WO2020006817A1 - 一种用于煤矿喷雾降尘的增润剂及制备方法 - Google Patents

一种用于煤矿喷雾降尘的增润剂及制备方法 Download PDF

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Publication number
WO2020006817A1
WO2020006817A1 PCT/CN2018/100451 CN2018100451W WO2020006817A1 WO 2020006817 A1 WO2020006817 A1 WO 2020006817A1 CN 2018100451 W CN2018100451 W CN 2018100451W WO 2020006817 A1 WO2020006817 A1 WO 2020006817A1
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WIPO (PCT)
Prior art keywords
lignin sulfonate
agent
water
dust
initiator
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PCT/CN2018/100451
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English (en)
French (fr)
Chinese (zh)
Inventor
周刚
丁建飞
孙健
高丹红
潘红卫
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山东科技大学
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Priority to JP2020564935A priority Critical patent/JP7050364B2/ja
Publication of WO2020006817A1 publication Critical patent/WO2020006817A1/zh

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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F289/00—Macromolecular compounds obtained by polymerising monomers on to macromolecular compounds not provided for in groups C08F251/00 - C08F287/00
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K3/00—Materials not provided for elsewhere
    • C09K3/22—Materials not provided for elsewhere for dust-laying or dust-absorbing

Definitions

  • the invention relates to the fields of dust prevention and dust suppression in mines, in particular to a moisturizing agent and a preparation method for spraying and dust reduction in coal mines.
  • Coal dust is one of the main disaster sources that seriously endangers the safety of underground production and the health of personnel.
  • the dangers of coal dust are mainly the following: First, spontaneous combustion or even explosion can occur under certain conditions, which can easily cause gas explosion accidents; The increase in the concentration of respirable dust seriously threatens the physical and mental health of workers in coal mines, which greatly increases the probability of pneumoconiosis and other lung diseases.
  • the dust in coal mines will aggravate the wear and tear of parts and components of the equipment and cause equipment Accuracy decreases or malfunctions; In addition, a large amount of dust will reduce the visibility of the well, and it is easy to cause accidents caused by misoperation.
  • the dust concentration of the fully mechanized mining face can reach more than 3000mg / m 3 , and the dust concentration of the fully mechanized mining face can reach more than 6000mg / m 3 .
  • coal mine underground mining face In order to prevent dust, coal mine underground mining face generally adopts spraying method to reduce dust.
  • water Due to the hydrophobic nature of coal body, water has poor wettability to coal dust and it is difficult to achieve ideal results.
  • the currently widely used technology is to add ready-made industrial-grade surfactants in water or to compound surfactants.
  • this method has the disadvantages of poor dust reduction effect, high cost and high toxicity, and traditional surfactants are not easy to degrade, and large-scale applications will cause secondary environmental pollution.
  • the object of the present invention is to provide a lubricating agent and a preparation method for spraying and reducing dust in coal mines, so as to reduce the degree of dust diffusion and improve the dust suppression efficiency.
  • the solution of the present invention includes:
  • a lubricating agent used for coal mine spray dust reduction which includes the following components in mass percentage:
  • the above-mentioned lignin sulfonate is one of sodium lignin sulfonate and calcium lignin sulfonate or a mixture thereof; and the initiator is one of sodium peroxide and ammonium persulfate. ;
  • the cross-linking agent is NN methylenebisacrylamide.
  • the said anti-freezing agent is calcium chloride and the corrosion inhibitor is phosphoric acid.
  • a method for preparing the above-mentioned moisturizing agent comprising the following steps:
  • Step 1 After dissolving the lignin sulfonate in water, add vinyl acetate, set the temperature of the thermostatic stirrer to 60 ° C, and stir for 30 minutes. After all the dissolution is fully mixed, add the initiator to the solution. React at 60 ° C for 2 hours to obtain a first solution;
  • step two 2-acrylamide-2-methylpropanesulfonic acid and a cross-linking agent are added to the first solution and the reaction is continued for 1 hour to obtain a final product;
  • Step 3 Add the antifreeze and corrosion inhibitor to the final product, stir well and adjust the pH value to obtain the above-mentioned wetting agent.
  • the prepared lubricating agent is sufficiently stirred and mixed with water for standby, and the lubricating agent and water are fully stirred and mixed according to a ratio of 1:50 by mass.
  • the preparation method wherein the above-mentioned lignin sulfonate is one or a mixture of sodium lignin sulfonate and calcium lignin sulfonate; the initiator is one of sodium peroxide and ammonium persulfate;
  • the cross-linking agent was NN methylenebisacrylamide.
  • the antifreeze is calcium chloride and the corrosion inhibitor is phosphoric acid.
  • the present invention provides a moisturizing agent for coal mine spray dust reduction and a preparation method thereof.
  • the strong oxidizing property of persulfuric acid is used to capture -OH hydrogen in lignin to generate primary radicals.
  • the primary radicals attack vinyl acetate and 2-propylene.
  • C C of amide-2-methylpropanesulfonic acid and NN methylenebisacrylamide.
  • the generated radicals are polymerized in an aqueous solution, and 2-acrylamide-2-methylpropanesulfonic acid and vinyl acetate are polymerized.
  • the ester is grafted onto sodium lignosulfonate.
  • the original sulfonic acid group of sodium lignin sulfonate has better adsorption performance on coal dust.
  • the amide group makes the ejected droplets have a certain adhesion to the coal dust, and the ester group makes the overall structure formed on the coal.
  • the wettability of dust is enhanced.
  • the application of this lubricant and surfactant to the spray system not only reduces the surface tension of water, but also increases the wetting and adhesion effect of the mist on the dust, so that the mist can effectively moisten the dust. Moisture, adhesion, and wrapping greatly improve dust suppression efficiency and reduce dust diffusion.
  • this lubricating agent uses sodium lignin sulfonate as a matrix, which can be naturally decomposed to avoid secondary pollution caused by dust fall.
  • FIG. 1 is a schematic diagram of a process for preparing a humectant in the present invention.
  • the present invention provides a moisturizer and a preparation method for coal mine spray dust reduction.
  • a moisturizer and a preparation method for coal mine spray dust reduction.
  • the present invention is described in further detail below. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.
  • the present invention provides a moisturizer for dust spraying in coal mines, which comprises, by mass percentage: 3% -5% lignin sulfonate, 3% -5% vinyl acetate, 3% -5% 2-acrylamide-2-methylpropanesulfonic acid, 0.05% -0.1% initiator, 0.02% -0.04% cross-linking agent, 0.3% -0.6% antifreeze, and 0.2% -0.4% corrosion inhibitor , The balance is water.
  • the above lignin sulfonate is one of sodium lignin sulfonate and calcium lignin sulfonate or a mixture thereof;
  • the initiator is one of sodium peroxide and ammonium persulfate;
  • the cross-linking agent is NN methylene Bisacrylamide.
  • the antifreeze is calcium chloride;
  • the corrosion inhibitor is phosphoric acid.
  • the present invention also provides a method for preparing the above-mentioned humectant, as shown in FIG. 1, which includes the following steps:
  • Step 1 After dissolving the lignin sulfonate in water, add vinyl acetate, set the temperature of the thermostatic stirrer to 60 ° C, and stir for 30 minutes. After all the dissolution is fully mixed, add the initiator to the solution. React at 60 ° C for 2 hours to obtain a first solution;
  • step two 2-acrylamide-2-methylpropanesulfonic acid and a crosslinking agent are added to the first solution and the reaction is continued for 1 hour to obtain a final product;
  • Step 3 Add the antifreeze and corrosion inhibitor to the final product, stir well and adjust the pH value to obtain the above-mentioned wetting agent.
  • the dust reduction efficiency using only water spray can only reach about 42-55%, the highest dust reduction rate is 56.2%, and the effect is poor.
  • the dust removal efficiency of the spraying method with the addition of the lubricant can reach more than 90%, the highest 93.5% so that the average total dust concentration and the average respirable dust concentration reduced to face 51.4mg / m 3 and 18.8mg / m 3, to meet the needs of dust.
  • the amide group makes the wetting agent have a certain adhesion to the coal dust, and the ester group makes the overall structure formed. The wettability of coal dust is enhanced.
  • the compounding of the moisturizing agent and surfactant used in coal mine spraying into the spraying system greatly improves the dust suppression efficiency and reduces the dust diffusion.
  • the dust suppressant is mainly made of natural products, which is harmless and non-toxic and can be degraded by itself.

