Measurement and scrubbing of SO₂ and NOx from boiler flue gases Public Deposited

http://ir.library.oregonstate.edu/concern/graduate_thesis_or_dissertations/nv9357290

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  • At the Oregon State University heating plant the primary source of heat energy is natural gas with crude oil as the standby supply of fuel. In the future, as natural gas becomes a rarer commodity, more reliance will be placed on the use of the more expensive, more polluting, but also more plentiful supply of low grade fuel oil. The main purpose of this investigation is to resolve the problem of economically and effectively eliminating the polluting characteristics of the flue gases produced by the combustion of the sulfur-rich fuel oils. After consulting the recent literature in the field of air sanitation, an impingement wet scrubber system was constructed and employed in order to determine its capability to remove sulfur dioxide and the nitrogen oxides in the gaseous effluents at the OSU heating plant. The scrubbing slurry was comprised of a mixture of water from the city's water system plus measured amounts of sodium carbonate. Gas samples were analyzed directly from the stack, and then again immediately after passing through the wet scrubber. It was shown that the wet scrubber effectively removed all traces of the 600 ppm sulfur dioxide concentration from the flue gases, and that the 310 ppm oxides of nitrogen value was reduced by 60 to 85%, when fuel oil was burned. When natural gas was fired, the oxides of nitrogen emitted by the scrubber were reduced by 50% from the 150 ppm stack concentration.
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  • description.provenance : Approved for entry into archive by Katy Davis(kdscannerosu@gmail.com) on 2014-01-23T17:17:46Z (GMT) No. of bitstreams: 1 ReichelRolf1974.pdf: 1638046 bytes, checksum: c4818393c95fb7a065fd53c0a2993b54 (MD5)
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