Experimental Study of the Impinging Flame Height in an Opposed Multi-burner Gasifier
Experimental Study of the Impinging Flame Height in an Opposed Multi-burner Gasifier
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DOI：
10.1021/ef5007287
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发表时间：
2014-08
期刊：
影响因子：
5.3
通讯作者：
P. Fan;Yan Gong;Qing Zhang;Q. Guo;G. Yu
中科院分区：
文献类型：
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作者：
P. Fan;Yan Gong;Qing Zhang;Q. Guo;G. Yu
在对置式多燃烧器（OMB）气化器中，燃料通过位于反应器长度的大约三分之一处的四个燃烧器注入，并且火焰在反应器的中心彼此撞击。了解撞击和火焰的相互作用对于系统设计、操作和故障排除是重要的。在实验室对置式多燃烧器气化炉的基础上，采用工业摄像机结合高温内窥镜和图像处理技术，研究了柴油和水煤浆气化的撞击火焰高度特性。提出了一种基于伪彩色增强的火焰图像分割方法。结果表明，柴油和水煤浆的撞击火焰高度均随氧碳摩尔比（O/C）的增加而增加，而柴油气化时，在O/C = 1.8时出现一个转折点。与柴油相比，水煤浆火焰高度增加的幅度较小。随着G…
In an opposed multi-burner (OMB) gasifier, fuel is injected through four burners located approximately one-third down the length of the reactor and the flames impinge on each other in the center of the reactor. Understanding the impingement and flame interaction is important for system design, operation, and troubleshooting. On the basis of the bench-scale opposed multi-burner gasifier, industrial cameras combined with high-temperature endoscopes and image processing technology are applied to study the characteristics of the impinging flame height of diesel and coal–water slurry (CWS) gasification. A new approach for flame image segmentation based on the pseudo-color enhancement is proposed. The results show that both the impinging flame heights of diesel and CWS increase with the increase of mole ratio of oxygen/carbon (O/C), while a turning point appears at O/C of 1.8 when it is diesel gasification. In comparison to diesel, the amplitude of the increase of CWS flame heights is smaller. The increase of g...