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A gaseous mixture containing CO2 and ethanol, with a molar composition of 92%CO2 and 8% ethanol, is evolved from a fermentation process. The ethanol must
A gaseous mixture containing CO2 and ethanol, with a molar composition of 92%CO2 and 8% ethanol, is evolved from a fermentation process. The ethanol must be recovered by means of a countercurrent absorption process using water as the solvent. The gas mixture will enter the tower at a rate of 4000m3h1, at 25C and 1.1atm, while the solvent (water) will be supplied at a flowrate of 6500kgh1 and also at 25C. The required recovery of ethanol is 97.0%, while the pressure drop for the gas stream should not exceed 250Pam1 of packed height. Assume negligible CO2 is absorbed into the water and the column is isothermal. Derive an equation for the operating line of this separation and plot this on your XY plot
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