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Coal chars employed in the previous studies were usually prepared from coal pyrolysis at high temperatures and then cooled down to the room temperature. As these chars were burned out, they had undergone an additional process: cooling and reheating. The influence of this process on the conversion from char-N to nitrogen oxides had mostly been neglected. In this paper, the influence of cooling and...
The catalytic effects of doping agents on SO 2 emission as well as the coal combustion behavior were investigated by thermogravimetry. All experiments were carried out in a flowing air atmosphere at a heating rate of 20 or 30 o C/min up to 1000 o C. The doping agents employed were NaCl, CaCl 2 , FeCl 3 , FeCl 2 and Fe 2 O 3 . The experimental...
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