Skip to main content
U.S. Department of Energy
Office of Scientific and Technical Information

University of Washington electrostatic scrubber tests: combined particulate and SO/sub 2/ control. Final report Jun 78-Aug 79

Technical Report ·
OSTI ID:6686733
The report gives results of tests of a 1700 a cu m/hr University of Washington electrostatic spray scrubber pilot plant on a coal-fired boiler to demonstrate its effectiveness for controlling fine particle and SO2 emissions. The multiple-pass portable pilot plant operates by combining oppositely charged aerosol particles and water droplets in two spray towers. Aerosol charging sections at a negative polarity precede each spray tower. For these tests, the pilot plant used only one charging section and one spray tower. A liquor recycle system was constructed, permitting the pilot plant to operate in an open- or closed-loop mode. All SO2 tests were run in an open-loop mode using either water or Na2CO3 solution as the scrubbing liquor. Simultaneous inlet and outlet source tests using cascade impactors provided size-dependent and overall mass basis particle collection efficiency data. Measured over-all particle collection efficiencies were 98.99%-99.80%, depending on scrubbing operating conditions. SO2 collection efficiencies were 8.02%-97.41%, depending on the scrubber operating conditions, inlet SO2 concentration, and the type of scrubbing liquor used.
Research Organization:
Washington Univ., Seattle (USA). Dept. of Civil Engineering
OSTI ID:
6686733
Report Number(s):
PB-80-182603
Country of Publication:
United States
Language:
English