Isopropyl alcohol purification process

Details Isopropyl alcohol purification process Isopropyl alcohol purification process

1986-12-19

1988-08-09

Spear, Frank

Liquid purification or separation

Processes

Liquid/liquid solvent or colloidal extraction or diffusing...

B01D 1104

Patent

active

047626160

ABSTRACT:
A process for the purification of the crude isopropyl alcohol product of propylene hydration reactions. Crude isopropyl alcohol products, which comprise isopropyl alcohol, diisopropyl ether and polymeric impurities, are subjected to a specified sequence of multiple dilution and phase separation steps which serve to extract a substantial portion of the product's diisopropyl ether and polymeric impurities. The invention is particularly useful in removing odiferous sulfur-containing impurities from the products of indirect propylene hydration processes which involve the reaction of propylene with sulfuric acid to produce isopropyl sulfate followed by hydrolysis of the sulfate to isopropyl alcohol.

REFERENCES:
patent: 1712475 (1929-05-01), Buc
patent: 2510806 (1950-06-01), Egberrs et al.
patent: 2994720 (1961-08-01), Hakala et al.

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