Mineral oils: processes and products – Chemical conversion of hydrocarbons – With preliminary treatment of feed
Patent
1995-05-17
1997-10-21
Myers, Helane
Mineral oils: processes and products
Chemical conversion of hydrocarbons
With preliminary treatment of feed
208145, 208217, 585253, 585260, 585262, 585264, 585324, 585804, C10G 700
Patent
active
056792417
ABSTRACT:
The C.sub.2 to C.sub.5 and heavier acetylenes and dienes in a thermally cracked feed stream are hydrogenated without significantly hydrogenating the C.sub.2 and C.sub.3 olefins. Additionally, the C.sub.4 and heavier olefins may be hydrogenated. Specifically, the cracked gas feed in an olefin plant is hydrogenated in a distillation reaction column containing a hydrogenation catalyst without the necessity of separating the hydrogen out of the feed and without any significant hydrogenation of the ethylene and propylene. A combined reaction-fractionation step known as catalytic distillation hydrogenation is used to simultaneously carry out the reactions and separations while maintaining the hydrogenation conditions such that the ethylene and propylene remain substantially un-hydrogenated and essentially all of the other C.sub.2 and heavier unsaturated hydrocarbons are hydrogenated. Any unreacted hydrogen can be separated by a membrane and then reacted with separated C.sub.9 and heavier materials to produce hydrogenated pyrolysis gasoline.
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Gildert Gary Robert
McCarthy Francis D.
Stanley Stephen J.
Sumner Charles
ABB Lummus Global Inc.
Chemical Research & Licensing Company
Myers Helane
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