Separation of anthracene from crude anthracene using gas antisolvent recrystallization

Journal Article · Sat Aug 01 04:00:00 EDT 1992 · Separation Science and Technology; (United States)

DOI:https://doi.org/10.1080/01496399208019425· OSTI ID:7172336

Liou, Yuchung; Chang, Chiehming ^[1]

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1. Yuan-Ze Inst. of Tech., Neili (Taiwan)

Pure anthracene is mostly used for conversion to anthraquinone, an intermediate for the synthesis of very powerful vat dyestuffs. A coal tar distillate, crude anthracene, which contains 30% anthracene, 25% phenanthrene, 15% carbazole, and other impurities, was used as the model mixture. In this study, 90% by weight purity anthracene was obtained using gas antisolvent (GAS) recrystallization. The GAS process induces the separation of solids by introducing an antisolvent, carbon dioxide (or the supercritical fluid), into acetone which was used as the liquid solvent. The dissolution of the compressed gas into the solute-laden solution selectively lowers the solubilities of solid solutes and salts them out. The results showed that high purity anthracene was obtained at a high feed concentration and high pressure conditions. The separation factor of anthracene versus phenanthrene is close to 30.07.

• OSTI ID: 7172336
• Journal Information: Separation Science and Technology; (United States), Journal Name: Separation Science and Technology; (United States) Vol. 27:10; ISSN SSTED; ISSN 0149-6395
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010402* -- Coal
Lignite
& Peat-- Purification & Upgrading
010500 -- Coal
Lignite
& Peat-- Products & By-Products
ACETONE
ANTHRACENE
AROMATICS
AZAARENES
AZOLES
CARBAZOLES
CARBON COMPOUNDS
CARBON DIOXIDE
CARBON OXIDES
CHALCOGENIDES
CHROMATOGRAPHY
COAL TAR OILS
COMPRESSED GASES
CONDENSED AROMATICS
DATA
DIAGRAMS
DISSOLUTION
EFFICIENCY
EXPERIMENTAL DATA
FLOWSHEETS
FLUIDS
GASES
HETEROCYCLIC COMPOUNDS
HYDROCARBONS
INFORMATION
KETONES
LIQUID COLUMN CHROMATOGRAPHY
MANAGEMENT
MATERIALS RECOVERY
NUMERICAL DATA
OILS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
OTHER ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PHASE DIAGRAMS
PHENANTHRENE
PRECIPITATION
PROCESSING
PURIFICATION
RECRYSTALLIZATION
SEPARATION PROCESSES
SOLUBILITY
SUPERCRITICAL STATE
WASTE MANAGEMENT
WASTE PROCESSING
YIELDS