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NO, reduction, but less effective for NzO reduction; the optimum value of the ratio of primary/ total air was -0.8 for minimizing NO, emissions. Limestone injection at calcium-sulfur molar ratios >2:1 made it possible to remove >90% of SOz formed, although two-stage combustion and decreased concentration of in-bed oxygen brought about a decrease in SOz removal efficiency.
Consequently, using a two-stage combustion scheme, lignite can be burned at fairly low levels of NO,, NzO, and SOz emissions when limestone is added into fluidized-bed combustor.
๐ SIMILAR VOLUMES
The design, construction and testing of a low nitrogen oxide (NO V ), staged combustor to burn low calori"c value gas derived from agricultural wastes is described in this paper. A cyclone combustor was used as the "rst stage combustor. Nitrogen oxide emissions during combustion of low calori"c valu
properties of rice husk should be properly understood for the design of thermochemical conversion systems. This study provides information on moisture content, bulk density, particle size, heating values, proximate analysis, ultimate analysis, ash composition, and ash fusibility characteristics for
15 Environment (pollution, health protection, safety) dilution of the LCV syngas is preliminarily attempted as a NO, reduction technique, and its effects on thermal and fuel NO, production are discussed.