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Emulsification device and method for safely preparing emulsion matrix

A technology of latex matrix and emulsification device, which is applied in the direction of offensive equipment, explosives processing equipment, explosives, etc., can solve the problems of affecting continuous production, small grinding channel gap, and poor safety, so as to facilitate maintenance and cleaning and production continuity Good, high production safety effect

Inactive Publication Date: 2013-03-20
NANJING UNIV OF SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The second is the colloid mill that can realize continuous emulsification. Although the quality of the prepared latex matrix is ​​good, the disadvantages are small output, high energy consumption, small channel gap of the mill body (0.02-0.5 mm), high speed (2000-8000 r / min), extremely poor security, and has basically been eliminated
However, this emulsification method makes the linear velocity of the fluid very small (0.1-50 cm / s), the shear force on the fluid is very small, and the prepared emulsion has a large particle size (10-20 μm). For emulsions of 10 ~ 20 μm, the required mesh size of the wire mesh is very small (more than 1000 mesh), which is not conducive to the passage of high-viscosity fluids, so it is only suitable for the emulsification of low-viscosity oil phase or water phase materials. Not suitable for the preparation of high-viscosity latex matrices
At the same time, the screen in this method is easily damaged by the action of the fluid, which affects continuous production

Method used

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  • Emulsification device and method for safely preparing emulsion matrix
  • Emulsification device and method for safely preparing emulsion matrix
  • Emulsification device and method for safely preparing emulsion matrix

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Embodiment 1

[0024] Taking the safe preparation of 100kg latex matrix as an example, the specific implementation method is as follows:

[0025] Size selection of the emulsification device of the present invention: the width of the rectangular mixing cavity channel (7-7) of the emulsification mixer (7) is 1 mm, the height is 1 mm, and every two slope structures form a unit pool with a length of 1.5 mm , the number of unit cells in the channel is 5; the inner diameter of the lumen of the emulsification delay mixer (9) is 1 cm, the length is 0.5 m, and a honeycomb wire mesh is built in.

[0026] Selection of initial emulsification raw materials: prefabricated water-phase emulsified raw materials containing 64wt% ammonium nitrate, 10wt% sodium nitrate, and 20wt% water, with crystallization point of 49±1°C and system temperature of 52±2°C; prefabricated 4wt% industrial compound Wax, 2wt% sorbitan monooleate (Span-80) oil phase emulsification raw material, the system temperature is 52±2℃. The p...

Embodiment 2

[0030] Taking the safe preparation of 1000 kg latex matrix as an example, the specific implementation method is as follows:

[0031] Size selection of the emulsification device of the present invention: the width of the rectangular mixing cavity channel (7-7) of the emulsification mixer (7) is 5 mm, the height is 5 mm, and every two slope structures form a unit pool with a length of 20 mm , the number of unit cells in the channel is 10; the lumen inner diameter of the emulsification delay mixer (9) is 8 cm, the length is 2.5 m, and there are built-in honeycomb-shaped glass cullets.

[0032] Selection of initial emulsification raw materials: prefabricated water-phase emulsified raw materials containing 74wt% ammonium nitrate, 10wt% sodium nitrate, and 10wt% water, with a crystallization point of 82±1°C and a system temperature of 88±2°C; prefabricated 4wt% industrial compound Wax, 2wt% sorbitan monooleate (Span-80) oil phase emulsification raw material, the system temperatu...

Embodiment 3

[0036] Taking the safe preparation of 10000 kg latex matrix as an example, the specific implementation method is as follows:

[0037] Size selection of the emulsification device of the present invention: the width of the rectangular mixing cavity channel (7-7) of the emulsification mixer (7) is 10 mm, the height is 10 mm, and every two slope structures form a unit pool with a length of 30 mm , the number of unit cells in the channel is 20; the inner diameter of the lumen of the emulsification delay mixer (9) is 15 cm, the length is 5 m, and the built-in honeycomb ceramic particles.

[0038] Selection of initial emulsification raw materials: prefabricated water-phase emulsified raw materials containing 70wt% ammonium nitrate, 10wt% sodium nitrate and 14wt% water, with a crystallization point of 63±1°C and a system temperature of 70±2°C; prefabricated 4wt% industrial compound Wax, 2wt% sorbitan monooleate (Span-80) oil phase emulsification raw material, the system temperature is...

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Abstract

The invention relates to an emulsification device for safely preparing an emulsion matrix, which comprises a water-phase emulsification material transfer pump, a water-phase emulsification material transfer pipe, an oil-phase emulsification material transfer pump and an oil-phase emulsification material transfer pipe, wherein the water-phase emulsification material transfer pump and the water-phase emulsification material transfer pipe are connected; and the oil-phase emulsification material transfer pump and the oil-phase emulsification material transfer pipe are connected. The emulsification device is characterized by further comprising an emulsification mixer with a slope-shaped rectangular mixing cavity channel, an emulsification mixture transfer pipe, an emulsification time delay mixer with a built-in honeycombed filling material mixing pipe cavity and an emulsion matrix finished product discharge pipe, wherein the water-phase emulsification material transfer pipe and the oil-phase emulsification material transfer pipe are respectively connected with a water-phase emulsification material inlet cavity and an oil-phase emulsification material inlet cavity of the emulsification mixer; and the emulsification mixer, the emulsification mixture transfer pipe, the emulsification time delay mixer and the emulsion matrix finished product discharge pipe are sequentially connected. According to the emulsification method provided by the invention, two-phase emulsification materials are subjected to primary emulsification of the emulsification mixer and secondary emulsification of the emulsification time delay mixer, thus obtaining the emulsion matrix finished product. The invention has the advantages of high safety, good emulsification quality, high production efficiency and the like.

Description

technical field [0001] The invention relates to emulsification equipment for preparing latex matrix in the field of chemical industry, in particular to an emulsification device and method for safely preparing latex matrix. Background technique [0002] Emulsion explosives are currently the most widely used industrial explosives in my country. In 2011, the total output of emulsion explosives reached 2.45 million tons, accounting for 60.2% of the total output of industrial explosives in my country. Latex matrix is ​​the main raw material for the preparation of emulsion explosives. It is a W / O colloid composed of a water-phase raw material oxidant and an oil-phase raw material reducing agent. Due to the close contact between the oxidizing agent and the reducing agent, it has a great risk of explosion. At present, in the industrial production of emulsion explosives, safety accidents occur frequently and cause serious losses due to the outdated equipment and methods for preparing...

Claims

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Application Information

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IPC IPC(8): C06B21/00C06B31/28
Inventor 钱华徐森王凯刘大斌李长红李雪菲
Owner NANJING UNIV OF SCI & TECH
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