Process for oligomerization of ethylene

US10112876B2 · kind B2 · utility

Assignee

• SAUDI BASIC INDUSTRIES CORPORATION · SA

Inventors

• Shahid Azam · Riyadh, SA
• Abduljelil Iliyas · Riyadh, SA
• Abdullah Alqahtani · Riyadh, SA
• Shehzada Khurram · Riyadh, SA
• Anina Wöhl · Munich, DE
• Wolfgang Muller · Königsfeld, DE
• Marco Harff · Munich, DE
• Andreas Meiswinkel · Munich, DE
• Heinz Bölt · Wolfratshausen, DE

Key dates

• Filing date: Sep 5, 2013
• Grant date: Oct 30, 2018
• Expiry date: Dec 5, 2033

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C2531/34
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

The present invention relates to a process for the oligomerization of ethylene, comprising: a) oligomerization of ethylene in a reactor in the presence of solvent and catalyst; b) transferring reactor overhead effluent to an externally located cooling device and recycling condensed effluent into the reactor; c) transferring the reactor bottom effluent to a series of fractionation columns and, in the following order, i) optionally separating a C4 fraction, ii) separating a C6 fraction, iii) simultaneously separating C8 and C10 fractions and recycling thereof into the reactor , and iv) separating residues comprising ≥C12 fractions, spent catalyst polymer material and quench media, from the process, wherein the solvent is separated in any of the steps i)-iv)and/or in an additional step.