WO2017071024A1 - 一种降低煤炭粉尘的润湿型除尘剂的制备方法 - Google Patents

一种降低煤炭粉尘的润湿型除尘剂的制备方法 Download PDF

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WO2017071024A1
WO2017071024A1 PCT/CN2015/098036 CN2015098036W WO2017071024A1 WO 2017071024 A1 WO2017071024 A1 WO 2017071024A1 CN 2015098036 W CN2015098036 W CN 2015098036W WO 2017071024 A1 WO2017071024 A1 WO 2017071024A1
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dust
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agent
anionic surfactant
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吴国光
孟献梁
褚睿智
刘晖
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China University of Mining and Technology Beijing CUMTB
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    • 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

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  • the invention relates to a method for preparing a dust removing agent for reducing coal dust, in particular to a method for preparing a wet type dust removing agent for reducing coal dust.
  • the coal dust concentration in the fully mechanized mining face can reach 2500-3000mg/m 3 , while the situation of the fully mechanized caving face is more serious than the general fully mechanized mining face.
  • the total dust concentration is as high as 8000-10000mg/m 3 .
  • Some dust collectors have a dust concentration of 1000mg/m 3 or more, which has seriously exceeded the national standard. It is not difficult to see how to use effective methods to control mine coal dust has become an arduous and urgent task.
  • the object of the present invention is to provide a low-cost, non-toxic and efficient method for preparing a wetting type dust removing agent for reducing coal dust, and to solve the problem that the coal dust exceeds the standard regardless of how to change the basic parameters of the nozzle.
  • the object of the present invention is achieved by adding a synergist to an anionic surfactant aqueous solution at a temperature of 20 to 80 ° C, stirring under reflux, and cooling to room temperature to obtain a component (A); In the solvent, the component (B) is obtained; the component (A) and the component (B) having a mass ratio of the solvent of 1-3:1 are directly mixed and stirred at room temperature; spraying at the coal mining site can effectively reduce A lot of dust; the specific steps are as follows:
  • component (B) The water retaining agent inorganic salt is placed in water, the water retaining agent and the solvent are added in a ratio of 0.2-2.0% by weight for 10-20 minutes to obtain component (B); the inorganic salt is a metal cation;
  • the component (A) and the component (B) having a mass ratio of the solvent to be contained in the range of 1-3:1 are directly mixed and stirred at room temperature to obtain a dust removing solution.
  • the component A is a mixed aqueous solution of an anionic surfactant and a synergist.
  • the component B is a water retaining agent mixed aqueous solution.
  • the anionic surfactant in the dust remover solution is AES, AOS or fast osmotic T.
  • the synergist is 6501, JFC or LAO-30.
  • the water retaining agent in the water retaining agent solution is NaCl, Na 2 SiO 3 , Na 2 SO 4 or CaCl 2 .
  • particles with a particle size larger than 10 ⁇ m in coal dust account for 20-30%
  • particles with a particle size larger than 20 ⁇ m only account for about 5%
  • particles with a particle size above 30 ⁇ m can basically reach complete sedimentation.
  • the surfactant in the dust-reducing agent is harmless to the human body, and is less irritating to human skin and mucous membrane of the eye. Therefore, the dusting agent is safe for the human body.
  • the annual average corrosion rate of the dust-reducing agent is less than 0.05 mm/a, and the annual average corrosion rate is smaller than that of the tap water. According to the uniform corrosion grade, the evaluation grades are excellent, and the corrosion to mechanical equipment is small.
  • the cost of this dust-reducing agent is calculated.
  • the cost only accounts for 0.2% of the total output value of raw coal.
  • the cost per ton of coal increases by about 1 yuan.
  • the dust can be greatly improved. Dust reduction efficiency and improved working environment.
  • the preparation method of the dampening type dust removing agent is added to the anionic surfactant aqueous solution at a temperature of 20 to 80 ° C, stirred under reflux, and cooled to room temperature to obtain a component (A); the water retaining agent is placed in a water solvent. In the middle, the component (B) is obtained; the component (A) and the component (B) having a mass ratio of the solvent of 1-3:1 are directly mixed and stirred uniformly at room temperature; spraying at the coal mining site can effectively reduce the amount Dust; the specific steps are as follows:
  • component (B) The water retaining agent inorganic salt is placed in water, the water retaining agent and the solvent are added in a ratio of 0.2-2.0% by weight for 10-20 minutes to obtain component (B); the inorganic salt is a metal cation;
  • the component (A) and the component (B) having a mass ratio of the solvent to be contained in the range of 1-3:1 are directly mixed and stirred at room temperature to obtain a dust removing solution.
  • the component A is a mixed aqueous solution of an anionic surfactant and a synergist.
  • the component B is an aqueous solution of a water retaining agent.
  • the anionic surfactant in the dust removing agent solution is AES, AOS or fast osmosis T, wherein the fast osmosis T effect is the best.
  • the synergist is 6501, JFC or LAO-30, of which JFC is the best.
  • the water retaining agent in the water retaining agent solution is NaCl, Na2SiO3, Na2SO4 and CaCl2, wherein NaCl and Na2SiO3 are most suitable for the dust removing agent.
  • the component (A) and the component (B) having a mass ratio of the solvent contained therein are directly mixed and stirred at room temperature to obtain a dust removing solution.
  • the component (A) and the component (B) having a mass ratio of the solvent of 5:4 are directly mixed and stirred at room temperature to obtain a dust removing solution;
  • the inorganic salt of the water retaining agent is a metal cation.
  • the water-retaining agent inorganic salt (metal cation) is placed in water, and the water-retaining agent and the solvent are added in a ratio of 1% by weight for 10-20 minutes to obtain a component (B); the water-retaining agent inorganic salt is a metal cation.
  • the component (A) and the component (B) having a mass ratio of the solvent of 3:2 are directly mixed and stirred at room temperature to obtain a dust removing solution.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Emulsifying, Dispersing, Foam-Producing Or Wetting Agents (AREA)
  • Detergent Compositions (AREA)

