# Sol4-7p4 - [7 r =(k*Cao(1 esp‘x(4*CaoA2*xA3(1 esp*x\2*Kc...

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Unformatted text preview: [7] r = -(k*Cao/(1+esp‘x))*(4*CaoA2*xA3/((1+esp*x)/\2*Kc)) At v = 500 dm3 x = 0.507 and y = 0.381 P4-7 (g) Membrane reactor: A —+ B + 2C CA = COFA/FT CB = COFB/FT Cc = COFC/F'l‘ FT=FA+FB+FC and 'I'A= l'B = fc/Z Using polymath, For PFR, ‘See Polymath program P4-7-g.pol. POLYMATH Results Calculated values of the DES! variables Variable initial value minimal value maximal value final value v 0 0 1040 1040 Fa 2.5 1.3231889 2.5 1.3231889 Fb 0 0 0.3635477 0.0684325 FC 0 0 2.3536223 2.3536223 Kc 0.025 0.025 0.025 0.025 Ft 2.5 2.5 3.7452437 3.7452437 Co 0.3 0.3 0.3 0.3 K 0.044 0.044 0.044 0.044 kc 0.08 0.08 0.08 0.08 ra —0.0132 -0.0132 -3.827E-04 —3.827E—04 X 0 0 0.4707245 0.4707245 Differential equations as entered by the user [1] d(Fa)/d(v) = ra [2] d(Fb)/d(v) = -ra - kc*Co*Fb/Ft [3] d(Fc)/d(v) = -2*ra Explicit equations as entered by the user [1] Kc = 0.025 [2] Ft: Fa+ Fb+ Fc [3] CO=03 [4] K = 0.044 [5] kc=.08 [6] ra = - (K‘Co)*(Fa/Ft- CoA2*Fb*FcA2/(Kc*Ft/\2)) [7] X=1- Fa/2.5 Solving for when X = 0.47, we get V = 1040 dm3 '0 203 416 624 332 1040 ...
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