中国炼油与石油化工 ›› 2013, Vol. 15 ›› Issue (1): 40-48.

• Scientific Research • 上一篇    下一篇

丙烷一步氧化制丙烯酸工艺中气体燃爆性分析

周轶,刘振翼,刘彧,段在鹏,钱新明   

  1. 北京理工大学
  • 收稿日期:2012-07-05 修回日期:2012-08-14 出版日期:2013-03-30 发布日期:2013-03-30
  • 通讯作者: 刘振翼 E-mail:zhenyiliu@bit.edu.cn
  • 基金资助:
    国家科技支撑计划

Flammability and Explosion Property of Gases in the Process of Propane Oxidation to Acrylic Acid in One Step

  • Received:2012-07-05 Revised:2012-08-14 Online:2013-03-30 Published:2013-03-30

摘要: 为了研究丙烷一步氧化制丙烯酸工艺若干重要环节气体的燃爆性,文章对循环压缩机出口、反应器入口和出口混合气的爆炸极限和安全氧含量进行了理论估算,并实验测试了三个环节气体的爆炸极限、安全氧含量和惰化极限。理论计算和实验测试表明,循环压缩机出口和反应器出口气体在爆炸极限和安全氧含量两个方面都无燃爆可能,惰化极限实验进一步证明其安全性;反应器入口气体中由于C3H6和O2的含量均比较高,混合气有燃爆可能,但体系中大量的惰性组分很好的抑制了混合气的燃爆。经分析,三个环节混合气均不会发生燃爆现象,但对反应器入口气体需加强气体成分及浓度的监测,加强温度、压力的控制。此实验结果可为类似丙烷氧化工艺安全提供借鉴。

关键词: 丙烯酸, 丙烷氧化, 燃爆性, 爆炸极限, 安全氧含量

Abstract: Acrylic acid is widely used in industries of different scopes. One of the production methods of it is propane oxidation to acrylic acid in one step. In order to study the flammability and explosion property of gases during the process, explosion limits and safety oxygen content of gases in circulating compressor outlet, reactor entrance and exit were theoretically calculated and experimentally tested. Finally, inert limit were also tested. It showed that gases in circulating compressor outlet and reactor exit were nonflammable in three aspects: explosion limits, safety oxygen content and inert limit. C3H6 and O2 were higher in reactor entrance, which made the mixed gases easy be ignited. But the large amount of inert gases suppressed explosion effectively. As a conclusion, no explosion phenomenon will happen in all the three sections. But gases in reactor entrance are most dangerous, where more supervision on the content and concentration of gases and more control on the temperature and pressure should be taken. Besides this, open flame, hot surfaces and other sources of ignition are forbidden in working spaces. The experimental results can be used for similar oxidation process of propane.

Key words: acrylic acid, propane oxidation, flammability and explosion, explosion limits, safety oxygen content