Elementary Principles 235 - 6.89 Basis: 100 kg/h. A=oleic...

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6- 69 6.89 Basis : 100 kg/h. A=oleic acid; C=condensed oil; P=propane a. 90% extraction : ± (. ) ( m 3 009 005 100 = kg / h) = 4.5 kg A / h Balance on oleic acid : ( ) ± . ± . 005 100 45 05 22 = + = mm kg A/h A/h Equilibrium condition : 015 45 45 95 732 1 1 . ./ ( ± .) (. ) ± . = + + ⇒= n n kg P / h b. Operating pressure must be above the vapor pressure of propane at T=85 o C=185 o F Figure 6.1-4 p propane * psi 34 atm == 500 c. Other less volatile hydrocarbons cost more and/or impose greater health or environmental hazards. 6.90 a. Benzene is the solvent of choice. It holds a greater amount of acetic acid for a given mass fraction of acetic acid in water. Basis : 100 kg feed. A=Acetic acid, W=H 2 O, H=Hexane, B=Benzene Balance on W : 100 0 70 0 90 77 8 11 *. . = = kg Balance on A : 100 0 30 77 8 010 22 2
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This note was uploaded on 02/27/2012 for the course CHEMICAL E 312 taught by Professor Cheung during the Fall '11 term at The University of Akron.

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