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2,4-二硝基氯苯的合成工艺过程热风险性分析

作者:时间:2020-07-28点击数:

全文下载:    202004007.pdf


文章编号: 1672-6987202004-0052-05 DOI 10.16351/j.1672-6987.2020.04.007


翟皓宇, 王少猛, 谢传欣*

(青岛科技大学 环境与安全工程学院,山东 青岛 266042


摘要: 利用快速筛选仪和绝热量热仪测试2,4-二硝基氯苯的热力学参数,并通过动力学软件模拟获得最大反应速率到达时间(TMRad),利用反应量热仪对2,4-二硝基氯苯合成工艺过程进行量热实验,并通过计算获得绝热温升和失控体系可能达到的最高温度(MTSR),将工艺操作温度(Tp)、技术最高温度(MTT)、反应物料分解温度(TD24)以反应失控温度(MTSR)4个数据进行比较,确定风险等级。结果表明:2,4-二硝基氯苯的起始分解温度为300 .49 ℃,分解反应结束温度为418 .31 ℃,放热量为1 431 .59 J&middot;g-1,分解放热量大,潜在爆炸危险性高;硝化工艺的反应安全风险等级为:Tp<MTSR<MTT<TD24,可以确定工艺反应过程的反应安全风险等级为2级,根据风险等级,提出建议措施。

关键词: 2,4-二硝基氯苯; 反应焓; 传热; 动态仿真; 过程控制

中图分类号: X 937文献标志码: A

引用格式: 翟皓宇, 王少猛, 谢传欣. 2,4-二硝基氯苯的合成工艺过程热风险性分析\[J\]. 青岛科技大学学报(自然科学版), 2020 414): 52-56.

ZHAI Haoyu, WANG Shaomeng XIE Chuanxin. Analysis of thermal risk in the process of synthesis of 24-dinitrochlorobenzene\[J\]. Journal of Qingdao University of Science and TechnologyNatural Science Edition), 2020 414): 52-56.

 


Analysis of Thermal Risk in the Process of Synthesis of 24-DinitrochlorobenzeneZHAI Haoyu, WANG Shaomeng XIE Chuanxin

 

(College of Environment and Safety Engineering, Qingdao University of Science and Technology,Qingdao 266042, China)Abstract: The thermodynamic parameters of 2,4-dinitrochlorobenzene were measured by rapid screening instrument and adiabatic calorimeter, and the calorimetric experiments on the synthesis process of 2,4-dinitrochlorobenzene were carried out by TMRad, using reaction calorimeter. The maximum temperature of adiabatic temperature rise and runaway system can be obtained by calculation. MTSR is used to calculate the operating temperature of the process. The highest temperature of Tp, MTT, reaction material decomposition temperature TD24 was compared with the four data of reaction out of control temperature and MTSR, to determine the risk grade. The results show that the initial decomposition temperature is 300 .49 , the final decomposition temperature is 418 .31 , the heat emission is 1 431 .59 J&middot;g-1, the partial liberation heat is large, and the potential explosion risk is high. The reaction safety risk level of nitrification process is Tp<MTSR<MTT<TD24. It can be determined that the reaction safety risk level of the process is 2. According to the risk level, the paper puts forward the suggested measures.

Key words: 2,4-dinitrochlorobenzene; enthalpy; heat transfer; dynamic simulation; process control



收稿日期:  2019-07-12

基金项目: 国家重点研发计划专项资助项目(2017YFC0804800.

作者简介: 翟皓宇(1994—),,硕士研究生.*通信联系人.


 

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