Formation and Decomposition of Nitrous Oxide from a Circulating Fluidized-Bed Coal Combustor.

Hirama, Toshimasa; Hosoda, Hideo; Moritomi, Hiroshi; Suzuki, Yoshishige; Harada, Michiaki; Shimizu, Tadaaki

doi:10.3775/jie.72.252

Cited by 3 publications

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“…Iron-containing solids into fluidised bed combustors were known to increase the emissions of NO x during coal combustion (Hirama et al, 1993). nitrogen oxides (NO x ), sulphur dioxide (SO 2 ), particulate matter and heavy metals.…”

Section: Experimental Investigation On No X Emission Characteristics mentioning

confidence: 99%

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Experimental investigation on NO_x emission characteristics of a new solid fuel made from sewage sludge mixed with coal in combustion

et al. 2015

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In this article, a new briquette fuel (SC), which was produced by the mixture of coal fines (25.9%), sewage sludge (60.6%), lignin (4.5%), tannic acid (4.5%) and elemental silicon (4.5%), was provided. Then, in a high temperature electric resistance tubular furnace, the total emissions of NO2 and NO, effects of combustion temperature, air flow rate and heating rate on NOx (NO, NO2) emissions of SC were studied during the combustion of SC; furthermore, effects of additives on hardness were also analysed, and the X-ray photoelectron spectroscopy was applied to investigate the reduced NOx emission mechanism. The research results showed that, compared with the characteristics of briquette fuel (SC0) produced only by the mixture of coal and sewage sludge (the ratio of coal to sewage sludge was the same as that of SC), the Meyer hardness of SC was 12.6% higher than that of SC0 and the emissions of NOx were 27.83% less than that of SC0 under the same combustion conditions. The NOx emissions of SC decreased with the adding of heating rate and increased with the rise of air flow rate. When the temperature was below 1000 °C, the emissions of NOx increased with the elevated temperature, however, further temperature extension will result in a decreasing in emissions of NOx. Furthermore, the X-ray photoelectron spectroscopy results proposed that the possible mechanism for the reduction of NOx emissions was nitrogen and silicon in SC to form the compounds of silicon and nitrogen at high temperatures.

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Section: Experimental Investigation On No X Emission Characteristics mentioning

confidence: 99%

“…nitrogen oxides (NO x ), sulphur dioxide (SO 2 ), particulate matter and heavy metals. Iron-containing solids into fluidised bed combustors were known to increase the emissions of NO x during coal combustion (Hirama et al, 1993). When ferric salt coagulants are utilised for sewage treatment, the sludge will contain iron.…”

Section: Introductionmentioning

confidence: 99%

Experimental investigation on NO_x emission characteristics of a new solid fuel made from sewage sludge mixed with coal in combustion

et al. 2015

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Emissions of NOx and N2O during co-combustion of dried sewage sludge with coal in a bubbling fluidized bed combustor

Shimizu

Toyono

Ohsawa

2007

Fuel

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Simultaneous Reduction of Nox, N2O, SO2 Emissions from a Fluidized Bed Coal Combustor Using Alternative Bed Material.

Shimizu

Asazuma

Shinkai

et al. 2003

J. Chem. Eng. Japan

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Formation and Decomposition of Nitrous Oxide from a Circulating Fluidized-Bed Coal Combustor.

Cited by 3 publications

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Experimental investigation on NO_x emission characteristics of a new solid fuel made from sewage sludge mixed with coal in combustion

Experimental investigation on NO_x emission characteristics of a new solid fuel made from sewage sludge mixed with coal in combustion

Emissions of NOx and N2O during co-combustion of dried sewage sludge with coal in a bubbling fluidized bed combustor

Simultaneous Reduction of Nox, N2O, SO2 Emissions from a Fluidized Bed Coal Combustor Using Alternative Bed Material.

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Formation and Decomposition of Nitrous Oxide from a Circulating Fluidized-Bed Coal Combustor.

Cited by 3 publications

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Experimental investigation on NOx emission characteristics of a new solid fuel made from sewage sludge mixed with coal in combustion

Experimental investigation on NOx emission characteristics of a new solid fuel made from sewage sludge mixed with coal in combustion

Emissions of NOx and N2O during co-combustion of dried sewage sludge with coal in a bubbling fluidized bed combustor

Simultaneous Reduction of Nox, N2O, SO2 Emissions from a Fluidized Bed Coal Combustor Using Alternative Bed Material.

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Experimental investigation on NO_x emission characteristics of a new solid fuel made from sewage sludge mixed with coal in combustion

Experimental investigation on NO_x emission characteristics of a new solid fuel made from sewage sludge mixed with coal in combustion