Hydrodynamic behavior of a bubble column with Venturi-Type gas Distributors: Gas holdup and bubble properties.
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| Title: | Hydrodynamic behavior of a bubble column with Venturi-Type gas Distributors: Gas holdup and bubble properties. |
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| Authors: | Chang, Ye Ji1 (AUTHOR), Son, Haeun1 (AUTHOR), Kim, Suyoung2 (AUTHOR), Kim, Sung Won1,2 (AUTHOR) kswcfb@ut.ac.kr |
| Source: | Journal of Industrial & Engineering Chemistry. Jun2026, Vol. 158, p799-808. 10p. |
| Subjects: | Bubble column reactors, Bubble dynamics, Hydrodynamics, Heat transfer, Fluid dynamics |
| Abstract: | [Display omitted] • A Venturi bubble generator distributor was first proposed for bubble columns. • Throat diameter of 3 mm & diverging angle of 32.5° are optimal geometric parameters. • The optimal operating range was identified at gas-to-liquid ratio of 2.0 – 6.5. • A distributor with two VBGs was the most effective configuration for bubble column. Venturi-type bubble generators (VBGs) as gas distributors were evaluated for gas holdup (ε g) and the bubble properties governing heat and mass transfer in bubble columns. Experiments with a bubble column (0.15 m I.D. × 2.00 m high) were conducted to determine the optimal VBG geometry, gas–liquid loading ratio (m th), and distributor configuration under forced gas supply. Decreasing the throat diameter (D th = 3–5 mm) enhanced the Venturi effect, resulting in higher ε g and lower relative standard deviation (RSD) of pressure fluctuations with formation of smaller bubbles. A D th of 3 mm exhibited a low and narrow power spectral density and high average frequency (f avg) corresponding to a uniform distribution of fine bubbles. Diverging angle variation (β = 15–42.5°) revealed that maximum ε g and f avg at 32.5°. Under the optimal geometry (D th of 3 mm and β = 32.5°), the optimal m th was identified as 2.0–6.5. Multiple VBGs tests demonstrated that increasing VBG number reduced bubble-free regions, but caused bubble-stream interference. A distributor with two VBGs exhibited higher ε g by a factor of 1.33 compared to a single VBG while maintaining stable operation with small bubble sizes, identifying the most effective configuration for VBG-based bubble columns. [ABSTRACT FROM AUTHOR] |
| Copyright of Journal of Industrial & Engineering Chemistry is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
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| Items | – Name: Title Label: Title Group: Ti Data: Hydrodynamic behavior of a bubble column with Venturi-Type gas Distributors: Gas holdup and bubble properties. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Chang%2C+Ye+Ji%22">Chang, Ye Ji</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Son%2C+Haeun%22">Son, Haeun</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Kim%2C+Suyoung%22">Kim, Suyoung</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Kim%2C+Sung+Won%22">Kim, Sung Won</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<i> kswcfb@ut.ac.kr</i> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Journal+of+Industrial+%26+Engineering+Chemistry%22">Journal of Industrial & Engineering Chemistry</searchLink>. Jun2026, Vol. 158, p799-808. 10p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Bubble+column+reactors%22">Bubble column reactors</searchLink><br /><searchLink fieldCode="DE" term="%22Bubble+dynamics%22">Bubble dynamics</searchLink><br /><searchLink fieldCode="DE" term="%22Hydrodynamics%22">Hydrodynamics</searchLink><br /><searchLink fieldCode="DE" term="%22Heat+transfer%22">Heat transfer</searchLink><br /><searchLink fieldCode="DE" term="%22Fluid+dynamics%22">Fluid dynamics</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: [Display omitted] • A Venturi bubble generator distributor was first proposed for bubble columns. • Throat diameter of 3 mm & diverging angle of 32.5° are optimal geometric parameters. • The optimal operating range was identified at gas-to-liquid ratio of 2.0 – 6.5. • A distributor with two VBGs was the most effective configuration for bubble column. Venturi-type bubble generators (VBGs) as gas distributors were evaluated for gas holdup (ε g) and the bubble properties governing heat and mass transfer in bubble columns. Experiments with a bubble column (0.15 m I.D. × 2.00 m high) were conducted to determine the optimal VBG geometry, gas–liquid loading ratio (m th), and distributor configuration under forced gas supply. Decreasing the throat diameter (D th = 3–5 mm) enhanced the Venturi effect, resulting in higher ε g and lower relative standard deviation (RSD) of pressure fluctuations with formation of smaller bubbles. A D th of 3 mm exhibited a low and narrow power spectral density and high average frequency (f avg) corresponding to a uniform distribution of fine bubbles. Diverging angle variation (β = 15–42.5°) revealed that maximum ε g and f avg at 32.5°. Under the optimal geometry (D th of 3 mm and β = 32.5°), the optimal m th was identified as 2.0–6.5. Multiple VBGs tests demonstrated that increasing VBG number reduced bubble-free regions, but caused bubble-stream interference. A distributor with two VBGs exhibited higher ε g by a factor of 1.33 compared to a single VBG while maintaining stable operation with small bubble sizes, identifying the most effective configuration for VBG-based bubble columns. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Journal of Industrial & Engineering Chemistry is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1016/j.jiec.2025.12.011 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 10 StartPage: 799 Subjects: – SubjectFull: Bubble column reactors Type: general – SubjectFull: Bubble dynamics Type: general – SubjectFull: Hydrodynamics Type: general – SubjectFull: Heat transfer Type: general – SubjectFull: Fluid dynamics Type: general Titles: – TitleFull: Hydrodynamic behavior of a bubble column with Venturi-Type gas Distributors: Gas holdup and bubble properties. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Chang, Ye Ji – PersonEntity: Name: NameFull: Son, Haeun – PersonEntity: Name: NameFull: Kim, Suyoung – PersonEntity: Name: NameFull: Kim, Sung Won IsPartOfRelationships: – BibEntity: Dates: – D: 25 M: 06 Text: Jun2026 Type: published Y: 2026 Identifiers: – Type: issn-print Value: 1226086X Numbering: – Type: volume Value: 158 Titles: – TitleFull: Journal of Industrial & Engineering Chemistry Type: main |
| ResultId | 1 |
