Elementary Principles 67

# Elementary Principles 67 - 4.35 (cont'd) Total molar flow...

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4- 26 4.35 (cont’d) Total molar flow rate of liquid feed to stripper and mole fraction of CO 2 : ±± , ± . nn x n 34 3 3 680 00478 += = + = mol / h molCO / mol 2 e. Scale up to 1000 kg/h (=10 6 g/h) of product gas: MW g CO / mol g CH / mol g / mol g/h g/mol mol/h mol / h mol / h) 24 1 feed 1 64 44 001 44 099 16 1628 10 10 1628 6142 10 100 6142 10 7071 869 10 =+= = × = × .. . ± . ± (. /( . . bg di b g n n new new f. TT as < The higher temperature in the stripper will help drive off the gas. PP > The higher pressure in the absorber will help dissolve the gas in the liquid. g. The methanol must have a high solubility for CO 2 , a low solubility for CH 4 , and a low volatility at the stripper temperature. 4.36 a. Basis : 100 kg beans fed m 1 kg C 6 H 14 ej 300 kg C H 61 4 130 870 . . kg oil kg S m x y xy 2 2 2 22 1 kg kg S/ kg kg oil / kg kg C H / kg 4 −− m 5 kgC 6 H 14
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