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US 4,973,780 AGranted
Alkylation of benzene in a moving bed
AssigneeLummus Crest, Inc.
InventorsRoger C. Johnson, Daniel McCarthy, Andrei Rhoe
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Abstract
An improved process for the alkylation of benzene in the presence of an alkylation catalyst. The catalyst bed may be caused to move in a direction countercurrent to the movement of the benzene and olefin, or a portion of the catalyst bed is periodically removed and replaced. A regeneration step, whereby the catalyst is heated in a controlled oxygen atmosphere in order to reactivate the catalyst, is also described.
Claims10
A process for alkylating benzene with an olefin in an alkylation reactor containing at least one bed of alkylation catalyst, comprising:
- introducing a feed of benzene and olefin at a first end of said bed;
- monitoring the temperature of said bed to determine deactivated portions of said bed;
- removing an inactive portion of said catalyst from the first end of based on said monitoring of temperature of said bed;
- and
- adding an active portion of said catalyst to a second end of said bed, said second end being an end opposite to said first end of said bed.
2 more elements
Dependencies are inferred from the claim text.