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Emulsified oil for coal mine hydraulic support and preparation method thereof

A coal mine hydraulic and emulsified oil technology, applied in the petroleum industry, lubricating composition and other directions, can solve the problems of filter blockage, large emulsified oil particle size, affecting the safety of coal mine production, etc., and achieves strong permeability and good lubrication performance. Effect

Inactive Publication Date: 2015-01-14
JIAOZUO GUANGJU MINING PROD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Chinese patent 201210573778.2 discloses a concentrated solution for coal mine hydraulic support and its preparation method. The emulsified oil freezing point recorded in the patent literature can reach about -30°C, which can meet the requirements of cold regions, but in extremely cold regions (the ambient temperature reaches -40°C), improper storage or use will lead to problems with various indicators of the emulsified oil, affect the service life of the hydraulic support, and even affect the safety of coal mine production
[0006] Moreover, the filter particle size of some high-end hydraulic supports is generally 25 μm, and the existing emulsified oil has a large particle size, which is easy to cause filter blockage, which in turn affects the service life of the hydraulic support

Method used

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  • Emulsified oil for coal mine hydraulic support and preparation method thereof
  • Emulsified oil for coal mine hydraulic support and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] An emulsified oil for coal mine hydraulic supports, made of the following raw materials in parts by weight: 3000 parts by weight of water, 200 parts of sodium hydroxide, 300 parts of EDTA, 200 parts of naphthenic acid, 100 parts of phosphoric acid ester, 50 parts of sodium nitrite, 200 parts of triethanolamine, and benzene Triazole 5, A-110 emulsifier 150, glycerin 2000, urea 1500.

[0016] Add water to the reaction kettle, then add sodium hydroxide and EDTA, stir fully to dissolve sodium hydroxide and EDTA completely, then add naphthenic acid, phosphoric acid ester, sodium nitrite, triethanolamine, phenylhydrazine triazole and stir to 70°C until completely dissolved, finally add A-110 emulsifier, glycerin, urea, stir until completely transparent.

[0017] The particle size of the obtained emulsified oil is 111nm, which cannot be detected on the BT-90 nanometer laser particle size distribution analyzer after emulsification.

Embodiment 2

[0019] An emulsified oil for coal mine hydraulic supports, made of the following raw materials in parts by weight: water 2500, sodium hydroxide 150, EDTA 250, naphthenic acid 150, phosphate ester 50, sodium nitrite 20, triethanolamine 150, benzo Triazole 1, A-110 emulsifier 100, glycerin 1500, urea 1000.

[0020] Add water to the reaction kettle, then add sodium hydroxide and EDTA, stir fully to dissolve sodium hydroxide and EDTA completely, then add naphthenic acid, phosphoric acid ester, sodium nitrite, triethanolamine, phenylhydrazine triazole and stir to 70°C until completely dissolved, finally add A-110 emulsifier, glycerin, urea, stir until completely transparent.

[0021] The particle size of the obtained emulsified oil is 111nm, which cannot be detected on the BT-90 nanometer laser particle size distribution analyzer after emulsification.

Embodiment 3

[0023] An emulsified oil for coal mine hydraulic supports, made of the following raw materials in parts by weight: water 2852, sodium hydroxide 177, EDTA 289, naphthenic acid 185, phosphate ester 86, sodium nitrite 39, triethanolamine 174, benzo Triazole 4, A-110 emulsifier 145, glycerin 1731, urea 1355.

[0024] Add water to the reaction kettle, then add sodium hydroxide and EDTA, stir fully to dissolve sodium hydroxide and EDTA completely, then add naphthenic acid, phosphoric acid ester, sodium nitrite, triethanolamine, phenylhydrazine triazole and stir to 70°C until completely dissolved, finally add A-110 emulsifier, glycerin, urea, stir until completely transparent.

[0025] The emulsified oil particle diameter that obtains is 111nm, detects on the BT-90 nanometer laser particle size distribution instrument after emulsification, obtains as follows figure 1 The particle size distribution diagram of the emulsified oil shown has strong permeability and will not block the fil...

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Abstract

The invention discloses an emulsified oil for a coal mine hydraulic support and a preparation method thereof. The emulsified oil is prepared from the following raw materials in parts by weight: 2500-3000 parts of water, 150-200 parts of sodium hydroxide, 250-300 parts of EDTA (ethylene diamine tetraacetic acid), 150-200 parts of naphthenic acid, 50-100 parts of phosphate, 20-50 parts of sodium nitrite, 150-200 parts of triethanolamine, 1-5 parts of benzotriazole, 100-150 parts of A-110 emulgator, 1500-2000 parts of glycerinum, and 1000-1500 parts of urea. Compared with the prior art, the emulsified oil has the following advantages: the condensation point of the emulsified oil can meet the climate requirement of severely cold areas, so that the quality of the emulsified oil is prevented from being affected by improper storage or use; the antirust performance of the emulsified oil is 15 times that of the national standard; the lubricating performance is better; the grain size of the emulsified oil is small, and after being emulsified, the emulsified oil cannot be detected by a BT-90 nanometer laser particle size distribution instrument; the emulsified oil has strong permeability, does not block a filter screen, and is an ideal preferred product for high-end hydraulic supports.

Description

technical field [0001] The invention relates to an emulsified oil for coal mine hydraulic supports and a preparation method thereof. Background technique [0002] Hydraulic support is a structure used to control coal mine pressure in coal mining face. Mining face mine pressure acts on the hydraulic support in the form of external load. Hydraulic support emulsified oil is suitable for the power transmission medium of coal mine hydraulic support, single hydraulic prop, hydraulic electric furnace and other systems, which can effectively protect the hydraulic system and prolong its service life. [0003] The national standards of emulsified oil for hydraulic supports are as follows: freezing point: ≤-5°C, rust resistance: 10~35°C, 24h, lubricity (PB value): ≥392, kinematic viscosity (40°C): ≤100cst, open Flash point: ≥110°C. [0004] At present, although the existing emulsified oil for hydraulic supports on the market can meet the national standard, the market has higher and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10M173/02C10N40/08
Inventor 刘拥军
Owner JIAOZUO GUANGJU MINING PROD
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