Mobile Equipment for Green Treatment of Liquid-solid Fuel Air Explosive

被引：0
|
作者：
Zheng Z.-S. [1 ]
Hu B.-C. [1 ]
机构：
[1] School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing
来源：
Hanneng Cailiao/Chinese Journal of Energetic Materials | 2020年 / 28卷 / 08期
关键词：
Green treatment equipment; Isopropyl nitrate; Liquid-solid FAE; Magnesium powder; Mobile;
D O I：
10.11943/CJEM2019225
中图分类号：
学科分类号：
摘要：
Aiming at the disposal of waste liquid-solid Fuel Air Explosive(FAE) composed of isopropyl nitrate and magnesium powder, a physical separation method was proposed to separate magnesium powder from isopropyl nitrate and to recycle metal magnesium powder, and then the isopropyl nitrate was converted into non-explosive isopropanol by chemical hydrolysis and was recycled. The impact sensitivity and friction sensitivity of liquid-solid FAE were tested, and the separation effects of liquid-solid FAE by various methods, i.e., gravity filtration, decompression filtration, pressure filtration, centrifugal filtration, were studied. The results show that the liquid-solid FAE has a strong ability to bear the impact of collision and friction during the separation, and the separation of liquid-olid FAE by centrifugal filtration has advantages of fast speed and high safety. The scale-up process for hydrolysis of isopropyl nitrate were studied and the hydrolysis conditions of isopropyl nitrate were determined: V(isopropyl nitrate):V(water)=1:3, n(isopropyl nitrate):n(NaOH)=1:1.1, reaction temperature at 150℃, reaction time of 30 min. On this basis, the process flow, unit devices, structure and technical parameters of the mobile equipment for treating the liquid-solid FAE were proposed, and the treatment equipment was developed accordingly. The test results of the equipment are shown as follows: after centrifugal filtration process of 2.6 kg liquid-solid FAE for 3 min, the content of isopropyl nitrate in magnesium powder is 0.69%, which indicates the liquid-solid separation effect is perfect; after hydrolysis process of 15 kg isopropyl nitrate for 30 minutes, the conversion rate of isopropyl nitrate reaches 99.4%, which indicates the hydrolysis of isopropyl nitrate completes thoroughly. © 2020, Editorial Board of Chinese Journal of Energetic Materials. All right reserved.
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页码：786 / 791
页数：5
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