Question. A coal gas is to be freed of its light oil (i.e., benzene) by scrubbing...
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Question. A coal gas is to be freed of its light oil (i.e., benzene) by scrubbing countercurrently with wash oil as an absorbent and then the light oil is to be recovered by stripping the resulting solution countercurrently with steam. Coal gas flows in, at a rate of 0.250 m³/s at 26°C and 1 atm, containing 2.0% by volume of light oil vapors (i.e. benzene). 95% of the light oil removal is required. The wash oil is to enter at 26°C, containing 0.005 mole fraction benzene, and has an average molecular weight of 260 g/mol. A wash oil circulation rate of 1.5 times the minimum is to be used. Wash oil-benzene solutions are idea. The temperature will be constant at 26°C. The solution from the absorber is fed to the stripper at 1 atm and 122°C. Superheated steam is used to recover benzene from the solution came from the absorber. A steam rate of 1.5 times the minimum to be used. The resulting wash oil contains 0.005 mole fraction of benzene and is returned to the absorber upon cooling down to 26°C. Calculate the wash-oil circulation rate and the steam rate required to accomplish the required scrubbing and recovery by using UNISIM. Equilibrium relations: For Absorption: 0.125 X For stripping: Y 1+Y Y 1+Y = 1+X X 1+X¹ = 3.16- Question. A coal gas is to be freed of its light oil (i.e., benzene) by scrubbing countercurrently with wash oil as an absorbent and then the light oil is to be recovered by stripping the resulting solution countercurrently with steam. Coal gas flows in, at a rate of 0.250 m³/s at 26°C and 1 atm, containing 2.0% by volume of light oil vapors (i.e. benzene). 95% of the light oil removal is required. The wash oil is to enter at 26°C, containing 0.005 mole fraction benzene, and has an average molecular weight of 260 g/mol. A wash oil circulation rate of 1.5 times the minimum is to be used. Wash oil-benzene solutions are idea. The temperature will be constant at 26°C. The solution from the absorber is fed to the stripper at 1 atm and 122°C. Superheated steam is used to recover benzene from the solution came from the absorber. A steam rate of 1.5 times the minimum to be used. The resulting wash oil contains 0.005 mole fraction of benzene and is returned to the absorber upon cooling down to 26°C. Calculate the wash-oil circulation rate and the steam rate required to accomplish the required scrubbing and recovery by using UNISIM. Equilibrium relations: For Absorption: 0.125 X For stripping: Y 1+Y Y 1+Y = 1+X X 1+X¹ = 3.16-
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A Cod gasis to freed of its light on lightailis ben Zene By Scrubbing Counter Cormently with wash oi... View the full answer
Related Book For
Introduction to Chemical Engineering Thermodynamics
ISBN: 978-0071247085
7th edition
Authors: J. M. Smith, H. C. Van Ness, M. M. Abbott
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