Naphthalene-thionaphthene separation by rectification

Journal Article · Fri Dec 31 23:00:00 EST 1976 · Coke Chem., USSR (Engl. Transl.); (United States)

OSTI ID:6773181

Markus, G A; Terent'ev, V Kh; Kirsanova, V S

It is possible to isolate naphthalene with thionaphthene contents of 0.4 to 0.8%, and technical thionaphthene itself, from naphthalene oils and fractions or pressed naphthalene with 2.4 to 6.52% thionaphthene, by straight rectification. The laboratory column had an efficiency of 55 theoretical plates and the reflux ratio used was 15 to 31. The repeated rectification of the refined naphthalene under similar conditions produced naphthalene with a cp of 80.28/sup 0/C and <0.01% S. The volatility of naphthalene relative to thionaphthene is 1.09, and the bp of the latter is 221.4/sup 0/C. Data are included on the behavior of other naphthalene impurities during straight rectification.

• OSTI ID: 6773181
• Journal Information: Coke Chem., USSR (Engl. Transl.); (United States), Journal Name: Coke Chem., USSR (Engl. Transl.); (United States) Vol. 1; ISSN COKCA
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010500* -- Coal
Lignite
&amp; Peat-- Products &amp; By-Products
AROMATICS
BOILING POINTS
CONDENSED AROMATICS
DISTILLATION
HETEROCYCLIC COMPOUNDS
HYDROCARBONS
NAPHTHALENE
ORGANIC COMPOUNDS
ORGANIC SULFUR COMPOUNDS
PHYSICAL PROPERTIES
PRODUCTION
PURIFICATION
REMOVAL
SEPARATION PROCESSES
THERMODYNAMIC PROPERTIES
THIONAPHTHENES
TRANSITION TEMPERATURE