[1]贾进章①②,张先如①②,王枫潇①②.NH4H2PO4-KHCO3混合粉体对管网甲烷爆炸的抑制特性[J].爆破器材,2024,53(01):43-50.[doi:10.3969/j.issn.1001-8352.2024.01.007]
　JIA Jinzhang,ZHANG Xianru,WANG Fengxiao.Inhibition Properties of NH4H2PO4-KHCO3 Mixed Powder on Methane Explosion in the Pipe Network[J].EXPLOSIVE MATERIALS,2024,53(01):43-50.[doi:10.3969/j.issn.1001-8352.2024.01.007]
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NH4H2PO4-KHCO3混合粉体对管网甲烷爆炸的抑制特性()
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《爆破器材》[ISSN:1001-8352/CN:32-1163/TJ]

卷:
53
期数:
2024年01
页码:
43-50
栏目:
爆炸材料
出版日期:
2024-01-19

文章信息/Info

Title:
Inhibition Properties of NH4H2PO4-KHCO3 Mixed Powder on Methane Explosion in the Pipe Network
文章编号:
5858
作者:
贾进章①②; 张先如①②; 王枫潇①②
①辽宁工程技术大学安全科学与工程学院（辽宁阜新，123000）
②辽宁工程技术大学矿山热动力灾害与防治教育部重点实验室（辽宁阜新，123000）
Author(s):
JIA Jinzhang①②;  ZHANG Xianru①②;  WANG Fengxiao①②
①College of Safety Science and Engineering, Liaoning Technical University (Liaoning Fuxin, 123000)
②Key Laboratory of Mine Thermodynamic Disasters and Control of Ministry of Education, Liaoning Technical University (Liaoning Fuxin, 123000)
关键词:
甲烷爆炸; 混合粉体; 抑爆性能; 混合比例; 实验管网
Keywords:
methane explosion;  mixed powder;  explosion suppression performance;  mixing ratio;  experimental pipe network
分类号:
TJ53.3; TQ221.1+1
DOI:
10.3969/j.issn.1001-8352.2024.01.007
文献标志码:
A
摘要:
在自行搭建的管网实验系统中，将常用于抑制甲烷爆炸的碳酸氢钾KHCO3与磷酸二氢铵NH4H2PO4进行不同比例的混合。选取5种不同的粉体配比，对比单一粉体以及各抑爆工况下各测点的爆炸峰值压力、火焰峰值速度和火焰峰值温度等爆炸特征参数，获得抑制管网甲烷爆炸的最佳工况，并阐述了抑爆机理。结果表明：混合粉体对管网甲烷爆炸的抑制性能优于单一粉体；KHCO3与NH4H2PO4都易受热分解；其中，KHCO3可以在相对较低的温度下迅速完成热解过程，从而吸收更多的反应热，抑爆性能优于NH4H2PO4粉体；混合粉体中，抑爆效果随着KHCO3含量的增加显著提高。在5种混合比例中，当KHCO3与NH4H2PO4质量比为2.0∶1.0时，抑爆效果最佳。KHCO3与NH4H2PO4表现出良好的爆炸抑制效果，研究所得结论可为抑制甲烷爆炸研究提供参考。
Abstract:
Potassium bicarbonate (KHCO3), commonly used as the methane explosion suppression, was mixed with ammonium dihydrogen phosphate (NH4H2PO4) in different proportions in a self-built pipeline experimental system. Five different powder ratios were selected to compare the explosion characteristic parameters such as peak explosion pressure, peak flame velocity, and peak flame temperature at each monitoring point under a single powder and various explosion suppression conditions. The optimal conditions for suppressing methane explosion in the pipeline network were obtained, and the explosion suppression mechanism was explained. The results show that the suppression performance of mixed powder on methane explosion in pipeline networks is better than that of the single powder. Both KHCO3 and NH4H2PO4 are prone to decomposition during heating, among which KHCO3 can quickly complete the pyrolysis process at a relatively low temperature, thereby absorbing more heat of reaction, and its explosion suppression performance is better than that of NH4H2PO4 powder. The explosion suppression effect significantly improves with the increase of concentration of KHCO3 . Among the five mixing ratios, when the mass ratio of KHCO3 to NH4H2PO4 is 2.0∶1.0, the explosion suppression effect is the best. KHCO3 and NH4H2PO4 exhibit excellent explosion suppression effects. The conclusions obtained in the study can provide theoretical support for the study on methane explosion suppression.

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备注/Memo

备注/Memo:
收稿日期：2023-07-04基金项目：国家自然科学基金（52174183）第一作者：贾进章（1974—），男，博士，教授，博导，主要从事矿井瓦斯爆炸冲击波与通风动力耦合传播机理等方面的研究。E-mail:jiajinzhang@163.com通信作者：张先如（1999—），女，硕士研究生，主要研究方向为安全技术及应用。E-mail:392996844@qq.com
更新日期/Last Update: 2024-01-12