Modeling of the submicron particles formation and initial layer ash deposition during high temperature oxy-coal combustion

2020 ◽  
Author(s):  
Zhonghua Zhan ◽  
Andrew Chiodo ◽  
Minmin Zhou ◽  
Kevin Davis ◽  
Dave Wang ◽  
...  
Keyword(s):  
High Temperature ◽  
Coal Combustion ◽  
Submicron Particles ◽  
Ash Deposition ◽  
Initial Layer

In-situ reaction between arsenic/selenium and minerals in fly ash at high temperature during blended coal combustion

2020 ◽  
Vol 48 (11) ◽  
pp. 1356-1364
Author(s):  
Jun HAN ◽  
Yang-shuo LIANG ◽  
Bo ZHAO ◽  
Zi-jiang XIONG ◽  
Lin-bo QIN ◽  
...  
Keyword(s):  
High Temperature ◽  
Fly Ash ◽  
Coal Combustion ◽  
In Situ Reaction ◽  
Blended Coal

Capture of arsenic in coal combustion flue gas at high temperature in the presence of CaSiO3 with good anti-sintering

2020 ◽  
Vol 205 ◽  
pp. 106428 ◽  
Author(s):  
Yue Cao ◽  
Bing Song ◽  
Min Song ◽  
Fanyue Meng ◽  
Yuexing Wei ◽  
...  
Keyword(s):  
High Temperature ◽  
Flue Gas ◽  
Coal Combustion

scholarly journals Insights on organic aerosol aging and the influence of coal combustion at a regional receptor site of Central Eastern China

2013 ◽  
Vol 13 (4) ◽  
pp. 10809-10858 ◽  
Author(s):  
W. W. Hu ◽  
M. Hu ◽  
B. Yuan ◽  
J. L. Jimenez ◽  
Q. Tang ◽  
...  
Keyword(s):  
High Resolution ◽  
Black Carbon ◽  
Coal Combustion ◽  
Eastern China ◽  
Organic Aerosols ◽  
Receptor Site ◽  
Organic Aerosol ◽  
Submicron Particles ◽  
Central Eastern ◽  
Photochemical Age

Abstract. In order to understand the aging and processing of organic aerosols (OA), an intensive field campaign (Campaign of Air Pollution at Typical Coastal Areas In Eastern China, CAPTAIN) was conducted in March–April at a receptor site (Changdao Island) in Central Eastern China. Multiple fast aerosol and gas measurement instruments were used during the campaign, including a high resolution time-of-flight aerosol mass spectrometer (HR-ToF-AMS) was applied to measure mass concentrations and non-refractory chemical components of submicron particles (PM1nr). The average mass concentration of PM1 (PM1nr + black carbon) was 47 ± 36 μg m−3 during the campaign and showed distinct variation depending on back trajectories and their overlap with source regions. Organic aerosol (OA) is the largest component of PM1 (30%), followed by nitrate (28%), sulfate (19%), ammonium (15%), black carbon (6%), and chloride (3%). Four OA components were resolved by Positive Matrix Factorization (PMF) of the high-resolution spectra, including low-volatility oxygenated organic aerosol (LV-OOA), semi-volatile oxygenated OA (SV-OOA), hydrocarbon-like OA (HOA) and a coal combustion OA (CCOA), reported here for the first time. The mass spectrum of CCOA has high abundance of fragments from polycyclic aromatic hydrocarbons (PAHs) (m/z 128, 152, 178 etc.). The average atomic ratio of oxygen to carbon in OA (O/C) at Changdao is 0.59, which is comparable to other field studies reported at locations downwind of large pollution sources, indicating the oxidized nature of most OA during the campaign. The evolution of OA elemental composition in the Van Krevelen diagram (H/C vs. O/C) shows a slope of −0.63, however, the OA influenced by coal combution exhibits a completely different evolution that appears dominated by physical mixing. The aging of organic aerosols vs. with photochemical age was investigated. It is shown that OA/ΔCO, as well as LV-OOA/ΔCO and SV-OOA/ΔCO, positively correlated with photochemical age. LV-OOA accounted for 73% of the OA secondary formation in the oldest plumes (photochemical age of 25 h). The kOH at Changdao by assuming SOA formation and aging as a first-order process proportional to OH was calculated to be is 5.2 × 10−12 cm3 molec−1 s−1 which is similar to those determined in recent studies of polluted air in other continents.

Emission and simulation of primary fine and submicron particles and water-soluble ions from domestic coal combustion in China

2020 ◽  
Vol 224 ◽  
pp. 117308 ◽  
Author(s):  
Qin Yan ◽  
Shaofei Kong ◽  
Yingying Yan ◽  
Haibiao Liu ◽  
Wei Wang ◽  
...  
Keyword(s):  
Coal Combustion ◽  
Water Soluble ◽  
Submicron Particles ◽  
Soluble Ions ◽  
Water Soluble Ions
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