LIQUID CIRCULATION, GAS HOLDUP AND PRESSURE DROP IN BUBBLE COLUMN WITH DRAUGHT TUBE

JOURNAL OF CHEMICAL ENGINEERING OF JAPAN

ETSUO TAKAHASHI²  YUKITOSHI TAKASAKA²  HIROSHI KUBOTA¹  SHINJI MATSUURA²  KOZO KOIDE²  SHINJI IWAMOTO²  MOTOHIKO KIMURA² 

[1] Research Laboratory of Resources Utilization, Tokyo Institute of Technology;Department of Chemical Engineering, Shizuoka University

关键词: Fluid Mechanics;    Bubble Column;    Draught Tube;    Circulating Liquid Flow;    Gas Holdup;    Chemical Reactor;   

DOI  :  10.1252/jcej.17.611

来源: Maruzen Company Ltd

【 摘 要 】

References(15)Cited-By(44)The effects of gas velocity and geometrical dimensions of apparatus on the flow rate QL of circulating liquid, gas holdups and pressure drops in bubble columns with draught tube were examined. It was found that QL increases with increasing gas velocity, column diameter, draught tube length, and height of the lower end of draught tube, and decreases with increasing liquid viscosity. It was also found that the maximum value of QL is observed for constant values of gas velocity and column diameter, when the diameter ratio of draught tube and column is about 0.6. Empirical equations for gas holdups in draught tube and annulus and the pressure drops due to flow reversals, necessary for estimating QL, are proposed.

【 授权许可】

Unknown