Process for product separation in the production of di-isopropyl

Details Process for product separation in the production of di-isopropyl Process for product separation in the production of di-isopropyl

1991-06-07

1992-05-12

Cintins, Marianne

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

Organic compounds

Oxygen containing

568694, 568699, C07C 4105, C07C 4138

Patent

active

051130246

ABSTRACT:
In the instant invention the effluent from the DIPE reactor is separated in a novel separation process that includes, in one embodiment, two extraction steps serially combined to initially separate IPA from the reaction products by extraction with water. The aqueous IPA extract is separated in a second extraction step carried out using the C.sub.3 hydrocarbon feedstream to the process as extractor. To effectuate the separation of aqueous IPA, the second extraction is carried out at a temperature higher than that of the first extraction step. The organic phase from the first extraction containing DIPE, C.sub.3 hydrocarbons and water is separated in a splitter to provide dry DIPE as product. In another embodiment dry DIPE is produced by an initial aqueous extraction of the reaction effluent followed by distillation to separate C.sub.3 hydrocarbons and water overhead and DIPE as a bottom stream.

REFERENCES:
patent: 4214107 (1980-07-01), Chang
patent: 4857664 (1989-08-01), Huang
patent: 4906787 (1990-03-01), Huang
patent: 4981491 (1991-01-01), Harandi et al.
patent: 5011506 (1991-04-01), Harandi et al.

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