Process for producing vinyl chloride

Claim 1

THE PROCESS FOR PRODUCING VINYL CHLORIDE BY THE SIMULTANEOUS CHLORINE SUBSTITUTION OF ETHYLENE AND THERMODECOMPOSITION OF ETHYLENE DICHLORIDE COMPRISING THE STEPS (1) INTRODUCING A GASEOUS MIXTURE CONTAINING ETHYLENE, CHLORINE AND ETHYLENE DICHLORIDE TO A FIRST REACTION ZONE AT A MOL RATIO OF ETHYLENE TO CHLORINE TO ETHYLENE DICHLORIDE OF 3-5:1:0.2-2.0, (2) SUBJECTING SAID GASEOUS MIXTURE TO SIMULTANEOUS CHLORINE SUBSTITUTION OF ETHYLENE AND THERMODECOMPOSITION OF SAID ETHYLENE DICHLORIDE AT A REACTION TEMPERATURE OF 450*C. TO 550*C. AND A COMTACT TIME OF 0.05 TO 0.5 SECOND IN A FLUIDIZED BED IN THE FIRST REACTION ZONE THEREBY FORMING A PRODUCT CONTAINING VINYL CHLORIDE, HYDROGEN CHLORIDE AND UNREACTED ETHYLENE, SAID FLUIDIZED BED COMPRISING A HEAT CARRIER SELECTED FROM THE GROUP CONSISTING OF SAND, SILICON CARBIDE, GLASS POWDER, PUMICE STONE, FIRE BRICK, ACTIVE CARBON, SILICA GEL AND ALUMINA FLUIDIZED BY SAID GASEOUS MIXTURE, (3) ABSORBING VINYL CHLORIDE FROM SAID PRODUCT WITH A SOLVENT SOLUTION IN AN ABSORBING ZONE, (4) MIXING OXYGEN AND ETHYLENE WITH THE OUTLET GAS OF THE ABSORBING ZONE CONTAINING HYDROGEN CHLORIDE AND UNREACTED ETHYLENE, (5) SUBJECTING A GASEOUS MIXTURE FROM THE STEP 4 TO A CATALYTIC OXYCHLORINATION IN A SECOND REACTION ZONE TO FORM A PRODUCT CONTAINING ETHYLENE DICHLORIDE, VINYL CHLORIDE, CHLORINATED BY-PRODUCT, UNREACTED HYDROGEN CHLORIDE, WATER AND UNREACTED ETHYLENE AND (6) CIRCULATING SAID PRODUCT TO THE FIRST REACTION ZONE WHEREBY ETHYLENE DICHLORIDE IN DECOMPOSED INTO VINYL CHLORIDE SIMULTANEOUSLY WITH A PRODUCTION OF VINYL CHLORIDE FROM ETHYLENE AND CHLORINE.