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Method for extracting ammonium perchlorate in scrapped four-component HTPB propellant through ultrasonic assistance

A technology of ultrasonic-assisted extraction and ammonium perchlorate, which is applied in the direction of perchloric acid, perchlorate, chemical instruments and methods, etc., can solve the problems of unstable chemical properties, poor swelling of propellant, general extraction effect, etc., and achieve The operation method is simple and easy, the swelling is difficult to solve, and the effect of safe and efficient extraction

Active Publication Date: 2019-07-02
中国人民解放军32181部队
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are the following deficiencies: one is that the swelling property of water to the propellant is very poor, and the extraction rate is low; 3 Such as extremely volatile, highly toxic, chemically unstable, easily photochemical substances, and even carcinogenic substances, which are extremely harmful to health

Method used

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  • Method for extracting ammonium perchlorate in scrapped four-component HTPB propellant through ultrasonic assistance
  • Method for extracting ammonium perchlorate in scrapped four-component HTPB propellant through ultrasonic assistance
  • Method for extracting ammonium perchlorate in scrapped four-component HTPB propellant through ultrasonic assistance

Examples

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Effect test

Embodiment 1

[0026] A method for ultrasonically assisted extraction of ammonium perchlorate in scrapped four-component HTPB propellant, comprising the following steps: safely crushing the four-component HTPB propellant, the initial size of the broken propellant sample is 10mm×5mm×3mm; Put the propellant in the Erlenmeyer flask, add petroleum ether, soak for 3 minutes, wash with ultrasonic power of 720W for 3 minutes, and wash 3 times. After cleaning, 5g of the propellant was soaked and swelled in 90ml of a mixed solution of water: absolute ethanol: petroleum ether with a volume ratio of 1:1:1 for 24 hours, and the temperature of the solution was 33°C. Then suction filtration, after cleaning the swollen propellant particles with distilled water, add distilled water, the mass ratio of propellant to distilled water is 1:10, and add the sodium dodecylbenzenesulfonate surface active agent that accounts for 1% of the mass fraction of distilled water. Stir on a constant temperature magnetic stirr...

Embodiment 2

[0029] A method for ultrasonically assisted extraction of ammonium perchlorate in scrapped four-component HTPB propellant, comprising the steps of: safely crushing the four-component HTPB propellant, the size of the broken propellant sample is less than 4mm; placing 10g of the propellant in a cone In a shaped bottle, add petroleum ether, soak for 3 minutes, and clean with an ultrasonic power of 720W for 3 minutes for 3 times. After cleaning, the propellant is soaked and swelled for 10 hours in 180ml of a mixed solution of water: absolute ethanol: petroleum ether with a volume ratio of 1:1:1, and the temperature of the solution is 48°C. Then suction filtration, after cleaning the swollen propellant particles with distilled water, add distilled water, the mass ratio of propellant to distilled water is 1:10, and add the sodium dodecylbenzenesulfonate surface active agent that accounts for 1% of the mass fraction of distilled water. Stir on a constant temperature magnetic stirrer ...

Embodiment 3

[0035]A method for ultrasonically assisted extraction of ammonium perchlorate in scrapped four-component HTPB propellant, comprising the steps of: safely crushing the four-component HTPB propellant, the size of the broken propellant sample is less than 4mm; placing 5g of the propellant in a cone In a shaped bottle, add petroleum ether, soak for 3 minutes, and clean with an ultrasonic power of 720W for 3 minutes for 3 times. After cleaning, 5g of the propellant was soaked and swelled for 12 hours in 90ml of a mixed solution of water: absolute ethanol: petroleum ether with a volume ratio of 1:1:1, and the temperature of the solution was 41°C. Then suction filter, wash the swollen propellant particles with distilled water, add distilled water, the mass ratio of propellant to distilled water is 1:15, add 1.5% sodium dodecylbenzenesulfonate surfactant, and the rotating speed is 500r It was stirred on a constant temperature magnetic stirrer for 1 hour, then soaked and extracted for ...

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Abstract

The invention discloses a method for extracting ammonium perchlorate in scrapped four-component HTPB propellant through ultrasonic assistance, and relates to the technical field of scrapped propellantcomponent recovery. The method comprises the following steps: (1) crushing a propellant; (2) soaking and swelling the propellant at 33-48 DEG C in a mixed solution of water, anhydrous ethanol and petroleum ether according to the volume ratio of 1:1:1 for 10-24 h; (3) then performing suction filtration of the mixed solution, adding distilled water to the propellant, wherein the mass ratio of the propellant to the distilled water is 1:(10-15), then adding sodium dodecyl benzene sulfonate accounting for 1-1.5 wt% of the distilled water, carrying out stirring extraction for 1-3 hours and soakingextraction for 1-3 hours, and finally extracting the mixed solution in 720-960 W ultrasonic wave for 1-3 hours, wherein the water temperature in the extraction process is 48 DEG C; and (4) after extraction, carrying out suction filtration on the mixed solution, mixing and swelling the mixed solution and the filtrate obtained after extraction, and carrying out secondary filtration and evaporative crystallization to obtain ammonium perchlorate. The method has the advantages of high extraction rate of ammonium perchlorate, rapidness in extraction, safety, environmental protection and low cost. Common reagents and instruments are needed in the method, and the operation method is simple and easy to implement and suitable for large-scale application.

Description

technical field [0001] The invention relates to the technical field of recovery of scrapped propellant components, in particular to a method for ultrasonically assisted extraction of ammonium perchlorate in scrapped four-component HTPB propellant. Background technique [0002] Ammonium perchlorate is a commonly used oxidizing agent and has a wide range of applications in many energetic materials. In the national defense industry, it is used to produce propellant and other explosives, and it is used to produce engraving agent and anti-hail agent for civilian use. It is active and will explode when mixed with reducing agents, combustibles and metal powders. It is easily soluble in water and can be recycled by water dissolution. [0003] Solid propellants play an extremely important role in the military field. As a power source for engines, solid propellants can significantly improve weapon survivability and operational capabilities. Among all kinds of solid propellants, the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B11/18
CPCC01B11/185C01P2006/80
Inventor 黄伟佳陈明华安振涛姜志保王彬王韶光
Owner 中国人民解放军32181部队
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