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A method and device for evaluating the emulsification effect of an emulsifier for emulsion explosives

A technology of emulsified explosives and extrusion devices, which is applied in the field of evaluation of the emulsification effect of emulsifiers, to achieve the effect of small dose, high reliability and low price

Active Publication Date: 2016-01-20
SHANXI TOND CHEMICAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, current detection methods cannot understand the damage to the emulsified matrix system by this process
[0010] From the above analysis, it can be seen that there are many problems in the current evaluation methods of the stability of the emulsification matrix, so there are corresponding problems in investigating the stability of the emulsification matrix by these methods and then inferring the pros and cons of the emulsifier.

Method used

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  • A method and device for evaluating the emulsification effect of an emulsifier for emulsion explosives
  • A method and device for evaluating the emulsification effect of an emulsifier for emulsion explosives
  • A method and device for evaluating the emulsification effect of an emulsifier for emulsion explosives

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The structure of the emulsification effect evaluation device is as follows: figure 1 As shown, it consists of three parts: bracket, extrusion device and pneumatic mechanism. The pneumatic mechanism includes an air source, an air pump 6 fixed above the bracket 1 and an air pipe 7 for connecting the air source and the air pump, and an air pump starting and running direction adjustment switch 2 and a pressure gauge 5 are arranged on the air pipe 7 . The extruding device is composed of extruding tank 3 and extruding rod 4. There is a small hole in the middle of the bottom of the extruding tank 3, which is detachably installed on the bracket 1. The connector 8 of the hole, one end of the extruding rod 4 is fixed on the air pump 6, and the other end is located above the extruding tank 3, driven by the air pump 6, and moves up and down in the extruding tank.

Embodiment 2

[0024] Using the emulsification effect evaluation device of Example 1, the emulsification effects of three commercially available emulsifiers were evaluated by the emulsification effect evaluation method of the present invention. Wherein, emulsifier A is T152 emulsifier produced by Changzhou Cambridge Chemical Plant, emulsifier B is 2727B emulsifier produced by Lubrizol, and emulsifier C is T152 emulsifier produced by Shanxi Yongji Hongyuan Chemical Plant.

[0025] According to the following ratio, use each emulsifier to prepare 300g emulsification base for evaluation test: 73.5wt% ammonium nitrate, 20wt% water, 1.5wt% emulsifier, 5wt% 32# machine oil.

[0026] Mix ammonium nitrate and water under heating conditions to form a water phase, and control the temperature of the water phase to 80°C.

[0027] Mix the emulsifier with 32# mechanical oil, heat and melt to form an oil phase, control the temperature of the oil phase to 50°C, and keep it warm in a water bath.

[0028] Add...

Embodiment 3

[0041] Using the emulsification matrix formula and emulsification conditions in Example 2, 0# diesel oil was used instead of 32# mechanical oil, and the obtained emulsification matrix was repeatedly squeezed 15 times, and the hole diameter of the squeeze tank connector was 1 mm. The test conditions are shown in Table 4.

[0042]

[0043] The obtained results show that the emulsifying effect of the emulsifier is B>C>A, which is consistent with the result of Example 2.

[0044] Its natural storage conditions are shown in Table 5.

[0045]

[0046] According to this emulsification formula, the experiment was carried out on the emulsified explosive production line, and then the emulsified matrix was repeatedly pumped 15 times with a screw pump, and the pumping pressure was 0.15MPa. This result was compared with the situation after extrusion using the emulsification effect evaluation device, and the results are shown in Table 6.

[0047]

[0048] The comparison results s...

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Abstract

The invention discloses a method for evaluating emulsification effects of emulsifiers for emulsion explosives. The method comprises the steps as follows: emulsion bases of the emulsion explosives are prepared with different emulsifiers in the same composition ratio, the quantitative emulsion bases are contained in an extrusion tank with a small hole in the bottom, extruded out of the small hole in the bottom of the extrusion tank with constant pressure, placed in an open container, placed in quantitative water for a certain period and taken out, and the emulsification effects of the emulsifiers are evaluated according to the content of free ammonium nitrate in the water, and the lower the content of the free ammonium nitrate is, the better the emulsification effects of the emulsifiers are. With the adoption of the method, performance differences of the different emulsifiers can be compared quickly, evaluation results are consistent with results of a natural storage method, the credibility is high, meanwhile, actual production pumping processes of the emulsion bases can be simulated, and effects caused by the pumping processes on the emulsion bases can be understood relatively accurately.

Description

technical field [0001] The invention relates to a method for evaluating the emulsification effect of an emulsifier, in particular to a method for evaluating the emulsification effect of an emulsifier for emulsion explosives, and a device used in the evaluation method. Background technique [0002] Emulsion explosive is a thermodynamically unstable system with a highly dispersed phase developed on the theory of emulsion stability. breast phenomenon. Emulsifier is an important component for forming emulsion explosives and keeping them stable. The quality of emulsifying explosives directly affects the quality of emulsifying explosives. [0003] For the detection of the emulsification effect of emulsifiers, there is generally a problem of poor guidance of the test results. Some physical and chemical indicators of the emulsifier product itself, such as the hydroxyl value and saponification value of span-80, the alkali value and nitrogen content of polyisobutylene succinimide, e...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N33/00
Inventor 全慧锋倪欧琪张凯铭俞珍权胡海滨
Owner SHANXI TOND CHEMICAL CO LTD
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