The pump performance of a small air-lift system for conveying solid particles is investigated experimentally. The total length of the vertical lifting pipe is 3200 mm, and the inner diameter of the pipe is 18 mm. The gas injector is set at a certain point of the pipe. The flows in the lifting pipe are water/solid two-phase mixtures below the gas injection point, and air/water/solid three-phase mixtures above it. The time-averaged characteristics of the flows are examined for various experimental conditions. The effects of particle diameter, particle density, the gas-injection point, and the volume flux of air on the pump performance are studied systematically. The critical boundary at which the particles can be lifted is discussed in detail based upon one-dimensional mixture model.

Issue Section:
Technical Papers
Keywords:
mining, pumps, two-phase flow, air, particle size, transport processes, chemical industry, Air-Lift Pump, Gas/Liquid/Solid Three-Phase Flow, Particle Size, , Gas-Injection Point, Critical Boundary of Transport of Solid Particles
Topics:
Flow (Dynamics), Particulate matter, Pipes, Pumps, Water, Two-phase flow
1.
Giot, M., 1982, Three-phase flow, in Handbook of Multiphase Systems, Edited by Hetsroni, G., McGraw-Hill, New York.
2.
Shaw
,
J. L.
,
1993
, “
Nodule Mining—Three Miles Deep!
,”
Marine Georesources and Geotechnology
,
11
, pp.
181
–
197
.
3.
Weber, M., and Dedegil, M. Y., 1976, “Transport of Solids According to the Air-Lift Principle,” Proceedings of 4th International Conference on the Hydraulic Transport of Solids in Pipes, Alberta, Canada, H1-1-23 and X93-94.
4.
Saito
,
T.
,
Usami
,
T.
,
Yamazaki
,
T.
,
Tomiyama
,
Y.
,
Kiyono
,
F.
, and
Shimizu
,
Y.
,
1991
, “
Analysis of Lifting Characteristics of Manganese Nodules by Air Lift Pump by Means of Dimensionless Parameter (in Japanese)
”
Journal of the Mining and Metallurgical Institute of Japan
,
107
, pp.
265
–
270
.
5.
Kato
,
H.
,
Miyazawa
,
T.
,
Tiyama
,
S.
, and
Iwasaki
,
T.
,
1975
, “
A Study of an Air-Lift Pump for Solid Particles
,”
Bull. JSME
,
18
, pp.
286
–
294
.
6.
Yoshinaga
,
T.
,
Sato
,
Y.
, and
Sadatomi
,
M.
,
1990
, “
Characteristic of Air-Lift Pump for Conveying Solid Particles (in Japanese)
,”
Japanese Journal of Multiphase Flow
,
4
, pp.
174
–
191
.
7.
Yoshinaga
,
T.
, and
Sato
,
Y.
,
1996
, “
Performance of an Air-Lift Pump for Conveying Coarse Particles
”
Int. J. Multiphase Flow
,
22
, pp.
223
–
238
.
8.
Hatta
,
N.
,
Omodaka
,
M.
,
Nakajima
,
F.
,
Takatsu
,
T.
,
Fujimoto
,
H.
, and
Takuda
,
H.
,
1999
, “
Predictable Model for Characteristics of One-dimensional Solid-gas-liquid Three-phase Mixture Flow Along a Vertical Pipeline with an Abrupt Enlargement in Diameter
,”
ASME J. Fluids Eng.
,
121
, pp.
330
–
342
.
9.
Kawashima
,
T.
,
Noda
,
K.
,
Masuyama
,
T.
, and
Oda
,
S.
,
1975
, “
Hydraulic Transport of Solids by Air Lift Pump (in Japanese)
,”
Journal of the Mining and Metallurgical Institute of Japan
,
91
, pp.
765
–
772
.
10.
Govier, G. W., and Aziz, K., 1972, The Complex Mixtures in Pipes, Van Nostrand Reinhold, New York.
11.
Taitel
,
Y.
,
Barnea
,
D.
, and
Dukler
,
A. E.
,
1980
, “
Modeling Flow Pattern Transitions for Steady Upward Gas-Liquid Flow in Vertical Tubes
,”
AIChE J.
,
26
, pp.
345
–
354
.
12.
Weisman
,
J.
, and
Kang
,
S. Y.
,
1981
, “
Flow Pattern Transitions in Vertical and Upwardly Inclined Lines
,”
Int. J. Multiphase Flow
,
7
, pp.
271
–
291
.
13.
Golan, L. P., and Stenning, A. H., 1969, “Two-phase Vertical Flow Maps,” Symposium on Fluid Mechanics and Measurements in Two-Phase Flow Systems, Leeds, England, pp. 108–114.
14.
Ayukawa
,
K.
,
Ochi
,
J.
, and
Niina
,
S.
,
1969
, “
Effects of Pipe Diameter and Liquid Density on Settling Velocity of Solid Particles in a Pipe (in Japanese)
,”
Japanese Journal of Mechanical Engineers Series II
,
35
, pp.
2357
–
2364
.
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