Removal of chloroprenes from ethylene dichloride

Details Removal of chloroprenes from ethylene dichloride Removal of chloroprenes from ethylene dichloride

1975-05-22

1977-11-29

Gantz, Delbert E.

Distillation: processes, separatory

With chemical reaction

Including step of adding catalyst or reacting material

260652P, 203 31, C07C 1738

Patent

active

040604608

ABSTRACT:
Process is provided for removal of chloroprenes as impurities from ethylene dichloride streams formed in the production of vinyl chloride by the thermal cracking of ethylene dichloride. The ethylene dichloride stream is subjected to distillation in a distillation zone to which free chlorine gas is introduced, thereby chlorinating the chloroprenes contained therein and forming higher boiling chlorocarbons as reaction products. The higher boiling chlorocarbons, together with ethylene dichloride, may be removed as bottoms and passed to a second distillation zone for separation of ethylene dichloride from the higher boiling impurities, thereby producing a substantially pure ethylene dichloride which may be recycled to the cracking step.

REFERENCES:
patent: 2748176 (1976-05-01), Morris

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