Method for recovering alkanols from aqueous HBr-solutions

Details Method for recovering alkanols from aqueous HBr-solutions Method for recovering alkanols from aqueous HBr-solutions

1998-04-03

1999-11-16

Leary, Louise N.

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

Organic compounds

Oxygen containing

568724, 568725, 568726, C07C 2710, C07C 3768

Patent

active

059861495

ABSTRACT:
The present invention provides processes for recovering alkanols from fluids comprising the alkanol and aqueous hydrobromic acid without forming excessive amounts of alkyl bromide. In certain aspects of the invention, there are provided distillation systems wherein a fluid comprising an alkanol and aqueous hydrobromic acid is introduced into a distillation column at a point between the bottom and the top of the column to thereby separate the alkanol and the hydrobromic acid without causing the production of a significant amount of alkyl bromide. A process for separating an alkanol from aqueous hydrobromic acid which comprises (a) refluxing aqueous HBr in a fractionating column (10) having a port (15) located between the top (19) and bottom (11) ends of the column and in fluid communication with the column; (b) feeding into the column through the port a first fluid comprising an alkanol and aqueous HBr; (c ) recovering from the top end of the column a second fluid comprising at least 50% of the alkanol; and (d) recovering at the bottom end of the column a third fluid comprising at least 50% of the aqueous HBr.

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