Olefin purification process

Details Olefin purification process Olefin purification process

1985-08-08

1987-12-01

Bascomb, Wilbur

Distillation: processes, separatory

With chemical reaction

Including step of adding catalyst or reacting material

203 38, 208 49, 252 45, 568 18, 585800, 585811, 585856, B01D 334, C07C 7148

Patent

active

047102730

ABSTRACT:
Olefin mixtures containing vinyl, vinylidene and internal olefins are upgraded in value by removing the vinylidene olefin content and lowering the internal olefin content by selective reaction with a sulfur halide such as S.sub.2 Cl.sub.2 followed by reaction with aqueous alkali metal hydrosulfide and optionally alkali metal sulfide. The reaction mixture is distilled to remove mainly vinyl and a reduced amount of internal olefins. The distillation residue is an effective extreme pressure additive for lubricating oil.

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Smalheer et al: Lubricant Additives, pp. 9-11 (1967).

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