Ether production with multi-stage reaction of olefins

Details Ether production with multi-stage reaction of olefins Ether production with multi-stage reaction of olefins

1992-01-06

1993-07-13

Cintins, Marianne M.

Organic compounds -- part of the class 532-570 series

Organic compounds

Oxygen containing

585329, 585331, C07C 4154

Patent

active

052275345

ABSTRACT:
A process for upgrading olefin feedstock containing a mixture of diene, iso-olefin and linear olefin to produce tertiary-alkyl ether and high octane gasoline components comprising iso-olefin. Product recovery is integrated between primary and secondary reaction stages.
In a preferred embodiment, a two stage etherification process employs a secondary solid acid regenerable catalyst bed to etherify and/or oligomerize unconverted diene, and optionally, iso-butene in the debutanizer overhead stream of a conventional MTBE primary reactor stage. Both stages can utilize a regenerable acid catalyst such as ZSM-5 or Zeolite Beta for etherification and to upgrade unconverted alkenes and methanol from the primary stage.

REFERENCES:
patent: 4377393 (1983-03-01), Schleppinghoff
patent: 4740632 (1988-04-01), Anderson et al.
patent: 4761504 (1988-08-01), Pujado
patent: 4826507 (1989-05-01), Harandi et al.
patent: 4868342 (1989-09-01), Verson
patent: 5015782 (1991-05-01), Harandi et al.

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