Influence of the viscosity on the liquid hold-up in trickle-bed reactors with structured packings
Influence of the viscosity on the liquid hold-up in trickle-bed reactors with structured packings
复制标题
规整填料滴流床反应器中粘度对持液量的影响
DOI：
10.1016/j.cattod.2005.06.040
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发表时间：
2005
期刊：
影响因子：
--
通讯作者：
L. Raynal
中科院分区：
文献类型：
--
作者：
Réda Sidi;L. Raynal
The influence of liquid viscosity on liquid hold-up in structured packings under co-current gas–liquid downward flow operation has been investigated for liquid viscosity from 1 to 20cP. The liquid hold-up has been determined on a 400mm internal diameter column by gamma tomographic cross-sectional measurements. An important influence of the viscosity on the liquid hold-up is observed. It is shown that, the widely used model supported by Bravo et al. [J.L. Bravo, J.A. Rocha, J.R. Fair, Hydrocarbon Process. January (1985) 91] assuming 1D fully established vertical liquid film flow does not agree with the experimental data. From experiments, the different assumptions used in the 1D model are discussed. On the basis of these results, a new correlation is proposed, which enables to calculate the hold-up from the viscosity, the liquid flow rate and the geometry of the packing. A comparison with data of literature is done.
