Liquid-vapor equilibrium in the systems hexane-benzene-petroleum sulfoxides-diethylene glycol and hexane-benzene-petroleum sulfoxides-dimethylformamide

Journal Article · Sun Dec 01 04:00:00 EST 1985 · J. Appl. Chem. USSR (Engl. Transl.); (United States)

OSTI ID:5123110

Vakhitova, N G; Baikova, A Y; Murinov, Y I; Nikitin, Y E

This paper reports the results of studies of liquid-vapor equilibrium in the benzene-hexane system in presence of binary extractants: petroleum sulfoxide-dimethylformamide (DMFA) and petroleum sulfoxide-diethylene glycol (DEG). The physicochemical properties of the extractants are presented and the influence of the content of slelective solvent on vapor-liquid equilibrium was studied; the total concentration of the binary solvent in the experiments was 50 vol. %. Results also show that the introduction of a second solvent into petroleum sulfoxides alters the vapor-liquid equilibrium in the system substantially. The volatility of hexane is increased considerably, especially in the case of the PSO-DMFA mixed extractant. In the case of benzene, petroleum sulfoxides and their mixtures with diethylene glycol and dimethylformamide are approximately equal in effectiveness in the region of low benzene concentrations. In the region of high benzene concentrations mixed extractants are more effective than petroleum sulfoxides; this is decisive for isolation of aromatic hydrocarbons from mixtures rich in aromatics.

• OSTI ID: 5123110
• Journal Information: J. Appl. Chem. USSR (Engl. Transl.); (United States), Journal Name: J. Appl. Chem. USSR (Engl. Transl.); (United States) Vol. 58:6, PT.2; ISSN JAPUA
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020400 -- Petroleum-- Processing
023000* -- Petroleum-- Properties & Composition
ALCOHOLS
ALKANES
AMIDES
AROMATICS
BENZENE
CHEMICAL COMPOSITION
DENSITY
DISPERSIONS
EQUILIBRIUM
EXTRACTION
FORMAMIDE
GLYCOLS
HEXANE
HYDROCARBONS
HYDROXY COMPOUNDS
MIXTURES
MOLECULAR WEIGHT
OPTICAL PROPERTIES
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
ORGANIC SOLVENTS
ORGANIC SULFUR COMPOUNDS
PETROLEUM PRODUCTS
PHASE STUDIES
PHYSICAL PROPERTIES
REFRACTIVITY
SEPARATION PROCESSES
SOLVENT EXTRACTION
SOLVENT PROPERTIES
SOLVENTS
SULFOXIDES