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NO reduction in a fluidized bed combustor with primary measures and selective non-catalytic reduction a screening study using statistical experimental designs
Umeå university.
Umeå universitet.
1995 (English)In: Fuel, ISSN 0016-2361, E-ISSN 1873-7153, Vol. 74, no 1, p. 128-135Article in journal (Refereed) Published
Abstract [en]

Screening experiments were carried out to study the reduction of NO emissions from a 20 MW circulating fluidized bed (CFB) boiler, equipped with an installation for selective non-catalytic reduction (SNR). The influence of both primary measures and SNR were evaluated, using 25-1 and 25-2 fractional factorial designs for the two fuels, crushed peat and wood waste, respectively. Polynomial models were deducted from statistical analysis of the experiments, and a good agreement between models and measured data was obtained. The evaluation showed that, by using a designed experimental procedure, CFB operating conditions yielding an NO reduction of 60-80% could be identified, with both primary measures and the SNR being of approximately equal importance. Most important factors for the NO reduction were air:fuel ratio, the amount of NH3 added, the load and the fraction of lower secondary air; but the reduction is also influenced by small interaction effects. A discussion of the use of experimental designs for increased understanding and optimization of combustion processes is also given.

Place, publisher, year, edition, pages
1995. Vol. 74, no 1, p. 128-135
National Category
Energy Engineering
Research subject
Energy Engineering
Identifiers
URN: urn:nbn:se:ltu:diva-5857DOI: 10.1016/0016-2361(94)P4344-2Local ID: 40c8e4d0-4b40-11dc-ac5f-000ea68e967bOAI: oai:DiVA.org:ltu-5857DiVA, id: diva2:978733
Note
Upprättat; 1995; 20070815 (ysko)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2017-11-24Bibliographically approved

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Öhman, Marcus

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