Process for separating durene from substituted benzene hydrocarbons
A process is described for separating durene from a heavy gasoline fraction hydrocarbon mixture comprising durene, isodurene, prehnitene and other polyalkylated monocyclic aromatic hydrocarbons boiling in the range from 150 to 225 C, said process comprising contacting said mixture at adsorption conditions with an adsorbent consisting essentially of an X zeolite exchanged with lithium cations at exchangeable sites thereby selectively adsorbing said durene thereon, removing nonadsorbed isomers of durene and said other polyalkylated monocyclic aromatic hydrocarbons from contact with said adsorbent and desorbing said durene with a liquid aromatic desorbent having a boiling point at least 5 C higher or lower than the boilng point range of said hydrocarbon mixture.
- Assignee:
- UOP, Des Plaines, IL (United States)
- Patent Number(s):
- US 5223589; A
- Application Number:
- PPN: US 7-872191
- OSTI ID:
- 6479253
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
020400* -- Petroleum-- Processing
ADSORPTION
ALKALI METAL COMPOUNDS
AROMATICS
BOILING POINTS
DESORPTION
DURENE
ENERGY SOURCES
FOSSIL FUELS
FUELS
HYDROCARBONS
INORGANIC ION EXCHANGERS
ION EXCHANGE MATERIALS
LITHIUM COMPOUNDS
MANAGEMENT
MATERIALS
MATERIALS RECOVERY
MINERALS
ORGANIC COMPOUNDS
PETROLEUM
PETROLEUM FRACTIONS
PHYSICAL PROPERTIES
PROCESSING
SEPARATION PROCESSES
SILICATE MINERALS
SORPTION
SORPTIVE PROPERTIES
SURFACE PROPERTIES
THERMODYNAMIC PROPERTIES
TRANSITION TEMPERATURE
VISCOSITY
WASTE MANAGEMENT
WASTE PROCESSING
ZEOLITES