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
  • Solid Fuels And Fuel-Associated Substances (AREA)
PCT/CN2018/100451 2018-07-02 2018-08-14 一种用于煤矿喷雾降尘的增润剂及制备方法 WO2020006817A1 (zh)

Priority Applications (1)

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JP2020564935A JP7050364B2 (ja) 2018-07-02 2018-08-14 炭鉱の噴霧による粉塵低減用の増潤剤及び調製方法

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CN201810705644.9 2018-07-02
CN201810705644.9A CN108864382B (zh) 2018-07-02 2018-07-02 一种用于煤矿喷雾降尘的增润剂及制备方法

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CN115851232A (zh) * 2022-11-17 2023-03-28 中煤科工集团沈阳研究院有限公司 一种环保型的高润湿性抑尘剂及其制备方法

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CN109813849B (zh) * 2019-02-14 2021-07-30 中国矿业大学 一种定量评估抑尘泡沫性能的方法
CN110105920B (zh) * 2019-06-04 2022-03-08 中国葛洲坝集团易普力股份有限公司 绿色高效矿山路面抑尘剂及其制备方法
CN112459825B (zh) * 2020-11-03 2022-11-18 山东科技大学 一种矿用抑尘-抑爆剂、制备方法及应用
CN112174805B (zh) * 2020-11-10 2023-02-03 杭州电化集团有限公司 一种低温不结晶乙酸钠的生产方法

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CN101735771A (zh) * 2009-12-01 2010-06-16 北京精诚博桑科技有限公司 一种用于水雾降尘的降尘剂
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JP2021523971A (ja) 2021-09-09
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CN108864382B (zh) 2019-10-01

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