公开(公告)号：DK143697C

公开(公告)日：1982-03-08

申请号：DK123774

申请日：1974-03-07

Applicant: HOECHST AG

Inventor： RECHMEIER G ,  MITTLER W ,  WESSELMANN R

IPC: C07C17/00 ,  C07C17/25 ,  C07C21/06 ,  C07C67/00 ,  C07C17/34

Abstract: Production of vinyl chloride, wherein 1,2-dichloroethane is evaporated under pressure in an evaporation stage and resulting 1,2-dichloroethane in vapor form is thermally cracked at a temperature substantially within the range 450 DEG -650 DEG C with the resultant formation of vinyl chloride.

公开(公告)号：SE7804878L

公开(公告)日：1978-10-29

申请号：SE7804878

申请日：1978-04-27

Applicant: HOECHST AG

Inventor： LEGUTKE G ,  RECHMEIER G ,  SCHOLZ H ,  SCHUCHARDT K ,  HOLLER E ,  LIESENFELDER G

IPC: B01J27/00 ,  C07B61/00 ,  C07C17/00 ,  C07C17/156 ,  C07C19/045 ,  C07C67/00 ,  C07C17/15 ,  C07C19/02

Abstract: 1,2-dichloroethane is made by subjecting ethylene to an oxychlorination reaction with hydrogen chloride and a gas containing molecular oxygen in gas phase, at elevated temperature and in contact with a fluidized bed copper-II-chloride catalyst on a carrier, wherein the reaction gases are cooled under pressure in two condensation stages, condensed 1,2-dichloroethane and water are removed and the bulk of unreacted starting gas and inert gas are recycled. More specifically the reaction gases are delivered to a third condensation stage and cooled therein under pressure down to a temperature within the range 5 DEG to 18 DEG C. and to the extent necessary for the recycle gas to contain 0.5 to 3 volume % of 1,2-dichloroethane. Next, the recycle gas is directly admixed upstream of the reactor, with a quantity of pure oxygen necessary to replace consumed oxygen and re-establish an oxygen content of 12 to 25 volume % therein.