Process for producing a clean hydrocarbon fuel from high calcium coal

Patent · Tue Jun 28 00:00:00 EDT 1988

OSTI ID:6788011

Kindig, J K

A method is described for substantially reducing the amount of at least one insoluble fluoride-forming species selected from the group consisting of Group IA species and Group IIA species. The species is present in a coal feed material comprising: forming a slurry of a coal feed; a fluoride acid in an amount to produce a first molar concentration of free-fluoride-ions; at least one fluoride-complexing species, the total of all fluoride-complexing species in the slurry being present in an amount to produce a second molar concentration, the second molar concentration being at least equal to that amount such that the ratio of the first molar concentration to the second molar concentration is substantially equal to the stoichiometric ratio of fluoride in at least one tightly-bound complexion so as to from tightly-bound complexions with substantially all free-fluoride ions in the slurry to produce a leached coal product and a spent leach liquor; and separating the leached coal product from the spent leach liquor.

• Assignee: Williams Technologies, Inc., Tulsa, OK
• Patent Number(s): US 4753033
• OSTI ID: 6788011
• Resource Relation: Patent File Date: Filed date 5 Feb 1987
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
COAL
CHEMICAL PREPARATION
FUEL SLURRIES
ACIDIFICATION
CHEMICAL COMPOSITION
COAL PREPARATION
FLUORIDES
LEACHATES
LEACHING
SEPARATION PROCESSES
CARBONACEOUS MATERIALS
DISPERSIONS
DISSOLUTION
ENERGY SOURCES
FLUORINE COMPOUNDS
FOSSIL FUELS
FUELS
HALIDES
HALOGEN COMPOUNDS
MATERIALS
MIXTURES
SLURRIES
SOLUTIONS
SUSPENSIONS
SYNTHESIS
010402* - Coal
Lignite
& Peat- Purification & Upgrading