Journal
ENERGY & FUELS
Volume 32, Issue 10, Pages 10586-10594Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.energyfuels.8b02464
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Funding
- National Key Research and Development Plan [2016YFC0203705]
- National Natural Science Foundation [U1609212]
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Particulate matter (PM) emitted from stationary sources can be classified into filter particulate matter (FPM) and condensable particulate matter (CPM). Because CPM significantly contributes to total emission, a method and an instrument for testing and measuring CPM were developed on the basis of the principle of dilution and condensation. Then, a parallel sampling analysis of CPM and FPM was carried out at the inlet of a desulfurization system and stack of coal-fired units. Results showed that CPM accounted for 76.73% of the total particulate concentration and the removal efficiencies of FPM and CPM were 94.93 and 65.37%, respectively, after wet flue gas desulfurization (WFGD) and wet electrostatic precipitator (WESP). The microscopic morphology, ion concentration, and organic components of CPM were analyzed. CPM was dispersed after formation, and most of them were smaller than 2.5 mu m. The main element components were Al, Ca, Na, Fe, Si, C, O, S, F, and Cl. Na+ was the most abundant metal cation in the CPM sample. The main parts of the inorganic anions were F and Cl-. C-10-C-19 and C-20-C-29 were the main components of the alkanes, while the alkanes above C-30 were only 3.93 and 6.29% at the WFGD inlet and WESP outlet, respectively.
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