Research progress of alkali metals release characteristics during thermal utilization of high-alkali coals

被引：0
|
作者：
Li T. [1 ]
Zhao J. [1 ]
Wei X. [1 ]
机构：
[1] State Key Laboratory of High-Temperature Gas Kinetics, Institute of Mechanics, Chinese Academy of Sciences, Beijing
来源：
Huazhong Keji Daxue Xuebao (Ziran Kexue Ban)/Journal of Huazhong University of Science and Technology (Natural Science Edition) | 2023年 / 51卷 / 01期
关键词：
alkali metals; competitive relationships; elementary reactions; high-alkali coals; NO[!sub]x[!/sub; release characteristics;
D O I：
10.13245/j.hust.239070
中图分类号：
学科分类号：
摘要：
The detailed mechanism of alkali metal release and its influence on NO production during high alkali coal combustion was not systematically discussed．Based on the review of previous work and the latest research results of the research group，the release of alkali metals and its influence on the NO formation were discussed in detail through experiments and chemical reaction calculations． The results showed that the release rate and release amount of alkali metals will be affected by the reaction temperature，heating rate，reaction atmosphere and other mineral elements，and the release process is also accompanied by the mutual conversion of different occurrence forms of alkali metal．It is found that the released alkali metal salts such as NaCl can affect the production of NO by influencing the recombination of H，O and OH radicals according to the kinetic calculation．The competitive relationships among various elementary reactions determine the final results. © 2023 Huazhong University of Science and Technology. All rights reserved.
引用
收藏
页码：92 / 100
页数：8
相关论文
共 84 条
  • [1] WANG N, SHEN R F，, WEN Z G, Life cycle energy efficiency evaluation for coal development and utilization[J], Energy, 179, pp. 1-11, (2019)
  • [2] (2018)
  • [3] (2014)
  • [4] (2018)
  • [5] ZHOU J B，, ZHUANG X G，, ALASTUEY A, Geochemistry and mineralogy of coal in the recently explored Zhundong large coal field in the Junggar basin，Xinjiang province， China[J], International Journal of Coal Geology, 82, 1, pp. 51-67, (2010)
  • [6] 24, 5, pp. 33-37, (2018)
  • [7] SONG G L, SONG W J, QI X B, Sodium transformation characteristics of high sodium coal in circulating fluidized bed at different air equivalence ratios[J], Applied Thermal Engineering, 130, pp. 1199-1207, (2018)
  • [8] 36, 6, pp. 1381-1385, (2015)
  • [9] 37, 9, pp. 35-39, (2010)
  • [10] 33, 11, pp. 841-846, (2013)
123456789