Alkali Uptake, Release, and Speciation in Fluidized Beds Using Oxygen Carriers.

ABSTRACT: Recent advancements in combustion-related alkali chemistry have been increasingly driven by the adoption of CO₂-neutral fuels, such as bioderived materials and waste, which often contain high amounts of alkali compounds. While alkali compounds may have catalytic effects on, e.g., fuel conversion and tar cracking, they also contribute to fluidized bed agglomeration, ash deposition, and corrosion. A thorough understanding of alkali uptake, release, and emission control is therefore crucial for scaling up and commercializing advanced fuel conversion technologies. This study presents recently developed methods for high-temperature alkali analysis, including (1) a temperature-modulated surface ionization (TMSI) technique for real-time alkali speciation, (2) a laboratory-scale reactor

SUBMITTER: Andersson V 

PROVIDER: S-EPMC11833681 | biostudies-literature | 2025 Feb

REPOSITORIES: biostudies-literature