title: Release characteristics of alkali and alkaline earth metallic species during biomass pyrolysis and steam gasification process.
abstract: Investigating the release characteristics of alkali and alkaline earth metallic species (AAEMs) is of potential interest because of AAEM's possible useful service as catalysts in biomass thermal conversion. In this study, three kinds of typical Chinese biomass were selected to pyrolyse and their chars were subsequently steam gasified in a designed quartz fixed-bed reactor to investigate the release characteristics of alkali and alkaline earth metallic species (AAEMs). The results indicate that 53-76% of alkali metal and 27-40% of alkaline earth metal release in pyrolysis process, as well as 12-34% of alkali metal and 12-16% of alkaline earth metal evaporate in char gasification process, and temperature is not the only factor to impact AAEMs emission. The releasing characteristics of AAEMs during pyrolysis and char gasification process of three kinds of biomass were discussed in this paper.
authors.affiliation: State Key Laboratory of Coal Combustion, Huazhong University of Science and Technology, Wuhan 430074, Hubei, China.
authors.forename: Jiang
authors.initials: J
authors.lastname: Long
authors.forename: Hu
authors.initials: H
authors.lastname: Song
authors.forename: Xiang
authors.initials: X
authors.lastname: Jun
authors.forename: Su
authors.initials: S
authors.lastname: Sheng
authors.forename: Sun
authors.initials: S
authors.lastname: Lun-Shi
authors.forename: Xu
authors.initials: X
authors.lastname: Kai
authors.forename: Yao
authors.initials: Y
authors.lastname: Yao
mesh_terms: D000468:Alkalies / Q000032:analysis*; D018533:Biomass; D019149:Bioreactors; D001709:Biotechnology / Q000295:instrumentation / Q000379:methods*; D002606:Charcoal / Q000737:chemistry; D005740:Gases / Q000032:analysis*; D008673:Metals, Alkaline Earth / Q000032:analysis*; D013227:Steam / Q000032:analysis*; D013696:Temperature; D013997:Time Factors
chemical_list: D000468:Alkalies; D005740:Gases; D008673:Metals, Alkaline Earth; D013227:Steam; D002606:Charcoal