Solvent fractionation of wax-containing mixtures

Patent · Tue Feb 13 04:00:00 EST 1951

OSTI ID:5253779

Clarke, E W

A method of separating a wax-containing mixture into fractions of higher and lower melting point is described which comprises counter-currently contacting the wax-containing mixture in an extraction zone with an extraction solvent and solvent additives at a temperature such that two immiscible liquid phases are formed, one comprising the higher melting wax fraction containing solvent and additive, and the other comprising solvent and additive and the lower melting wax fraction. The phases and the solvent and additive from each are removed. The solvent comprises 1.8 to 2.2 volumes of nitro-benzene containing a small amount of phenol per volume of wax-containing mixture. The first additive comprises 0.15 to 0.25 volume of phenol containing a small amount of water per volume of wax-containing mixture, and the second additive comprises 0.45 to 0.55 volume of a paraffinic hydrocarbon containing from 8 to 18 carbon atoms per volume of wax-containing mixture.

• Assignee: Atlantic Refining Co.
• Patent Number(s): US 2541339
• OSTI ID: 5253779
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020400* -- Petroleum-- Processing
ADDITIVES
ALKANES
AROMATICS
BOILING POINTS
DISPERSIONS
EXTRACTION
HYDROCARBONS
HYDROXY COMPOUNDS
MIXTURES
NITRO COMPOUNDS
NITROBENZENE
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
OTHER ORGANIC COMPOUNDS
PHENOL
PHENOLS
PHYSICAL PROPERTIES
SEPARATION PROCESSES
SOLVENT EXTRACTION
SOLVENTS
THERMODYNAMIC PROPERTIES
TRANSITION TEMPERATURE
WAXES