Process for preparing needle coal pitch coke

Patent · Tue Sep 26 04:00:00 EDT 1978

OSTI ID:6411472

Sunago, H; Migitaka, W

A process for preparing needle coal pitch coke by mixing coal tar and/or coal tar pitch with aromatic and aliphatic solvents under atmospheric pressure and at temperatures between 15/sup 0/C and 140/sup 0/C. The mixing ratio of the aromatic and aliphatic solvents and their quantities of addition to coal tar and/or coal tar pitch are adjusted so that insoluble substances precipitate in a zone selected from the group consisting of a slurry zone and a crystal zone. By distilling a supernatant solution obtained by separating the insoluble substances occurring in the slurry or crystal zone, hydrocarbons consisting substantially of aromatic compounds and free of the insoluble substances are obtained. The obtained hydrocarbons are processed into coke.

• Assignee: Nittetsu Chemical Industrial Co.
• Patent Number(s): US 4116815
• OSTI ID: 6411472
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010401* -- Coal & Coal Products-- Carbonization-- (-1987)
010500 -- Coal
Lignite
& Peat-- Products & By-Products
ALKANES
AROMATICS
CARBON
CARBONIZATION
CHEMICAL REACTIONS
COAL TAR
COKE
COKING
DECOMPOSITION
ELECTRODES
ELEMENTS
GRAPHITE
HYDROCARBONS
MANUFACTURING
NONMETALS
ORGANIC COMPOUNDS
ORGANIC SOLVENTS
OTHER ORGANIC COMPOUNDS
PITCHES
PURIFICATION
SOLVENTS
TAR