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A method for the renewable utilization of waste single-base propellants

A single-base propellant and waste technology, which is applied in the direction of a single substance as explosives, explosives, explosives processing equipment, etc., can solve problems such as explosion accidents, excessive solvent consumption, and environmental pollution, and achieve high economic value.

Active Publication Date: 2021-06-25
ZHONGBEI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Before the mid-1980s, destruction methods such as open burning, ocean dumping, and deep well injection were mainly used, which not only caused waste of resources, but also caused environmental pollution and explosion accidents
For single-base drugs, the method of separation and extraction is mainly used. This method consumes more solvents and the process is more complicated.

Method used

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  • A method for the renewable utilization of waste single-base propellants
  • A method for the renewable utilization of waste single-base propellants
  • A method for the renewable utilization of waste single-base propellants

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] A method for reusing waste single-base propellants, comprising the following steps:

[0037] 5.7mL of ethyl acetate and 114.3mL of ethanol (volume ratio of 1:20) were configured as a mixed solution, and then the waste single-based propellant was dissolved in the mixed solution of ethyl acetate and ethanol, and the temperature was 35°C in a water bath Ultrasonic treatment is carried out in the medium to fully swell the waste single-base propellant.

[0038] The waste and old single-base propellant after swelling is filtered, and the hydrazine hydrate reducing agent is added in the waste and old single-base propellant after filtering and swelling to carry out reduction reaction: at first 15g concentration is that 80% hydrazine hydrate is dissolved in 105g industrial ethanol (mass concentration is 10%) was preheated to 35°C, then the preheated hydrazine hydrate-ethanol solution was added to the reaction container filled with 60g of waste single-base propellants (the molar ...

Embodiment 2

[0044] A method for reusing waste single-base propellants, comprising the following steps:

[0045] 5.7mL of ethyl acetate and 114.3mL of ethanol (volume ratio of 1:20) were configured as a mixed solution, and then the waste single-based propellant was dissolved in the mixed solution of ethyl acetate and ethanol, and the temperature was 38°C. Ultrasonic treatment to fully swell the waste single-base propellant.

[0046] Carry out the reduction reaction of the waste single-base propellant after swelling under the effect of hydrazine hydrate reducing agent: firstly, 37.5g concentration is that 80% hydrazine hydrate is dissolved in 82.5g ethanol (mass concentration is 25%) and preheated to 40 ℃, then Add the preheated hydrazine hydrate-ethanol solution into the reaction container containing 60 g of swollen waste single-base propellant (the molar ratio of the swollen waste single-base propellant to hydrazine hydrate is about 1:11), and the reaction system Heat to 43°C while stirr...

Embodiment 3

[0050] A method for reusing waste single-base propellants, comprising the following steps:

[0051] 5.7mL of ethyl acetate and 114.3mL of ethanol (volume ratio of 1:20) were configured as a mixed solution, and then the waste single-based propellant was dissolved in the mixed solution of ethyl acetate and ethanol, and the temperature was 40°C. Ultrasonic treatment to fully swell the waste single-base propellant.

[0052] Carry out reduction reaction under the effect of hydrazine hydrate reductant to the spent single-base propellant after swelling: first 60g concentration is that hydrazine hydrate of 80% is dissolved in 60g water (mass concentration is 40%) preheating to 45 ℃, then Add the preheated hydrazine hydrate-ethanol solution into a reaction vessel containing 60 g of swollen waste single-base propellant, heat the reaction system to 45°C while stirring to keep the reaction system at a uniform temperature, and react for 32 minutes.

[0053] The reduced product is separate...

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Abstract

The invention relates to the field of reutilization and manufacture of waste single-base propellants, in particular to a recyclable method for waste single-base propellants. Waste single-base medicines are flammable and explosive. At present, methods such as burial and burning are often used for destruction, which restricts the recycling of waste propellants. The present invention controllably obtains nitrocellulose with different nitrogen content by reducing the single-base propellant mainly composed of nitrocellulose, and uses the method for recycling waste single-base propellants. The invention relates to (1) the reduction process of hydrazine hydrate to the single-base propellant; (2) the control of the nitrogen content of nitrocellulose in the single-base propellant by the reduction process; (3) the reduction process of thiourea dioxide to the nitrocellulose in the single-base propellant . Through the reduction treatment of the nitrate ester group in the single-base propellant, the nitrogen content of the nitrocellulose is controlled, and the waste single-base medicine is swollen, reduced, and regenerated to recycle the waste single-base medicine and broaden the use of the waste single-base medicine. application field.

Description

technical field [0001] The invention relates to the field of reutilization and manufacture of waste single-base propellants, in particular to a recyclable method for waste single-base propellants. Background technique [0002] Explosives have a certain service life. Solid propellant-single-base propellant is a kind of propellant. When the life of single-base propellant reaches the end of its life, its stability and safety will deteriorate, and it will be more dangerous and harmful to the environment. A source of pollution. [0003] Disposal of waste propellants and explosives is a complex, costly and dangerous project. Before the mid-1980s, open-air burning, ocean dumping, deep well injection and other destruction methods were mainly used, which not only caused waste of resources, but also caused environmental pollution and explosion accidents. [0004] At present, my country mainly adopts two methods for the disposal of waste explosives. (1) Conventional destruction techn...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C06B21/00C06B49/00C06D5/04
CPCC06B21/0091C06B49/00C06D5/04
Inventor 肖忠良南风强李世影张瑞米登峰申通和尚杰吴晓青
Owner ZHONGBEI UNIV
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