| 摘要 |
Liquid sorbents that are solutions in an aromatic hydrocarbon or a halogenated aromatic hydrocarbon of a bimetallic salt complex having the generic formula MIMIIXnxAromatic, wherein MI is a Group I-B metal, MII is a Group III-A metal, X is halogen, n is the sum of the valences of MI and MII, and Aromatic is a monocyclic aromatic hydrocarbon or halogenated aromatic hydrocarbon having 6 to 12 carbon atoms and that contain alkylated aromatic compounds as impurities are purified by a process in which a portion of the liquid sorbent is subjected to two successive flash distillations, the first of which is carried out under atmospheric pressure to separate a distillate that is rich in the aromatic hydrocarbon or halogenated aromatic hydrocarbon and the second of which is carried out under subatmospheric pressure to separate a distillate that is rich in alkylated aromatic compounds, the residue of the distillation is reconstituted by adding aromatic hydrocarbon or halogenated aromatic hydrocarbon to it, and the reconstituted portion of the sorbent is combined with the remainder of the sorbent.
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