Masters Theses
Date of Award
12-1996
Degree Type
Thesis
Degree Name
Master of Science
Major
Environmental Engineering
Major Professor
Wayne T. Davis
Committee Members
Terry Miller, James Smoot
Abstract
The primary objectives of this study were to characterize and quantify the particle collection efficiency of an ionizing wet scrubber (IWS). The system tested consisted of a cross-flow packed bed pre-scrubber, an ionizer, and a second cross-flow packed bed scrubber in series. The penetration of the system was studied as a function of particle diameter, gas flowrate, and packing media used in the scrubbers. Studies were conducted at gas flowrates of 500, 900 and 1100 ft3/min (specific collector areas of 62.6, 34.8 and 28.5 respectively), for particle diameters ranging from 0.118 - 5.0 microns. Three types of packing were studied. Three equations were developed as a function of specific collector area to describe the behavior of the IWS, which consists of an ionizer and a packed bed in series. The models have the following forms:
IWS: 62.6 SCA (For dp= 0.075 - 3.2μ: da=0.12 - 5.0μ)
Pt(62.6)IWS= exp [- (-0.48 dp2 + 3.07 dp + 2.02)]
X [0.006199 da3 - 0.060103 da2 + 0.011302 da + 0.77037](L/8)
IWS: 34.8 SCA (For dp= 0.075 - 3.2μ: da=0.12 - 5.0μ)
Pt(34.8)IWS = exp [- (-0.43 dp2 + 2.60 dp + 1.20)]
X [0.006199 da3 - 0.060103 da2 + 0.011302 da + 0.77037](L/8)
IWS: 28.5 SCA (For dp= 0.075 - 3.2μ: da=0.12 - 5.0μ)
Pt(28.5)IWS = exp [- (-0-66 dp2 + 2.93 dp + 0.74)]
X [0.006199 da3 - 0.060103 da2 + 0.011302 da + 0.77037](L/8) where Pt is the fractional penetration, dp is the physical diameter of the particle in microns, da is the aerodynamic diameter of the particle in microns, and L is the depth of wetted packing in the direction of gas flow in feet.
Recommended Citation
Morse, Thomas C., "Characterization of particle collection efficiency in an ionizing wet scrubber. " Master's Thesis, University of Tennessee, 1996.
https://trace.tennessee.edu/utk_gradthes/10917