专利名称：Fractionation of aromatic streams发明人：Charles V. Berger申请号：US05/562511申请日：19750327公开号：US03996305A公开日：19761207
摘要：A novel fractionation scheme applicable to a transalkylation process in which anadmixture of toluene and C.sub.9 alkylbenzene is converted to principally benzene andC.sub.8 alkylbenzene is disclosed. Transalkylation zone effluent containing C.sub.6 -C.sub.10 alkylbenzene or a C.sub.6 -C. sub.10 alkylbenzene admixture of transalkylationzone effluent and extract from an aromatics separation zone is passed into a
fractionation zone wherein an admixture of benzene and toluene is withdrawn as a lowerboiling fraction, C.sub.8 alkylbenzene is withdrawn as a central boiling fraction, and C.sub.9 and C.sub.10 alkylbenzne are withdrawn in admixture as a higher boiling fraction.The lower and higher boiling fractions are introduced into a fractionator at a higher and alower locus, respectively. From the fractionator, an overhead fraction containing benzeneand a bottoms fraction containing C.sub.10 alkylbenzene are withdrawn as productstreams, and one or more sidecut fractions including toluene and C.sub.9 alkylbenzeneare withdrawn and recycled to the transalkylation zone.
申请人：UNIVERSAL OIL PRODUCTS COMPANY
代理人：James R. Hoatson, Jr.,Thomas K. McBride,William H. Page, II
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