Testing and verification of granular filters for removal of particulate and alkalies. Final report

Technical Report · Sun Apr 01 04:00:00 EST 1984

OSTI ID:6020663

This report describes the testing and evaluation of a shallow bed granular filter (GBF) concept for Pressurized, Fluidized Bed Combustion (PFBC) application. The GBF is a device on which the dustladen gas passes through a shallow bed of granular media, depositing the particulate matter on the surface of the bed forming a dust cake. The bed media is cleaned by a reverse flush that gently fluidizes the bed and elutriates the collected particulate matter from the system. A 500 acfm subpilot scale GBF was built and tested at simulated PFBC operating conditions. Two different GBF configurations have been evaluated accounting for over 220 hours of testing (cumulative) and 615 cleaning cycles. Test variables have included bed media, filter flow face velocity, backflush conditions and dust loading. In addition to the subpilot scale test work, a modified single bed, bench scale GBF unit was evaluated as an improved design approach for PFBC conditions. Results of this work showed that the overall performance of the GBF can be improved if the system can be cleaned without fluidizing the bed media. This has resulted in redefining backflush conditions and the choice of bed media. The possibility of utilizing the GBF to remove both particulate and alkali has also been explored. Implementing an alkali gettering media as part of the GBF bed media would be possible but would require significantly deeper beds than anticipated in the current shallow bed, GBF concept. 27 references, 135 figures, 40 tables.

• Research Organization: Westinghouse Electric Corp., Pittsburgh, PA (USA). Research and Development Center
• DOE Contract Number: AC21-80ET17093
• OSTI ID: 6020663
• Report Number(s): DOE/ET/17093-1741; ON: DE85007168
• Country of Publication: United States
• Language: English

Related Subjects

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& Peat-- Waste Management
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200202 -- Fossil-Fueled Power Plants-- Waste Management-- Noxious Gas & Particulate Emissions
BENCH-SCALE EXPERIMENTS
BITUMINOUS COAL
BLACK COAL
CARBONACEOUS MATERIALS
CHEMICAL REACTIONS
COAL
COMBUSTION
COST
DATA
DENITRIFICATION
DESIGN
DESULFURIZATION
DUSTS
ECONOMIC ANALYSIS
ECONOMICS
ELUTRIATION
ENERGY SOURCES
EXPERIMENTAL DATA
FILTERS
FLUIDIZED-BED COMBUSTION
FOSSIL FUELS
FOSSIL-FUEL POWER PLANTS
FUELS
GRANULAR BED FILTERS
HOT GAS CLEANUP
INFORMATION
MATERIALS
MATHEMATICAL MODELS
MECHANICAL FILTERS
MEDIUM PRESSURE
NUMERICAL DATA
OPERATING COST
OXIDATION
PARTICLES
PARTICULATES
PERFORMANCE TESTING
POWER PLANTS
PRESSURE DEPENDENCE
PURIFICATION
SEPARATION PROCESSES
SUBBITUMINOUS COAL
TESTING
THERMAL POWER PLANTS
THERMOCHEMICAL PROCESSES
VERY HIGH TEMPERATURE