Efficient environment-friendly hydraulic support concentrated solution and preparation method thereof

Abstract

The invention discloses a high-efficiency environment-friendly hydraulic support concentrated solution and a preparation method thereof. The high-efficiency environment-friendly hydraulic support concentrated solution comprises the following components: benzotriazole, ethylene glycol, EDTA (Ethylene Diamine Tetraacetic Acid), potassium hydroxide, triethanolamine, water-soluble polyester, self-emulsifying ester and water. The invention further provides a preparation method of the efficient environment-friendly hydraulic support concentrated solution. The method comprises the following steps: firstly, mixing benzotriazole and ethylene glycol in proportion to form a component A, and then mixing and dissolving EDTA (Ethylene Diamine Tetraacetic Acid) and a 5% potassium hydroxide aqueous solution in proportion to form a component B; the preparation method comprises the following steps: adding the component A and the component B into a kettle, adding water into the kettle in proportion, adding triethanolamine while stirring, sequentially adding the water-soluble polyester and the self-emulsifying ester into the kettle, finally adding the component A and the component B, and continuously stirring until the mixture is transparent to prepare the high-efficiency environment-friendly hydraulic support concentrated solution. The hydraulic support concentrated solution prepared by the invention is efficient, environment-friendly, pollution-free and harmless to a human body, and also has the characteristics of simple and easily available raw materials, low cost and the like.

Description

Technical Field

[0001] The invention relates to a transmission medium concentrate for a hydraulic support in the chemical industry and a preparation method thereof, and in particular to a high-efficiency and environment-friendly hydraulic support concentrate and a preparation method thereof. Background Art

[0002] Hydraulic support is a structure used to control the mine pressure of coal mining working face. Hydraulic support fluid, as the working medium of hydraulic support, not only plays the role of power transmission, but also plays the role of lubrication, cooling, corrosion prevention and rust prevention.

[0003] So far, the transmission medium used in coal mine hydraulic supports is mostly emulsified oil for hydraulic supports. This emulsified oil is made of refined mineral oil as the main raw material and other additives. It consumes a lot of petroleum resources and has high costs. Moreover, since the emulsified oil for hydraulic supports is directly discharged underground after use, it causes a lot of oil pollution to seriously pollute the underground environment.

[0004] In addition, water-based media containing sodium nitrite are also used as transmission fluids. Since they contain sodium nitrite, it is carcinogenic to the human body and will endanger the health of underground workers. Summary of the invention

[0005] The purpose of the present invention is to provide a concentrated liquid for hydraulic support transmission medium and a preparation method thereof, which can solve the existing problems. The obtained hydraulic support concentrated liquid is efficient, environmentally friendly, pollution-free, environmentally friendly, harmless to the human body, and also has the characteristics of simple and easy-to-obtain raw materials and low cost.

[0006] In order to achieve the above-mentioned purpose, the present invention provides a high-efficiency and environmentally friendly hydraulic support concentrate, wherein the components of the hydraulic support concentrate include: benzotriazole, ethylene glycol, EDTA, potassium hydroxide, triethanolamine, water-soluble polymer ester, self-emulsifying ester, and water.

[0007] The above-mentioned high-efficiency and environmentally friendly hydraulic support concentrated liquid, wherein, among the components of the hydraulic support concentrated liquid, potassium hydroxide is a potassium hydroxide aqueous solution with a mass concentration of 5%.

[0008] The above-mentioned high-efficiency and environmentally friendly hydraulic support concentrate, wherein the components of the hydraulic support concentrate include, by weight: 0.4-0.6 parts of benzotriazole, 10-12 parts of ethylene glycol, 0.5-1 parts of EDTA, 8-10 parts of potassium hydroxide, 4-6 parts of triethanolamine, 5-7 parts of water-soluble polymer ester, and 0.5-1.2 parts of self-emulsifying ester.

[0009] The above-mentioned high-efficiency and environmentally friendly hydraulic support concentrate, wherein the hydraulic support concentrate is added with water to make 100 parts by weight.

[0010] The above-mentioned high-efficiency and environmentally friendly hydraulic support concentrate, wherein the hydraulic support concentrate, calculated by mass percentage, contains: 0.5% benzotriazole, 10-11% ethylene glycol, 0.5-1% EDTA, 10% potassium hydroxide, 4-6% triethanolamine, 5-6% water-soluble polymer ester, 0.5-1% self-emulsifying ester, and the balance is water.

