Effect of Al2O3 additive on formation of PM2.5 in O2/CO2 atmosphere during coal combustion

Author

Qu Cheng-rui ; Bin, Xu ; Jian, Wu ; Xue-tao, Wang ; Feng-ying, Wu ; Chun-mei, Liu

Author_Institution

Vehicle & Motive Power Eng. Coll., Henan Univ. of Sci. & Technol., Luoyang, China

fYear

2011

fDate

15-17 April 2011

Firstpage

5878

Lastpage

5881

Abstract

The influence of Al₂O₃ additive on the emission characteristics of inhalable particles has been studied with a tube furnace. The combustion tests were carried out at 1123K under O₂/CO₂ conditions. The inhalable particulates after combustion were collected into an Electrical Low Pressure-Impactor (ELPI). Results indicate that Al₂O₃ additive is an important factor for the formation of PM25 (particulates with diameters less than 2.5μm) during coal combustion under O₂/CO₂ atmosphere. The number and mass concentrations of PMι diminish, but the number and mass concentrations of PMι.ιs enhance slightly after Al₂O₃ is added. The size distributions of PM25 are similar, displaying two peaks around 0.2μm and 2.0μm, restectively. With increasing the additive weight ratio of Al₂O₃, the concentrations of Na, K, Cu and Pb decrease.

Keywords

aluminium compounds; chemical analysis; chemical variables measurement; coal; combustion; mass measurement; Al₂O₃; ELPI; additive weight ratio; coal combustion; combustion testing; electrical low pressure-impactor; inhalable particles; mass concentrations; size distributions; temperature 1123 K; Additives; Aerodynamics; Aluminum oxide; Ash; Coal; Combustion; O2/CO2; PM2.5; additive; coal combustion; formation mechanism;

fLanguage

English

Publisher

ieee

Conference_Titel

Electric Information and Control Engineering (ICEICE), 2011 International Conference on

Conference_Location

Wuhan

Print_ISBN

978-1-4244-8036-4

Type

conf

DOI

10.1109/ICEICE.2011.5776898

Filename

5776898