GAS-LIQUID MASS TRANSFER: A COMPARISON OF DOWN- AND UP-PUMPING AXIAL FLOW IMPELLERS WITH RADIAL IMPELLERS
GAS-LIQUID MASS TRANSFER: A COMPARISON OF DOWN- AND UP-PUMPING AXIAL FLOW IMPELLERS WITH RADIAL IMPELLERS
复制标题
DOI：
10.1205/cerd.82.12.1589.58030
复制
发表时间：
2004-12
影响因子：
3.9
通讯作者：
R. Sardeing;J. Aubin;C. Xuereb
中科院分区：
文献类型：
--
作者：
R. Sardeing;J. Aubin;C. Xuereb
在小型实验室容器中，对上下泵斜叶片涡轮机和A315的气液分散和传质性能进行了评价，并与Rushton和Scaba涡轮机的性能进行了比较。结果表明，当轴流式叶轮运行在上泵送模式下时，整体性能比下泵送配置有很大的改善。与径流式涡轮机相比，上泵式A315具有与Scaba涡轮机相当的高气体处理能力，并且在传质方面比两种涡轮机都更经济有效。另一方面，向上泵送的倾斜叶片涡轮机不太适合于这种应用。最后，在所有研究的叶轮中，处于下抽模式的轴流式叶轮具有最低的性能，尽管A315是倾斜叶片涡轮机的优选。
The performance of a down- and up-pumping pitched blade turbine and A315 for gas–liquid dispersion and mass transfer was evaluated and then compared with that of Rushton and Scaba turbines in a small laboratory-scale vessel. The results show that, when the axial flow impellers are operated in the up-pumping mode, the overall performance is largely improved compared with the down-pumping configuration. Compared with the radial turbines, the up-pumping A315 has a high gas handling capacity, equivalent to the Scaba turbine, and is economically much more efficient in terms of mass transfer than both turbines. On the other hand, the up-pumping pitched blade turbine is not as well adapted to such applications. Finally, the axial flow impellers in the down-pumping mode have the lowest performance of all the impellers studied, although the A315 is preferred of the pitched blade turbine.