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2584029 
Journal Article 
Characteristics and composition of particulate matter from coal-fired power plants 
Liu XiaoWei; Xu MingHou; Yao Hong; Yu DunXi; Zhang ZhongHua; Lue DangZhen 
2009 
1 
Science in China Series E: Technological Sciences
ISSN: 1006-9321
EISSN: 1862-281X 
52 
6 
1521-1526 
WOS:000266094600007 
Measurements of the characteristics of particulate matter (PM) were performed at the inlet and outlet of the electrostatic precipitators (ESP) of four boilers in two full-scale pulverized coal power plants. PM was collected with a 13-stages low-pressure-impactor (LPI) having aerodynamic cut-off diameter ranging from 10.0 to 0.03 mu m for a size-segregated collection. The properties of PM including its concentration, mass size distribution, emission characteristics, percent penetration of PM through ESP and elemental composition were investigated. The experimental results indicate that, in all the cases the mass size distribution of PM(10) had typical bimodal. PM(1) contained up to 1.15 wt% of the total particle (TP) generated in the boilers. PM(2.5) contained about 2 wt%-7 wt% of the TP and PM(10) contained about 4 wt%-19 wt% of the TP. When additive limestone used for desulphurization as sorbent besides PM generated from coal combustion, there was new PM generated from limestone. Penetration as a function of particle diameter had a clear peak in particle size ranging from 0.2 to 0.6 mu m. Particles in the submicrometer size range were much more difficult to be collected with ESP than larger particles. Distributions of individual elements within PM(10) were different. 
particulate matter; coal-fired; characteristic; penetration