MASS TRANSFER ACROSS AN INTERFACE OF STAGNANT LIQUID LAYER WITH PERIODICAL VORTEX MOTION

JOURNAL OF CHEMICAL ENGINEERING OF JAPAN

AKINORI IWATA¹  KUNIO KATAOKA¹  YASUYUKI OKADA¹  YASUNORI MORIKAWA¹ 

[1] Department of Chemical Engineering, Kobe University

关键词: Mass Transfer Mechanism;    Gas Absorption;    Electrochemical Method;    Periodical Vortex Motion;    Surface Renewal Model;   

DOI  :  10.1252/jcej.20.363

来源: Maruzen Company Ltd

【 摘 要 】

References(18)To reexamine the mechanism of liquid-phase mass transfer across a free interface, absorption of pure oxygen into an aqueous solution of KOH was studied experimentally by making use of an electrolytic reaction of dissolved oxygen: O2+2H2O+4e-→←4OH-. The gas-liquid interface was periodically renewed by an artificially-induced rolling-up vortex motion. It was found that the fractional rate of surface renewal is proportional to the velocity amplitude divided by the wavelength of the periodical vortex motion and that the Sherwood number of liquid-phase mass transfer is in proportion to the square root of the Peclet number.

【 授权许可】

Unknown