摘要
为了深入研究过氧化二叔丁基(DTBP)燃爆危险性,采用液体自燃点测试仪研究浓度对DTBP自燃温度的影响,采用爆炸极限测试仪探究初始温度对DTBP爆炸下限的影响,采用快速筛选量热仪(RSD)探究升温速率对DTBP起始分解温度和分解压力的影响。结果表明:随浓度增加,试样自燃温度有先下降后上升的趋势,在浓度为4.35 mmol/L时,其自燃温度最低(165.0℃);初始温度以20℃的间隔由70℃逐步升至150℃,相应爆炸下限由1.096%降至0.802%;在2.5℃/min、5.0℃/min、7.5℃/min、10.0℃/min的升温速率条件下,随其速率增加,分解温度由135.9℃升至147.2℃,分解压力由114.21 MPa升至163.26MPa。结合试验数据,可推断出浓度、温度、升温速率对DTBP燃爆危险性的影响,从而能够更好地掌握试样的性质,为预防其燃爆事故的发生提供参考。
This paper is aimed to investigate the influence of the different conditions on the combustion and explosion hazards of di-tert-butyl peroxide( DTBP). To achieve the said purpose,we have conducted the test of the spontaneous combustion temperature of the samples under the different concentration rate conditions,which can be measured and repeated through a liquid spontaneous combustion temperature tester,and then through the analysis of the different samples in accordance with the various of spontaneous combustions under the different concentration rates.For example,when taking the boiling point of the sample( 110℃) as the reference point,2 points of temperature( say,70 ℃,90 ℃,130 ℃,150 ℃) were to be taken pre-&-pro the experiment,5 temperatures can be set as the initial temperature one by one. To explore and disclose the impact of the different initial temperatures( 70 ℃,90 ℃,110 ℃,130 ℃,and 150 ℃) on the lower explosion limit of the sample via the explosion limit tester,the effects of the different heating rates on the decomposition temperatures and decomposition pressures of the sample can be tested and inspected with a rapid screening calorimeter( RSD). The results of the above experiments should demonstrate that: with the increase of the concentration rate,the autoignition temperature of the sample may tend to decrease first and then increase. And,at the concentration rate of 4. 35 mmol/L,the auto-ignition temperature should be the lowest( 165. 0 ℃) .However,the initial temperature may tend gradually to flow up to150 ℃ from 70 ℃ at 20 ℃ interval. And,later,the corresponding lower limit of the explosion may decrease from 1. 096%to 0. 802%. Nevertheless,when the heating rates rise to 2. 5℃/min,5. 0 ℃/min,7. 5 ℃/min,10. 0 ℃/min,respectively,the decomposition temperatures would grow up from 135. 9 ℃to 147. 2 ℃ with the increase of the rate,with the decomposition pressure going up from 114. 2 MPa to 163. 26 MPa. And,then,combined with the experimental data,the effects of con
作者
张金锋
柳晓凯
任红威
李晨曦
张睛
ZHANG Jin-feng;LIU Xiao-kai;REN Hong-wei;LI Chen-xi;ZHANG Jing(School of Environmental Science and Engineering,Hebei University of Science and Technology,Shijiazhuang 050018,China)
出处
《安全与环境学报》
CAS
CSCD
北大核心
2020年第5期1715-1720,共6页
Journal of Safety and Environment
基金
河北省自然科学基金项目(E2017208083)
河北省高校科学技术研究项目(ZD2018046)。
关键词
安全工程
过氧化二叔丁基
自燃温度
爆炸下限
分解温度
燃爆危险性
safety engineering
di-tert-butyl peroxide
spontaneous combustion temperature
explosion lower limit
decomposition temperature
explosive risk
