Flash thermocracking of tar or pitch

Details Flash thermocracking of tar or pitch Flash thermocracking of tar or pitch

1994-07-22

1996-04-16

Myers, Helane

Mineral oils: processes and products

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

208 40, 208 42, 208 43, C10C 119, C10C 304

Patent

active

055079385

ABSTRACT:
A process for producing high-quality pitches comprising atomizing a preheated feed material of carbonaceous tar and/or pitch, forming an aerosol, contacting the aerosol in a reaction vessel with a flowing, non-reactive gas atmosphere for less than about 10 seconds at a gas temperature of about 1400.degree. F. to about 2000.degree. F., and separating and recovering a liquid fraction of the liquid formed in the reaction vessel which remains in a liquid phase up to a distillation temperature of about 750.degree. F.

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patent: 4554148 (1985-11-01), Gomi et al.
patent: 4758329 (1988-07-01), Newman et al.
patent: 4999099 (1991-03-01), Fu et al.
patent: 5091072 (1992-02-01), Tsuchitani et al.
patent: 5198101 (1993-03-01), Kalback
Berber, J. S. et al., "Low-Temperature Lignite Tar: Processing and Utilization", Bulletin 663, United States Department of the Interior, Bureau of Mines, 1973.
Stadelhofer, J. W. et al., "The Manufacture of High-Value Carbon from Coal-Tar Pitch", Fuel, 60:9, 877-882 (1981).

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