Hydrogenation of coal to produce coke, pitch, and electrode carbon

Patent · Mon Dec 02 04:00:00 EST 1974

OSTI ID:7357901

Schroeder, W C

A method for preparation of low sulfur pitch, coke and aromatic oils from sulfur-containing coal comprising introducing said coal in the absence of a pasting oil into a hydrogenation zone of a closed cyclic system having hydrogenation, purifying and oxygen-steam reforming zones, said system being maintained at a pressure in the range of about 500 to 4000 psi, hydrogenating said coal in the hydrogenation zone at a temperature in the range of about 820/sup 0/ to 1000/sup 0/F with hot hydrogen-containing gases from the reforming zone, said gases also containing carbon monoxide and excess steam, to provide an effluent stream containing excess hydrogen, gaseous hydrocarbons, a heavy carbonaceous liquid and solids fraction, and gaseous impurities including sulfur compounds, removing the heavy, carbonaceous liquid and solids fraction from said effluent stream without substantial reduction in system pressure, removing sulfur compounds from the resulting gaseous stream without substantial reduction in system pressure, introducing the resulting purified gaseous stream, steam and oxygen into said reforming zone to provide the hot hydrogen-containing gases for introduction into said hydrogenation zone, and removing distillable oils from said carbonaceous liquid fraction to produce pitch or coke and aromatic oils.

• Assignee: TIC; EDB-76-078473; ERA-02-000007
• Patent Number(s): US 3960701
• OSTI ID: 7357901
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010403* -- Coal & Coal Products-- Hydrogenation-- (-1987)
AROMATICS
CARBON
CARBONACEOUS MATERIALS
CHEMICAL REACTIONS
COAL
COKE
DESULFURIZATION
ELEMENTS
ENERGY SOURCES
FOSSIL FUELS
FUELS
HYDROGENATION
NONMETALS
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
PITCHES