The effect of the grinding process on pore structures, functional groups and release characteristic of flash pyrolysis of superfine pulverized coal
- 影响因子：6.609
- DOI码：10.1016/j.fuel.2018.08.081
- 发表刊物：Fuel
- 关键字：Superfine pulverized coalPY-GC–MSPore structuresCarbon containing functional groups
- 摘要：Due to the superiority on the reduction of pollutant emissions by applying superfine pulverized coal with air-staged combustion and oxygen-enriched combustion, it has attracted more and more attention. Grinding process plays a crucial role in the variation of the physicochemical properties of raw coal. In this paper, the different scales of pore structures changing with particle size were investigated. The varying principle of pore structures during the grinding process was discussed. Our results indicate that as the particle size decreases, it has more developed pore structures and especially the concentration of micro-pores increases, which provide larger specific surface area and porosity that are beneficial to heat and mass transfer. Furthermore, the effect of particle size on the distributing characteristic of flash pyrolysis products by PY-GC–MS is studied, combining the analysis of carbon containing functional groups. Particle with smaller size has a larger content of oxygen containing functional groups and less concentration of Csingle bondC and Csingle bondH. Compared to HN coal, the proportion of aliphatic compounds in total release quantity is higher in NMG coal. In addition, the concentration of oxygen-bearing organic compounds first increases and then reduces, and it reaches to the maximal at around 14 µm.
- 合写作者：Wang Yao, Hai Zhang, Junfang Ma, Xiumin Jiang
- 第一作者：LeiLuo
- 通讯作者：Jiaxun Liu
- 卷号：235
- 页面范围：1337-1346
- ISSN号：0016-2361
- 是否译文：否
- 发表时间：2019/01/01
- 发布期刊链接：https://www.sciencedirect.com/science/article/pii/S0016236118314510
