Effects of Orifice Orientation and Gas-Liquid Flow Pattern on Initial Bubble Size

doi:10.1016/S1004-9541(13)60630-8

Chinese Journal of Chemical Engineering ›› 2013, Vol. 21 ›› Issue (11): 1206-1215.DOI: 10.1016/S1004-9541(13)60630-8

Effects of Orifice Orientation and Gas-Liquid Flow Pattern on Initial Bubble Size

刘长军¹, 梁斌¹, 唐盛伟¹, 闵恩泽²

1 Multi-phases Mass Transfer and Reaction Engineering Laboratory, College of Chemical Engineering, Sichuan University, Chengdu 610065, China;
2 SINOPEC Research Institute of Petroleum Processing, Beijing 100083, China

收稿日期:2012-06-30 修回日期:2012-10-18 出版日期:2013-11-28 发布日期:2013-11-26
通讯作者: LIANG Bin
基金资助:
Supported by the National Natural Science Foundation of China (20736009).

Effects of Orifice Orientation and Gas-Liquid Flow Pattern on Initial Bubble Size

LIU Changjun¹, LIANG Bin¹, TANG Shengwei¹, MIN Enze²

1 Multi-phases Mass Transfer and Reaction Engineering Laboratory, College of Chemical Engineering, Sichuan University, Chengdu 610065, China;
2 SINOPEC Research Institute of Petroleum Processing, Beijing 100083, China

Received:2012-06-30 Revised:2012-10-18 Online:2013-11-28 Published:2013-11-26
Contact: LIANG Bin
Supported by:
Supported by the National Natural Science Foundation of China (20736009).

摘要/Abstract

摘要： In many gas-liquid processes, the initial bubble size is determined by a series of operation parameters along with the sparger design and gas-liquid flow pattern. Bubble formation models for variant gas-liquid flow patterns have been developed based on force balance. The effects of the orientation of gas-liquid flow, gas velocity, liquid velocity and orifice diameter on the initial bubble size have been clarified. In ambient air-water system, the suitable gas-liquid flow pattern is important to obtain smaller bubbles under the low velocity liquid cross-flow conditions with stainless steel spargers. Among the four types of gas-liquid flow patterns discussed, the horizontal orifice in a vertically upward liquid flow produces the smallest initial bubbles. However the orientation effects of gas and liquid flow are found to be insignificant when liquid velocity is higher than 3.2 m·s^-1 or the orifice diameter is small enough.

关键词: bubble column, bubble, design, mathematical modeling, multiphase flow, sparger

Abstract: In many gas-liquid processes, the initial bubble size is determined by a series of operation parameters along with the sparger design and gas-liquid flow pattern. Bubble formation models for variant gas-liquid flow patterns have been developed based on force balance. The effects of the orientation of gas-liquid flow, gas velocity, liquid velocity and orifice diameter on the initial bubble size have been clarified. In ambient air-water system, the suitable gas-liquid flow pattern is important to obtain smaller bubbles under the low velocity liquid cross-flow conditions with stainless steel spargers. Among the four types of gas-liquid flow patterns discussed, the horizontal orifice in a vertically upward liquid flow produces the smallest initial bubbles. However the orientation effects of gas and liquid flow are found to be insignificant when liquid velocity is higher than 3.2 m·s^-1 or the orifice diameter is small enough.

Key words: bubble column, bubble, design, mathematical modeling, multiphase flow, sparger

刘长军, 梁斌, 唐盛伟, 闵恩泽. Effects of Orifice Orientation and Gas-Liquid Flow Pattern on Initial Bubble Size[J]. Chinese Journal of Chemical Engineering, 2013, 21(11): 1206-1215.

LIU Changjun, LIANG Bin, TANG Shengwei, MIN Enze. Effects of Orifice Orientation and Gas-Liquid Flow Pattern on Initial Bubble Size[J]. Chin.J.Chem.Eng., 2013, 21(11): 1206-1215.

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Effects of Orifice Orientation and Gas-Liquid Flow Pattern on Initial Bubble Size

Effects of Orifice Orientation and Gas-Liquid Flow Pattern on Initial Bubble Size

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