Experimental study of NOx emissions in a 30 kWth pressurized oxy-coal fluidized bed combustor
Experimental study of NOx emissions in a 30 kWth pressurized oxy-coal fluidized bed combustor
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30kWth加压富氧煤流化床燃烧室NOx排放实验研究
DOI：
10.1016/j.energy.2019.116756
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发表时间：
2020-03
期刊：
影响因子：
9
通讯作者：
Liu Hao
中科院分区：
文献类型：
--
作者：
Pang Lei;Shao Yingjuan;Zhong Wenqi;Gong Zheng;Liu Hao
富氧煤燃烧作为燃煤电厂最有前途的碳捕集技术之一，在过去的二十年里引起了广泛的关注。与大气氧燃料燃烧相比，加压氧燃料燃烧具有进一步减少由碳捕获和储存引起的能量损失并提高净发电厂效率的潜力。虽然许多研究人员已经研究了大气富氧煤燃烧的NOx排放，加压富氧煤燃烧条件下的NOx排放行为的了解要少得多，需要进一步全面的实验研究与连续燃料供给加压富氧煤燃烧系统，以填补这一知识空白。在30 kW增压流化床燃烧器上进行了一系列富氧煤燃烧试验。系统地研究了燃烧压力、床层温度和过量氧对NOx排放的影响。实验结果表明，燃烧压力从0.1 MPa增加到0.4 MPa导致NOx排放量显着减少。在较高的燃烧压力条件下，床温度或过量氧气的增加导致较高的NOx排放，这与在大气压力燃烧条件下观察到的一致。此外，研究发现，在较高的燃烧压力下，温度升高对NOx排放的促进作用比在大气压下弱。
As one of the most promising carbon capture technologies for coal-fired power plants, oxy-coal combustion has attracted wide interests during the last two decades. In comparison to atmospheric oxy-fuel combustion, pressurized oxy-fuel combustion has the potential to further reduce the energy penalties caused by the carbon capture and storage and improve the net power plant efficiency. Although many researchers have investigated the NOxemissions of atmospheric oxy-coal combustion, the NOxemission behaviors under pressurized oxy-coal combustion conditions are much less understood and further comprehensive experimental investigations with continuous fuel-feeding pressurized oxy-coal combustion systems are needed in order to fill this knowledge gap. In the present study, a series of oxy-coal combustion experiments were conducted in a 30 kWthpressurized fluidized bed combustor. The effects of combustion pressure, bed temperature and excess oxygen on the NOxemissions were investigated systematically. The experimental results have shown that an increase in combustion pressure from 0.1 MPa to 0.4 MPa leads to a significant reduction in NOxemissions. An increase in bed temperature or excess oxygen results in higher NOxemissions under the higher combustion pressure conditions, which is consistent with what is observed under the atmospheric pressure combustion condition. Besides, it is found that the promoting effect of temperature increase on NOxemissions under the higher combustion pressures is weaker than that under the atmospheric pressure.
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DOI：
10.1016/j.proci.2008.06.025
发表时间：
2009
期刊：
--
影响因子：
--
作者：
H. Stadler;Dragisa Ristic;M. Förster;A. Schuster;R. Kneer;G. Scheffknecht
通讯作者：
H. Stadler;Dragisa Ristic;M. Förster;A. Schuster;R. Kneer;G. Scheffknecht
影响因子：
5.3
作者：
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通讯作者：
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影响因子：
7.4
作者：
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通讯作者：
G. J. Zijlma;A. Jensen;J. Johnsson;C. M. Bleek
影响因子：
11.2
作者：
Hao Liu;Shao Yingjuan
通讯作者：
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影响因子：
15.1
作者：
C. Lupiáñez;L. I. Díez;L. Romeo
通讯作者：
C. Lupiáñez;L. I. Díez;L. Romeo