Effect Of Calcination Temperature And Extent On The Multi-Cycle Co2 Carrying Capacity Of Lime-Based Sorbents
JOURNAL OF CO2 UTILIZATION(2021)
摘要
This paper investigates the effect of calcination temperature and duration on the cyclic CO2 capture performance of natural lime-based sorbents. Tests showed that increasing calcination temperature considerably reduced the sorbent reactivity over the first few calcination-carbonation cycles. No significant variation in performance was observed when a sorbent remained at the calcination temperature after completing limestone decomposition. On the other hand, incomplete limestone calcination significantly altered the sorbent cyclic utilization and CO2 carrying capacity. A semi-empirical method is proposed to estimate the fast reaction-controlled carbonation extent at different reaction cycles, calcination extents and temperatures. This method is shown to work well for two different naturally-derived limestones exposed to different calcination conditions.
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关键词
CO2 capture, Limstone, CO2 sorbent cyclic utilization, CO2 carrying capacity, Calcination and carbonation
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