Process for the manufacture of 1,2-dichloroethane and of at...

C - Chemistry – Metallurgy – 07 – C

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Details

C07C 17/02 (2006.01) C07C 4/04 (2006.01) C07C 17/25 (2006.01) C08F 14/06 (2006.01)

Patent

CA 2725067

Process for the manufacture of 1,2-dichlorethane and of at least one ethylene derivative compound which is different from 1,2-dichloroethane starting with a hydrocarbon source according to which : a) the hydrocarbon source is subjected to a simplified cracking which produces a mixture of products containing ethylene and other constituents; b) the said mixture of products is separated at least into a fraction enriched with compounds which are lighter than ethylene, containing part of the ethylene (fraction A), into a fraction enriched with ethylene (fraction B) and into a heavy fraction (fraction C); c) one fraction among fraction A and fraction B is conveyed to the manufacture of 1,2-dichloroethane and optionally of any compound derived there from, optionally after having been subjected to an acetylene hydrogenation, while the other fraction is conveyed to the manufacture of at least one ethylene derivative compound manufactured directly starting with ethylene which is different from 1,2-dichloroethane and optionally of any compound derived there from.

La présente invention concerne un procédé pour la fabrication de 1,2-dichloroéthane et d'au moins un composé dérivé de l'éthylène qui est différent du 1,2-dichloroéthane, à partir d'une source d'hydrocarbure. Selon le procédé, a) la source d'hydrocarbure est soumise à un craquage simplifié qui donne un mélange de produits contenant de l'éthylène et d'autres constituants; b) ledit mélange de produits est séparé au moins en une fraction enrichie de composés qui sont plus légers que l'éthylène, contenant une partie de l'éthylène (fraction A), en une fraction enrichie avec de l'éthylène (fraction B) et en une fraction lourde (fraction C); c) une fraction parmi la fraction A et la fraction B est acheminée pour servir à la fabrication de 1,2-dichloroéthane et facultativement d'un quelconque composé dérivé de celui-ci, éventuellement après avoir été soumise à une hydrogénation à l'acétylène, pendant que l'autre fraction est acheminée pour servir à la fabrication d'au moins un composé dérivé de l'éthylène préparé directement à partir de l'éthylène, qui est différent du 1,2-dichloroéthane et facultativement d'un quelconque composé dérivé de celui-ci.

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