爆燃
聚磷酸铵
化学
热分解
蔗糖
燃烧
分析化学(期刊)
化学工程
材料科学
色谱法
爆炸物
有机化学
阻燃剂
起爆
工程类
作者
Chuyuan Huang,Bihe Yuan,Hongming Zhang,Qi Zhao,Ping Li,Xianfeng Chen,Yalong Yun,Gongqing Chen,Mengmeng Feng,Yang Li
标识
DOI:10.1016/j.jhazmat.2020.123653
摘要
In this investigation, ammonium polyphosphate (APP) is applied to suppress the deflagration of sucrose dust. Through the systematic research on flame propagation images and temperature, decomposition behavior of powder samples and the compositions of deflagration residue, the suppression performance and mechanism of APP on sucrose deflagration are profoundly summarized. Timing diagrams show that APP contributes to reduce deflagration flame brightness, increases ignition delay time and flame fault area. The minimum inerting concentration of APP for sucrose deflagration is determined to be 8 %. From the collected deflagration flame temperature curves, it is confirmed that APP can delay peak temperature arrival time, weaken temperature fluctuation, and decrease peak values of flame temperature and temperature rising rate. Through the analysis on thermal decomposition of samples and deflagration residue, it is reflected that APP has superior composite suppression effect. It can not only absorb reaction heat, but also decrease deflagration exotherm to improve thermal stability of sucrose particles. Thus, the easily oxidized components in sucrose are protected, and deflagration intensity is effectively weakened. This work provides a new solution for prevention and suppression deflagration of dust waste in sugar industry.
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