Limiting Gas Liquid Flows and Mass Transfer in a Novel Rotating Packed Bed (HiGee)
Limiting Gas Liquid Flows and Mass Transfer in a Novel Rotating Packed Bed (HiGee)
复制标题
DOI：
10.1021/ie100899r
复制
发表时间：
2011-01-19
影响因子：
4.2
通讯作者：
Kaistha, Nitin
中科院分区：
文献类型：
--
作者：
Rajan, Shashikant;Kumar, Milan;Kaistha, Nitin
研究了采用新型剖分式填料的旋转填料床的液泛和传质特性。空气-水体系用于表征驱替行为，而传质研究CO2在NaOH水溶液中的化学吸附。Danckwert的化学方法被用来推断传质的有效比界面面积（a（e））。测定了液相体积传质系数k（L）a（e）随操作条件的变化。与同向旋转相比，对于相邻填料环的反向旋转，观察到a（e）和k（L）a（e）的一致更高的值。的洪水和传质结果进行了比较，与现有的文献数据的填充柱和传统的HiGee的过程强化潜力的新型HiGee的评估。溢流极限与常规HiGee相当，而报告的a（e）和k（L）a（e）值更高。
The flooding and mass transfer characteristics of a rotating packed bed (RPB) incorporating the split packing design innovation is studied. The air-water system is used for characterizing the flooding behavior, while mass transfer is studied for the chemisorption of CO2 in aqueous NaOH. Danckwert's chemical method is used to infer the effective specific interfacial area (a(e)) for mass transfer. The variation in the liquid side volumetric mass transfer coefficient (k(L)a(e)) with operating conditions is also measured. Consistently higher values of a(e) and k(L)a(e) are observed for counter-rotation of the adjacent packing rings compared to co-rotation. The flooding and mass transfer results are compared with existing literature data on packed columns and conventional HiGee to evaluate the process intensification potential of the novel HiGee. The flooding limits are comparable to conventional HiGee, while the reported a(e) and k(L)a(e) values are higher.