PROCESS FOR PREPARING 2,6-DIALKYLNAPHTALENE

摘要

A process for producing 2,6-dialkylnaphtalene from a hydrocarbon feedstock that contains at least one component selected from the group consisting of dialkylnaphtalene isomers, monoalkynaphtalene isomers, polyalkylnaphtalenes, and naphtalene, is provided that includes the following steps: I) separating the hydrocarbon feedstock and/or a dealkylation product fed from step III into a naphtalene fraction, a monoalkylnaphtalene fraction, a dialkylnaphtalene fraction and a remaining products fraction; II) separating and purifying 2,6-dialkylnaphtalene from the dialkylnaphtalene fraction of step I; III) dealkylating the hydrocarbon feedstock and/or the remaining products fraction of step I and feeding the dealkylation product to step I; and IV) alkylating the naphtalene and monoalkylnaphtalene fractions of step I; wherein the hydrocarbon feedstock is fed to step I or step III.