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US 2019/0169091 A1Published application
Processes and apparatuses for methylation of aromatics in an aromatics complex
AssigneeUop LLC
InventorsTimur V. Voskoboynikov, Deng-Yang Jan, John Q. Chen, Edwin P. Boldingh
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Abstract
This present disclosure relates to processes and apparatuses for methylation of aromatics in an aromatics complex for producing a xylene isomer product. More specifically, the present disclosure relates to a process for producing para-xylene by the selective methylation of toluene and/or benzene in an aromatics complex.
Claims20
A process for the methylation of toluene, comprising:
- passing a toluene feed stream and three methanol feed streams to a reaction zone to produce a reaction zone product stream;
- separating the reaction zone product stream and passing the reaction zone product stream to a stripper to produce a vent gas stream, an overhead stream comprising toluene and xylenes, a side cut comprising xylenes and a bottoms stream comprising C9+, specifically containing diphenylmethane components;
- and
- passing the C9+ stream to a transalkylation zone comprising a transalkylation catalyst comprising at least one MWW or mordenite type zeolite.
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(canceled)
An apparatus for the methylation of toluene, comprising:
- a plurality of lines comprising toluene in direct communication with a reaction zone wherein the reaction zone is also coupled to a line comprising the reaction zone product stream;
- the reaction zone product stream is in direct communication with a stripper to produce a line comprising a vent gas stream, an overhead line comprising toluene and xylenes, a side cut line comprising xylenes and a bottoms line comprising C9+, specifically containing diphenylmethane components;
- and
- the bottoms line comprising C9+ stream is in direct communication with a transalkylation zone comprising a transalkylation catalyst comprising at least one MWW or mordenite type zeolite.
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Dependencies are inferred from the claim text.