循环流化床CO2吸收器捕集过程的数值模拟

摘要

On the basis of double-fluid model,a simulation was performed in circulating fluidized bed absor-bor for carbon dioxide capture process,considered of calculating the inter-phase drag coefficient based on multi-scale approach.The effects of operating velocity,particle diameter and solid inventory on CO2 remov-al are analyzed.The results indicate that CO2 removal will be enhanced with the decreasing inlet velocity, and improving the particle size and solid inventory will lead to an increase in CO2 removal.%以双流体模型为基础,通过考虑颗粒聚团结构的曳力系数模型来计算非均匀气固相间曳力系数,对循环流化床CO2吸收器内CO2的捕集过程进行了模拟研究,并分析了操作速度、颗粒粒径以及固储量对 CO2去除率的影响。结果表明,随着操作速度的降低,CO2去除率得到了明显的提高,颗粒粒径的增大以及固储量的增加在一定程度上促进了CO2的吸收。