scholarly journals Reasons analysis of the large deviation in the NOx emission data of the coal-fired power plant

2021 ◽  
Vol 675 (1) ◽  
pp. 012030
Author(s):  
Ruifeng Dong ◽  
Kai Zhang ◽  
Yang Guo
Keyword(s):  
Power Plant ◽  
Large Deviation ◽  
Nox Emission ◽  
Emission Data

scholarly journals Growth in NOx emissions from power plants in China: bottom-up estimates and satellite observations

2012 ◽  
Vol 12 (10) ◽  
pp. 4429-4447 ◽  
Author(s):  
S. W. Wang ◽  
Q. Zhang ◽  
D. G. Streets ◽  
K. B. He ◽  
R. V. Martin ◽  
...  
Keyword(s):  
Power Plant ◽  
Power Plants ◽  
Emission Inventory ◽  
Transport Model ◽  
Nox Emission ◽  
Nox Emissions ◽  
Large Power ◽  
Power Plant Emissions ◽  
Tropospheric No2 ◽  
Plant Emissions

Abstract. Using OMI (Ozone Monitoring Instrument) tropospheric NO2 columns and a nested-grid 3-D global chemical transport model (GEOS-Chem), we investigated the growth in NOx emissions from coal-fired power plants and their contributions to the growth in NO2 columns in 2005–2007 in China. We first developed a unit-based power plant NOx emission inventory for 2005–2007 to support this investigation. The total capacities of coal-fired power generation have increased by 48.8% in 2005–2007, with 92.2% of the total capacity additions coming from generator units with size ≥300 MW. The annual NOx emissions from coal-fired power plants were estimated to be 8.11 Tg NO2 for 2005 and 9.58 Tg NO2 for 2007, respectively. The modeled summer average tropospheric NO2 columns were highly correlated (R2 = 0.79–0.82) with OMI measurements over grids dominated by power plant emissions, with only 7–14% low bias, lending support to the high accuracy of the unit-based power plant NOx emission inventory. The ratios of OMI-derived annual and summer average tropospheric NO2 columns between 2007 and 2005 indicated that most of the grids with significant NO2 increases were related to power plant construction activities. OMI had the capability to trace the changes of NOx emissions from individual large power plants in cases where there is less interference from other NOx sources. Scenario runs from GEOS-Chem model suggested that the new power plants contributed 18.5% and 10% to the annual average NO2 columns in 2007 in Inner Mongolia and North China, respectively. The massive new power plant NOx emissions significantly changed the local NO2 profiles, especially in less polluted areas. A sensitivity study found that changes of NO2 shape factors due to including new power plant emissions increased the summer average OMI tropospheric NO2 columns by 3.8–17.2% for six selected locations, indicating that the updated emission information could help to improve the satellite retrievals.

Prediction of NOx Emission from Coal Fired Power Plant Based on Real-Time Model Updates and Output Bias Update

2015 ◽  
Vol 48 (1) ◽  
pp. 35-43 ◽  
Author(s):  
Faisal Ahmed ◽  
Hyun Jun Cho ◽  
Jin-Kuk Kim ◽  
Nohuk Seong ◽  
Yeong-Koo Yeo
Keyword(s):  
Power Plant ◽  
Real Time ◽  
Nox Emission ◽  
Time Model

Low NOx Combustion Technologies for Power Plant

2012 ◽  
Vol 518-523 ◽  
pp. 2151-2154
Author(s):  
Yan Chao Li ◽  
Fang Qin Li ◽  
Zhi Wu Hao
Keyword(s):  
Power Plant ◽  
Nox Emission ◽  
Power Plant Boiler ◽  
Low Nox Combustion ◽  
Nox Control ◽  
Plant Boiler ◽  
At Home

The paper introduce the main measures to reduce NOx emission in boiler combustion progress, the principles of several low NOx combustion technologies at home and abroad and the application in power plant boiler. Analysis are made to these traditional measures of their limitations. The development of NOx control in combustion progress and the prospect forecast of low NOx combustion technologies is also discussed.

Research on Continuous Emission Monitoring System in Thermal Power Plant

2013 ◽  
Vol 427-429 ◽  
pp. 1117-1120 ◽  
Author(s):  
Bing Shi ◽  
Zheng Hua Ma ◽  
Jian Ming Jiang ◽  
Suo Lin Duan
Keyword(s):  
Power Plant ◽  
Real Time ◽  
Monitoring System ◽  
Thermal Power ◽  
Continuous Emission ◽  
Emission Data ◽  
Emission Monitoring ◽  
And Control ◽  
Profibus Dp ◽  
Continuous Emission Monitoring

The system aims to collect reliable emission data in real time, provide the operator with real-time emission parameters, and guide the optimization of unit operation and control of pollutants in flue gas emissions. One kind of continuous emission monitoring system is designed based on PROFIBUS-DP protocol in power plant, the architecture of system is presented and the principle is described in detail.

A MLP Prediction Model for Power Plant NOx Emission

2000 ◽  
Vol 33 (6) ◽  
pp. 117-122 ◽  
Author(s):  
S. Thompson ◽  
K. Li
Keyword(s):  
Power Plant ◽  
Prediction Model ◽  
Nox Emission

PAHs Emission Characteristics and Assessment from the Coal Combustion Process in the Large Capacity Power Plant Boilers

2013 ◽  
Vol 726-731 ◽  
pp. 1908-1916 ◽  
Author(s):  
Xue Feng Yin ◽  
Wen Ting Yang ◽  
Hui Min Xue
Keyword(s):  
Power Plant ◽  
Coal Combustion ◽  
Electrostatic Precipitator ◽  
Combustion Process ◽  
Ambient Air ◽  
Emission Characteristic ◽  
Air Pollution Control ◽  
Environment Impact ◽  
Emission Data ◽  
Large Capacity

Many studies have demonstrated an association between exposure to ambient Polycyclic Aromatic Hydrocarbons (PAHs) and some serious diseases, such as cancer, malformation and mutation. PAHs is thought as a carcinogenic and mutagenic compound to human health. Coal-fired power plant industry plays an important role in the observed PAHs emission process. However, the PAHs emission characteristic and environment impact in coal-fired power plant is still not fully clarified. In this study, the PAHs distribution characteristic of the flue gas and fly ash emitted from electrostatic precipitator in two coal-fired power plant boilers with the steam capacity 1000t/h and 2000t/h have been studied in China based on USEPA method 0023(sampling part). PAHs concentrations and PAHs emission factors were determined. And the correlation between PAHs emission and the steam capacity of the power plant boiler was discussed. In addition, the PAHs removal effects of air pollution control devices were also included. According to the measured PAHs emission data and the report of China statistical year book, the PAHs emission assessment from the coal combustion process in the large capacity co-fired power plant boilers have been done. Though the PAHs emission value in the large capacity power plant were present within recommended emission limits of energy production, the problem of PAHs emission in large capacity coal-fired power plant shouldnt be ignored due to the huge amounts and long-range transport in soil, water and ambient air.

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