Removal of quinoline insolubles from coal derived fractions

Details Removal of quinoline insolubles from coal derived fractions Removal of quinoline insolubles from coal derived fractions

1981-03-13

1983-09-20

Gantz, Delbert E.

Mineral oils: processes and products

Asphalts, tars, pitches and resins; making, treating and...

Solvent extraction

C10C 118, C10C 308

Patent

active

044054394

ABSTRACT:
Coal tar pitch is contacted with a promoter liquid having a 5 volume percent distillation temperature of at least 250.degree. F. and a 95 volume percent distillation temperature of at least 350.degree. F. and no greater than about 750.degree. F. with the liquid having a characterization factor of at least 9.75 to promote the separation of quinoline insolubles from the pitch. A coat tar pitch fraction essentially free of quinoline insolubles is then subjected to coking to produce a needle coke. The process is also applicable to separation of quinoline insolubles from coal tar derived binder pitch.

REFERENCES:
patent: 1553641 (1925-09-01), Sperr, Jr.
patent: 3147205 (1964-09-01), Ohsol et al.
patent: 3761387 (1973-09-01), Weegner et al.
patent: 3992281 (1976-11-01), Benade
patent: 4127472 (1978-11-01), Migitaka et al.
patent: 4259171 (1981-03-01), Stadelhofer et al.
patent: 4277325 (1981-07-01), Greenwood

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