Apparatus for the production of xylenes

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United States of America Patent

PATENT NO 9738573
APP PUB NO 20160185686A1
SERIAL NO

15058474

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Abstract

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In a process for producing para-xylene, a feed stream comprising C6+ aromatic hydrocarbons is separated into a toluene-containing stream, a C8 aromatic hydrocarbon-containing stream and a C9+ aromatic hydrocarbon-containing stream. The toluene-containing stream is contacted with a methylating agent to convert toluene to xylenes and produce a methylated effluent stream. Para-xylene is recovered from the C8 aromatic hydrocarbon-containing stream and the methylated effluent stream in a para-xylene recovery section to produce a para-xylene depleted stream, which is then contacted with a xylene isomerization catalyst under liquid phase conditions effective to isomerize xylenes in the para-xylene depleted stream and produce an isomerized stream. The C9+-containing stream with a transalkylation catalyst under conditions effective to convert C9+-aromatics to C8−-aromatics and produce a transalkylated stream, which is recycled together with the isomerized stream to the para-xylene recovery section.

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Patent Owner(s)

  • EXXONMOBIL CHEMICAL PATENTS INC.

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Abichandani, Jeevan S Houston, US 47 364
Andrews, Jeffrey L Houston, US 14 137
Molinier, Michel Houston, US 41 440
Stanley, Dennis J Houston, US 6 90
Tinger, Robert G Friendswood, US 54 332
Wagner, George J Tomball, US 11 177

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