Hot-gas filter ash characterization

Technical Report · Wed Nov 01 04:00:00 EST 1995

DOI:https://doi.org/10.2172/124997· OSTI ID:124997

Hurley, J P; Strobel, T M; Dockter, B A

One of the key difficulties in the development of advanced pressurized fluidized-bed combustion (PFBC) and integrated gasification combined-cycle (IGCC) systems is the need to remove particulates from the gas stream at high temperatures and pressures. Research has revealed numerous cases of ash cake buildup on filter elements that has been difficult to remove using on-line jet pulsing. The objectives of this research are to: (1) determine the mechanisms by which a difficult-to-clean ash is formed and how it blinds or bridges hot-gas filters; (2) develop a method to determine the rate of blinding or bridging based on analyses of the feed coal and sorbent and on the operating conditions; and (3) provide suggestions for ways to prevent filter blinding and bridging by the troublesome ash. Four tasks are being performed: Task 1--field sampling and archive sample analysis; Task 2--laboratory-scale testing; Task 3--bench-scale testing; and Task 4--computer modeling. Results are presented from the first two tasks.

• Research Organization: North Dakota Univ., Grand Forks, ND (United States). Energy and Environmental Research Center
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: FC21-93MC30098
• OSTI ID: 124997
• Report Number(s): DOE/MC/30098--96/CO535; CONF-9506162--22; ON: DE96002034
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
ADSORBENTS
ASHES
BITUMINOUS COAL
CHEMICAL PROPERTIES
CLEANING
DEASHING
DEPOSITION
DOLOMITE
EXPERIMENTAL DATA
FILTERS
FLOW BLOCKAGE
FLUIDIZED BED BOILERS
FOSSIL-FUEL POWER PLANTS
FUEL GAS
HOT GAS CLEANUP
MINERALOGY
PARTICLE SIZE
PERFORMANCE TESTING
PHYSICAL PROPERTIES
PRESSURIZATION
SAMPLING