NOx emission and thermal efficiency of a 300MWe utility boiler retrofitted by air staging

Li, Sen; Xu, Tongmo; Suo, Hui; Wei, Xiaolin

doi:10.1016/j.apenergy.2008.12.032

Cited by 119 publications

(46 citation statements)

References 10 publications

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“…Higher CO emissions, as expected, have been recorded when co-firing coal TET5 with 15%wt of biomass as compared to 5% co-firing, see Figure 4b. This co-relates also with a bit lower NO x emissions in case of 15% co-firing, as shown in Figure 4a, which is phenomenon of NO x and CO correlation also reported by Wang [19], Li [20] and Rozendal [21]. During all co-firing test runs, lower NO x emissions were measured at the lower process temperatures, at the air staging and reburning, that is also reported in [20][21][22].…”

Section: Emissionssupporting

confidence: 83%

“…This co-relates also with a bit lower NOx emissions in case of 15% co-firing, as shown in Figure 4a, which is phenomenon of NOx and CO correlation also reported by Wang [19], Li [20] and Rozendal [21]. During all co-firing test runs, lower NOx emissions were measured at the lower process temperatures, at the air staging and reburning, that is also reported in [20][21][22]. Despite of general decrease of NOx emissions recorded at higher biomass co-firing ratio, it was not, however, possible to identify clearly the correlation between the biomass content in the co-firing blend and NOx emissions during the tests.…”

Section: Emissionssupporting

confidence: 82%

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Co-Combustion of Low-Rank Coal with Woody Biomass and Miscanthus: An Experimental Study

2018

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This paper presents a research on ash-related problems and emissions during co-firing low-rank Bosnian coals with different kinds of biomass; in this case woody sawdust and herbaceous energy crops Miscanthus. An entrained-flow drop tube furnace was used for the tests, varying fuel portions at a high co-firing ratio up to 30%wt woody sawdust and 10%wt Miscanthus in a fuel blend. The tests were supposed to optimize the process temperature, air distribution (including OFA) and fuel distributions (reburning) as function of SO 2 and NO x emissions as well as efficiency of combustion process estimated through the ash deposits behaviors, CO emissions and unburnt. The results for 12 co-firing fuel combinations impose a reasonable expectation that the coal/biomass/Miscanthus blends could be successfully run under certain conditions not producing any serious ash-related problems. SO 2 emissions were slightly higher when higher content of woody biomass was used. Oppositely, higher Miscanthus percentage in the fuel mix slightly decreases SO 2 emissions. NO x emissions generally decrease with an increase of biomass co-firing rate. The study suggests that co-firing Bosnian coals with woody sawdust and Miscanthus shows promise at higher co-firing ratios for pulverized combustion, giving some directions for further works in co-firing similar multi-fuel combinations.

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Section: Emissionssupporting

confidence: 83%

Section: Emissionssupporting

confidence: 82%

Co-Combustion of Low-Rank Coal with Woody Biomass and Miscanthus: An Experimental Study

2018

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“…Li et al measured for the same parameters in a 300-MW e wall-fired pulverized coal utility boiler [9]. Experiments have been performed using pulverized coal, tangentially fired, and wallfired boilers [10][11][12][13][14][15][16][17][18]. However, the combustion characteristics of lignite utility boilers need further research.…”

Section: Introductionmentioning

confidence: 99%

Measurement of gas species, temperatures, char burnout, and wall heat fluxes in a 200-MWe lignite-fired boiler at different loads

Li¹,

Jing²,

Liu³

et al. 2010

Applied Energy

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“…Such research papers study the problem of reducing the concentration of the hazardous substances [1,2] and increasing equipment efficiency [3][4][5]. One important aspect of industrial impact on the environment is the air dispersion of produced hazardous substances using chimney stacks, which enables lower their ground-level concentration.…”

Section: Introductionmentioning

confidence: 99%

Research of the Influence of Flue Gas Parameter Changes on Air Dispersion Processes of Hazardous Substances

Ionkin¹,

Рагуткин²,

Roslyakov³

et al. 2016

DAAAM Proceedings

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The article describes a promising technology of flue gas heat recovery for natural gas-powered boilers and presents the result of calculating air dispersion of hazardous emissions from chimney stacks on specific power plants. Following power plants were chosen for computational research: MPEI CHPP (Moscow) and peak-backup power plant PRK (Tomsk). The paper concludes that prior to the installation of condenser units preliminary computation of hazardous emissions dispersion is needed.

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NOx emission and thermal efficiency of a 300MWe utility boiler retrofitted by air staging

Cited by 119 publications

References 10 publications

Co-Combustion of Low-Rank Coal with Woody Biomass and Miscanthus: An Experimental Study

Co-Combustion of Low-Rank Coal with Woody Biomass and Miscanthus: An Experimental Study

Measurement of gas species, temperatures, char burnout, and wall heat fluxes in a 200-MWe lignite-fired boiler at different loads

Research of the Influence of Flue Gas Parameter Changes on Air Dispersion Processes of Hazardous Substances

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