[問題] 化工問題!

[sally1137 (sally)]

Pure water is to be used to extract acetic acid from 400kg of a feed solution
containing 25 wt% acetic acid in isopropl ether.Use equilibrium data from
Appendix A.3.
a. If 400kg of water is used,calculate the percent recovery in the water
solution in a one-stage process.
b.If a multiple three-stage system is used and133.3kg fresh water is used in
each stage,calculate yhe overall percent recovery of the acid in
the total outlet water.


Water layer (wt%)                              isopropyl ether(wt%)
acetic acid     water   isopropyl ether         acetic acid     water   isopropyl ether
0       98.8    1.2             0       0.6     99.4
0.69    98.1    1.2             0.18    0.5     99.3
1.41    97.1    1.5             0.37    0.7     98.9
2.89    95.5    1.6             0.79    0.8     98.4
6.42    91.7    1.9             1.93    1       97.1
13.3    84.4    2.3             4.82    1.9     93.3
25.5    71.1    3.4             11.4    3.9     84.7
36.7    58.9    4.4             21.6    6.9     71.5
44.3    45.1    10.6            31.1    10.8    58.1
46.4    37.1    16.5            36.2    15.1    48.7


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