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Reburning and burnout simulations of natural gas for heavy oil combustion

机译：重油燃烧天然气的再燃和燃尽模拟

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Reburning and burnout simulations were carried out through PLUG code of CHEMKIN-Ⅲ using a reduced mechanism, in order to determine preliminary experimental parameters for achieving maximum NO_x reduction to implement the reburning technology for heavy oil combustion in pilot scale equipments in Brazil. Gas compositions at the entrance of the reburning zone were estimated by the AComb program. Simulations were performed for eight conditions in the usual range of operational parameters for natural gas reburning. The maximum NO reduction (ca. 50%) was reached with 10 and 17.5% of power via natural gas and 1.5 and 3.0% O_2 excess, respectively, at 1273 K. The model predicts 250 ppm of NO, 50 ppm of CO and air mass flows in the range of about 50-130 kg/h for burnout.
机译：为了减少巴西最大规模的NO_x还原，为实现巴西的中试规模设备的重油燃烧再燃烧技术，通过CHEMKIN-Ⅲ的PLUG代码进行了再燃和燃尽模拟，以确定减少NOxx排放的初步实验参数。再燃区入口处的气体成分由AComb程序估算。在天然气再燃烧的通常操作参数范围内，针对八个条件进行了模拟。在1273 K时，通过天然气分别提供10％和17.5％的功率，以及过量的1.5％和3.0％的O_2，达到最大的NO减少量（约50％）。该模型预测NO的含量为250 ppm，CO和空气的含量为50 ppm燃尽的质量流量约为50-130 kg / h。

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