Abstract

一种降低煤炭粉尘的润湿型除尘剂的制备方法，除尘剂以组分A所含溶剂的量为100wt％计0.02-0.20wt％的阴离子表面活性剂快渗T，0.01-0.20wt％的非离子表面活性剂，组分B包含溶剂和以组分B中所含溶剂的总量为100wt％计0.2-2.0wt％的保水剂,组分A和B所含溶液的质量比为1-3∶1；除尘剂制备：将非离子表面活性剂加入阴离子表面活性剂溶液，回流搅拌，冷却至室温得组分A；将保水剂放入溶剂中得组分B；所含溶剂的质量比为1-3∶1的组分A和组分B直接室温混合搅拌均匀；在煤炭开采现场喷洒，可以有效的降低大量粉尘。具有低成本、无毒、高效的特点。

Description

一种降低煤炭粉尘的润湿型除尘剂的制备方法 技术领域
本发明涉及一种降低煤炭粉尘的除尘剂制备方法，特别是一种降低煤炭粉尘的润湿型除尘剂的制备方法。
背景技术
据统计，在没有采取防尘措施的情况下，综采工作面的煤尘浓度可达2500-3000mg/m3，而综放工作面的情况比一般综采工作面更严重，有些煤矿的瞬时总粉尘浓度高达8000-10000mg/m3。虽然很多煤矿采取了一定的措施，但是多数工作面的情况仍然不乐观，有些采煤机下风向的粉尘浓度达到1000mg/m3以上，已经严重超过了国家标准。不难看出，如何采用有效的方法防治矿井煤尘已经成为一项艰巨而紧迫的任务。
由于国内大多煤矿的工作面一般都比较小，无法安装大型布袋除尘器，因此，我国煤矿多采用喷雾降尘技术进行湿法降尘，而湿法降尘的关键在于降尘剂的选用。目前国内的喷雾技术，无论怎样改变喷嘴的基本参数，其雾化效果仍不能较大程度地降低粉尘浓度，仍然存在煤尘超标的现象。
发明内容
本发明的目的是要提供一种低成本、无毒、高效的降低煤炭粉尘的润湿型除尘剂的制备方法，解决无论怎样改变喷嘴的基本参数，仍然存在煤尘超标的问题。
本发明的目的是这样实现的：在20～80℃温度下，将增效剂剂加入阴离子表面活性剂水溶液中，回流搅拌，冷却至室温，得组分(A)；将保水剂放入水溶剂中，得组分(B)；所含溶剂的质量比为1-3∶1的组分(A)和组分(B)直接室温混合搅拌均匀；在煤炭开采现场喷洒，可以有效的降低大量粉尘；具体步骤如下：
(1)以水为溶剂，向溶剂中加入0.02-0.20wt％的阴离子表面活性剂，以所含溶剂的总量为100wt％计，混合均匀，得到阴离子表面活性剂溶液；
(2)在20～80℃的恒定温度下，将0.01-0.20wt％的增效剂加入上述阴离子表面活性剂溶液中，以所含溶剂的总量为100wt％计，回流搅拌30分钟；即得相应混合乳液组分(A)；
(3)将保水剂无机盐放入水中，保水剂与溶剂加入比例为0.2-2.0wt％搅拌10-20分钟得组分(B)；所述的无机盐为金属阳离子；
(4)使用前，将所含溶剂的质量比为1-3∶1的组分(A)和组分(B)直接室温混合搅拌均匀，即得到除尘溶液。
所述的组分A是阴离子表面活性剂与增效剂的混合水溶液。
所述的组分B是保水剂混合水溶液。
所述的除尘剂溶液中阴离子表面活性剂为AES、AOS或快渗T。
所述的增效剂为6501、JFC或LAO-30。
所述的保水剂溶液中保水剂为NaCl、Na2SiO3、Na2SO4或CaCl2。
有益效果，由于采用了上述方案，
(1)对实际无烟煤降尘实验中，煤尘中粒度大于10μm的颗粒占20-30％，粒度大于20μm的颗粒仅占5％左右，而对30μm以上的颗粒可以基本达到完全沉降。
(2)本降尘剂中的表面活性剂对人体无害，对人体皮肤、眼睛的黏膜组织的刺激性也很小。因此，本降尘剂对人体安全。
(3)本降尘剂的年平均腐蚀速率均小于0.05mm/a，与自来水的腐蚀速率相比，年平均腐蚀速率较小。按照均匀腐蚀等级划分，评价等级均优良，对机械设备的腐蚀性较小。
根据表面活性剂的市场报价对本降尘剂进行成本计算，其成本仅占原煤总产值的0.2％，煤矿每吨煤增加1元左右的成本，用于购买降尘剂，就可以大幅度提高煤尘的降尘效率，改善工作环境。
具体实施方式
