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
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54 ENVIRONMENTAL SCIENCES
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CARBONATES
CHALCOGENIDES
COLLOIDS
COMBUSTION PRODUCTS
DESIGN
DISPERSIONS
ELECTROSTATICS
EQUIPMENT
FUNCTIONAL MODELS
INDUSTRIAL WASTES
OXIDES
OXYGEN COMPOUNDS
PARTICLES
PERFORMANCE TESTING
PILOT PLANTS
POLLUTION
POLLUTION CONTROL EQUIPMENT
SCRUBBERS
SODIUM CARBONATES
SODIUM COMPOUNDS
SOLS
SULFUR COMPOUNDS
SULFUR DIOXIDE
SULFUR OXIDES
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WASTES