In the feedstock preparation section of a plant manufacturing natural gasoline, isopentane is removed from butane-free gasoline. Assume for purposes of simplifi- cation that the process and components are as shown in Figure E12.5. What fraction of the butane-free gasoline is passed through the isopentane tower? Detailed steps will not be listed in the analysis and solution of this problem. The process is in the steady state and no reaction occurs. Isopentane side stream ti-CaHız 100%

Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN:9781259696527
Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
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In the feedstock preparation section of a plant manufacturing natural gasoline,
isopentane is removed from butane-free gasoline. Assume for purposes of simplifi-
cation that the process and components are as shown in Figure E12.5. What fraction
of the butane-free gasoline is passed through the isopentane tower? Detailed steps
will not be listed in the analysis and solution of this problem. The process is in the
steady state and no reaction occurs.
Isopentane side streom
i-CSH12 100%
Overall
system
boundary
Iso-
De-
butanizer
pentane
tower
n-CSH12 100%
Mix
E 100 kg Butone free
feed
n-C3H12 80%
i-CSH12 20%
To natural gas-
oline plant P
90% n-CgH12
10% i-CSH12
Mix
Figure E12.5
Transcribed Image Text:In the feedstock preparation section of a plant manufacturing natural gasoline, isopentane is removed from butane-free gasoline. Assume for purposes of simplifi- cation that the process and components are as shown in Figure E12.5. What fraction of the butane-free gasoline is passed through the isopentane tower? Detailed steps will not be listed in the analysis and solution of this problem. The process is in the steady state and no reaction occurs. Isopentane side streom i-CSH12 100% Overall system boundary Iso- De- butanizer pentane tower n-CSH12 100% Mix E 100 kg Butone free feed n-C3H12 80% i-CSH12 20% To natural gas- oline plant P 90% n-CgH12 10% i-CSH12 Mix Figure E12.5
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