Invention patent: b "system of recurau00e7u00e3o in plant of olefins using distillation catalu00ectica" d .The C ~ 2 ~ C ~ 5 ~ and heavier acetilenos and dienes in a feed stream are hydrogenated without heat generation hidrogenar significantly the C ~ 2 ~ C ~ 3 ~.In addition, the C ~ 4 ~ and heavier olefins may be hydrogenated.Specifically,The gas supply craqueado in a plant of olefins is hydrogenated in a distillation reaction column containing a catalyst for hydrogenation without the need to separate hydrogen from alimeNtau00e7u00e3o and without any significant hydrogenation of 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 non hydrogenated and essentially of the total other C ~ 2 ~ and heavier hydrocarbon - S.More are hydrogenated.Any non reacted hydrogen can be separated by a membrane and then reacted with materials C ~ 9 ~ and heavier separated to produce hydrogenated pyrolysis gasoline.
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