Method and device for increasing service life of extractant in hydrofining process of crude benzene

The invention relates to a method for increasing the service life of extractant in the hydrofining process of crude benzene. The method comprises the following specific steps: 1) in an exhaust stabilizer, the side of the stabilizer is provided with a liquid material discharge hole, the discharged ma...

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Bibliographic Details
Main Authors YANG XUESONG, LI HAOYANG, ZHOU ZHICHUN, SUN HONG, YE HUANG, SHAN CHUNHUA
Format Patent
LanguageChinese
English
Published 02.02.2011
Subjects
ACYCLIC OR CARBOCYCLIC COMPOUNDS
CHEMISTRY
METALLURGY
ORGANIC CHEMISTRY
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Summary:The invention relates to a method for increasing the service life of extractant in the hydrofining process of crude benzene. The method comprises the following specific steps: 1) in an exhaust stabilizer, the side of the stabilizer is provided with a liquid material discharge hole, the discharged material enters an extraction-distillation unit or extraction unit for separation and purification; 2) the mixed hydrocarbon of heavy components containing 10 or more than 10 carbons is aggregated in the kettle of the exhaust stabilizer; 3) the mixed hydrocarbon in the kettle of the exhaust stabilizer is discharged periodically or continuously; and after the mixed hydrocarbon is sent back to the crude benzene raw material tank, the mixed hydrocarbon enters a benzene twin-tower for heavy component eliminating treatment to separate the heavy components containing 10 and more than 10 carbons from aromatic hydrocarbon. The method changes the discharging position of liquid phase in steady-state operation to remove the hea
Bibliography:Application Number: CN20101278924