Control of pyrite addition in coal liquefaction process

Patent · Tue Dec 21 00:00:00 EST 1982

OSTI ID:6757345

Junkin, J E; Schmid, B K

Pyrite addition to a coal liquefaction process is controlled in inverse proportion to the calcium content of the feed coal to maximize the C/sub 5/-900/sup 0/F (482/sup 0/C) liquid yield per unit weight of pyrite added. The pyrite addition is controlled in this manner so as to minimize the amount of pyrite used and thus reduce pyrite contribution to the slurry pumping load and disposal problems connected with pyrite produced slag.

• Assignee: Pittsburgh and Midway Coal Mining Co.
• Patent Number(s): US 4364818
• OSTI ID: 6757345
• Resource Relation: Patent File Date: Filed date 15 Jul 1981; Other Information: PAT-APPL-282731
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
COAL LIQUEFACTION
CATALYSTS
PYRITE
CONTROL
CALCIUM
HYDROGEN
SLURRIES
ALKALINE EARTH METALS
CHALCOGENIDES
DISPERSIONS
ELEMENTS
IRON COMPOUNDS
IRON SULFIDES
LIQUEFACTION
METALS
MINERALS
MIXTURES
NONMETALS
SULFIDE MINERALS
SULFIDES
SULFUR COMPOUNDS
SUSPENSIONS
THERMOCHEMICAL PROCESSES
TRANSITION ELEMENT COMPOUNDS
010405* - Coal
Lignite
& Peat- Hydrogenation & Liquefaction