公开(公告)号：EP2323973A1

公开(公告)日：2011-05-25

申请号：EP09781542.7

申请日：2009-08-06

Applicant: BASF SE

Inventor： PENZEL, Ulrich ,  MATTKE, Torsten ,  WÖLFERT, Andreas ,  JACOBS, Johannes ,  CHENG, Tsung-Chieh ,  HEINEN, Kerstin ,  STROEFER, Eckhard ,  MAIXNER, Stefan ,  MACKENROTH, Wolfgang ,  TRAGUT, Christian ,  THIELE, Kai ,  WON, Myung Un

IPC: C07C263/10

CPC classification number: C07C263/10 ,  C07C265/14

Abstract: The invention relates to a method for producing isocyanates through reaction of the corresponding amines with phosgene in the liquid phase, optionally in the presence of at least one inert medium, in which first the amine and the phosgene are mixed in a mixing chamber (1) to form a reaction mixture and the reaction mixture is fed to a reactor, wherein the amine is added through an opening (3) that is disposed coaxially to the mixing chamber (1) and wherein the phosgene is added through feed openings (5) in at least two planes (7, 9) disposed perpendicular to the axis (11) of the mixing chamber (1), or the phosgene is added through the opening (3) that is coaxial to the mixing chamber and the amine is added through the feed openings (5) in at least two planes (7, 9) disposed perpendicular to the axis (11) of the mixing chamber (1). At least one plane (9) is disposed upstream in the main flow direction of the reaction mixture and at least one plane (7) is disposed downstream relative to the opening (3) disposed coaxially to the mixing chamber (1). The average residence time of the reaction mixture in the mixing chamber (1) is no more than 20 ms.

公开(公告)号：EP2323973B1

公开(公告)日：2012-03-21

申请号：EP09781542.7

申请日：2009-08-06

Applicant: BASF SE

Inventor： PENZEL, Ulrich ,  MATTKE, Torsten ,  WÖLFERT, Andreas ,  JACOBS, Johannes ,  CHENG, Tsung-Chieh ,  HEINEN, Kerstin ,  STROEFER, Eckhard ,  MAIXNER, Stefan ,  MACKENROTH, Wolfgang ,  TRAGUT, Christian ,  THIELE, Kai ,  WON, Myung Un

IPC: C07C263/10

CPC classification number: C07C263/10 ,  C07C265/14

Abstract: The invention relates to a method for producing isocyanates through reaction of the corresponding amines with phosgene in the liquid phase, optionally in the presence of at least one inert medium, in which first the amine and the phosgene are mixed in a mixing chamber (1) to form a reaction mixture and the reaction mixture is fed to a reactor, wherein the amine is added through an opening (3) that is disposed coaxially to the mixing chamber (1) and wherein the phosgene is added through feed openings (5) in at least two planes (7, 9) disposed perpendicular to the axis (11) of the mixing chamber (1), or the phosgene is added through the opening (3) that is coaxial to the mixing chamber and the amine is added through the feed openings (5) in at least two planes (7, 9) disposed perpendicular to the axis (11) of the mixing chamber (1). At least one plane (9) is disposed upstream in the main flow direction of the reaction mixture and at least one plane (7) is disposed downstream relative to the opening (3) disposed coaxially to the mixing chamber (1). The average residence time of the reaction mixture in the mixing chamber (1) is no more than 20 ms.