润湿型除尘剂制备方法，在20～80℃温度下，将增效剂剂加入阴离子表面活性剂水溶液中，回流搅拌，冷却至室温，得组分(A)；将保水剂放入水溶剂中，得组分(B)；所含溶剂的质量比为1-3∶1的组分(A)和组分(B)直接室温混合搅拌均匀；在煤炭开采现场喷洒，可以有效的降低大量粉尘；具体步骤如下：
(1)以水为溶剂，向溶剂中加入0.02-0.20wt％的阴离子表面活性剂，以所含溶剂的总量为100wt％计，混合均匀，得到阴离子表面活性剂溶液；
(2)在20～80℃的恒定温度下，将0.01-0.20wt％的增效剂加入上述阴离子表面活性剂溶液中，以所含溶剂的总量为100wt％计，回流搅拌30分钟；即得相应混合乳液组分(A)；
(3)将保水剂无机盐放入水中，保水剂与溶剂加入比例为0.2-2.0wt％搅拌10-20分钟得组分(B)；所述的无机盐为金属阳离子；
(4)使用前，将所含溶剂的质量比为1-3∶1的组分(A)和组分(B)直接室温混合搅拌均匀，即得到除尘溶液。
所述的组分A是阴离子表面活性剂与增效剂的混合水溶液。
所述的组分B是保水剂水溶液。
所述的除尘剂溶液中阴离子表面活性剂为AES、AOS或快渗T，其中快渗T效果最好。
所述的增效剂为6501、JFC或LAO-30，其中JFC最好。
所述的保水剂溶液中保水剂为NaCl、Na2SiO3、Na2SO4和CaCl2，其中NaCl、Na2SiO3最适合本除尘剂。
实施例1：
1.除尘剂溶液的制备
(1)以水为溶剂，向溶剂中加入0.08wt％的阴离子表面活性剂，混合均匀，得到阴离子表面活性剂溶液；所含溶剂的总量为100wt％计；
(2)在20～80℃的恒定温度下，将0.08wt％的增效剂加入上述阴离子表面活性剂溶液中，回流搅拌30分钟；即得相应混合乳液，所含溶剂的总量为100wt％计；
(3)将保水剂无机盐(金属阳离子)放入水中，保水剂与溶剂加入比例为1％wt搅 拌10-20分钟得组分(B)；所述的保水剂无机盐为金属阳离子；
(4)使用前，将所含溶剂的质量比为1∶1的组分(A)和组分(B)直接室温混合搅拌均匀，即得到除尘溶液。
2.除尘效果
在永城无烟煤的降尘实验，煤尘中粒度大于10μm的颗粒占22.5％，粒度大于20μm的颗粒仅占4.7％，而对30μm以上的颗粒可以基本达到完全沉降。
实施例2：
1.除尘剂溶液的制备
(1)以水为溶剂，向溶剂中加入0.10wt％的阴离子表面活性剂，混合均匀，得到阴离子表面活性剂溶液；所含溶剂的总量为100wt％计；
(2)在20～80℃的恒定温度下，将0.10wt％的增效剂加入上述阴离子表面活性剂溶液中，回流搅拌30分钟；即得相应混合乳液；所含溶剂的总量为100wt％计；
(3)将保水剂无机盐(金属阳离子)放入水中，保水剂与溶剂加入比例为1％wt搅拌10-20分钟得组分(B)；
(4)使用前，将所含溶剂的质量比为5∶4的组分(A)和组分(B)直接室温混合搅拌均匀，即得到除尘溶液；所述的保水剂无机盐为金属阳离子。
2.除尘效果
在瑄梓肥煤的降尘实验，煤尘中粒度大于10μm的颗粒占27.2％，粒度大于20μm的颗粒占10.9％，而对30μm以上的颗粒可以基本达到完全沉降。
实施例3：
1.除尘剂溶液的制备
(1)以水为溶剂，向溶剂中加入0.12wt％的阴离子表面活性剂，混合均匀，得到阴离子表面活性剂溶液；所含溶剂的总量为100wt％计；
(2)在20～80℃的恒定温度下，将0.10wt％的增效剂加入上述阴离子表面活性剂溶液中，回流搅拌30分钟；即得相应混合乳液；所含溶剂的总量为100wt％计；
(3)将保水剂无机盐(金属阳离子)放入水中，保水剂与溶剂加入比例为1％wt搅拌10-20分钟得组分(B)；所述的保水剂无机盐为金属阳离子。
(4)使用前，将所含溶剂的质量比为3∶2的组分(A)和组分(B)直接室温混合搅拌均匀，即得到除尘溶液。
2.除尘效果
在潞安贫瘦煤的降尘实验，煤尘中粒度大于10μm的颗粒占22.1％，粒度大于20μm的颗粒占3.5％，而对30μm以上的颗粒可以基本达到完全沉降。

