Method for producing mesophase-containing pitch by using carrier gas
Patent
·
OSTI ID:6015851
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
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
01 COAL, LIGNITE, AND PEAT
010402 -- Coal
Lignite
& Peat-- Purification & Upgrading
02 PETROLEUM
020400* -- Petroleum-- Processing
COAL TAR
DEVOLATILIZATION
DISTILLATES
ENERGY SOURCES
FOSSIL FUELS
FUELS
HEAT TREATMENTS
MATTER
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
PETROLEUM
PITCHES
TAR
VOLATILE MATTER
010402 -- Coal
Lignite
& Peat-- Purification & Upgrading
02 PETROLEUM
020400* -- Petroleum-- Processing
COAL TAR
DEVOLATILIZATION
DISTILLATES
ENERGY SOURCES
FOSSIL FUELS
FUELS
HEAT TREATMENTS
MATTER
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
PETROLEUM
PITCHES
TAR
VOLATILE MATTER