Performance of packed columns VII. The effect of holdup on gas-phase mass transfer rates

AIChE Journal ◽  
1963 ◽  
Vol 9 (4) ◽  
pp. 479-484 ◽  
Author(s):  
H. L. Shulman ◽  
C. G. Savini ◽  
R. V. Edwin
Keyword(s):  
Mass Transfer ◽  
Gas Phase ◽  
Packed Columns ◽  
Transfer Rates

Gas phase mass transfer in packed columns

AIChE Journal ◽  
1973 ◽  
Vol 19 (6) ◽  
pp. 1258-1259
Author(s):  
G. A. Hughmark
Keyword(s):  
Mass Transfer ◽  
Gas Phase ◽  
Packed Columns

Performance of packed columns. II. Wetted and effective-interfacial areas, gas - and liquid-phase mass transfer rates

AIChE Journal ◽  
1955 ◽  
Vol 1 (2) ◽  
pp. 253-258 ◽  
Author(s):  
H. L. Shulman ◽  
C. F. Ullrich ◽  
A. Z. Proulx ◽  
J. O. Zimmerman
Keyword(s):  
Mass Transfer ◽  
Liquid Phase ◽  
Packed Columns ◽  
Liquid Phase Mass Transfer ◽  
Transfer Rates ◽  
Interfacial Areas

Multiphase Flow-Enhanced Corrosion Mechanisms in Horizontal Pipelines

1998 ◽  
Vol 120 (1) ◽  
pp. 67-71 ◽  
Author(s):  
L. Jiang ◽  
M. Gopal
Keyword(s):  
Mass Transfer ◽  
Liquid Phase ◽  
Multiphase Flow ◽  
Gas Phase ◽  
Slug Flow ◽  
Limiting Current ◽  
Transfer Rates ◽  
Limiting Current Density ◽  
Annular Flows ◽  
Corrosion Mechanisms

Previous work has demonstrated the mechanism of enhanced corrosion in slug flow due to entrained pulses of gas bubbles (Gopal et al., 1997). Corrosion rate measurements have been made at pressures up to 0.79 MPa and temperatures up to 90°C, and it has been shown that the effect of these pulses of bubbles increases with pressure and Froude number. This paper describes mass transfer measurements under multiphase slug and annular flows using the limiting current density technique. The experiments are carried out in a 10-cm-dia pipe using a 0.01-M potassium ferro/ferricyanide solution in 1.3 N sodium hydroxide for the liquid phase and nitrogen in the gas phase. Froude numbers of 4, 6, and 9 in slug flow have been studied, while gas velocities up to 10 m/s are investigated in annular flows. The results show instantaneous peaks in the mass transfer rates corresponding to the pulses of bubbles in slug flow. Instantaneous increases of 10–100 times the average values in multiphase flow are seen. Peaks are also seen in instantaneous mass transfer rates in some annular flows.

Sign in / Sign up

Export Citation Format

Share Document