Inhibiting effects of three commercial inhibitors in spontaneous coal combustion

被引：135

作者：

Deng, Jun ^{[1
,2
]}

Yang, Yi ^{[1
,2
]}

Zhang, Yan-Ni ^{[1
,2
]}

Liu, Bo ^{[1
,2
]}

Shu, Chi-Min ^{[3
]}

机构：

[1] Xian Univ Sci & Technol, Coll Safety Sci & Engn, 58 Yanta Mid Rd, Xian 710054, Shaanxi, Peoples R China

[2] Xian Univ Sci & Technol, Shaanxi Key Lab Prevent & Control Coal Fire, 58 Yanta Mid Rd, Xian 710054, Shaanxi, Peoples R China

[3] Natl Yunlin Univ Sci & Technol, Ctr Proc Safety & Ind Disaster Prevent, 123,Univ Rd,Sec 3, Touliu 64002, Yunlin, Taiwan

来源：

ENERGY | 2018年 / 160卷

基金：

中国国家自然科学基金;

关键词：

Low metamorphic grade; Spontaneous coal combustion; Reaction mechanism; Kinetic analysis; Inhibiting ability; OXIDATION;

D O I：

10.1016/j.energy.2018.07.040

中图分类号：

O414.1 [热力学];

学科分类号：

070201 [理论物理];

摘要：

Three commercial inhibitors were investigated for their suitability in preventing the spontaneous combustion of noncaking coal (NCC) and gas coal (GC), two coals of low metamorphic grades. Simultaneous thermal analysis, Fourier transform infrared spectroscopy, and kinetic analysis demonstrated that ZniMg/Al-CO2-layered double hydroxides (LDHs) and diammonum phosphate ([NH4](2)HPO4) both exhibited substantial inhibiting effects. Therefore, Zn/Mg/Al-CO3-LDHs and (NH4)(2)HPO4 may be used for the prevention of spontaneous coal combustion. The reaction mechanisms and kinetic models for NCC and GC mixed with inhibitors were also determined. Na3PO4 demonstrated poor inhibiting ability in NCC and GC and even promoted the combustion of GC. Therefore, Na3PO4 is not recommended as an inhibitor for NCC and GC. Finally, the results indicated that (NH4)(2)HPO4 and ZniMg/Al-CO3-LDHs can be used to decrease CO2 release, limiting the oxidation reaction of coal and attenuating greenhouse gas emissions. This study can serve as a reference for efforts to prevent spontaneous coal combustion and for the development of new inhibitors. (C) 2018 Elsevier Ltd. All rights reserved.

引用

页码：1174 / 1185

页数：12

共 18 条

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