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.

本文研究了煅烧温度和持续时间对天然石灰基吸附剂循环CO ₂捕集性能的影响。试验表明，在头几个煅烧-碳酸化循环中，提高煅烧温度会大大降低吸附剂的反应性。当吸附剂完成石灰石分解后仍保持在煅烧温度下时，未观察到性能的显着变化。另一方面，石灰石煅烧不完全显着改变了吸附剂的循环利用率和CO _2。承载能力。提出了一种半经验方法来估计在不同反应周期，煅烧程度和温度下快速反应控制的碳酸化程度。该方法对暴露在不同煅烧条件下的两种天然石灰石效果很好。