The role of gas phase momentum in determining gas holdup and hydrodynamic flow regimes in bubble column operations

DOI Web Site Web Site 被引用文献10件

書誌事項

公開日
1994-02
権利情報
  • http://onlinelibrary.wiley.com/termsAndConditions#vor
DOI
  • 10.1002/cjce.5450720102
公開者
Wiley

この論文をさがす

説明

<jats:title>Abstract</jats:title><jats:p>Experiments conducted in 0.15 m diameter bubble columns using water and non‐aqueous liquids have shown that the gas velocity at which transition from the bubbly flow to the churn‐turbulent flow regime occurs is a function of gas density. The transition velocity increased with increasing gas density. The direct effect of gas density on gas holdup in the bubbly flow regime is small with only a slight increase in holdup being observed at higher densities (ϵ<jats:sub>G</jats:sub> α ρ<jats:sub>g</jats:sub> <jats:sup>0.04</jats:sup>). In the churnturbulent region a much greater effect of gas density on gas holdup was observed. These differences were found to be a direct function of the differences in holdup values at the transition points. Gas holdup was found to be a function of the gas phase momentum. In the bubbly flow regime holdup was directly proportional to momentum while in the churn‐turbulent regime holdup was proportional to momentum to the one third power.</jats:p><jats:p>Reasons for this behaviour are discussed, as well as the implied effects on liquid mixing in bubble column slurry reactors. The effects of gas density may offer an explanation for some apparently anomalous published results.</jats:p>

収録刊行物

被引用文献 (10)*注記

もっと見る

詳細情報 詳細情報について

問題の指摘

ページトップへ