Carbon Capture and Sequestration (CCS) technology to slow global warming is a challenge to be solved worldwide. In this study, a dual circulating fluidized bed process using a solid-sorbent was developed for the post-combustion CO₂ capture process from a pulverized coal power plant. This solid-sorbent-based CO₂ capture process consists of absorber, regenerator, and standpipes in between them. An amine-functionalized silica was utilized as a solid-sorbent, and a bench-scale facility capable of treating flue gas of 20 Nm³/hr was constructed for the performance verification. As a result, when the sorbent to CO₂ ratio was 24.6 wt/wt%, a CO₂ capture efficiency of 80% or more was obtained, and the maximum CO₂ working capacity was 4.5 wt%. A long-term stability was verified in the bench-scale facility and, as a result, the sorption capacity decreased by 5% for about 800 cycles. In addition, a solid-solid indirect heat exchanger was applied at the upper part of the absorber to partially recover solid sensible energy to reduce the regeneration energy. The sorbent loading inside the tube affects the heat transfer efficiency, and the heat transfer coefficient ranges from 8 to 10.5 W/m²-K.

碳捕获和封存（CCS）技术来减缓全球变暖是一项需要在全球范围内解决的挑战。在这项研究中，开发了一种使用固体吸附剂的双循环流化床工艺，用于粉煤电厂的燃烧后CO ₂捕集工艺。这种基于固体吸附剂的CO ₂捕获过程由吸收器，蓄热器和位于它们之间的竖管组成。利用胺官能化的二氧化硅作为固体吸附剂，并构建了能够处理20 Nm ³ / hr的烟道气的台式规模的设备进行性能验证。结果，当吸附剂与CO _2的比率为24.6wt / wt％时，获得了80％以上的CO ₂捕集效率，并且最大CO_2个工作容量为4.5重量％。在实验室规模的设备中证实了其长期稳定性，结果，在约800个循环中，吸附能力下降了5％。此外，在吸收塔的上部安装了固-固间接热交换器，以部分回收固体显能，以减少再生能。管内的吸附剂负载影响传热效率，并且传热系数在8至10.5 W / m ² -K的范围内。