LightcomponentsDirectA2EDCEDCchlorinationpurificationcrackingH2O,heavyCH-CHa+componentsVC+Air or O2HClVCOxychlorinationpurificationFig. 9-3 Process flow scheme of equilibrium oxychlorination method
Fig. 9-3 Process flow scheme of equilibrium oxychlorination method Direct chlorination EDC purification EDC cracking Light components H2O, heavy components Air or O2 Oxychlorination VC purification
9.4Vinyl chloride production by equilibriumoxychlorination methodDirect chlorination of etheneReaction mechanismMainreactionCH2=CH2+C12-→CH2CI-CH2CI+201kJSide reactionsCH2=CH2+CI2CH2=CHCI+HC?CH,CI-CH,CI+C12→CHCI-CH,C2+HCICH2=CH,+HCI→CH3-CH,CICH2CHCI+CI2→CH2-CCI,+HCICH,CI-CH,CI2+CI2→CHCI2-CHCI2+HC!
9.4 Vinyl chloride production by equilibrium oxychlorination method Reaction mechanism Main reaction Side reactions 一、Direct chlorination of ethene