Waste HMX and TNT mixed explosive recovery method

A technology of Otti explosives and recovery method, applied in chemical instruments and methods, preparation of organic compounds, organic chemistry, etc., can solve problems such as incomplete separation, and achieve the effects of improving safety, improving performance and avoiding cracks

Inactive Publication Date: 2015-01-28
GANSU YINGUANG CHEM IND GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the method is simple and easy to operate, the separation is not complete, and a certain component separated entrains another component.

Method used

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  • Waste HMX and TNT mixed explosive recovery method
  • Waste HMX and TNT mixed explosive recovery method
  • Waste HMX and TNT mixed explosive recovery method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] figure 1 It is intended to illustrate the method in detail, not to limit the scope of the present invention.

[0047]Taking HMX / TNT 70 / 30 waste Otti explosives as an example to recycle them on two 300L jacketed heat exchange reactors and some necessary supporting equipment platforms.

[0048] The TNT in the spent Otti explosives was dissolved in the excess of solvent benzene, and then the solid-phase-HMX and liquid-phase-benzene-unsaturated solutions of TNT were separated. The solid phase is washed with benzene, suction filtered, and then washed with water, suction filtered, and dried to obtain the HMX product; the liquid phase and the above-mentioned benzene washing mother liquor are firstly distilled off part of the benzene by simple distillation, and then the crystallization method is combined by cooling and adding water. , crystallize TNT, and then filter, wash with water, filter with suction, and dry to obtain crystalline granular TNT products.

[0049] The speci...

Embodiment 2

[0060] Taking HMX / TNT 70 / 30 waste Otti explosives as an example to recycle them on two 300L jacketed heat exchange reactors and some necessary supporting equipment platforms.

[0061] Using xylene as a solvent, the TNT in the spent Otti explosives was dissolved under the condition of excessive xylene, and then the solid-phase-HMX and liquid-phase-TNT unsaturated xylene solutions were separated. The solid phase is washed with xylene, suction filtered, then washed with water, suction filtered, and dried to obtain the HMX product; the liquid phase and the above-mentioned xylene washing mother liquor are firstly distilled out part of xylene by simple distillation, and then combined by cooling and adding water In the crystallization method, the TNT crystals are precipitated, and then filtered, washed with water, suction filtered, and dried to obtain a crystalline granular TNT product.

[0062] The specific process and operation steps are briefly described as follows:

[0063] 1) A...

Embodiment 3

[0073] figure 1 , image 3 It is intended to illustrate the method in detail, not to limit the scope of the present invention.

[0074] The solubility of HMX in toluene is very small (almost insoluble), while TNT is easily soluble in toluene. The solubility data of TNT in toluene is shown in the figure. figure 1 . From image 3 It can be seen that the solubility of TNT in toluene is very large, and the purpose of separation is achieved by utilizing the contrast of the solubility of the two components in the same solvent.

[0075] Taking HMX / TNT 70 / 30 waste Otti explosives as an example to recycle them on two 300L jacketed heat exchange reactors and some necessary supporting equipment platforms.

[0076] Using toluene as a solvent, the TNT in the waste Otti explosive was dissolved under the condition of excessive toluene, and then the solid phase-HMX and the liquid phase-TNT unsaturated solution of toluene were separated. The solid phase is washed with toluene, suction fil...

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Abstract

The invention discloses a waste HMX and TNT mixed explosive recovery method. The method comprises the following steps: dissolving TNT in a waste HMX and TNT mixed explosive in an excess amount of toluene as a solvent, separating a solid phase HMX and a liquid phase toluene unsaturated solution of TNT; washing the solid phase in toluene, carrying out pumping filtration, washing by using water, carrying out pumping filtration, and drying to obtain an HMX product; and carrying out simple distillation on the liquid phase and the above toluene washing mother liquor to steam out parts of toluene, carrying out a cooling and water addition combined crystallization process to precipitate TNT crystals, filtering, washing the crystals by water, carrying out pumping filtration, and drying to obtain a crystallized granular TNT product. The total yield of the recovery treatment is 98.55%; and the method has the advantages of simple process, few species of used materials, complete recycling of the used solvent toluene, basic reuse of washing water, and realizing of energy saving and clean production.

Description

technical field [0001] The invention belongs to the technical field of energetic materials, and relates to a method for processing and recovering components of waste energetic materials, in particular to a method for processing and recovering TNT and HMX by using an organic solvent extraction method for mixed explosives containing TNT and HMX. Background technique [0002] Energetic material is a metastable substance with high energy density and high instantaneous power. It is an important chemical energy source, but it also has strong destructive power. It is increasingly used in national economic construction. Energetic materials are also called explosives in some places, including explosives, propellants, propellants, pyrotechnic agents, and pyrotechnic charges. Abandoned explosives are expired and scrapped explosives. The instability, unsafety and toxicity of abandoned explosives have posed a greater threat to human beings and the environment. Compared with domestic an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D257/02C07C205/06C07C201/16
CPCC07D257/02C07C201/16C07C205/06
Inventor 余咸旱张克武陈少华惠书珍
Owner GANSU YINGUANG CHEM IND GRP CO LTD
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