Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Rapid processing method of isopropyl nitrate, and applications thereof

A technology of isopropyl nitrate and treatment method, which is applied in the field of safe treatment of nitrate ester energetic materials, can solve the problems of undisclosed safe treatment methods of isopropyl nitrate energetic materials, etc., and achieve increased reaction rate and removal rate , the effect of simple reaction conditions

Active Publication Date: 2017-05-10
NO 63908 TROOPS PLA
View PDF3 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The prior art does not disclose the safe handling method of isopropyl nitrate energetic material

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Rapid processing method of isopropyl nitrate, and applications thereof
  • Rapid processing method of isopropyl nitrate, and applications thereof
  • Rapid processing method of isopropyl nitrate, and applications thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-16

[0021] Prepare 150mL sodium sulfide solutions of different concentrations, add them to a constant temperature water bath, raise the temperature to the corresponding temperature, then adjust the pH value, add 5mL isopropyl nitrate, and start the reaction. Take 10 mL of the reaction product at 25 min, 50 min, 75 min, and 8 h of reaction, extract with 10 mL of diethyl ether, analyze the extraction phase by gas chromatography, and calculate the removal rate of isopropyl nitrate.

[0022] The concentration of sodium sulfide solution, reaction temperature, reaction pH value and removal rate of isopropyl nitrate in each embodiment are shown in Table 1 below.

[0023]

[0024] As can be seen from Table 1, the preferred reaction conditions of isopropyl nitrate and excessive sodium sulfide reaction are:

[0025] A sodium sulfide aqueous solution with a concentration of 0.1-0.2 mol / L is used, the pH of the reaction solution is controlled to be 6-14, and the temperature is 50-70°C. In...

Embodiment 17-20

[0029] Prepare 150mL of sodium sulfide solution with a concentration of 0.2mol / L, add it to the reaction kettle, raise the temperature to 70°C, adjust the pH value to 10, add 5mL of isopropyl nitrate to be decomposed, and add a corresponding amount of catalyst to start the reaction.

[0030] The amount that adds catalyst among the embodiment 17-20 is respectively 1%, 3%, 5%, 7% of isopropyl nitrate molar weight, does not add dodecyl pyridinium chloride in comparative example, considers the effect of catalyst with this Quantitative effect on the reaction. At 5min, 15min, 25min, 35min, and 4h of the reaction, 10mL of the reaction product was taken, extracted with 10mL of ether, and the extraction phase was analyzed by gas chromatography to determine the removal rate of isopropyl nitrate. By comparison, the influence of the catalyst on the reaction was determined. Table 2 is the test results. figure 1 A plot of the rate constants measured for different experimental reactions. ...

Embodiment 21-24

[0037] With reference to embodiment 17-20, in embodiment 21-24, control the reaction temperature of sodium sulfide aqueous solution and isopropyl nitrate to be 60 ℃, the amount of adding catalyst is 5% of isopropyl nitrate molar weight, all the other reaction control conditions and The removal rate of isopropyl nitrate measured in different time periods is shown in Table 3 below.

[0038]

[0039] From the comparison of the removal rate of isopropyl nitrate in Table 3 and Table 1, it can be seen that the catalyst dodecylpyridinium chloride catalyzes the reaction of sodium sulfide aqueous solution and isopropyl nitrate, which can significantly improve the reaction rate constant and obtain a large amount of nitrate in a relatively short period of time. High removal rate of isopropyl nitrate.

[0040] The invention also discloses the application of the above method, which is applied to the scrap treatment of weapons and ammunition containing isopropyl nitrate. For example, fo...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention belongs to the technical field of safety disposal of nitric acid ester energetic materials, and more specifically discloses a rapid processing method of isopropyl nitrate, and applications thereof. The rapid processing method comprises following steps: isopropyl nitrate or an aqueous solution of isopropyl nitrate is mixed with an excess sodium sulfide solution for reaction; catalyst dodecylpyridinium chloride is added to catalyze reduction reaction of isopropyl nitrate, wherein the molar amount of the added catalyst accounts for 1 to 7% of that of isopropyl nitrate. The rapid processing method can be used for scrap disposition of arms and ammunition containing isopropyl nitrate, is capable of realizing rapid deenergization decomposition processing of isopropyl nitrate, and is short in time consuming, high in removing rate; control conditions are simple; operation is convenient; and safety is high.

Description

technical field [0001] The invention relates to the technical field of safe processing of nitrate ester energetic materials. Background technique [0002] Isopropyl nitrate is a kind of energetic material of nitrates, which has a wide range of applications in national defense, medicine, industry and so on. Its sensitivity is low, and it will cause combustion and explosion when it encounters open flame and high heat. Slightly soluble in water, highly volatile and toxic, harmful to human body after inhalation, oral administration or skin absorption. In terms of national defense, isopropyl nitrate, as an energetic material, has been widely used in related weapons and ammunition. When the equipped weapons and ammunition are decommissioned, scrapped or unqualified, they need to be safely and quickly de-energyd and decomposed in a timely manner. Cloud bomb is a new type of ammunition that has been equipped in large quantities. Isopropyl nitrate is the main component of its warhe...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C02F1/70
CPCC02F1/70C02F2101/34C02F2101/38
Inventor 陈永康陈明华王恒闯葛强安振涛王韶光张力
Owner NO 63908 TROOPS PLA
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com