liquid mixture containing 30 mole% benzene (B), 25% toluene (T), and 45% Xylene (X) is fed at a rate of 1275 kmol/h to a distillation unit consisting of two columns. The bottoms product (B1) from the first column is to contain 99 mole% X and no B, and 98% of the X in the feed is to be recovered in this stream. The overhead product (P1) from the first column is fed to a second column. The overhead product (P2) from the second column contains 99 mole% B and no X. The benzene recovered in this stream represents 96% of the B in the feed to this column. a. Draw and completely label the above process. b. Perform the degree of freedom analysis c. Calculate the molar flow rates (kmol/h) and component mole fractions in each product stream from both columns. (P1=707, B1=568, P2=371, bottom product of second column, B2=337)(mol fraction of overhead product leaving distillation 1; B=0.541, X=0.0162, T=0.4428. Mol fraction of bottom product leaving distillation 2; B=0.0455, X=0.0341, T=0.9204)
liquid mixture containing 30 mole% benzene (B), 25% toluene (T), and 45% Xylene (X) is
fed at a rate of 1275 kmol/h to a distillation unit consisting of two columns. The bottoms
product (B1) from the first column is to contain 99 mole% X and no B, and 98% of the X in
the feed is to be recovered in this stream. The overhead product (P1) from the first column is
fed to a second column. The overhead product (P2) from the second column contains 99 mole% B and no X. The benzene recovered in this stream represents 96% of the B in the feed to this column.
a. Draw and completely label the above process.
b. Perform the degree of freedom analysis
c. Calculate the molar flow rates (kmol/h) and component mole fractions in each product
stream from both columns. (P1=707, B1=568, P2=371, bottom product of second
column, B2=337)(mol fraction of overhead product leaving distillation 1; B=0.541,
X=0.0162, T=0.4428. Mol fraction of bottom product leaving distillation 2; B=0.0455,
X=0.0341, T=0.9204)
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