Control of pyrite addition in coal liquefaction process

Patent · Tue Dec 21 00:00:00 EST 1982

OSTI ID:864442

Schmid, Bruce K ^[1]; Junkin, James E ^[1]

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1. Englewood, CO

Pyrite addition to a coal liquefaction process (22, 26) is controlled (118) in inverse proportion to the calcium content of the feed coal to maximize the C.sub.5 --900.degree. F. (482.degree. C.) liquid yield per unit weight of pyrite added (110). 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.

• Research Organization: Pittsburg & Midway Coal Mining Co.
• DOE Contract Number: AC01-19ET14800
• Assignee: Pittsburg & Midway Coal Mining Co. (Englewood, CO)
• Patent Number(s): US 4364818
• Application Number: 06/282,731
• OSTI ID: 864442
• Country of Publication: United States
• Language: English

Related Subjects

control
pyrite
addition
coal
liquefaction
process
22
26
controlled
118
inverse
proportion
calcium
content
feed
maximize
-900
degree
482
liquid
yield
unit
weight
added
110
manner
minimize
amount
reduce
contribution
slurry
pumping
load
disposal
connected
produced
slag
liquefaction process
coal liquefaction
feed coal
pyrite addition
unit weight
liquid yield
slurry pump
/208/