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首页> 外文期刊>Fuel >NOx emission profile determined by in-situ gas monitoring of iron ore sintering during packed-bed coke combustion
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NOx emission profile determined by in-situ gas monitoring of iron ore sintering during packed-bed coke combustion

机译：通过填充床焦燃烧过程中铁矿石烧结的原位气体监测确定NOx排放曲线

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摘要

Coke combustion inside the iron ore sintering process is a major source of NOx in the steel industry. All the associated combustion reactions can be categorized as packed-bed combustion. Therefore, detailed analysis of NOx emission inside the packed bed is necessary to suppress the emission of environmentally hazardous NOx. In this study, the time-course profile of the conversion rate of fuel-N in coke to NOx was determined during packed-bed combustion. The conversion rate was calculated at each reaction time by analyzing the results of in-situ gas measurement inside the iron ore sintering reactor during the combustion. Both the emission of NO and the conversion rate were found to be higher in the lower-temperature region in the combustion layer, corresponding to the beginning of coke combustion. This result proved that it is necessary to reduce NOx emission at the beginning of coke combustion inside the iron ore sintering process to reduce NOx emission from the sintering process.
机译：铁矿石烧结过程中的焦炭燃烧是钢铁行业NOx的主要来源。所有相关的燃烧反应都可以归类为填充床燃烧。因此，需要对填充床内部的NOx排放进行详细分析，以抑制对环境有害的NOx排放。在这项研究中，在填充床燃烧过程中确定了焦炭中燃料N转化为NOx的时程曲线。通过分析燃烧过程中铁矿石烧结反应器内部的原位气体测量结果，计算出每个反应时间的转化率。发现在燃烧层的较低温度区域中NO的排放和转化率均较高，这对应于焦炭燃烧的开始。该结果证明，有必要在铁矿石烧结过程中减少焦炭燃烧开始时的NO x排放，以减少烧结过程中的NO x排放。

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