Measurement of gas holdups and sauter mean bubble diameters in bubble column reactors by dynamics gas disengagement method

J. G. Daly, S. A. Patel, D. B. Bukur

Research output: Contribution to journalArticle

70 Citations (Scopus)

Abstract

In the present study pressure transducer signals were used to measure the rate of liquid level drop during the bubble disengagement process. This enables one to use the dynamic gas disengagement method in opaque systems (i.e. industrial reactors operating at high pressures, and/or temperature) and has some advantages in comparison to analysis based on visual observations of the expanded height during large bubble disengagement. Methodology for analyzing raw data and obtaining bubble size distribution (i.e. Sauter mean bubble diameter) is described. The theory is illustrated with data obtained in bubble columns 0.05 and 0.21 m in diameter and 3 m tall in a molten wax - nitrogen system at 265°C and atmospheric pressure for superficial gas velocities up to 0.12 m/s. Results obtained from analysis of data from pressure transducers, were found to be in excellent agreement with those obtained previously from visual observations of the dispersion during the disengagement process (Patel ., 1990).

Original languageEnglish
Pages (from-to)3647-3654
Number of pages8
JournalChemical Engineering Science
Volume47
Issue number13-14
DOIs
Publication statusPublished - 1992
Externally publishedYes

Fingerprint

Bubble Column
Bubble columns
Pressure transducers
Gas dynamics
Gas Dynamics
Bubbles (in fluids)
Reactor
Bubble
Gases
Waxes
Transducer
Atmospheric pressure
Molten materials
Nitrogen
Liquids
Liquid
Temperature
Gas
Methodology
Observation

Keywords

  • bubble column reactor
  • dynamic disengagement
  • Fischer-Tropsch synthesis
  • gas holdup
  • gas-liquid interfacial area

ASJC Scopus subject areas

  • Chemical Engineering(all)

Cite this

Measurement of gas holdups and sauter mean bubble diameters in bubble column reactors by dynamics gas disengagement method. / Daly, J. G.; Patel, S. A.; Bukur, D. B.

In: Chemical Engineering Science, Vol. 47, No. 13-14, 1992, p. 3647-3654.

Research output: Contribution to journalArticle

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AU - Patel, S. A.

AU - Bukur, D. B.

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N2 - In the present study pressure transducer signals were used to measure the rate of liquid level drop during the bubble disengagement process. This enables one to use the dynamic gas disengagement method in opaque systems (i.e. industrial reactors operating at high pressures, and/or temperature) and has some advantages in comparison to analysis based on visual observations of the expanded height during large bubble disengagement. Methodology for analyzing raw data and obtaining bubble size distribution (i.e. Sauter mean bubble diameter) is described. The theory is illustrated with data obtained in bubble columns 0.05 and 0.21 m in diameter and 3 m tall in a molten wax - nitrogen system at 265°C and atmospheric pressure for superficial gas velocities up to 0.12 m/s. Results obtained from analysis of data from pressure transducers, were found to be in excellent agreement with those obtained previously from visual observations of the dispersion during the disengagement process (Patel ., 1990).

AB - In the present study pressure transducer signals were used to measure the rate of liquid level drop during the bubble disengagement process. This enables one to use the dynamic gas disengagement method in opaque systems (i.e. industrial reactors operating at high pressures, and/or temperature) and has some advantages in comparison to analysis based on visual observations of the expanded height during large bubble disengagement. Methodology for analyzing raw data and obtaining bubble size distribution (i.e. Sauter mean bubble diameter) is described. The theory is illustrated with data obtained in bubble columns 0.05 and 0.21 m in diameter and 3 m tall in a molten wax - nitrogen system at 265°C and atmospheric pressure for superficial gas velocities up to 0.12 m/s. Results obtained from analysis of data from pressure transducers, were found to be in excellent agreement with those obtained previously from visual observations of the dispersion during the disengagement process (Patel ., 1990).

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