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Application and method of hexadecyltrimethylammonium bromide in the separation of components of solid-liquid cloud explosive

A technology of cetyltrimethylammonium bromide and separation method, which is applied in the fields of blasting, organic chemistry, nitrate ester preparation, etc., and can solve the problem of high degree of wetting, inability to separate, and no separation of solid-liquid cloud explosives Recycling methods and other issues to achieve effective separation

Active Publication Date: 2020-09-22
NO 63908 TROOPS PLA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The particle size of the metal powder in the cloud explosion agent is below 100 mesh, which belongs to the coarse particle range. Theoretically, the separation and recovery can be completed by selecting methods such as centrifugation and filtration. However, due to the high degree of wetting of the metal powder and active liquid components, it is often used The method cannot effectively separate the two, and currently there is no other separation and recovery method for solid-liquid cloud explosives

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Prepare an aqueous solution with a mass fraction of cetyltrimethylammonium bromide of 0.13%, and then add the solid-liquid cloud explosive agent into the solution, and the mass ratio of the solution to the cloud explosive agent is 1:15. After the addition, stir quickly for 10 minutes to fully dissolve the isopropyl nitrate, then put the solid-liquid suspension into a centrifuge, rotate at a speed of 4000r / min for 15 minutes, and then use a vacuum filtration device to filter the solid-liquid mixture to obtain liquid and solids, and dry the solids. The respective mass changes before and after weighing the solid and liquid components by weighing method determined that the recovery rate of isopropyl nitrate was 92.58%, and the recovery rate of magnesium powder was 98.56%.

Embodiment 2

[0022] Preparation cetyltrimethylammonium bromide massfraction is the aqueous solution of 0.10%, then solid-liquid cloud explosion agent is added in the solution, the mass ratio of cloud explosion agent and cetyltrimethylammonium bromide aqueous solution It is 1:10. After the addition, stir quickly for 15 minutes to fully dissolve the isopropyl nitrate, then put the solid-liquid suspension into a centrifuge, rotate at a speed of 6000r / min for 10 minutes, and then use a vacuum filtration device to filter the solid-liquid mixture to obtain liquid and solids, and dry the solids. The respective mass changes before and after weighing the solid and liquid components by weighing method determined that the recovery rate of isopropyl nitrate was 92.44%, and the recovery rate of magnesium powder was 98.51%.

Embodiment 3

[0024] Preparation cetyltrimethylammonium bromide massfraction is the aqueous solution of 0.19%, then solid-liquid cloud explosion agent is added in the solution, the mass ratio of cloud explosion agent and cetyltrimethylammonium bromide aqueous solution for 1:20. After the addition, stir quickly for 8 minutes to fully dissolve the isopropyl nitrate, then put the solid-liquid suspension into a centrifuge, rotate at a speed of 3000r / min for 30min, and then use a vacuum filtration device to filter the solid-liquid mixture to obtain liquid and solids, and dry the solids. The respective mass changes before and after weighing the solid and liquid components by weighing method determined that the recovery rate of isopropyl nitrate was 93.16%, and the recovery rate of magnesium powder was 99.03%.

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PUM

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Abstract

The invention relates to the technical field of ammunition recovery processing, particularly discloses an application of hexadecyl trimethyl ammonium bromide to component separation of a solid-liquidfuel air explosive and further provides a component separation method of the solid-liquid fuel air explosive. According to the method, the solid-liquid fuel air explosive is added to an aqueous solution of hexadecyl trimethyl ammonium bromide, active liquid components are dissolved by stirring, an obtained solid-liquid suspension is subjected to centrifugal separation and filtration, a solid and aliquid are obtained respectively, metal powder is obtained by drying the solid, and the liquid is recovered and processed. Recovery rate of the active liquid components can reach 92% or higher, and recovery rate of the metal powder can reach 98.5% or higher.

Description

technical field [0001] The invention relates to the technical field of ammunition recovery and treatment, in particular to the application and method of cetyltrimethylammonium bromide in the separation of solid-liquid cloud explosive components. Background technique [0002] The cloud blast bomb is a new type of ammunition that uses the shock wave overpressure generated by the explosion of gasified fuel in the air to obtain large-scale killing and destruction effects. The warhead charge in the cloud blast bomb is called cloud blast agent, also known as fuel air. Explosives, wherein the commonly used cloud blasting agent is solid-liquid cloud blasting agent, and its components include metal powder (such as magnesium powder) and active liquid components (such as isopropyl nitrate). At present, a large number of cloud-explosive ammunition equipped with this type of cloud-explosive agent has reached the storage period and needs to be scrapped in time. However, there is no safe a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C201/02C07C203/04C22B26/22F42D5/04
CPCC07C201/02C22B26/22F42D5/04C07C203/04
Inventor 陈永康陈明华李玉峰姜志保王韶光安振涛过乐驹黄伟佳
Owner NO 63908 TROOPS PLA