Method for producing mesophase-containing pitch by using carrier gas

Patent · Tue Dec 11 00:00:00 EST 1984

OSTI ID:6015851

Watanabe, M

A method for producing a mesophase-containing pitch from petroleum pitch or coal tar pitch is disclosed. According to this method volatile distillate fractions, which are harmful to mesophase formation and present originally in the raw material pitch or formed as by-product during heat treatment time are driven off by using a carrier gas at a temperature of 360/sup 0/ to 450/sup 0/ C. in order to shorten the overall heat treatment time and advance the mesophase formation smoothly by the increase of stirring effect.

• Assignee: Kashima Oil Company Limited (Japan)
• Patent Number(s): US 4487685
• OSTI ID: 6015851
• Resource Relation: Patent Priority Date: Priority date 24 Jun 1983, Japan; Other Information: PAT-APPL-507585
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
01 COAL, LIGNITE, AND PEAT
PITCHES
DEVOLATILIZATION
HEAT TREATMENTS
COAL TAR
DISTILLATES
PETROLEUM
VOLATILE MATTER
ENERGY SOURCES
FOSSIL FUELS
FUELS
MATTER
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
TAR
020400* - Petroleum- Processing
010402 - Coal
Lignite
& Peat- Purification & Upgrading