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Influences of Waste Iron Residue on Combustion Efficiency and Polycyclic Aromatic Hydrocarbons Release during Coal Catalytic Combustion

Category: Control Techniques

Volume: 15 | Issue: 7 | Pages: 2720-2729
DOI: 10.4209/aaqr.2015.04.0227
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Linbo Qin, Yajie Zhang, Jun Han , Wangsheng Chen

  • School of Resource and Environmental Engineering, Wuhan University of Science and Technology, Wuhan 430081, China

Highlights

Adding 0.5% waste iron residue, the coal combustion efficiency was enhanced.
Adding 0.5% waste iron residue, the total PAHs concentration was decreased.
The maximum removal of the total PAHs TEQ was 45.24% by waste iron residue.


Abstract

Effects of adding waste iron residue on the combustion efficiency and the removal of Polycyclic Aromatic Hydrocarbons (PAHs) during coal combustion were investigated in a laboratory scaled drop tube furnace at a temperature range of 950–1250°C. The experimental results indicated that adding 0.5% waste iron residue had a good performance on enhancing combustion efficiency during coal combustion. Meanwhile, the addition of 0.5% waste iron residue was also favor for reducing PAHs emission as well as PAHs TEQ concentrations during coal combustion at a temperatures range of 950–1250°C. With adding 0.5% waste iron residue (WIR), the coal combustion efficiency was enhanced by 6.15%, and the total PAHs concentration in flue gas was decreased by 44.94% at 1150°C. The maximum removal of the total PAHs TEQ concentration was as high as 45.24% at 1250°C.

Keywords

Coal Catalyst Combustion PAHs Removal efficiency


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