[0011] The present invention also provides a method for preparing the above-mentioned high-efficiency and environmentally friendly hydraulic support concentrate, wherein the method comprises: step 1, mixing benzotriazole and ethylene glycol in proportion to form component A; step 2, mixing EDTA and a potassium oxide aqueous solution with a mass concentration of 5% to dissolve in proportion, stirring evenly, to form component B; step 3, adding water in proportion to a reactor, adding triethanolamine under stirring conditions, and then adding water-soluble polymer ester and self-emulsifying ester to the reactor in sequence; step 4, adding component A and component B to the reactor, continuously stirring until they become transparent, to obtain a high-efficiency and environmentally friendly hydraulic support concentrate, and adjusting the concentration to be suitable for different water qualities when used.

[0012] The method for preparing the above-mentioned high-efficiency and environmentally friendly hydraulic support concentrate, wherein the hydraulic support concentrate prepared by the method has a mass concentration of 1.5% for water with a hardness of 500 ppm.

[0013] The method for preparing the above-mentioned high-efficiency and environmentally friendly hydraulic support concentrate, wherein the hydraulic support concentrate prepared by the method has a mass concentration of 2.0% for water with a hardness of 750ppm.

[0014] The high-efficiency and environment-friendly hydraulic support concentrate and the preparation method thereof provided by the present invention have the following advantages:

[0015] The products made according to the present invention have all indicators that meet the MT / T76-2011 standard. Through concentration adjustment, it can be applied to different water qualities, has a wide range of applications, strong stability, and the raw materials are common and easy to obtain. It can reduce the difficulty and cost of handling hydraulic fluids, and achieve the purpose of efficient lubrication. In addition, the present invention does not use additives that are harmful to the human body or the environment, is green and environmentally friendly, has no pollution in ingredients, and is harmless to the human body. This solves the problems of poor stability, high cost, lack of raw materials, etc. of emulsified oil, and the problem that the use of water-based media containing components such as sodium nitrite as transmission fluid has a carcinogenic effect on the human body and endangers the health of underground workers. DETAILED DESCRIPTION

[0016] The specific embodiments of the present invention are further described below.

[0017] The invention provides a high-efficiency and environment-friendly hydraulic support concentrate, which comprises the following components: benzotriazole, ethylene glycol, EDTA (ethylenediaminetetraacetic acid), potassium hydroxide (KOH), triethanolamine, water-soluble polymer ester, self-emulsifying ester, and water.

[0018] Water-soluble polymer ester is water-soluble polyester, which is polyester that can be dissolved in a certain temperature and a certain amount of water. It is generally made by adding modified components during the synthesis of ordinary polyester to make it soluble in (hot) water.

[0019] Self-emulsifying ester is a self-emulsifying ester product. Due to the special design of its molecular structure, it can spontaneously form an emulsion after adding water. The special structure of self-emulsifying ester can form a uniform dispersion system in water.

[0020] Preferably, in the components of the hydraulic support concentrate, potassium hydroxide is a potassium hydroxide aqueous solution with a mass concentration of 5%.

[0021] More preferably, the components of the hydraulic support concentrate include, by weight: 0.4-0.6 parts of benzotriazole, 10-12 parts of ethylene glycol, 0.5-1 parts of EDTA, 8-10 parts of potassium hydroxide, 4-6 parts of triethanolamine, 5-7 parts of water-soluble polymer ester, and 0.5-1.2 parts of self-emulsifying ester.

[0022] The hydraulic support concentrate is prepared by adding water to 100 parts by weight.

[0023] Most preferably, the hydraulic support concentrate comprises, by mass percentage, 0.5% benzotriazole, 10-11% ethylene glycol, 0.5-1% EDTA, 10% potassium hydroxide, 4-6% triethanolamine, 5-6% water-soluble polymer ester, 0.5-1% self-emulsifying ester, and the balance is water.

[0024] The present invention also provides a preparation method of the high-efficiency and environment-friendly hydraulic support concentrate, which comprises: step 1, mixing benzotriazole and ethylene glycol in proportion to form component A; step 2, mixing EDTA and a potassium oxide aqueous solution with a mass concentration of 5% to dissolve in proportion, stirring evenly, to form component B; step 3, adding water in proportion to a reactor, adding triethanolamine under stirring conditions, and then sequentially adding water-soluble polymer ester and self-emulsifying ester to the reactor; step 4, adding component A and component B to the reactor, continuously stirring until they become transparent, to obtain a high-efficiency and environment-friendly hydraulic support concentrate, and adjusting the concentration to be suitable for different water qualities when in use.

[0025] Preferably, the hydraulic support concentrate prepared by the method has a mass concentration of 1.5% for water with a hardness of 500 ppm.

