公开(公告)号：ES2181613T3

公开(公告)日：2003-03-01

申请号：ES00100058

申请日：2000-01-05

Applicant: BASF AG

Inventor： STREICHER HARALD DR ,  BURST WOLFRAM ,  DAUWEL JURGEN ,  KOPPENHOFER JURGEN

IPC: C07C29/80 ,  C07C31/22

Abstract: Production of highly pure phytantriol (I) comprises rectification of (I) in a fine vacuum in columns with ordered metal fabric packing and duct distributors with ≥ 500 dripping points/m at an angle of 90 degrees to the layer of fabric just below them. There are 2 or more, 20-100 mm high packing elements with layers of fabric at 90 degrees to one another. Strictly adiabatic rectification with absolute exclusion of air is used. Production of highly pure phytantriol (I) comprises rectification of (I) contaminated with lower and/or higher boiling by-products in a fine vacuum in columns containing metal fabric packing with ordered structure. The liquid is distributed with duct distributors with ≥ 500 dripping points/m . The ducts are at an angle of 90 degrees to the layer of fabric directly below them in the packing. There are 2 or more packing elements with a height of 20-100 mm and layers of fabric at 90 degrees to one another, below the distributor. The process is operated with absolute exclusion of air. Strictly adiabatic rectification is used.