Effects of heating rate and AAEM on the production of NH<inf>3</inf> and HCN during pyrolysis of shengli brown coal
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This study is to examine the effects of heating rate and AAEM (alkali and alkaline earth metallic species) on the generation of NH 3 and HCN during the pyrolysis of Shengli brown coals at two different temperatures of 773 and 1073 K. All the experiments were conducted in a fixed-bed/fluidised-bed quartz reactor. The results show that high heating rate and high temperature have substantially promoted the formation of both NH 3 and HCN. By comparing the results from raw coal and acid-washed coal, it was found that reduction in AAEM (mainly Na and Ca in this case) could lead to less production of NH3, but more formation of HCN. Copyright © (2013) by the International Pittsburgh Coal Conference.
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