Removing water from tertiary butyl alcohol

Details Removing water from tertiary butyl alcohol Removing water from tertiary butyl alcohol

1979-06-25

1980-12-16

Bascomb, Jr., Wilbur L.

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

Organic compounds

Oxygen containing

203 18, 203 44, 203 69, 203 74, 203 75, 203 78, 203DIG13, B01D 340, C07C 2930

Patent

active

042399262

ABSTRACT:
Isobutane is oxidized to provide a debutanized oxidate comprising tertiary butyl alcohol, acetone, water and other byproducts including high boiling products. Water is removed by extractive distillation using a combination of water and xylene as the extractant. The molar amount of recycled water is greater than the amount of water to be removed from the oxidate. By thus recirculating water through the decantation zone the acetone is satisfactorily coextracted from the butyl alcohol in such a manner that a stream of acetone and a stream of water, as well as the desired dry stream of tertiary butyl alcohol can be withdrawn. If the water is not recycled, the acetone will concentrate in the upper section of the distillation zone and reduce the volatility of water, thereby inhibiting the water removal from the tertiary butyl alcohol.

REFERENCES:
patent: 1950889 (1934-03-01), Hartman
patent: 2537115 (1951-01-01), Scheibel
patent: 2591672 (1952-04-01), Catterall
patent: 2751337 (1956-06-01), Goddin et al.

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