumn.
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D.
The capacity of a distillation coloumn is maximum at total reflux.
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