Claims (6)

  1. 一种降低煤炭粉尘的润湿型除尘剂的制备方法，其特征是：润湿型除尘剂制备方法，在20～80℃温度下，将增效剂加入阴离子表面活性剂水溶液中，回流搅拌，冷却至室温，得组分(A)；将保水剂放入水溶剂中，得组分(B)；所含溶剂的质量比为1-3∶1的组分(A)和组分(B)直接室温混合搅拌均匀；在煤炭开采现场喷洒，可以有效的降低大量粉尘；具体步骤如下：
    (1)以水为溶剂，向溶剂中加入0.02-0.20wt％的阴离子表面活性剂，以所含溶剂的总量为100wt％计，混合均匀，得到阴离子表面活性剂溶液；
    (2)在20～80℃的恒定温度下，将0.01-0.20wt％的增效剂加入上述阴离子表面活性剂溶液中，以所含溶剂的总量为100wt％计，回流搅拌30分钟；即得相应混合乳液组分(A)；
    (3)将保水剂无机盐放入水中，保水剂与溶剂加入比例为0.2-2.0wt％搅拌10-20分钟得组分(B)；所述的无机盐为金属阳离子；
    (4)使用前，将所含溶剂的质量比为1-3∶1的组分(A)和组分(B)直接室温混合搅拌均匀，即得到除尘溶液。
  2. 根据权利要求1所述的一种降低煤炭粉尘的润湿型除尘剂的制备方法，其特征是：所述的组分A是阴离子表面活性剂与增效剂的混合水溶液。
  3. 根据权利要求1所述的一种降低煤炭粉尘的润湿型除尘剂的制备方法，其特征是：所述的组分B是保水剂水溶液。
  4. 根据权利要求1所述的一种降低煤炭粉尘的润湿型除尘剂的制备方法，其特征是：所述的除尘剂溶液中阴离子表面活性剂为AES、AOS或快渗T。
  5. 根据权利要求1所述的一种降低煤炭粉尘的润湿型除尘剂的制备方法，其特征是：所述的增效剂为6501、JFC或LAO-30。
  6. 根据权利要求1所述的一种降低煤炭粉尘的润湿型除尘剂的制备方法，其特征是：所述的保水剂溶液中保水剂为NaCl、Na2SiO3、Na2SO4和CaCl2。
PCT/CN2015/098036 2015-10-29 2015-12-21 一种降低煤炭粉尘的润湿型除尘剂的制备方法 Ceased WO2017071024A1 (zh)

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CN106701022A (zh) * 2016-11-15 2017-05-24 中海油天津化工研究设计院有限公司 一种具有催化煤炭燃烧作用的扬尘抑制剂及其制备方法
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