1.中国科学院过程工程研究所多相复杂系统国家重点实验室,北京 100190
2.中国科学院大学化学化工学院,北京 100190
3.光大环保技术研究院(南京)有限公司焚烧技术研究所,江苏 南京 211100
朱传强(1987—),男,博士研究生,zhucq@ebchinaintl.com.cn
高士秋(1964—),男,博士,研究员,sqgao@ipe.ac.cn
收稿:2018-09-17,
修回:2018-12-19,
网络首发:2026-07-24,
纸质出版:2019-03-05
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朱传强, 刘殊远, 余剑, 高士秋, 许光文. 富氧富水蒸气条件下燃烧高氮燃料的NOx排放特性[J]. 化工学报, 2019, 70(3): 1048-1055 DOI: 10.11949/j.issn.0438-1157.20181042.
ZHU Chuanqiang, LIU Shuyuan, YU Jian, GAO Shiqiu, XU Guangwen. NOx emission characteristics of high-N fuel combustion in atmospheres rich in O2 and steam[J]. CIESC Journal, 2019, 70(3): 1048-1055 DOI: 10.11949/j.issn.0438-1157.20181042.
朱传强, 刘殊远, 余剑, 高士秋, 许光文. 富氧富水蒸气条件下燃烧高氮燃料的NOx排放特性[J]. 化工学报, 2019, 70(3): 1048-1055 DOI: 10.11949/j.issn.0438-1157.20181042. DOI:
ZHU Chuanqiang, LIU Shuyuan, YU Jian, GAO Shiqiu, XU Guangwen. NOx emission characteristics of high-N fuel combustion in atmospheres rich in O2 and steam[J]. CIESC Journal, 2019, 70(3): 1048-1055 DOI: 10.11949/j.issn.0438-1157.20181042. DOI:
在富氧富水蒸气条件下,研究了富含氮的燃料白酒糟在流化床中燃烧时NO
x
的排放特性。结果表明,在过量空气系数1.2条件下,水蒸气和O
2
对NO
x
的生成相互影响。当O
2
浓度低于约35%时,向燃烧气中加入水蒸气能抑制NO
x
生成,使烟气中NO
x
的排放浓度和燃料N转化为NO
x
的转化率降低;而当氧气浓度高于约35%时,加入水蒸气促进了NO
x
生成,表明提高氧气浓度使得氧化作用起到主导地位。NO
x
生成量随温度的升高先增加后减少
,在较高氧气浓度下,NO
x
生成量随温度升高而降低的转折点发生在较低的温度;燃烧气氛中添加水蒸气延迟了转折点的发生,使转折点发生在较高温度。
The NO
x
emission characteristics of the nitrogen-rich fuel distiller's grains in a fluidized bed were studied under oxygen-rich and steam-rich conditions. The effect of steam on NO
x
emission is competitive with the influence from varying oxygen concentration in the combustion gas at the excessive air ratio of 1.2. When the oxygen concentration was below a value of about 35%
the steam addition decreased the NO
x
formation to lower the NO
x
concentration in the flue gas and also the fuel-N conversion into NO
x
. When oxygen concentration in the combustion gas was above the preceding critical value of about 35%
the addition of steam into the burning atmosphere resulted in higher NO
x
emission than the case without steam addition
showing the dominance of the enhanced oxidation with raising the O
2
concentration. The NO
x
emission would increase first and finally decrease with raising temperature
and the higher O
2
concentration in the combustion gas lowered the occurrence temperature for such a NO
x
decrease with raising temperature. The presence of steam in the combustion atmosphere delayed the occurrence of such a decrease so that it appeared at higher temperature.
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