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Aromatic hydrocarbon recovery by extractive distillation, extraction and plural distillations

Thompson Herbert L
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TLDR
In this article, a C6-C8 ANPHTHA FRACTION is combined with a combination of PRELIMINARY FRACTION, EXTRACTIVE DISTILLATION of the FRACTIONATION OVERHEAD, and SOLVENT EXGTRACTION of FRACTION BOTTOMS.
Abstract: 
AROMATIC HYDROCARBONS ARE SEPARATED FROM A MIXTURE OF AROMATICS AND NON-AROMATICS, SUCH AS A C6-C8 ANPHTHA FRACTION, BY A COMBINATION OF PRELIMINARY FRACTIONATION, EXTRACTIVE DISTILLATION OF THE FRACTIONATION OVERHEAD, AND SOLVENT EXGTRACTION OF THE FRACTIONATION BOTTOMS. D R A W I N G

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Separation of hydrocarbon mixtures

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Aromatics separation process and method of retrofitting existing equipment for same

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Combination of extractive distillation and liquid extraction process for separation of a hydrocarbon feed mixture

R Lengemann, +1 more
TL;DR: In this article, an extractive distillation zone is used in combination with a liquid phase extraction zone to provide relatively highly aromatic heavy and light extracts and a relatively aromatic-free raffinate stream.