聚磷酸铵对糖粉火焰传播特性的影响研究

doi:10.16265/j.cnki.issn1003-3033.2019.11.012

中国安全科学学报 ›› 2019, Vol. 29 ›› Issue (11): 71-76.doi: 10.16265/j.cnki.issn1003-3033.2019.11.012

聚磷酸铵对糖粉火焰传播特性的影响研究

员亚龙¹, 陈先锋¹ 教授, 袁必和^**1 副教授, 谭海² 高级实验师, 刘晅亚³ 研究员, 黄楚原¹

1 武汉理工大学安全科学与应急管理学院,湖北武汉 430070;
2 武汉理工大学资源与环境工程学院,湖北武汉 430070;
3 应急管理部天津消防研究所,天津 300381

收稿日期:2019-07-05 修回日期:2019-09-06 发布日期:2020-10-30
通讯作者: ** 袁必和(1988—),男,安徽庐江人,博士,副教授,主要从事安全工程专业方面的教学与科研工作。E-mail: yuanbh@whut.edu.cn。
作者简介:员亚龙 (1994—),男,河南郑州人,硕士研究生,研究方向为气体爆炸、粉尘燃烧等方面。E-mail: yylong@whut.edu.cn。
基金资助:
国家自然科学基金资助(51774221, 51703175);国家重点研发计划项目(2017YFC0804705);中央高校基本科研业务费专项(2019-zy-299);武汉科技大学冶金矿产资源高效利用与造块湖北省重点实验室开放课题基金资助(2019zy001)。

Effects of ammonium polyphosphate on flame propagation characteristics of sugar dust

YUAN Yalong¹, CHEN Xianfeng¹, YUAN Bihe¹, TAN Hai², LIU Xuanya³, HUANG Chuyuan¹

1 School of Safety Science and Emergency Management, Wuhan University of Technology, Wuhan Hubei 430070, China;
2 School of Resources and Environmental Engineering, Wuhan University of Technology, Wuhan Hubei 430070, China;
3 Tianjin Fire Research Institute of Ministry of Emergency Management, Tianjin 300381, China

Received:2019-07-05 Revised:2019-09-06 Published:2020-10-30

摘要/Abstract

摘要： 为明确聚磷酸铵(APP)对糖粉粉尘火焰燃烧特性的影响,采用竖直开口方管道燃烧试验平台,研究不同质量分数APP对糖粉粉尘爆燃火焰特征、火焰速度、火焰温度等参数的影响,并采用热分析仪对糖粉及其APP混合物的热解行为进行了分析。结果表明:随着APP质量分数的增加,糖粉粉尘火焰的亮度逐渐降低;添加质量分数为6%的APP后,糖粉火焰在管道中的最大传播速度由17.3 m/s降低到2.8 m/s,火焰最高温度降低了46.46%,糖粉热解残余量由0.71%提高到16.06%;APP对糖粉火焰抑制作用包括物理抑制和化学抑制,APP热分解反应可吸收燃烧反应中的热量,分解产物可捕捉提燃烧反应中的自由基,从而达到抑制糖粉火焰传播的目的。

关键词: 粉尘爆炸, 糖粉, 聚磷酸铵(APP), 火焰速度, 火焰温度, 热解特性

Abstract: In order to identify effects of APP on flame combustion characteristics of sugar dust, vertical open square experimental platform of pipe burning was used to study influence of APP with different mass fractions on characteristics, velocity and temperature of flame. Then analysis was made on pyrolysis of sugar dust and its mixture with APP by using thermal analyzer. The results show that flame brightness of sugar dust will gradually decrease as APP mass fraction increases. With an addition of APP of 6% mass fractions, the maximum propagation velocity of flame in pipelines will decrease from 17.3 m/s to 2.8 m/s, its maximum temperature decreases by 46.46% and residual amount of pyrolysis products increases from 0.71% to 16.06%. Flame inhibition effects of APP on powdered sugar include physical inhibition and chemical inhibition with its decomposition reaction absorbing heat from combustion reaction while decomposed products capturing free radicals from it, thus achieving the purpose of inhibiting flame propagation of powdered sugar.

Key words: dust explosion, sugar dust, ammonium polyphosphate (APP), flame velocity, flame temperature, pyrolysis characteristic

中图分类号:

X932

员亚龙, 陈先锋, 袁必和, 谭海, 刘晅亚, 黄楚原. 聚磷酸铵对糖粉火焰传播特性的影响研究[J]. 中国安全科学学报, 2019, 29(11): 71-76.

YUAN Yalong, CHEN Xianfeng, YUAN Bihe, TAN Hai, LIU Xuanya, HUANG Chuyuan. Effects of ammonium polyphosphate on flame propagation characteristics of sugar dust[J]. China Safety Science Journal, 2019, 29(11): 71-76.

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聚磷酸铵对糖粉火焰传播特性的影响研究

Effects of ammonium polyphosphate on flame propagation characteristics of sugar dust

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