Low-rank coal oil agglomeration

Patent Application · Tue Jul 16 00:00:00 EDT 1991

OSTI ID:5806822

Knudson, C L; Timpe, R C

This patent describes a method of producing low ash, low moisture coal agglomerate. It comprises size- reducing coal particles to a size that passes through a 60 mesh standard sieve screen; adjusting the pH of the particles to 5 or less with an acid which facilitates removal of cations from carboxylic acid salts with the mineral phase of the low moisture coal; mixing the size-reduced particles with from about 20% by weight to about 50% by weight of a coal tar unprocessed derived bridging oil; and agglomerating the size reduced particles.

• Assignee: UNDSEM Foundation, Grand Forks, ND (USA)
• Application Number: PPN: US 7-414536
• OSTI ID: 5806822
• Resource Relation: Patent File Date: 28 Sep 1989
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
COAL
AGGLOMERATION
PARTICLE SIZE
COAL TAR OILS
WATER REMOVAL
COAL RANK
MOISTURE
PH VALUE
CARBONACEOUS MATERIALS
ENERGY SOURCES
FOSSIL FUELS
FUELS
MATERIALS
OILS
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
REMOVAL
SIZE
010300* - Coal
Lignite
& Peat- Preparation- (1987-)
010600 - Coal
Lignite
& Peat- Properties & Composition
010500 - Coal
Lignite
& Peat- Products & By-Products