Fluid flow and gas absorption in an ejector venturi scrubber
Department of Chemical Engineering, Chemistry and Environmental Science
Doctor of Engineering Science
Trattner, Richard B.
McCormick, John E.
Wong, Wing T.
Gases--Absorption and Adsorption
Empirical models were developed to describe the fluid flow characteristics and gas absorption efficiency of an ejector venturi scrubber. The empirical constants were determined experimentally using stop action photographs of the spray, static pressure measurements, and sulfur dioxide absorption efficiencies.
To take photographs of the spray, a 2 foot high, clear plastic ejector venturi scrubber was used, with a 4 inch diameter gas entrance port. Photographic equipment included a Hasselblad camera, Xenon flash lamp, and Polaroid 667 ASA 3000 film. Exposure duration was about 1 microsecond, resulting in complete stop-action of the spray droplets at liquid rates up to 6 gpm. Droplet size ranged from 34 to 563 microns, with a volume mean diameter of 155 microns, at a liquid rate of 6 gpm.
The sulfur dioxide mass transfer coefficient (Kga) varied from 0.6 to 796 lb-moles/hr-ft3 as the liquid delivery rate was varied from 1 to 8 gpm (i.e. from no atomization to complete atomization).
|Complete Thesis:Download by Chapters:||
njit-etd1986-001 (223 pages ~ 13,590 KB pdf)
Front Matter (Title Page, Abstract, Table of Contents, etc. ~ 15 pages ~ 534 KB pdf)
Chapter I: Introduction (4 pages ~ 216 KB pdf)
Chapter II: Mechanism by which a Liquid Jet, Injected Through a Nozzle into a Chamber of Gas, Breaks up Droplets (11 pages ~ 986 KB pdf)
Chapter III: Drop Size Distribution (21 pages ~ 2,103 KB pdf)
Chapter IV: Photographic Methods for Drop Size Analysis in an Atomizing Spray (10 pages ~ 453 KB pdf)
Chapter V: Fluid Flow in Venturi Scrubbers (19 pages ~ 1,000 KB pdf)
Chapter VI: Gas Absorption in the Ejector Venturi Scrubber (21 pages ~ 986 KB pdf)
Chapter VII: Photographic Experiments (11 pages ~ 533 KB pdf)
Chapter VIII: Proposed Fluid Flow Model for the Ejector Venturi Scrubber (5 pages ~ 218 KB pdf)
Chapter IX: Fluid Flow Experiments (4 pages ~ 160 KB pdf)
Chapter X: Gas Absorption Experiments (4 pages ~ 196 KB pdf)
Chapter XI: Results (11 pages ~ 579 KB pdf)
Chapter XII: Conclusions and Recommendations (4 pages ~ 214 KB pdf)
Nomenclature (8 pages ~ 308 KB pdf)
Appendix A: Derivation of Fluid Flow Model (8 pages ~ 259 KB pdf)
Appendix B: Determination of the Mass Transfer Coefficient (4 pages ~ 124 KB pdf)
Appendix C: Determination of Sulfur Dioxide Concentrations (3 pages ~ 97 KB pdf)
Appendix D: Derivation of Interfacial Area for Gas Absorption (3 pages ~ 94 KB pdf)
Tables (18 pages ~ 800 KB pdf)
Figures (42 pages ~ 3,427 KB pdf)
References (15 pages ~ 953 KB pdf)
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Created August 9, 2001