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Synthetic method of emulsifier SP-80 for emulsion explosive

A technology of SP-80 and emulsified explosives, which is applied to non-explosive/non-thermal agent components, explosives, offensive equipment, etc., can solve problems such as inaccurate temperature control, insufficient product purity, and slow heating rate, and achieve dispersibility and storage Good stability and less dosage

Active Publication Date: 2013-02-06
GEZHOUBA YIPULI HUBEI CHANGTAI CIVIL EXPLOSIVE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] (1) The temperature control is not accurate during the material reaction process, and the heating rate is slow;
[0006] (2) The efficiency of the vacuum pump is not high, the pumping rate is low, and the vacuum degree cannot meet the production requirements;
[0007] (3) After the reaction, the cooling effect of the material is poor, and the product impurities cannot be completely separated, and the product purity is not enough;
[0008] (4) The stirring speed of the reactor is low, which affects the uniformity of the material reaction

Method used

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  • Synthetic method of emulsifier SP-80 for emulsion explosive

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Such as figure 1 Shown, a kind of synthetic method of emulsion explosive emulsifier SP-80, this synthetic method comprises the following steps:

[0027] 1) Put 13kg of sorbitol with a mass concentration of 70% and catalyst phosphoric acid in a vacuum state (vacuum degree is -0.075 ~ 0.085 MPa), and undergo etherification reaction at 120°C. The reaction time is 70 minutes to generate anhydrous sorbitan ;

[0028] 2) Mix anhydrous sorbitan, oleic acid warmed to 120°C, and a basic catalyst evenly, and perform an esterification reaction at 180°C in a vacuum state (vacuum degree is -0.075 to 0.085 MPa), and the reaction time is 3.5 hours. Produce the primary product of emulsifier SP-80 for emulsion explosives;

[0029] 3) The primary product of emulsifier SP-80 for emulsified explosives is separated by adding antioxidants for precipitation, and after the HLB value adjustment step, the finished product of emulsifier SP-80 for emulsified explosives is produced.

[0030] The...

Embodiment 2

[0034] Such as figure 1 Shown, a kind of synthetic method of emulsion explosive emulsifier SP-80, this synthetic method comprises the following steps:

[0035] 1) Put 13kg of sorbitol with a mass concentration of 70% and catalyst phosphorous acid in a vacuum state (vacuum degree is -0.075 ~ 0.085 MPa), and an etherification reaction occurs at 125°C. The reaction time is 50 minutes, and anhydrous sorbitol is produced. anhydride;

[0036] 2) Mix anhydrous sorbitan, oleic acid warmed to 125°C, and a basic catalyst evenly, and perform esterification reaction at 200°C in a vacuum state (vacuum degree is -0.075 to 0.085 MPa), and the reaction time is 5 hours. Produce the primary product of emulsifier SP-80 for emulsion explosives;

[0037] 3) The primary product of emulsifier SP-80 for emulsified explosives is separated by adding antioxidants for precipitation, and after the HLB value adjustment step, the finished product of emulsifier SP-80 for emulsified explosives is produced. ...

Embodiment 3

[0042] Such as figure 1 Shown, a kind of synthetic method of emulsion explosive emulsifier SP-80, this synthetic method comprises the following steps:

[0043]1) Put 13 kg of sorbitol with a mass concentration of 70% and the catalyst p-toluenesulfonic acid in a vacuum state (vacuum degree is -0.075 ~ 0.085 MPa), and an etherification reaction occurs at 100 ° C. The reaction time is 80 minutes, resulting in dehydration Sorbitan;

[0044] 2) Mix anhydrous sorbitan, oleic acid warmed to 100°C, and a basic catalyst evenly, and perform an esterification reaction at 220°C in a vacuum state (vacuum degree is -0.075 to 0.085 MPa), and the reaction time is 4.5 hours. Produce the primary product of emulsifier SP-80 for emulsion explosives;

[0045] 3) The primary product of emulsifier SP-80 for emulsified explosives is separated by adding antioxidants for precipitation, and after the HLB value adjustment step, the finished product of emulsifier SP-80 for emulsified explosives is produ...

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Abstract

The invention discloses a synthetic method of an emulsifier SP-80 for an emulsion explosive. The synthetic method comprises the following steps: 1) etherifying sorbitol and a catalyst for 50-90 minutes at the temperature of 100-150 DEG C in a vacuum state to generate sorbitan anhydride; and 2) uniformly mixing the sorbitan anhydride, oleic acid and the basic catalyst, and esterifying for 2-5 hours at the temperature of 170-220 DEG C to generate the emulsifier SP-80 for the emulsion explosive as an early finished product. According to the synthetic method of the emulsifier SP-80 for the emulsion explosive, the problem of producing the SP-80 by a one-step method can be solved, the emulsifier SP-80 with excellent quality can be continuously and quickly produced by adopting a two-step method, and the produced emulsifier is higher in viscosity and is higher in hydroxyl value.

Description

technical field [0001] The invention relates to a method for synthesizing an emulsifier, in particular to a method for synthesizing an emulsifier SP-80 for emulsion explosives. Background technique [0002] For more than 30 years since the domestic research and development of emulsion explosives, SP-80 has been used as an emulsifier for emulsion explosives for a long time and is a key component of emulsion explosives. The quality of SP-80 emulsifier directly affects the performance of emulsion explosives. At present, there are many SP-80 emulsifier manufacturers in my country. Although the name of the emulsifier is the same, due to the different materials and processes during the reaction, the components of the reaction product are quite different, resulting in unstable performance of the produced emulsified explosive and a general storage period. In about 5 months, the sp-80 emulsifier produced by some manufacturers will cause a large number of explosives to decay rapidly d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C06B23/00
Inventor 黄正华刘秋荣
Owner GEZHOUBA YIPULI HUBEI CHANGTAI CIVIL EXPLOSIVE
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