公开(公告)号：RU2181721C2

公开(公告)日：2002-04-27

申请号：RU98111932

申请日：1996-11-05

Applicant: BASF AG

Inventor： BESSLING BERND ,  TSEK SEBASTIAN ,  PLJUKKHAN JURGEN ,  MAJER TOMAS ,  LEFFLER UL RIKH ,  SHPIGEL GJUNTER ,  BALLENVEG RUBENS ,  BRUDI GERKHARD ,  GIZEL BERG KLAUS ,  KHIL PREKHT LUTTS ,  TERJUNG VINFRID ,  AUEHR KHAJNTS ,  POL T AKSEL VERNER ,  SHOLL SHTEFAN

IPC: B01D3/00 ,  B01D3/16 ,  C07D301/32 ,  C07D303/02 ,  C07D303/04

Abstract: chemical engineering. SUBSTANCE: method involves distillation of initial medium in column and withdrawal of (i) pure ethylene oxide in liquid or gas state from the top section of column and through lateral tap-off disposed in the concentrating section of column and (ii) bottom product. In emergency situations, a fire-extinguishing means is supplied to the column. Process is characterized by that the distillation column is operated at pressure 2 to 10 bar and temperature from 20 to 180 C. Mixture is passed through several in-series disposed zones with structured metal sheet inserts or charge beds arranged within the column, from which at least one zone is connected to a water source. Water functions as ethylene oxide-miscible fire- extinguishing means, which raises pressure in the column by 0.01 to 4 bar. EFFECT: optimized process parameters. 8 cl, 1 dwg