Process for the separation of c5 hydrocarbons present in streams prevalently containing c4 products used for the production of high-octane hydrocarbon compounds by the se- lective dimerization of isobutene
AssigneeSnamprogetti S.p.A.
InventorsMarco DI GIROLAMO, Domenico Sanfilippo, Massimo Conte
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Abstract
A process is described for the separation of C5 hydrocarbons present, in a quantity ranging from 0.2 to 20% by weight, in streams prevalently containing C4 products used for the production of high-octane hydrocarbon compounds, by the selective dimerization of isobutene, characterized in that the dimerization reaction is carried out in the presence of linear and branched alcohols and alkyl ethers in a quantity which is such as to have a molar ratio alcohols/alkyl ethers/isobutene in the feeding higher than 0.01.
Claims17
A process for the separation of C5 hydrocarbons present, in a quantity ranging from 0.2 to 20% by weight, in hydrocarbon streams prevalently containing C4 products used for the production of high-octane hydrocarbon compounds, by the selective dimerization of isobutene, characterized in that the dimerization reaction is carried out in the presence of linear and branched alcohols and-alkyl ethers in such a quantity as to have a molar ratio alcohols+alkyl ethers/isobutene in the feeding higher than 0.01, being the separation of C5/branched alcohol azeotropic product effected using traditional fractionation columns.
Dependencies are inferred from the claim text.