[0026] Preferably, the hydraulic support concentrate prepared by the method has a mass concentration of 2.0% for water with a hardness of 750 ppm.

[0027] The equipment used in the present invention and other process conditions and parameters are known to those skilled in the art.

[0028] The following is a further description of the high-efficiency and environment-friendly hydraulic support concentrate and its preparation method provided by the present invention in conjunction with the embodiments.

[0029] Example 1

[0030] A high-efficiency and environment-friendly hydraulic support concentrate comprises the following ingredients: benzotriazole, ethylene glycol, EDTA, potassium hydroxide, triethanolamine, water-soluble polymer ester, self-emulsifying ester and water.

[0031] Each raw material complies with the corresponding national standards.

[0032] Preferably, in the components of the hydraulic support concentrate, potassium hydroxide is a potassium hydroxide aqueous solution with a mass concentration of 5%.

[0033] More preferably, the components of the hydraulic support concentrate include, by weight: 0.4 parts of benzotriazole, 10.5 parts of ethylene glycol, 0.6 parts of EDTA, 8 parts of potassium hydroxide, 5 parts of triethanolamine, 5.5 parts of water-soluble polymer ester, and 0.8 parts of self-emulsifying ester.

[0034] Most preferably, the hydraulic support concentrate is diluted with water to 100 parts by weight.

[0035] Example 2

[0036] A high-efficiency and environment-friendly hydraulic support concentrate comprises the following ingredients: benzotriazole, ethylene glycol, EDTA, potassium hydroxide, triethanolamine, water-soluble polymer ester, self-emulsifying ester and water.

[0037] Each raw material complies with the corresponding national standards.

[0038] Preferably, in the components of the hydraulic support concentrate, potassium hydroxide is a potassium hydroxide aqueous solution with a mass concentration of 5%.

[0039] More preferably, the components of the hydraulic support concentrate include, by weight: 0.6 parts of benzotriazole, 12 parts of ethylene glycol, 0.8 parts of EDTA, 9 parts of potassium hydroxide, 5.5 parts of triethanolamine, 7 parts of water-soluble polymer ester, and 1.2 parts of self-emulsifying ester.

[0040] Most preferably, the hydraulic support concentrate is diluted with water to 100 parts by weight.

[0041] Example 3

[0042] A high-efficiency and environment-friendly hydraulic support concentrate comprises the following ingredients: benzotriazole, ethylene glycol, EDTA, potassium hydroxide, triethanolamine, water-soluble polymer ester, self-emulsifying ester and water.

[0043] Each raw material complies with the corresponding national standards.

[0044] Preferably, in the components of the hydraulic support concentrate, potassium hydroxide is a potassium hydroxide aqueous solution with a mass concentration of 5%.

[0045] More preferably, the components of the hydraulic support concentrate, by mass percentage, include: 0.5% benzotriazole, 10% ethylene glycol, 0.5% EDTA, 10% potassium hydroxide, 4% triethanolamine, 5% water-soluble polymer ester, 0.5% self-emulsifying ester, and the balance is water.

[0046] Example 4

[0047] A high-efficiency and environment-friendly hydraulic support concentrate comprises the following ingredients: benzotriazole, ethylene glycol, EDTA, potassium hydroxide, triethanolamine, water-soluble polymer ester, self-emulsifying ester and water.

[0048] Each raw material complies with the corresponding national standards.

[0049] Preferably, in the components of the hydraulic support concentrate, potassium hydroxide is a potassium hydroxide aqueous solution with a mass concentration of 5%.

[0050] More preferably, the components of the hydraulic support concentrate, by mass percentage, include: 0.5% benzotriazole, 11% ethylene glycol, 1% EDTA, 10% potassium hydroxide, 6% triethanolamine, 6% water-soluble polymer ester, 1% self-emulsifying ester, and the balance is water.

[0051] Example 5

[0052] A method for preparing a high-efficiency and environmentally friendly hydraulic support concentrate, the method comprising:

[0053] Step 1: Select various ingredients according to the formula ratio of Example 4, and mix benzotriazole and ethylene glycol in proportion to form component A.

[0054] Step 2, EDTA and a 5% potassium oxide aqueous solution are mixed and dissolved in proportion, and stirred evenly to form component B.

[0055] Step 3, adding water in proportion to the reaction kettle, adding triethanolamine under stirring conditions, and then sequentially adding the water-soluble polymer ester and the self-emulsifying ester into the reaction kettle.

