NDLI: Profit maximization of the normal hexane recovery process through a thermal integration method

Content Provider	Springer Nature Link
Author	Kim, Hye Ran Kim, Dong Sun Cho, Jungho
Copyright Year	2012
Abstract	We developed a separation process that can minimize utility consumption in order to obtain normal hexane from crude raffinates for electronic-grade reagents. For the separation of normal hexane from the crude raffinate mixtures, a two-column configuration was selected. The first distillation column removes lighter constituents than normal hexane as a column top product, after which heavier constituents containing normal hexane are put into the middle of the second distillation column. This allows normal hexane with a purity of 95.5 wt% to be obtained from the top of the second distillation column by removing the constituents that are heavier than normal hexane as a second column bottom product. When both distillation columns are operated at approximately atmospheric pressure, it requires about 5.2 tons of steam per hour both for the reboiling heating source. However, when the operating pressure of the second distillation column is increased, the vapor stream coming out of the top of the second distillation column can be used as a heating medium for the reboiling source of the first distillation column. In this way, steam of only 3.1 tons per hour is required, potentially reducing the amount of steam used to 59.6% of the original amount.
Starting Page	1239
Ending Page	1245
Page Count	7
File Format	PDF
ISSN	02561115
Journal	Korean Journal of Chemical Engineering
Volume Number	29
Issue Number	9
e-ISSN	19757220
Language	English
Publisher	Springer US
Publisher Date	2012-03-21
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Normal Hexane Recovery Energy Saving Simulation NRTL Liquid Activity Coefficient Model Optimization Materials Science Industrial Chemistry/Chemical Engineering Biotechnology Catalysis
Content Type	Text
Resource Type	Article
Subject	Chemistry Chemical Engineering

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