Gamma densitometry tomography of gas holdup spatial distribution in industrial scale bubble columns

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Gamma-densitometry tomography (GDT) experiments have been performed to measure gas holdup spatial variations in two bubble columns: a 0.19 m inside diameter Lucite column and a 0.48 m inside diameter stainless steel vessel. Air and water were used for the measurements. Horizontal scans at one vertical position in each column were made for several air flow rates. An axi-symmetric tomographic reconstruction algorithm based on the Abel transform has been used to calculate the time averaged gas holdup radial variation. Integration of these profiles over the column cross section has yielded area-averaged gas holdup results, which have been compared with volume-averaged ... continued below

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27 p.

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Shollenberger, K.A.; Torczynski, J.R.; Adkins, D.R.; O`Hern, T.J. & Jackson, N.B. December 31, 1995.

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  • Sandia National Laboratories
    Publisher Info: Sandia National Labs., Albuquerque, NM (United States)
    Place of Publication: Albuquerque, New Mexico

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Description

Gamma-densitometry tomography (GDT) experiments have been performed to measure gas holdup spatial variations in two bubble columns: a 0.19 m inside diameter Lucite column and a 0.48 m inside diameter stainless steel vessel. Air and water were used for the measurements. Horizontal scans at one vertical position in each column were made for several air flow rates. An axi-symmetric tomographic reconstruction algorithm based on the Abel transform has been used to calculate the time averaged gas holdup radial variation. Integration of these profiles over the column cross section has yielded area-averaged gas holdup results, which have been compared with volume-averaged gas holdups determined from differential pressure measurements and from the rise in the air/water interface during gas flow. The results agree reasonably well.

Physical Description

27 p.

Notes

OSTI as DE96007681

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  • Frontiers `95: frontiers in industrial process tomography conference, San Luis Obispo, CA (United States), 29 Oct - 3 Nov 1995

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  • Other: DE96007681
  • Report No.: SAND--95-0129C
  • Report No.: CONF-9510320--1
  • Grant Number: AC04-94AL85000
  • Office of Scientific & Technical Information Report Number: 211664
  • Archival Resource Key: ark:/67531/metadc669686

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

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  • December 31, 1995

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  • June 29, 2015, 9:42 p.m.

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  • April 14, 2016, 3:59 p.m.

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Shollenberger, K.A.; Torczynski, J.R.; Adkins, D.R.; O`Hern, T.J. & Jackson, N.B. Gamma densitometry tomography of gas holdup spatial distribution in industrial scale bubble columns, article, December 31, 1995; Albuquerque, New Mexico. (digital.library.unt.edu/ark:/67531/metadc669686/: accessed October 21, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.