Process for preparing needle coal pitch coke
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
- Resource Relation:
- Patent File Date: Filed date 21 Jun 1977
- Country of Publication:
- United States
- Language:
- English
Similar Records
Theory of highly productive work and the modern state of the technology and equipment of pitch coke ovens. [Electrode pitch coke]
Method for the production of needle coke
Related Subjects
COAL TAR
CARBONIZATION
PURIFICATION
ELECTRODES
MANUFACTURING
PITCHES
ALKANES
AROMATICS
COKE
COKING
GRAPHITE
ORGANIC SOLVENTS
CARBON
CHEMICAL REACTIONS
DECOMPOSITION
ELEMENTS
HYDROCARBONS
NONMETALS
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
SOLVENTS
TAR
010401* - Coal & Coal Products- Carbonization- (-1987)
010500 - Coal
Lignite
& Peat- Products & By-Products