GranuFlow{trademark} -- A technology for reducing moisture and enhancing coal handleability

Conference · Wed Jul 01 04:00:00 EDT 1998

OSTI ID:20012978

Zitron, Z; Harrison, C; Akers, D

Coal fines can be fired as a coal water slurry (CWS); however, the increased moisture increases transportation costs per unit of useful energy and special storage and firing systems are required at the power station. CWS does reduce NOx emissions, but the increased moisture loading on the boiler will increase CO{sub 2} emissions. The US Department of Energy's Federal Energy Technology Center (DOE-FETC) has developed a technology, called GranuFlow{trademark}, to address the problems associated with fine coal. GranuFlow{trademark} involves adding a small amount of bitumen or heavy oil emulsion, such as Orimulsion{trademark}, to fine coal before it is dewatered to deliver a more energy intense and more handleable fuel to power plants and industrial facilities. By allowing the recovery of waste fine coal, the GranuFlow{trademark} technology allows better utilization of the Nation's energy resources. As a waste product, pond fines can be available at low cost and the GranuFlow{trademark} technology allows the use of this low cost fuel in existing utility boilers. This not only reduces fuel costs, but provides an environmental benefit by making it economically feasible to restore abandoned slurry impoundments. The technology also benefits coal users and producers by allowing increased recovery of fine coal during cleaning and by reducing the moisture content of clean coal.

• Research Organization: CQ Inc. (US)
• OSTI ID: 20012978
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
BITUMENS
COAL FINES
COAL PREPARATION
MATERIALS RECOVERY
PERFORMANCE
SETTLING PONDS
WASTE PRODUCT UTILIZATION
WATER REMOVAL