Primary explosive crystallization system based on segmented flow

A technology of crystallization system and priming charge, which is applied in the direction of explosives, explosives processing equipment, offensive equipment, etc., can solve the problem that the synthesis method cannot detect the combination of equipment, cannot obtain the crystallization kinetic information of the priming charge online, and there is no research on the mechanism of the crystallization process of the priming charge. Substantial progress and other issues have been achieved to achieve the effects of shortening the residence time, lowering the cost and reducing the risk

Inactive Publication Date: 2019-01-04
NANJING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, due to the use of a batch reactor, the conventional synthesis method cannot be combined with the detection equipment, and the crystallization kinetic information of the primer in the reaction system cannot be obtained online, so that the research on the mechanism of the crystallization process of the primer has not been substantive. sexual progress

Method used

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  • Primary explosive crystallization system based on segmented flow
  • Primary explosive crystallization system based on segmented flow
  • Primary explosive crystallization system based on segmented flow

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] Example 1: Preparation and crystallization observation of crystalline lead trinitroresorcinol

[0051] Prepare 10 mL of magnesium stephenate solution of 0.1 mol / L, adjust the pH value to 4.0, 10 mL of 0.15 mol / L lead nitrate solution, adjust the pH value to 4.0, and place the two reaction solutions in syringe 6 and syringe 7, by The computer set the injection rate to 0.15mL / min; take 20mL of n-tetradecane and place it in the 20mL syringe 5, and set the injection rate to 0.3mL / min by the computer. The heating temperature of the water bath was 65°C. Turn on the continuous phase carrier liquid injection pump, and turn on the reaction liquid drive pump after the fluid flow is stable. The micro-mixer adopts a micro-mixing unit, and the reaction liquid is mixed quickly and evenly. After the fluid passes through the T-shaped connector, a droplet with a uniform shape is formed, and a chemical reaction occurs in the droplet, and the droplet enters the crystallization device to...

Embodiment 2

[0052] Embodiment 2: the preparation of crystalline barium trinitroresorcinate

[0053] Prepare 10 mL of magnesium stephenate solution of 0.15 mol / L, adjust the pH value to 4.5, 10 mL of barium nitrate solution of 0.15 mol / L, adjust the pH value to 5.0, and place two kinds of reaction solutions in syringe 6 and syringe 7, by The computer set the injection rate to 0.1mL / min; take 20mL of n-tetradecane and place it in the 20mL syringe 5, and set the injection rate to 0.2mL / min by the computer. The heating temperature of the water bath is 70°C. Turn on the continuous phase carrier liquid injection pump, and turn on the reaction liquid drive pump after the fluid flow is stable. The micro-mixer adopts a micro-mixing unit, and the reaction liquid is mixed quickly and evenly. After the fluid passes through the T-shaped connector, a droplet with a uniform shape is formed, and a chemical reaction occurs in the droplet, and the droplet enters the crystallization device to produce bari...

Embodiment 3

[0054] Embodiment 3: the preparation of carboxymethyl cellulose lead azide

[0055] The preparation mass fraction is 5% sodium azide solution 10mL, adjusts the pH value to 9.0, the mass fraction 15% lead acetate solution 10mL, adjusts the pH value to 5.5, and two kinds of reaction solutions are placed in syringe 6 and syringe 7, Prepare a sodium carboxymethylcellulose solution with a mass fraction of 0.1% and place it in the syringe 8, set the injection rate to 0.1mL / min by the computer; take 20mL of n-octadecane and place it in the 20mL syringe 5, set the injection rate by the computer The rate was 0.2 mL / min. The heating temperature of the water bath was 35°C. Turn on the continuous phase carrier liquid injection pump, and turn on the reaction liquid drive pump after the fluid flow is stable. The micro-mixer adopts a micro-mixing unit, and the reaction liquid is mixed quickly and evenly. After the fluid passes through the T-shaped connector, a droplet with a uniform shape...

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Abstract

The invention discloses a primary explosive crystallization system based on segmented flow. The system comprises a computer control unit, a fluid driving unit, a micromixer, a synthesis and crystallization unit, a micro-observing system and a connecting assembly. Continuous phase loading liquid in an injector is driven by a computer control passage injecting pump to flow to a T-shaped connector through a flexible tube, the injecting pump is controlled to drive reflection liquid and an additive or an impurity solution in the injector to be collected and flow to the micromixer through a flexibletube, after thorough mixing, the mixture flows to the T-shaped connector to form liquid drops in uniform shapes, and the liquid drops flow to the synthesis and crystallization device with flowing ofthe fluid; the micro-observing system comprises a microscope and a connecting line connected with the computer control unit, the microscope is controlled by a computer to shoot the growing conditionsof crystal at different positions, the growing conditions of the crystal can be conveniently studied, and the crystal quality can be conveniently adjusted.

Description

technical field [0001] The invention relates to the field of pyrotechnics and detonating devices, in particular to a detonating powder crystallization system. Background technique [0002] The primary explosive is a kind of sensitive explosive that is easily excited by external energy to deflagrate or explode, and can quickly form a detonation. It is highly sensitive to external excitation energy such as heat, electricity, light, and machinery, and can output enough energy to detonate high explosives with detonation waves. [0003] The crystal form, crystal size and particle size distribution range of the primary explosive product have a direct impact on the dispersion performance of the pyrotechnics charge, thus affecting the charge performance of the pyrotechnics. At the same time, it also has an important impact on its sensitivity, detonation power and other explosive properties and stability. The primary explosive crystal products with regular crystal shape and uniform...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C06B21/00
CPCC06B21/00
Inventor 朱朋赵双飞杨用侯刚陈楷徐聪沈瑞琪叶迎华夏唤明
Owner NANJING UNIV OF SCI & TECH
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