公开(公告)号：DE3140447A1

公开(公告)日：1983-04-21

申请号：DE3140447

申请日：1981-10-12

Applicant: BASF AG

Inventor： HEBGEN WERNER DIPL PHYS DR ,  DANZ ECKEHARD DIPL CHEM DR ,  KROME GERD DIPL CHEM DR ,  STAHNECKER ERHARD DIPL CHEM DR

IPC: C07C17/38 ,  C07C17/34 ,  C07C19/045 ,  C07C21/06

Abstract: Process for work-up of unconverted 1,2-dichloroethane in the preparation of vinyl chloride in which first the hydrogen chloride and then the vinyl chloride is separated from the gas mixture from the cracking furnace, and the remaining liquid stream is then let down, leading to separation into gaseous and liquid portions. The gaseous portions are treated with chlorine and then separated by distillation. The liquid portions are passed directly into the 1,2-dichloroethane separation stage.

公开(公告)号：DE3140892A1

公开(公告)日：1983-04-28

申请号：DE3140892

申请日：1981-10-15

Applicant: BASF AG

Inventor： HEBGEN WERNER DIPL PHYS DR ,  DANZ ECKEHARD DIPL CHEM DR ,  KROME GERD DIPL CHEM DR ,  STAHNECKER ERHARD DIPL CHEM DR

IPC: C07C17/25 ,  C07C21/06 ,  C07C17/34

Abstract: A process for the preparation of vinyl chloride by vaporizing liquid 1,2-dichloroethane, thermally cracking the 1,2-dichloroethane and cooling the hot reaction mixture by means of cooled and condensed portions of the reaction mixture, wherein a defined amount of the 1,2-dichloroethane is taken off as liquid in or downstream of the vaporizer and mixed with a defined amount of the cooled liquid portion of the reaction mixture, the mixture is distilled and the constituents taken off the top of the distillation column are mixed with the liquid 1,2-dichloroethane upstream of the vaporizer while the constituents taken off the bottom of the distillation column are worked up by distillation.

公开(公告)号：DE3147310A1

公开(公告)日：1983-06-01

申请号：DE3147310

申请日：1981-11-28

Applicant: BASF AG

Inventor： HEBGEN WERNER DIPL PHYS DR ,  DANZ ECKEHARD DIPL CHEM DR ,  BIRNBAUM EBERHARD ING GRAD ,  KROME GERD DIPL CHEM DR ,  STAHNECKER ERHARD DIPL CHEM DR ,  SCHUMACHER KLAUS DIPL ING

IPC: C07C17/25 ,  C07C21/06 ,  C07C17/34

Abstract: Process for heat recovery from cleavage gases in the preparation of vinyl chloride by cleavage of 1,2-dichloroethane, wherein cleavage of the 1,2-dichloroethane is carried out at a pressure at which the cleavage gases leave the reactor under a pressure in the range from 5 to 30 bar, the cleavage gases are quenched by direct cooling and the resulting vapour is passed through heat exchangers.