Recovery of silica from the gasification of rice husks/coal in the presence of a pilot flame in a modified fluidized bed
- Dept. of Chemical Engineering, National Cheng Kung Univ., Tainan (TW)
Combustion of rice husks with and without coal in the presence of a pilot flame in a modified fluidized bed was investigated in the present study. The process was employed to produce raw silica from rice husks by burning off other organic matters. The chemical and physical properties of both the top and the bottom products from the rice husk combustion were found to be strongly influenced by two major factors: the feed rate and the feed composition. It has also been found that coal fed along with rice husks to the combustion process permits easy control of the properties of both solid products and significantly reduces the agglomerating phenomena that occur often in the process. The temperature distribution of the fluidized bed, which reflects the bed operating characteristics, was measured and observed to depend on the frequency of pulsed solid feed.
- OSTI ID:
- 6214856
- Journal Information:
- Industrial and Engineering Chemistry Research; (USA), Vol. 29:9; ISSN 0888-5885
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
01 COAL, LIGNITE, AND PEAT
AGRICULTURAL WASTES
FLUIDIZED-BED COMBUSTION
COAL
RICE
SILICA
RECOVERY
CHEMICAL COMPOSITION
CHEMICAL PROPERTIES
CHEMICAL REACTORS
PHYSICAL PROPERTIES
TEMPERATURE DISTRIBUTION
CARBONACEOUS MATERIALS
CEREALS
CHALCOGENIDES
CHEMICAL REACTIONS
COMBUSTION
ENERGY SOURCES
FOSSIL FUELS
FUELS
GRAMINEAE
LILIOPSIDA
MAGNOLIOPHYTA
MATERIALS
MINERALS
ORGANIC WASTES
OXIDATION
OXIDE MINERALS
OXIDES
OXYGEN COMPOUNDS
PLANTS
SILICON COMPOUNDS
SILICON OXIDES
THERMOCHEMICAL PROCESSES
WASTES
090900* - Biomass Fuels- Processing- (1990-)
320305 - Energy Conservation
Consumption
& Utilization- Industrial & Agricultural Processes- Industrial Waste Management
092000 - Biomass Fuels- Combustion- (1990-)
014000 - Coal
Lignite
& Peat- Combustion