31. Flights in a rotary dryer are provided to
32. Compound A is extracted from a solution of A + B into a pure solvent S. A Co-current unit is used for the liquid-liquid extraction. The inlet rate of the solution containing A is 200 moles of B/hr.m2 and the solvent flow, rate is 400 moles of S/m2.hr. The equilibrium data is represented by Y = 3X2, where Y is in moles of a A/moles of B and X is in moles A/moles of S. The maximum percentage extraction achieved in the unit is
33. __________ column is preferred to be used, when a high liquid hold up is required in a reactor for gas-liquid reaction.
34. Flooding in a vapor-liquid contacting equipment occurs in a tray, when the pressure drop through a tray is __________ the liquid head available in the downcomer.
35. Unsaturated air (with dry and wet bulb temperatures being 35 and 25°C respectively) is passed through water spray chamber maintained at 35°C. The air will be
36. All moisture in a non-hygroscopic material is the __________ moisture.
37. In physical terms, Schmidt number means
38. In case of liquids, the binary diffusivity is proportional to (where, T = temperature)
39. Which of the following assumes constant molal vaporisation and overflow?
40. The wetted wall tower is used to determine
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