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

In many gasliquid processes, the initial bubble size is determined by a series of operation parameters along with the sparger design and gasliquid flow pattern. Bubble formation models for variant gasliquid flow pat terns have been developed based on force balance. The effects of the orientation of...

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Bibliographic Details
Published inChinese journal of chemical engineering Vol. 21; no. 11; pp. 1206 - 1215
Main Author 刘长军 梁斌 唐盛伟 闵恩泽
Format Journal Article
LanguageEnglish
Published Elsevier B.V 01.11.2013
Subjects
bubble
bubble column
Bubbles
Chemical engineering
Computational fluid dynamics
design
Design engineering
Liquid flow
Liquids
mathematical modeling
multiphase flow
Orientation
sparger
Spargers
不锈钢排气管
孔板
气体流速
气泡
气液
流动模式
流型
液体流速
mathematical modeling
sparger
multiphase flow
bubble column
bubble
design
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Summary:In many gasliquid processes, the initial bubble size is determined by a series of operation parameters along with the sparger design and gasliquid flow pattern. Bubble formation models for variant gasliquid flow pat terns have been developed based on force balance. The effects of the orientation of gasliquid flow, gas velocity, liquid velocity and orifice diameter on the initial bubble size have been clarified. In ambient airwater system, thesultable gasllquid flow pattern is important to obtain smaller bubbles under the low velocity liquid crossflow con ditions with stainless steel spargers. Among the four types of gasliquid 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 tobe insgnifican whenliq.uid velocity is.higher than. 3.2 m;sa or theorifice diameter is small enough.
Bibliography:11-3270/TQ
In many gasliquid processes, the initial bubble size is determined by a series of operation parameters along with the sparger design and gasliquid flow pattern. Bubble formation models for variant gasliquid flow pat terns have been developed based on force balance. The effects of the orientation of gasliquid flow, gas velocity, liquid velocity and orifice diameter on the initial bubble size have been clarified. In ambient airwater system, thesultable gasllquid flow pattern is important to obtain smaller bubbles under the low velocity liquid crossflow con ditions with stainless steel spargers. Among the four types of gasliquid 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 tobe insgnifican whenliq.uid velocity is.higher than. 3.2 m;sa or theorifice diameter is small enough.
bubble column, bubble, design, mathematical modeling, multiphase flow, sparger
ObjectType-Article-2
SourceType-Scholarly Journals-1
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content type line 23
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ISSN:1004-9541
2210-321X
DOI:10.1016/S1004-9541(13)60630-8