Mechanisms of alkali metal release during biomass combustion
Conference
·
OSTI ID:214754
- National Renewable Energy Lab., Golden, CO (United States)
A limiting factor in using solid biomass fuels for electricity production is the accelerated fouling and slagging caused by alkali metal release during biomass combustion. A detailed understanding of alkali release mechanisms during biomass combustion as well as identification of these alkali metal species will provide insights as to how these vapors enhance deposit formation in power generating facilities. A molecular beam mass spectrometer (MBMS) system, in conjunction with a variable-temperature quartz tube reactor, was used to directly sample the hot gases liberated from the combustion of small (20-60-mg) biomass samples. The results of these laboratory studies indicate that initial feedstock composition has the most pronounced effect on the amount and form of the alkali metal released during biomass combustion. Four alkali metal release mechanisms have been identified based on the various biomass feedstocks investigated.
- OSTI ID:
- 214754
- Report Number(s):
- CONF-950801--
- Country of Publication:
- United States
- Language:
- English
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