70%过氧化氢存储热稳定性分析  

Analysis of the thermal stability of the 70% of hydrogen peroxide in stock

作　　者：马翔[1,2] 姜杰[1] 石宁[1] 

机构地区：[1]中国石油化工股份有限公司青岛安全工程研究院,山东青岛266071 [2]青岛科技大学环境与安全工程学院,山东青岛266042

出　　处：《安全与环境学报》2014年第1期113-117,共5页Journal of Safety and Environment

基　　金：国家科技支撑计划课题(2012BAK13B00)

摘　　要：为了考察高浓度过氧化氢存储的适宜条件，利用微型量热仪C600对70％H2O2在室温至250℃范围内的热分解过程进行了研究，模拟计算了扫描速率对H2O2热分解的影响，分别利用Friedman等转化率法和ASTME698法处理试验结果。然后模拟绝热条件下失控反应，并考虑热惰性因子对到达最大反应速率所需时间的影响。结果表明，用等转化率法和ASTNE698法计算得到70％H2O2分解的活化能分别为32～76IO／mol、56．292kJ／mol，结果相差不大。热惰性因子为1．0、1．5、2．0和3．0时，需要确保使用和储存70％啦02的温度分别低于15．3℃、18．8℃、21．6℃、26．4℃。最后，模拟计算了不同包装材料、包装尺寸下70％H2O2的自加速分解温度SADT。在此基础上提出了高浓度H2O2使用及储运过程中的建议防护措施。This paper is aimed to Dresent the results of our study on the thermal kinetic decomposition of 70% H2O2 anti its runaway reac- tion simulation. The reason for us to pick up the topic is that we have to bravely corrfront quite a few serious accidents that have taken place in the factories that are engaged in hydrogen peroxide production and its application in recent years. In order to study the effect of the heat- ing rate on the thermal hazards and the thermal decomposition of 70% H2O2 in the air, we have analyzed the thermal stability of the 70% of hydrogen peroxide in stock with a C600 calorimeter. The results of our testing of the C600 and the data of our study on the different heat- ing rates in the range of 0.5 - 2 ℃/min between 30 250 ℃ have been elaborated through thermokinetics analysis. Contemporaneously, this paper has also studied the effect of different scanning rates on the thermal decomposition process of the hydrogen peroxide through simu- lation and computation. And, then, we have worked out the compostAtion kinetic data from the experimental analysis with Firedman isocon- versional method, and the activated energy of the hydrogen peroxide with ASTM E 698 method. And, what is more important, in hoping to improve the evaluation efficiency to reduce such unhappy acci- dents, we have laid out simulated runaway reactions while taking into account the effects of different thermal inertia factors in case for them to reach the maximum reaction limits. For example, it is necessary to ensure that high concentrated hydrogen peroxide be used and kept in stock at the temperatures lower than 15.3 ℃, 18.8 ℃, 21.6 ℃ and 26.4 ℃, respectively, with the thermal inertia factors being 1.0, 1.5, 2.0, 3.0. And, finally, we have gained the simulation results of different packaging materials and packaging sizes of self-accelerat- ing decomposition temperature of 70% H202 in terms of the knetic data. Thus, it can be concluded that the packaging thickness has had minor impacts on the self-accelerating decompos

关 键 词：关键词 安全工程 热稳定性 70%H2O2 热分解 绝热条件 自加速分 解温度 

分 类 号：X937[环境科学与工程—安全科学]