Chemical Engineering :: Mass Transfer
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Which of the following is a suitable absorbent for removal of H2S from natural gas ?
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Acetone is to be removed from air in an isothermal dilute absorber using pure water as solvent. The incoming air contains 5 mole% of acetone (yin = 0.05). The design equation to be used for obtaining the number of trays (N) of the absorber is, N+2 = 6 log (yin/yout).For 98% recovery of acetone, the number of trays required is/are
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Schimdt number and Lewis number for pure air at atmospheric conditions are respectively
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Below is given an equilibrium moisture curve of a substance. State which regions represent free moisture and unbound moisture respectively.
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Molecular diffusion is caused by the
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At __________ reflux, theoretical number of plates in a distillation coloumn is calculated using Fenske-Underwood equation.
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Separation of a mixture of two gases by absorption in the liquid solvent depends upon the difference in their
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Components, having widely different boiling point in a binary mixture, can be separated using __________ distillation.
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Which of the following equipments is not used in liquid-liquid extraction ?
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Pick out the wrong statement.
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A.
Packed towers are preferred for vacuum operation, because the pressure drop through the packing is less and they (packings) also lessen the possibility of tower wall collapse.
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B.
Packed towers are preferred over plate towers for handling corrosive and foamy liquids.
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C.
Diameter of randomly packed tower is normally more than 1.2 metres.
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D.
Due to uneven supply and improper distribution of liquid, problem of channeling, loading & flooding is generally encountered in packed towers.
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