Mass transfer performance of countercurrent rotating packed bed in absorbing isopropanol gas
ZHANG Chun-yang, YUAN Zhi-guo, DUAN Xi-fan, DUAN Shan-shan, LIU You-zhi
Research Center of Shanxi Province for Higee-Oriented Chemical Engineering and Technology, Shanxi Provincial Key Laboratory of Higee-Oriented Chemical Engineering, North University of China, Taiyuan 030051, China
Abstract: Isopropanol gas is adsorbed by water in a countercurrent rotating packed bed (RPB).The effects of operating parameters on the total volumetric mass transfer coefficient KGa and absorption rate E of isopropanol gas are explored,including high-gravity factor β,empty bed gas velocity u,liquid spray density q and isopropanol gas inlet concentration.It is found that KGa value increases with the increases of β,u and q.Isopropanol gas inlet concentration has small impact on KGa and E.Absorption rate E will increases as β and q increase,but decrease as u increases.Under the conditions that β=60,u=0.9 m·s-1,q=15.92 m3/(m2·h) and the inlet concentration of isopropyl alcohol is 10 000 ppm,the absorption rate of isopropyl alcohol can reach 97%,KGa value reaches 21.7 s-1,which is 2.1-3.2 times that in a countercurrent RPB with blade packing,4-6.2 times that in a cross-flow RPB with blade packing.It illustrates that countercurrent RPB can effectively enhance the mass transfer process when absorbing isopropanol gas.
张春阳, 袁志国, 段稀凡, 段姗姗, 刘有智. 逆流旋转填料床吸收异丙醇气体的传质性能研究[J]. 现代化工, 2020, 40(9): 80-84.
ZHANG Chun-yang, YUAN Zhi-guo, DUAN Xi-fan, DUAN Shan-shan, LIU You-zhi. Mass transfer performance of countercurrent rotating packed bed in absorbing isopropanol gas. Modern Chemical Industry, 2020, 40(9): 80-84.
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