Dewatering dilute fine coal/water slurries to produce coal/water fuel

Conference · Tue Apr 01 04:00:00 EST 1986

OSTI ID:5785015

Maas, D J; Sears, R E; Potas, T A

Vendor assisted concentration studies were conducted on hydrothermally treated low-rank coal water (LRCW) slurries using a hydroclone, centrifuge, plate and frame filter, belt pressure filter, electrofiltration techniques and electroacoustic dewatering. The release of inorganic constituents into the process water, release of tar, and reduction of coal particle size due to pilot-scale hydrothermal processing all contributed to the difficulty in separating the process water from the solid products. The centrifuge was determined to be the best commercially available method. After purchasing a centrifuge, optimization studies were conducted to determine the best operating conditions for concentrating hydrothermally treated LRCW slurries. 6 refs., 8 figs., 4 tabs.

• Research Organization: North Dakota Univ., Grand Forks (USA). Energy Research Center
• DOE Contract Number: FC21-83FE60181
• OSTI ID: 5785015
• Report Number(s): DOE/FE/60181-179; CONF-860855-1; ON: DE86010105
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
013000* -- Coal
Lignite
& Peat-- Transport
Handling
& Storage
BROWN COAL
CARBONACEOUS MATERIALS
CENTRIFUGATION
COAL
COAL RANK
COMPARATIVE EVALUATIONS
CONCENTRATORS
CYCLONE SEPARATORS
DEASHING
DISPERSIONS
ENERGY SOURCES
EQUIPMENT
FILTERS
FOSSIL FUELS
FUEL SLURRIES
FUELS
HYDROTHERMAL ALTERATION
INERTIAL SEPARATORS
LIGNITE
MATERIALS
MIXTURES
POLLUTION CONTROL EQUIPMENT
REMOVAL
SEPARATION EQUIPMENT
SEPARATION PROCESSES
SLURRIES
SUBBITUMINOUS COAL
SUSPENSIONS
WATER REMOVAL