Nitrite-free concentrated solution for rapidly biodegrading mine prop and preparation method

A biodegradation and nitrite technology, applied in the field of application and maintenance of mining machinery, can solve the problems of reducing anti-rust performance and groundwater pollution, and achieve the effect of excellent lubricating performance and good lubricating performance.

Active Publication Date: 2015-04-22
QUAKER CHEM CHINA
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  • Claims
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Problems solved by technology

[0005] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a concentrated solution for fast biodegradable mine supports without nitrite, which aims to solve the problem of long-term and continuous pollution of underground water systems in coal mine production areas by the liquid used for mine supports. At the same time, without reducing its anti-rust performance

Method used

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  • Nitrite-free concentrated solution for rapidly biodegrading mine prop and preparation method
  • Nitrite-free concentrated solution for rapidly biodegrading mine prop and preparation method

Examples

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preparation example Construction

[0029] The preparation method of the antirust agent package is as follows: fully mix the organic acid and the alcohol amine compound in a suitable container and heat it to 145-160° C., maintain the temperature condition and fully stir the reaction for 1.5 to 2.0 hours to carry out the amidation reaction.

[0030] The preparation method of the nitrite-free rapid biodegradable mine support concentrate of the present invention comprises the steps of: adding part of soft water to the prepared antirust agent package, so that the antirust agent package and soft water are evenly mixed to obtain a homogeneous antirust agent Rust agent package solution, and cooled to 50±5°C, add benzotriazole as a non-ferrous metal anti-corrosion agent into the rust preventive package solution, stir fully to dissolve the benzotriazole solid in the rust preventive package solution; Then add successively C16-C18 unsaturated alcohol polyoxyethylene ether carboxylic acid as ionic surfactant, isotridecanyl p...

Embodiment 1

[0032] Embodiment 1: Concentrate solution for quick biodegradable mine support without nitrite, in terms of mass percentage, the concentrate solution consists of the following components:

[0033] Anti-rust agent package: n-capric acid 5%, sebacic acid 2%, oleic acid 2%, 21 carbon dimer acid 2%, monoethanolamine 3.5%, diethanolamine 2.5%, monoisopropanolamine 2%, Diethylene glycol amine 2%;

[0034] Other additive components: benzotriazole 0.5%, C16-C18 unsaturated alcohol polyoxyethylene ether carboxylic acid 0.5%, isotridecanyl polyoxyethylene ether 0.8%, polyoxypropylene polyoxyethylene copolymer 3%, Organic modified siloxane 0.1%, the balance is soft water. The polyoxypropylene-polyoxyethylene copolymer has a weight-average molecular weight of 80,000-120,000, and can be a linear random copolymer, a block copolymer or an alternating copolymer. This type of polymer polyether additive has multiple coordinated oxygen atoms, which can be more effectively combined with the met...

Embodiment 2

[0037] Embodiment 2: Concentrate solution for quick biodegradable mine support without nitrite, by mass percentage, the concentrate solution consists of the following components:

[0038] Antirust agent package: n-octanoic acid 6%, n-dodecanedioic acid 2%, oleic acid 2%, 21 carbon dimer acid 2%, monoethanolamine 4.5%, diethanolamine 3%, monoisopropanolamine 2 %, diglycolamine 2%;

[0039] Other additive components: benzotriazole 0.5%, C16-C18 unsaturated alcohol polyoxyethylene ether carboxylic acid 0.5%, isotridecanyl polyoxyethylene ether 0.9%, polyoxypropylene polyoxyethylene copolymer 5%, Organic modified siloxane 0.12%, the balance is soft water. The polyoxypropylene-polyoxyethylene copolymer has a weight-average molecular weight of 80,000-120,000, and can be a linear random copolymer, a block copolymer or an alternating copolymer.

[0040] All chemical additives in this example are commercially available.

[0041] The specific steps of the preparation method are as fo...

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Abstract

The invention discloses a nitrite-free concentrated solution for rapidly biodegrading a mine prop and belongs to the field of mine machine application and maintenance. The concentrated solution comprises, by mass, 21% to 25% of an antirust agent packet obtained through an amidation reaction of an organic acidic compound and an alcohol amine compound, 0.5% to 0.7% of benzotriazole, 0.5% to 0.6% of an ionic surfactant, 0.8% to 0.9% of nonionic surfactant, 3% to 5% of a lubricant agent, 0.1% to 0.12% of a defoaming agent, and the balance soft water. According to the antirust agent packet, the organic acidic compound is the composition of three or more of C8-C12 monobasic saturated fatty acids, C10-C12 binary saturated fatty acids, C12-C18 unsaturated fatty acids and C18-C22 dimer acids and must contain the C18-C22 dimer acids, and the alcohol amine compound is the composition of three or more of monoethanolamine, diethanol amine, monoisopropanolamine and diglycolamine; the alcohol amine compound is excessive in the antirust agent packet.

Description

technical field [0001] The invention relates to a nitrite-free concentrated solution for fast biodegradable mine supports in the field of application and maintenance of mining machinery and a preparation method. Background technique [0002] Mine hydraulic support is widely used in comprehensive mechanized coal mining face of coal mine. Its working fluid is high water content hydraulic fluid obtained by diluting emulsified oil or concentrated liquid with water. The currently used mine support fluid products have the following disadvantages: usually contain nitrite as an anti-rust agent, and this chemical substance will be converted into a carcinogen; the biodegradation rate is low, causing long-term impact on the groundwater environment in the mining area. [0003] Therefore, in order to replace the nitrite in the mine support fluid, some studies have adopted the following methods: 1. Use other inorganic salts with anti-rust effect, such as silicate, molybdate and borate, et...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M173/02C10M161/00C10M133/16C10N40/08C10N30/06C10N30/12C10N30/18
Inventor 刘红山李晓燕李果莉
Owner QUAKER CHEM CHINA
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