[1] Duan Yuanqiang, Duan Lunbo, Hu Haihua, Zhao Changsui, et al. Combustion and pollutant emission characteristics of coalin a pressurized fluidized bed under O2/CO2 atmosphere [J]. Journal of Southeast University (English Edition), 2015, 31 (2): 188-193. [doi:10.3969/j.issn.1003-7985.2015.02.005]
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Combustion and pollutant emission characteristics of coalin a pressurized fluidized bed under O2/CO2 atmosphere(
)
煤在增压流化床O2/CO2气氛下的燃烧及污染物排放特性
)Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]
- Volumn:
- 31
- Issue:
- 2015 2
- Page:
- 188-193
- Research Field:
- Energy and Power Engineering
- Publishing date:
- 2015-06-20
Info
- Title:
- Combustion and pollutant emission characteristics of coalin a pressurized fluidized bed under O2/CO2 atmosphere
- 煤在增压流化床O2/CO2气氛下的燃烧及污染物排放特性
- Author(s):
- Duan Yuanqiang1; Duan Lunbo1; Hu Haihua1; 2; Zhao Changsui1
-
1School of Energy and Environment, Southeast University, Nanjing 210096, China
2Jiangxi Electric Power Design Institute, Nanchang 330096, China
- PACS:
- TK16
- DOI:
- 10.3969/j.issn.1003-7985.2015.02.005
- Abstract:
- The pressurized combustion experiments of bituminous coal and lignite under air and O2/CO2 atmospheres were conducted to study the influences of pressure and atmosphere on combustion and the CO, NO, SO2 release process. Two indices, the maximum concentration and the total emission, were applied to quantitatively evaluate the influence of several different operating parameters such as pressure, atmosphere and temperature on the formation of NO and SO2 during coal combustion in the fluidized bed. The experimental results show that the releasing profiles of CO, NO and SO2 during coal combustion under a pressurized oxy-fuel atmosphere are similar to those under a pressurized air atmosphere, and the curves of measured gas components are all unimodal. Under the oxy-fuel condition, pressure increasing from 0.1 to 0.7 MPa can cause the inhibition of NO and SO2 emission. The elevation of temperature can lead to an increase in the maximum concentration and the total production of NO and SO2, and the increase under atmospheric pressure is higher than that under high pressure.
- 在空气和O2/CO2气氛下进行烟煤和褐煤的燃烧实验以考察压力和气氛对煤燃烧以及CO, NO, SO2析出过程的影响.采用排放峰值与排放总量2个指标来评估压力、气氛和温度等操作参数对煤在增压流化床富氧燃烧过程中NO及SO2生成的影响.结果表明:煤在增压富氧燃烧时CO, NO和SO2析出规律和增压空气燃烧时的规律相似, 各组分气体均呈现单峰析出;O2/CO2气氛下, 压力从0.1 MPa提高到0.7 MPa会抑制NO和SO2生成;随着温度的升高, NO和SO2的排放峰值和总量均增大, 常压时两者增加的幅度要高于加压时.
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Memo
- Memo:
-
Biographies: Duan Yuanqiang(1990—), male, graduate; Duan Lunbo(corresponding author), male, doctor, associate professor, duanlunbo@seu.edu.cn.
Foundation items: The National Natural Science Foundation of China(No.51206023), the National Key Basic Research Program of China(973 Program)(No.2011CB707301-3), the Fundamental Research Funds for the Central Universities.
Citation: Duan Yuanqiang, Duan Lunbo, Hu Haihua, et al. Combustion and pollutant emission characteristics of coal in a pressurized fluidized bed under O2/CO2 atmosphere[J].Journal of Southeast University(English Edition), 2015, 31(2):188-193.[doi:10.3969/j.issn.1003-7985.2015.02.005]