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3. A certain plant requires SO2 solution in water which can be prepared by absorbing SO2 gas in pure water. The source of the SO2 is a sulfur burner which issues a gas consisting of 12 % SO2, 10% O2 and 78 % N2. 90 kg-mol/hr of this gas is available. The resulting solution is 1 % SO2 by weight. The outgoing gas has a partial pressure of SO2 equal to 2.6 mm Hg and a partial pressure of water equal to 20 mm Hg. The total pressure is 760 mm Hg at 35°C. Find the liquid water requirements in kg/h, the volumetric flow rate of the exit gas and the % recovery of the SO2 gas.

3. A certain plant requires SO2 solution in water which can be prepared by absorbing SO2 gas in pure water. The source of the SO2 is a sulfur burner which issues a gas consisting of 12 % SO2, 10% O2 and 78 % N2. 90 kg-mol/hr of this gas is available. The resulting solution is 1 % SO2 by weight. The outgoing gas has a partial pressure of SO2 equal to 2.6 mm Hg and a partial pressure of water equal to 20 mm Hg. The total pressure is 760 mm Hg at 35°C. Find the liquid water requirements in kg/h, the volumetric flow rate of the exit gas and the % recovery of the SO2 gas.

Introduction to Chemical Engineering Thermodynamics
Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN:9781259696527
Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Chapter1: Introduction
Section: Chapter Questions
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3. A certain plant requires SO2 solution in water which can be prepared by absorbing SO2 gas in pure water. The source of the SO2 is a sulfur burner which issues a gas consisting of 12 % SO2, 10% O2 and 78 % N2. 90 kg-mol/hr of this gas is available. The resulting solution is 1 % SO2 by weight. The outgoing gas has a partial pressure of SO2 equal to 2.6 mm Hg and a partial pressure of water equal to 20 mm Hg. The total pressure is 760 mm Hg at 35°C. Find the liquid water requirements in kg/h, the volumetric flow rate of the exit gas and the % recovery of the SO2 gas.
Transcribed Image Text:3. A certain plant requires SO2 solution in water which can be prepared by absorbing SO2 gas in pure water. The source of the SO2 is a sulfur burner which issues a gas consisting of 12 % SO2, 10% O2 and 78 % N2. 90 kg-mol/hr of this gas is available. The resulting solution is 1 % SO2 by weight. The outgoing gas has a partial pressure of SO2 equal to 2.6 mm Hg and a partial pressure of water equal to 20 mm Hg. The total pressure is 760 mm Hg at 35°C. Find the liquid water requirements in kg/h, the volumetric flow rate of the exit gas and the % recovery of the SO2 gas.
4. Acetone is used as solvent in a certain process. Recovery of acetone is done by evaporation into a stream of N2. In the solvent recovery unit 50 kg of acetone are evaporated/hr. The gas entering is at 35°C, 750 mm Hg with a partial pressure of acetone of 10 mm Hg. The gas leaving is at 30°C, 740 mm Hg with 85% saturation. Calculate: a) m3 of entering gas/hr; b) m3 of exit gas/hr.
Transcribed Image Text:4. Acetone is used as solvent in a certain process. Recovery of acetone is done by evaporation into a stream of N2. In the solvent recovery unit 50 kg of acetone are evaporated/hr. The gas entering is at 35°C, 750 mm Hg with a partial pressure of acetone of 10 mm Hg. The gas leaving is at 30°C, 740 mm Hg with 85% saturation. Calculate: a) m3 of entering gas/hr; b) m3 of exit gas/hr.
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