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Determine the key properties for humid air at a dry-bulb temperature of 160°F and a wet -bulb temperature of 100°F. Use Psychrometric chat and determine. Attach the chart with proper notation and values.
Determine the key properties for humid air at a dry-bulb temperature of 160°F and a wet -bulb temperature of 100°F. Use Psychrometric chat and determine. Attach the chart with proper notation and values.

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A stream of aqueous methanol having 45 mol% CHOH is to be separated into a top product having 96 mol% methanol and a bottom product with 4% methanol. The feed is at its bubble point and the operating pressure is 101.3 kPa. A reflux ratio of 1.5 is suggested. (i) Determine the number of ideal trays, (ii) Find the number of real tray if the overall tray efficiency is 40%. On which real tray should the feed be introduced ? The equilibrium data for the methanol-water system at 101.3 kPa are given below. X 8 0 y 0 0.02 0.134 0.04 0.23 0.06 0.304 0.08 0.365 0.10 0.418 0.15 0.517 0.20 0.579 X y 0.30 0.665 0.40 0.729 0.50 0.779 0.60 0.825 0.70 0.87 0.80 0.915 X 0.90 0.958 0.95 0.979 1.0 y 1.0
A stream of aqueous methanol having 45 mol% CHOH is to be separated into a top product having 96 mol% methanol and a bottom product with 4% methanol. The feed is at its bubble point and the operating pressure is ...

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4. A mixture of water and ethyl alcohol containing 0.16 mole fraction alcohol is continuously distilled in a plate fractionating column to give a product containing 0.77 mole fraction alcohol and a waste of 0.02 mole fraction alcohol. It is proposed to withdraw 25 per cent of the alcohol in the entering stream as a side stream containing 0.50 mole fraction of alcohol. Determine the number of theoretical plates required and the plate from which the side stream should be withdrawn if the feed is liquor at its boiling point and a reflux ratio of2 is used.
4. A mixture of water and ethyl alcohol containing 0.16 mole fraction alcohol is continuously distilled in a plate fractionating column to give a product containing 0.77 mole fraction alcohol and a waste of 0.02 mole fraction alcohol. It is ...

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A mixture of acetone vapour and air containing 5% by volume of acetone is to be freed of its acetone content by scrubbing it with water in a packed bed absorber. The flow rate of the gas mixture is 700 m3/hr of acetone free air measured at NTP, and that of the water is 1500 kg/hr. The absorber operates at an average temperature of 20 °C, and a pressure of 101 kPa. The scrubber absorbs 98% of acetone. The equilibrium relationship for the acetone-vapour-water system is given by: Y (kmol acetone/kmol dry air) = 1.68X(kmol acetone/kmol water) Calculate the following: (0) (ii) [5] [5] Amount of acetone absorbed The mean driving force for absorption, mass transfer area if the overall mass transfer coefficient is Ky = 0.4 kmol of acetone/m2 hr (kmol acetone/kmol dry air).
A mixture of acetone vapour and air containing 5% by volume of acetone is to be freed of its acetone content by scrubbing it with water in a packed bed absorber. The flow rate of the gas mixture is 700 ...

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A mixture of acetone vapour and air containing 5% by volume of acetone is to be freed of its acetone content by scrubbing it with water in a packed bed absorber. The flow rate of the gas mixture is 700 m3/hr of acetone free air measured at NTP, and that of the water is 1500 kg/hr. The absorber operates at an average temperature of 20 °C, and a pressure of 101 kPa. The scrubber absorbs 98% of acetone. The equilibrium relationship for the acetone-vapour-water system is given by: Y (kmol acetone/kmol dry air) = 1.68X(kmol acetone/kmol water) Calculate the following: (0) (ii) [5] [5] Amount of acetone absorbed The mean driving force for absorption, mass transfer area if the overall mass transfer coefficient is Ky = 0.4 kmol of acetone/m2 hr (kmol acetone/kmol dry air).
A mixture of acetone vapour and air containing 5% by volume of acetone is to be freed of its acetone content by scrubbing it with water in a packed bed absorber. The flow rate of the gas mixture is 700 ...

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