Gas Absorption in Mechanically Agitated Gas-Liquid Contactors with a Large Ring Sparger and a Downflow Pitched Blade Turbine

DOI Web Site Web Site 5 Citations 14 References
  • Ohmori Hiroshi
    Department of Industrial Chemistry, Tokyo University of Science
  • Ishii Yasuyuki
    Department of Industrial Chemistry, Tokyo University of Science
  • Shono Atushi
    Department of Industrial Chemistry, Tokyo University of Science
  • Satoh Kazumi
    Department of Industrial Chemistry, Tokyo University of Science

Bibliographic Information

Other Title
  • 大型リングスパージャーと下向流型傾斜タービン翼を用いる撹はん槽型気液接触装置のガス吸収特性
  • 大型リングスパージャーと下向流型傾斜タービン翼を用いる撹拌槽型気液接触装置のガス吸収特性
  • オオガタ リングスパージャー ト カコウリュウガタ ケイシャ タービンヨク オ モチイル カクハンソウガタキエキ セッショク ソウチ ノ ガス キュウシュウ トクセイ

Search this article

Description

A new type of mechanically agitated gas-liquid contactor is proposed. In this contactor, bubble breakup is assigned to a sparger with larger ring diameter than impeller diameter, and circulation of gas-liquid mixture to an axial impeller with high discharge performance.<br>The performance was evaluated by measuring the rate of oxygen absorption into tap water and CMC aqueous solutions (viscosity 10–70 mPa·s), the gas holdup and the power consumption in comparison with the conventional type.<br>The new type of contactor prevents the concentration of aeration gas around the impeller and the formation of stable cavities in viscous liquid, resulting in the efficient discharge of gas-liquid mixture from the impeller. As a result, the performance of gas absorption, especially into viscous liquids, was improved. The relative contribution of aeration power to KLa became larger than that of agitation power in contrast to the conventional type. KLa increased with decreasing diameter of the sparger holes under the same superficial gas velocity, but no effects of the number of sparger holes were found.

Journal

Citations (5)*help

See more

References(14)*help

See more

Keywords

Details 詳細情報について

Report a problem

Back to top