The Latest Frontiers of Bubble Columns and Slurry Bubble Columns. Gas Holdup and Bubble Behaviour in a Pressurized Bubble Column.

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  • Ishiyama Hiroshi
    Department of Applied Chemistry, Kanagawa Institute of Technology
  • Kaneoka Haruki
    Department of Applied Chemistry, Kanagawa Institute of Technology
  • Sawai Jun
    Department of Applied Chemistry, Kanagawa Institute of Technology
  • Kojima Hiromitsu
    Department of Applied Chemistry, Kanagawa Institute of Technology

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Other Title
  • 気泡塔・懸濁気泡塔最前線　　加圧気泡塔のガスホールドアップおよび気泡の挙動
  • 加圧気泡塔のガスホールドアップおよび気泡の挙動
  • カアツ キホウトウ ノ ガスホールドアップ オヨビ キホウ ノ キョドウ

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The effect of pressure on gas holdup was investigated experimentally with gas-liquid systems, of nitrogen-water, and carbon dioxide-water, in a bubble column with diameter of 45 mm. Single nozzles of 1.4, and 4.0 mm in diameter were used as gas disperser. When the 4.0 mm nozzle was used, no effect of pressure on gas holdup was observed. When single nozzle of 1.4 mm with nitrogen as the gas phase, gas holdup increased with pressure. But when carbon dioxide was used as the gas phase, gas holdupshowed a maximum at pressure of 0.6 MPa. The gas holdup at 1.1 MPa was approximately the samevalue as that at atmospheric pressure. To explain these phenomena by the behavior of bubbles in thecolumn, bubble size near the wall and bubble frequency at the center of column were measured.

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