Diisobutylene process

C - Chemistry – Metallurgy – 07 – C

Patent

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Details

C07C 2/28 (2006.01)

Patent

CA 2723423

This invention is a process for producing diisobutylene from isobutylene. The process comprises first contacting a sulfonic acid resin with a reaction feed comprising isobutylene and tertiary butyl alcohol to produce a product stream comprising diisobutylene, isobutylene, tertiary butyl alcohol, and water. The product stream is distilled to produce a first overhead stream comprising diisobuty-lene and tertiary butyl alcohol. Water is separated from the first overhead stream, and the resulting isobutylene-enriched stream is recycled back to the reaction step. The first bottoms stream is distilled to produce a second overhead stream comprising tertiary butyl alcohol and a bottoms product stream comprising diisobutylene.

La présente invention concerne un procédé de production de diisobutylène à partir d'isobutylène. Le procédé comprend d'abord l'étape consistant à mettre en contact une résine d'acide sulfonique avec une charge d'alimentation de réaction comprenant de l'isobutylène et de l'alcool tert-butylique afin de produire un courant de produit comprenant du diisobutylène, de l'isobutylène, l'alcool tert-butylique, et de l'eau. Le courant de produit est distillé afin de produire un premier courant de tête comprenant le diisobutylène et l'alcool tert-butylique. L'eau est séparée du premier courant de tête, et le courant résultant enrichi en isobutylène est recyclé en retour vers l'étape de réaction. Le premier courant de queue est distillé afin de produire un second courant de tête comprenant l'alcool tert-butylique et un courant de produit de queue comprenant le diisobutylène.

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