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Liquid‐bridge flow in the channel of helical string and its application to gas–liquid contacting process
Author(s) -
Cong Haifeng,
Zhao Zhenyu,
Li Xingang,
Li Hong,
Gao Xin
Publication year - 2018
Publication title -
aiche journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.958
H-Index - 167
eISSN - 1547-5905
pISSN - 0001-1541
DOI - 10.1002/aic.16176
Subject(s) - pressure drop , flow (mathematics) , residence time distribution , liquid flow , residence time (fluid dynamics) , mechanics , drop (telecommunication) , chemistry , liquid liquid , chromatography , materials science , mechanical engineering , engineering , physics , geotechnical engineering
To solve the problems of the traditional packings, such as high pressure drop, mal‐distribution and short liquid residence time, a helical flow structured packings was proposed. Two different flow patterns, liquid‐bridge flow and liquid‐drop flow were identified when the width of the channel of the helical string was adjusted. Moreover, the characteristics of the helical liquid‐bridge flow including maximum liquid loading, mean thickness of liquid film, mean residence time and effective specific surface area, were examined. And the separation efficiency was studied by the lab‐scale distillation column. In comparison, the effective specific surface area of the helical flow type packings is almost as large as the traditional B1‐350Y structured packings, but with thinner liquid film, longer liquid residence time and finally higher separation efficiency. © 2018 American Institute of Chemical Engineers AIChE J , 64: 3360–3368, 2018