4.5 Article

Effects of Pressure and Coal Rank on the Oxy-Fuel Combustion of Pulverized Coal

期刊

ENERGIES
卷 15, 期 1, 页码 -

出版社

MDPI
DOI: 10.3390/en15010265

关键词

pressurized oxy-fuel combustion; single coal particle; ignition characteristics; flat-flame burner optical diagnosis

资金

  1. National Key Research and Development Program of China [2019YFE0100100]

向作者/读者索取更多资源

In this study, a visual pressurized flat-flame reaction system was used to investigate the ignition and combustion characteristics of coal particles of different sizes. The results showed that pressure greatly affected the ignition delay time and pyrolysis process of coal.
Pressurized oxy-fuel combustion technology is the second generation of oxy-fuel combustion technology and has low energy consumption and low cost. In this research, a visual pressurized flat-flame reaction system was designed. A particle-tracking image pyrometer (PTIP) system based on a high-speed camera and an SLR camera was proposed. Combining the experimental system and data-processing method developed, the ignition and combustion characteristics of a single coal particle between 69 and 133 mu m in size were investigated. The results indicated that at atmospheric pressure, the ignition delay time of ShanXi (SX) anthracite coal was longer than that of ShenHua (SH) bituminous coal, while that of PRB sub-bituminous coal was the shortest. As the pressure rose, the ignition delay time of the PRB sub-bituminous coal and SX anthracite coal showed a continuous increasing trend, while the ignition delay time of SH bituminous coal showed a trend of first increasing and then decreasing. Moreover, pressure also affects the pyrolysis process of coal. As the pressure increases, it became more difficult to release the volatiles produced by coal pyrolysis, which reduced the release rate of volatiles during the ignition stage, and prolonged the release time and burning duration time of volatiles.

作者

我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。

评论

主要评分

4.5
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

暂无数据
暂无数据