公开(公告)号：CA2657739A1

公开(公告)日：2008-01-24

申请号：CA2657739

申请日：2007-07-16

Applicant: BASF AG

Inventor： SCHINDLER GOETZ-GEORG ,  HOLTMANN THOMAS ,  BOEHLING RALF ,  ALTENHOFF ANSGAR GEREON ,  CRONE SVEN ,  DEGEN GEORG ,  BUERKLE JOCHEN ,  ROHDE WOLFGANG ,  SCHMITT MARKUS

IPC: C07C29/09 ,  C07C5/333 ,  C07C11/06 ,  C07C11/08 ,  C07C31/10 ,  C07C31/12 ,  C07C51/09 ,  C07C53/02 ,  C07C53/08 ,  C07C67/04 ,  C07C69/06 ,  C07C69/14

Abstract: A process for preparing alkanols (I) selected from the group consisting o f isopropanol and 2-butanol from the corresponding alkanes (II) selected fro m the group consisting of propane and n-butane, comprising the steps of: A) a use gas stream a comprising the alkane (II) is provided; B) use gas stream a comprising the alkane (II) is fed into a dehydrogenation zone and the alk ane (II) is subjected to a dehydrogenation to the alkene (III), to obtain a product gas stream b comprising the alkene (III), unconverted alkane (II), w ith or without high boilers, steam, hydrogen and low boilers; C) product gas stream b is at least compressed, and product gas stream b is optionally sep arated into an aqueous phase c1, a phase c2 which comprises the alkene (III) and the alkane (II), with or without high boilers, and a gas phase c3 compr ising hydrogen and low boilers; D) product gas stream b or the phase c2 comp rising alkene (III) and alkane (II) is reacted in an esterification zone wit h an organic acid (IV) to obtain a product mixture d comprising the correspo nding alkyl ester (V) of the organic acid and the unconverted alkane (II); E ) a gas stream e1 comprising alkane (II) is removed from the product mixture d and is optionally recycled into the dehydrogenation zone, and a product m ixture e2 comprising the alkyl ester is obtained; F) product mixture e2 comp rising the alkyl ester is reacted in a deesterification zone with water to g ive a product mixture f comprising the alkanol (I) and the organic acid (IV) ; G) the alkanol (I) and the organic acid (IV) are removed from the product mixture f, and the organic acid is optionally recycled into the esterificati on zone.