Three-Dimensional Temperature Distribution of Impinging Flames in an Opposed Multiburner Gasifier
Three-Dimensional Temperature Distribution of Impinging Flames in an Opposed Multiburner Gasifier
复制标题
DOI：
10.1021/ie2028602
复制
发表时间：
2012-05
影响因子：
4.2
通讯作者：
Gong Yan;Q. Guo;Qinfeng Liang;Zhi-jie Zhou;G. Yu
中科院分区：
文献类型：
--
作者：
Gong Yan;Q. Guo;Qinfeng Liang;Zhi-jie Zhou;G. Yu
基于实验室规模的对置多燃烧器(OMB)气化炉，提出了一种光学断层成像(OST)和双色法相结合的新方法，并利用安装在气化炉顶部的单个电荷耦合器件(CCD)摄像机重建了气化炉的三维(3-D)温度分布。首次将该重建方法应用于柴油气化过程，并利用标定的热电偶和侧面成像系统对重建结果进行了验证，从而重建了水煤浆气化过程的三维温度分布。结果表明，与柴油相比，柴油的温度分布更均匀，平均温度更高，火焰轮廓模糊。气化炉的整体温度随氧碳比的增加而升高，1700~2200K的高温区稳定地保持在气化炉的轴线上，并与气化炉保持一定的安全距离。
Based on the bench-scale opposed multiburner (OMB) gasifier, a new combination of the optical sectioning tomography (OST) and two-color method has been proposed and applied to reconstruct the three-dimensional (3-D) temperature distribution of the gasifier by employing a single charge-coupled device (CCD) camera installed on the top of the gasifier. The reconstruction method is first applied in diesel gasification and the reconstructed results are validated by calibrated thermocouples and a side imaging system; thus the 3-D temperature distribution of coal–water slurry (CWS) gasification is reconstructed. The results show that the temperature distribution is more spatially homogeneous and the average temperature is higher with blurry contours of flame than that of diesel. The overall temperature of the gasifier rises with the increase of oxygen to carbon ratio, and the high temperature region which ranges from 1700 to 2200 K remains in the axis of the gasifier steadily and remains a safe distance from the...