Gas-borne liquid flow rate in a venturi scrubber with two different liquid injection arrangements

Experiments were conducted to measure Q sub(L) at various locations in a venturi scrubber. Water was injected in two ways: (1) radially inward through a circumferential slot at the throat inlet, and (2) axially downward through a centered pipe at the converging section inlet. For each liquid injecti...

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Bibliographic Details
Published in:Aerosol science and technology 1987, Vol.7 (1), p.15-29
Main Authors: KOEHLER, J. L. M, FELDMAN, H. A, LEITH, D
Format: Article
Language:English
Subjects:
Applied sciences
Chemical engineering
Crystallization, leaching, miscellaneous separations
Exact sciences and technology
Online Access:Get full text
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Summary:Experiments were conducted to measure Q sub(L) at various locations in a venturi scrubber. Water was injected in two ways: (1) radially inward through a circumferential slot at the throat inlet, and (2) axially downward through a centered pipe at the converging section inlet. For each liquid injection arrangement, Q sub(L) was determined by measuring the water in the gas at 180 points in the venturi, under each of nine operating conditions defined by varying liquid-to-gas ratio and gas velocity in the throat. For radial injection, relatively little injected water was found to be gas borne throughout the scrubber, whereas for axial injection, most of all injected water remained in the gas. For both liquid injection arrangements, the radial distribution of gas-borne liquid varied consistently with axial position; under every operating condition, the concentration of gas-borne liquid in the throat was highest near the injection point, whereas by the end of the diverging section, it was highest near the centerline. A mathematical model is proposed to explain the observed axial variation in gas-borne liquid flow rate.
ISSN:0278-6826
1521-7388