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).

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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).

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Engineering Swami 7 months 2024-12-02T01:03:08+05:00 2024-12-02T01:03:08+05:00 1 Answer 9 views

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