公开(公告)号：US3891511A

公开(公告)日：1975-06-24

申请号：US27236672

申请日：1972-07-17

Applicant: BASF AG

Inventor： DANNEIL AXEL ,  FLICKINGER ERICH ,  GRAEFJE HEINZ ,  PLASS REINHOLD ,  SCHNUR RUDOLF

IPC: C07C29/80 ,  C07C31/20 ,  B01D3/00

CPC classification number: C07C29/80 ,  C07C31/207

Abstract: Production of very pure butanediol-1,4 by separating in column 1 crude butanediol into a fraction A containing butanediol and lower boiling components and a fraction B containing higher boiling components, separating fraction A in column 2 into an overhead and a bottoms product consisting of very pure butanediol and separating fraction B in column 3 into butanediol of lower purity and components of higher boiling point.

Abstract translation: 通过在第1列粗丁二醇中分离成含有丁二醇和低沸点组分的级分A和含较高沸点组分的级分B，生产非常纯的丁二醇-1,4，将第2列中的馏分A分离成塔顶馏出物和由 非常纯的丁二醇和第3列中的分离馏分B为较低纯度的丁二醇和较高沸点的组分。