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Experimental investigation into pulverized-coal combustion performance and NO formation using sub-stoichiometric ratios

Chen, Zhichao; Wang, Zhenwang; Li, Zhengqi; Xie, Yiquan; … - In: Energy 73 (2014) C, pp. 844-855

The influence of using sub-stoichiometric ratios on pulverized-coal combustion and NO formation and reduction in a pulverized-coal combustion test system with a swirl burner was investigated. Local gas components, gas temperature, the char burnout rate, and carbon and nitrogen release rates were...

Persistent link: https://www.econbiz.de/10011054151

Large eddy simulation of a two-phase reacting swirl flow inside a cement cyclone

Mikulčić, Hrvoje; Vujanović, Milan; Ashhab, Moh'd Sami; … - In: Energy 75 (2014) C, pp. 89-96

fluid dynamics – CFD simulation for continuum fluid flow and heat exchange was used for the investigation. The Eulearian … process, has been developed and implemented within the commercial finite volume CFD code FIRE. Due to the fact that the … scroll type cyclone was used for the CFD simulation. The gained numerical results, characteristic for cyclones, such as the …

Persistent link: https://www.econbiz.de/10011054882

Effect of H2O on the combustion characteristics of pulverized coal in O2/CO2 atmosphere

Yi, Baojun; Zhang, Liqi; Huang, Fang; Mao, Zhihui; … - In: Applied Energy 132 (2014) C, pp. 349-357

The H2O concentration in real oxy-fuel combustion atmospheres is significantly higher than that in conventional air combustion, which strongly affects the combustion characteristics of pulverized coal. This study studies the effect of H2O on pulverized coal combustion behaviour in O2/CO2...

Persistent link: https://www.econbiz.de/10010930647

Power generation from pulverized coal in China

Yang, Yongping; Guo, Xiyan; Wang, Ningling - In: Energy 35 (2010) 11, pp. 4336-4348

The growth of power generation in China since the 1980s has been reviewed by analyzing the relationship between demand and supply of power, the increasing in installed capacity, and the variations in power-resource structure. Currently, the power generation from pulverized coal (PC) is dominant...

Persistent link: https://www.econbiz.de/10010809417

Influence of forward scattering on prediction of temperature and radiation fields inside the pulverized coal furnace

Crnomarkovic, Nenad; Sijercic, Miroslav; Belosevic, Srdjan - In: Energy 45 (2012) 1, pp. 160-168

A possibility of simplification of the scattering phase function of a pulverized coal flame was analyzed in the paper. It was showed that the type of radiation scattering of a pulverized coal flame is between two limiting cases: isotropic and forward scattering. A comprehensive mathematical...

Persistent link: https://www.econbiz.de/10010810913

Kinetic characteristics of pulverized coal combustion in the two-phase flow

Li, Zhengang; Guo, Zhancheng; Gong, Xuzhong; Tang, Huiqing - In: Energy 55 (2013) C, pp. 585-593

The kinetic characteristics of pulverized coal combustion in the two-phase flow were studied using the micro fluidized bed kinetic analyzer (MFBKA) so as to get closer to the actual working condition. On the basis of the performance of CO and CO2 emissions, the effect of various operating...

Persistent link: https://www.econbiz.de/10011054572

Effect of oxy-fuel combustion with steam addition on coal ignition and burnout in an entrained flow reactor

Riaza, J.; Álvarez, L.; Gil, M.V.; Pevida, C.; Pis, J.J.; … - In: Energy 36 (2011) 8, pp. 5314-5319

The ignition temperature and burnout of a semi-anthracite and a high-volatile bituminous coal were studied under oxy-fuel combustion conditions in an entrained flow reactor (EFR). The results obtained under oxy-fuel atmospheres (21%O2–79%CO2, 30%O2–70% O2 and 35%O2–65%CO2) were compared...

Persistent link: https://www.econbiz.de/10011055673

Artificial neural network prediction of exhaust emissions and flame temperature in LPG (liquefied petroleum gas) fueled low swirl burner

Adewole, Bamiji Z.; Abidakun, Olatunde A.; Asere, Abraham A. - In: Energy 61 (2013) C, pp. 606-611

This study deals with ANN (artificial neural network) modeling of a swirl burner. The model was used to predict the flame temperature and pollutant emissions (CO (carbon monoxide) and NOx (nitrogen oxide)) from combustion of LPG (liquefied petroleum gas) in the swirl burner. The data for the...

Persistent link: https://www.econbiz.de/10011053493

Influence of the outer secondary air vane angle on the gas/particle flow characteristics near the double swirl flow burner region

Jing, Jianping; Li, Zhengqi; Zhu, Qunyi; Chen, Zhichao; … - In: Energy 36 (2011) 1, pp. 258-267

A three-component particle-dynamics anemometer is used to measure, in the near-burner region, the influence of the outer secondary air vane angle on the gas/particle flow characteristics of a double swirl flow burner, in conjunction with a gas/particle two-phase test facility. Velocities,...

Persistent link: https://www.econbiz.de/10011055069

Influence of primary air ratio on flow and combustion characteristics and NOx emissions of a new swirl coal burner

Jing, Jianping; Li, Zhengqi; Zhu, Qunyi; Chen, Zhichao; … - In: Energy 36 (2011) 2, pp. 1206-1213

Cold airflow experiments on a small-scale burner model, as well as in situ experiments on a centrally fuel-rich swirl coal combustion burner were conducted. Measurements were taken from within a 300 MWe wall-fired pulverized-coal utility boiler installed with eight of centrally fuel-rich swirl...

Persistent link: https://www.econbiz.de/10011055109