Method for refining dicyclopentadiene

C - Chemistry – Metallurgy – 07 – C

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C07C 7/04 (2006.01) C07C 13/61 (2006.01)

Patent

CA 2748247

A first method for refining dicyclopentadiene of the present invention is characterized in that the method separates and recovers dicyclopentadiene by distilling the crude dicyclopentadiene that contains dicyclopentadiene and is obtained by removing a C5 fraction and a BTX fraction from the reaction product obtained by dimerization reaction of the cracked gasoline by-produced in an ethylene plant that uses as feed stock a C2 fraction, a C3 fraction and a C4 fraction. A second method for refining dicyclopentadiene of the present invention is characterized in that the dicyclopentadiene-containing fraction refined by distillation is brought into contact with an inert gas or a hydrocarbon gas having 1 to 3 carbon atoms.

L'invention porte sur un procédé pour le raffinage de dicyclopentadiène, qui est caractérisé par l'élimination d'une fraction C5 et d'une fraction BTX d'un produit réactionnel produit par une réaction de dimérisation d'une essence craquée qui est un sous-produit dans une installation de production d'éthylène utilisant une fraction C2, une fraction C3 et une fraction C4 comme matières premières pour produire de cette manière une fraction de dicyclopentadiène brute contenant du dicyclopentadiène et la distillation de la fraction de dicyclopentadiène brute pour isoler et recueillir du dicyclopentadiène à partir de la fraction de dicyclopentadiène brute. L'invention porte également sur un procédé pour le raffinage de dicyclopentadiène, qui est caractérisé par la mise en contact d'une fraction contenant du dicyclopentadiène distillée et raffinée avec un gaz inerte ou un hydrocarbure en C1-3 gazeux.

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