Abstract

This paper outlines the various routes for the manufacturing of butene-1 used as acomonomer for the production of polyethylene (LLDPE, HDPE). Analysis of the characteristics of each route is provided, together with a comparison between the different processes. The preferred route for the manufacturing of butene-1 employing IFP-SABIC Alphabutol technology is highlighted. The advantages this technology offers over possible competing processes are identified. The first commercial plant at a wholly owned SABIC affiliate (Petrokemya) empolying the IFP-SABIC technology has now been in operation since 1987. The main features of IFP-SABIC Alphabutol technology are that it is very selective to butene-1 production and offers a simple process sequence resulting in lower capital and operating cost. The technology over the years has improved considerably in dealing with polymer formation and deposition which is detrimental to the plant performance, changes incorporated in the original design together with accumulated experience has resulted in significantly less polymer deposition.

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