Do Lab 12 in this chapter's appendix, but for three-stage systems. Operation is at (293 mathrm{~K}, 1.0

Question:

Do Lab 12 in this chapter's appendix, but for three-stage systems. Operation is at $$293 \mathrm{~K}, 1.0 \mathrm{~atm}, \mathrm{~F}=10 \mathrm{kmol} / \mathrm{h}$$ and is $$10 \mathrm{~mol} \%$$ carbon tetrachloride and $$90 \mathrm{~mol} \%$$ acetic acid. Entering solvent is pure triethylamine.

a. Simulate a three-stage crossflow system with $$30 \mathrm{kmol} / \mathrm{h}$$ total pure solvent with $$10.0 \mathrm{kmol} / \mathrm{h}$$ fed to each stage. Find total and component flow rates $$(\mathrm{kmol} / \mathrm{h})$$ in the four outlet streams. Calculate fraction of entering carbon tetrachloride that is extracted.

b. Simulate a three-stage countercurrent system using three decanters. $$10 \mathrm{kmol} / \mathrm{h}$$ of pure solvent is used. Find total and component flow rates $$(\mathrm{kmol} / \mathrm{h})$$ in the two outlet streams. Calculate fraction of entering carbon tetrachloride that is extracted.

c. Repeat three-stage countercurrent system with different flow rates of pure solvent until fraction of entering carbon tetrachloride extracted is same as in part

a. Which process uses less solvent?

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