[0056] Step 4: Add component A and component B into the reaction kettle and continue stirring until it becomes transparent to obtain a high-efficiency and environmentally friendly hydraulic support concentrate. When in use, the concentration is adjusted to be suitable for different water qualities.

[0057] Preferably, the hydraulic support concentrate prepared by the method has a mass concentration of 1.5% for water with a hardness of 500 ppm.

[0058] Preferably, the hydraulic support concentrate prepared by the method has a mass concentration of 2.0% for water with a hardness of 750 ppm.

[0059] The high-efficiency and environment-friendly hydraulic support concentrate prepared in this embodiment was used to test water with hardness of 500 ppm and 750 ppm respectively.

[0060] Through the test of Beijing Mining Institute of China Coal Research Institute, the results are shown in Table 1 below.

[0061] Table 1. Test results.

[0062]

[0063]

[0064] The invention provides a high-efficiency and environmentally friendly hydraulic support concentrate and a preparation method thereof. The obtained hydraulic support concentrate is tested by the Beijing Mining Institute of China Coal Science Research Institute, and all indicators meet the MT / T76-2011 standard. For water with a hardness of 500ppm, the concentration is 1.5%, and for water with a hardness of 750ppm, the concentration is 2.0%. The concentrate can be applied to different water qualities by adjusting the concentration. The hydraulic support concentrate also has the advantages of high efficiency and stability, green environmental protection, low cost, simple preparation method, and meets the needs of industrial large-scale production.

[0065] Although the content of the present invention has been described in detail through the above preferred embodiments, it should be appreciated that the above description should not be considered as a limitation of the present invention. After reading the above content, it will be apparent to those skilled in the art that various modifications and substitutions of the present invention will occur. Therefore, the protection scope of the present invention should be limited by the appended claims.

Claims

1. A highly efficient and environmentally friendly hydraulic support concentrate, characterized in that: The components of the hydraulic support concentrate include: benzotriazole, ethylene glycol, EDTA, potassium hydroxide, triethanolamine, water-soluble polymer ester, self-emulsifying ester and water.

2. The high-efficiency and environmentally friendly hydraulic support concentrate according to claim 1, characterized in that: Among the components of the hydraulic support concentrated liquid, potassium hydroxide is a potassium hydroxide aqueous solution with a mass concentration of 5%.

3. The high-efficiency and environmentally friendly hydraulic support concentrate according to claim 2, characterized in that: The components of the hydraulic support concentrate include, by weight: 0.4-0.6 parts of benzotriazole, 10-12 parts of ethylene glycol, 0.5-1 parts of EDTA, 8-10 parts of potassium hydroxide, 4-6 parts of triethanolamine, 5-7 parts of water-soluble polymer ester, and 0.5-1.2 parts of self-emulsifying ester.

4. The high-efficiency and environmentally friendly hydraulic support concentrate according to claim 3, characterized in that: The hydraulic support concentrate is made up to 100 parts by weight by adding water.

5. The high-efficiency and environmentally friendly hydraulic support concentrate according to claim 3, characterized in that: The hydraulic support concentrate comprises, by mass percentage, 0.5% benzotriazole, 10-11% ethylene glycol, 0.5-1% EDTA, 10% potassium hydroxide, 4-6% triethanolamine, 5-6% water-soluble polymer ester, 0.5-1% self-emulsifying ester, and the balance is water.

6. A method for preparing a high-efficiency and environmentally friendly hydraulic support concentrate as claimed in any one of claims 1 to 5, characterized in that: The method comprises: Step 1, mixing benzotriazole and ethylene glycol in proportion to form component A; Step 2, mixing and dissolving EDTA and a 5% potassium oxide aqueous solution in proportion, stirring evenly, to form component B; Step 3, adding water in proportion to the reactor, adding triethanolamine under stirring, and then sequentially adding the water-soluble polymer ester and the self-emulsifying ester to the reactor; Step 4: Add component A and component B into the reaction kettle and continue stirring until it becomes transparent to obtain a high-efficiency and environmentally friendly hydraulic support concentrate. When in use, the concentration is adjusted to be suitable for different water qualities.

7. The method for preparing the high-efficiency and environmentally friendly hydraulic support concentrate according to claim 6, characterized in that: The hydraulic support concentrate prepared by the method has a mass concentration of 1.5% for water with a hardness of 500 ppm.

8. The method for preparing the high-efficiency and environmentally friendly hydraulic support concentrate according to claim 6, characterized in that: The hydraulic support concentrate prepared by the method has a mass concentration of 2.0% for water with a hardness of 750 ppm.

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