CHARACTERISTICS AND COMPOSITION OF PARTICULATE MATTER FROM COAL-FIRED POWER PLANTS
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 0.03μm for a size-segregated collection. The properties of PM included 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 PM10 had typical bimodal. PM1 contained up to 1.15％ percent of the total particle (TP) generated in the boilers. PM2.5 contained about 2％-7％ percent of the TP and PM10 contained about 4％-19％ percent of the TP. When additive limestone used to desulphurization as sorbent passed into boiler, besides PM generated from coal combustion, there were new PM generated from limestone. Penetration as a function of particle diameter had a clear peak in particle size range of 0.2-0.6μm. Particles in the submicronmeter size range were much more difficult to collect with ESP than larger particles.
Particulate matter Emission Characteristic Penetration
Xiaowei LIU Hong YAO Yu QIAO Dunxi YU Dangzhen LV Minghou XU
State Key Laboratory of Coal Combustion, Huazhong University of Science and Technology, Wuhan, China
国际会议
第六届煤燃烧国际会议(The 6th International Symposium on Coal Combustion)
武汉
英文
877-882
2007-12-01（万方平台首次上网日期，不代表论文的发表时间）