• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Transactions of The Institution of Chemical Engineers. Process Safety and Environmental Protection, Part B >A study on the FTIR spectra of pre- and post-explosion coal dust to evaluate the effect of functional groups on dust explosion
【24h】

A study on the FTIR spectra of pre- and post-explosion coal dust to evaluate the effect of functional groups on dust explosion

机译：爆炸后爆炸粉尘的FTIR光谱评价函数群对粉尘爆炸的影响

获取原文
获取原文并翻译 | 示例
       
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Fourier transform infrared (FTIR) spectra of coal dust and its explosion solid residues were studied. Coal dust explosion test was carried out on a 20-L explosion device, and the variation of different functional groups and FTIR structural parameters of pre- and post-explosion dust were semi-quantitatively analyzed by deconvolution of the FTIR spectra. In addition, the relationship of explosion pressure (P-m) and pressure rise rate ((dP/dt)(m)) with functional groups was investigated. The results show that the largest consumption of functional groups in coal dust explosion process is distributed in 1800-1000 cm(-1) band, and most of the ether oxygen bond, methyl and benzene ring are removed from the coal macromolecule. The improved condensation degree of coal macromolecular aromatic ring and the decreased aliphatic side chains lead to a more compact coal molecular structure. The consumption of functional groups during coal dust explosion is positively correlated with the P-m and (dP/dt)(m). The research provides a new feasible method for the evaluation of the organic dust explosion risk by its functional group. Moreover, it can be used effectively as basis for suppressing the organic dust explosion. (C) 2019 Institution of Chemical Engineers. Published by Elsevier B.V. All rights reserved.
机译：研究了煤粉的傅里叶变换红外（FTIR）散射和爆炸固体残留物。在20-L爆炸装置上进行煤粉爆炸试验，并通过FTIR光谱的去折叠分析不同官能团和爆炸前粉尘的不同官能团和FTIR结构参数的变化。此外，研究了具有官能团的爆炸压力（P-M）和压力升高速率（（（DP / DT）（M））的关系。结果表明，煤尘爆炸过程中最大官能团消耗量在1800-1000厘米（-1）条带中分布，大部分醚氧键，甲基和苯环从煤大分子中取出。煤大分子芳香环的改善缩合度和降低的脂族侧链导致更紧凑的煤分子结构。煤尘爆炸过程中官能团的消耗与P-M和（DP / DT）正相关。该研究提供了一种通过其功能组评估有机粉尘爆炸风险的新可行方法。此外，它可以有效地用于抑制有机粉尘爆炸的基础。 （c）2019化学工程师机构。 elsevier b.v出版。保留所有权利。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号