Technical Article

Enhance Aromatics Production

With Concurrent Reduction of Environmental Footprint - Part 1

Thumb_Axens_TA_Enhance aromatics production part 1_EN

Catalytic reforming processes produce olefin contaminants in aromatics streams via paraffin dehydrogenation side reactions. Operating catalytic reformers at higher severity results in higher yields of valuable aromatics, but it also results in higher olefins content in the reformate.

Olefins must be removed from:

  • C6-C7 aromatics streams to meet benzene product specifications,
  • and from C8+ aromatics streams to meet specifications for paraxylene recovery processes.

 

Historically, olefins have been removed from aromatics streams in treaters using activated clay to promote the acid alkylation of olefins with aromatic molecules, thereby producing heavier compounds further separated by fractionation.

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