Absorption (liquid-gas system) with evolution of heat as compared to isothermal absorption results in

Related MCQs

• Absorption accompanied by heat evolution results in
• In a gas-liquid absorption column, for obtaining the maximum absorption efficiency
• Absorption factor, for a fixed degree of absorption from a fixed amount of gas should be
• Absorption accompanied with chemical reaction is exemplified by the absorption of
• In the absorption of ammonia in water, the main resistance to absorption is by the __________ phase.
• In a packed absorption tower, if the equilibrium and operating lines are both straight lines, then the ratio, HETP/HTUOG __________ the absorption factor.
• 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:
• An aqueous solution of methanol is to be distilled in a tray column. High pressure steam is available as a source of heat. For a given reflux ratio and overhead composition, two options are being explored; (i) a reboiler is used and (ii) no reboiler is used but steam is fed directly to the bottom of the column. As compared to option (i), in option (ii)
• High pressure at the bottom of a distillation tower handling heat sensitive materials results in
• In case of physical adsorption, the difference between heat of adsorption and heat of normal condensation is