公开(公告)号：EA000257B1

公开(公告)日：1999-02-25

申请号：EA199700192

申请日：1996-02-27

Applicant: BASF AG

Inventor： MERKLE HANS RUPERT ,  FRETSCHNER ERICH ,  SCHROEDER JURGEN

IPC: C07D231/12 ,  C07D521/00

公开(公告)号：BR0008815A

公开(公告)日：2001-12-18

申请号：BR0008815

申请日：2000-02-28

Applicant: BASF AG

Inventor： THIEL JOACHIM ,  SCHROEDER JURGEN ,  NESTLER GERHARD

IPC: B01D5/00 ,  B01D3/14 ,  B01D3/16 ,  B01D3/20 ,  B01D3/22 ,  B01D3/26 ,  B01D3/32 ,  C07C51/43 ,  C07C51/44 ,  C07C51/487 ,  C07C51/50 ,  C07C57/05 ,  C07C57/055 ,  C07C57/07 ,  C07C57/075

Abstract: In a process for the fractional condensation of an acrylic acid-containing product gas mixture of a gas-phase partial oxidation of C3 precursors of acrylic acid with molecular oxygen under heterogeneous catalysis, the separation column used contains both dual-flow trays and hydraulically sealed cross-flow trays as baffles having separation activity.