Use potential of ash from circulating pressurized fluidized bed combustors using low-sulfur subbituminous coal

Conference · Sat Dec 30 23:00:00 EST 1995

OSTI ID:287986

Bland, A E; Brown, T H ^[1]; Georgiou, D N ^[2]; Young, L J ^[3]; Ashbaugh, M B ^[4]; Wheeldon, J ^[5]

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1. Western Research Inst., Laramie, WY (United States)
2. Trow Consulting Engineers, Thunder Bay, Ontario (Canada)
3. Ahlstrom Pyropower Inc., San Diego, CA (United States)
4. Dept. of Energy, Morgantown, WV (United States). Morgantown Energy Technology Center
5. Electric Power Research Inst., Palo Alto, CA (United States)

The commercial introduction of pressurized fluidized bed combustion (PFBC) has spurred evaluation of ash management options for this technology. The unique operating characteristics of PFBC compared to atmospheric fluidized bed combustion (AFBC) units indicates that PFBC ash will exhibit unique chemical and physical characteristics, and hence, unique ash use opportunities. Western Research Institute (WRI) has initiated a study of the use properties of PFBC ashes involving both an assessment of the potential markets, as well as a technical feasibility study of specific use options. The market assessment is designed to address six applications including: (1) structural fill, (2) road base construction, (3) supplementary cementing materials in portland cement, (4) bricks and blocks, (5) synthetic aggregate, and (6) agricultural/soil amendment applications. Ashes from the Ahlstrom circulating PFBC pilot facility in Karhula, Finland, combusting western US low-sulfur subbituminous coal with limestone sorbent, were made available for the technical feasibility study. The technical feasibility study examined the use of PFBC ash in construction related applications, including its use as a supplemental cementing material in concrete, fills and embankments, soil stabilization, and synthetic aggregate production. In addition, testing was conducted to determine the technical feasibility of PFBC ash as a soil amendment for agriculture and reclamation applications.

• DOE Contract Number: FC21-93MC30127
• OSTI ID: 287986
• Report Number(s): CONF-950522--; ISBN 0-7918-1305-3
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
20 FOSSIL-FUELED POWER PLANTS
AGRICULTURE
ASHES
BACKFILLING
BRICKS
CALCIUM CARBONATES
CALCIUM SULFATES
CEMENTS
CHEMICAL COMPOSITION
COMPRESSION STRENGTH
DENSITY
EXPANSION
FEASIBILITY STUDIES
FLUIDIZED-BED COMBUSTION
FLUIDIZED-BED COMBUSTORS
FLY ASH
FOUNDATIONS
GRANULAR MATERIALS
MATERIALS TESTING
MOISTURE
PARTICLE SIZE
PERMEABILITY
PRESSURIZATION
RESOURCE POTENTIAL
ROADS
SOILS
SORBENT INJECTION PROCESSES
STABILIZATION
SUBBITUMINOUS COAL
WASTE PRODUCT UTILIZATION
X-RAY DIFFRACTION