CN103045170A - Method for preparing high-performance coal dust suppressant - Google Patents

Method for preparing high-performance coal dust suppressant Download PDF

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Publication number
CN103045170A
CN103045170A CN2012103296450A CN201210329645A CN103045170A CN 103045170 A CN103045170 A CN 103045170A CN 2012103296450 A CN2012103296450 A CN 2012103296450A CN 201210329645 A CN201210329645 A CN 201210329645A CN 103045170 A CN103045170 A CN 103045170A
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China
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sodium
coal
coal dust
water
hydrogen peroxide
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CN2012103296450A
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Chinese (zh)
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CN103045170B (en
Inventor
许晋华
朱开金
谭俊华
赵彦亮
刘菲
陈雪琪
李彦洁
魏志霞
胡佩
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山西中阳实业有限公司
太原工业学院
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Publication of CN103045170A publication Critical patent/CN103045170A/en
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Abstract

The invention relates to the technical field of composite science and environmental protection, and in particular relates to a method for preparing a high-performance coal dust suppressant. The invention aims to overcome the shortcomings of long film-forming setting time, poor bonding strength and toughness, poor high/low temperature resistance and the like of the existing coal dust suppressant when in use. The high-performance coal dust suppressant is prepared from sodium carboxyethyl cellulose, sodium carboxypropyl starch, hydrogen peroxide, glycerol, calcium chloride, sodium fluoride, polyvinyl alcohol, glycol, dibutyl phthalate, bentonite and water. The method comprises the following steps of: firstly dissolving the sodium carboxyethyl cellulose and the sodium carboxypropyl starch, adding the hydrogen peroxide to the solution to arouse oxidization reaction; next, adding the glycerol to the solution and adjusting the pH value of the solution to 6.5-7.5; and finally, orderly adding the polyvinyl alcohol, calcium chloride, sodium fluoride, dibutyl phthalate, bentonite and glycol and adding water, and stirring, and evenly mixing, thereby obtaining the high-performance coal dust suppressant. The method provided by the invention is simple to operate, simple and convenient to prepare, low in cost and convenient for operation; and the method meets the environmental protection requirement and has excellent social benefit and economic benefit.

Description

A kind of preparation method of high-performance coal dust depressor
Technical field
The present invention relates to composite science and environmental protection technical field, be specially a kind of preparation method of high-performance coal dust depressor.
Background technology
Coal is in transportation and stacking process, because wind erosion or water erosion meeting cause a certain amount of loss and environmental pollution.Coal Transport, particularly transportation by railroad generally all adopt open-top car to carry out.In transportation, because of the generation airborne dust that jolts of road, add wind effect, can make airborne dust more violent; In addition, because can forming very large wind soon, the transport trolley travelling speed acts on the coal surface, its surperficial coal dust and particle are blown off, this has caused the loss of coal on the one hand, directly cause the waste of valuable coal resources, also can cause on the other hand transportation pollution caused by coal dust along the line, also can affect simultaneously transportation crop growth along both side; Again, coal dust brings sizable difficulty for the maintenance repair of rail facility, and greatly shortens its work-ing life also with the severe contamination rail facility.
For solving airborne dust that wind erosion in Coal Transport and the stacking process and water erosion cause, washing away the problems such as loss, environmental pollution, addressing this problem the simplest method in the prior art is at the coal surface sprinkling, make its surface crust, to reduce airborne dust, but this method weak effect, water consumption is large, and cost is high.Along with the development of art technology, in recent years, people have developed a kind of coal dust depressor; by at some special chemical agents of coal dust surface sprinkling; so that pulverized coal particle mutually combines, form one deck water-insoluble protective membrane, thereby reach the purpose that prevents that coal dust from flying upward.But the present various dust-inhibitors of developing all exist film forming long time of coagulation in actual use, formed cured layer thickness does not reach the defectives such as service requirements, and cohesive strength and toughness are relatively poor, the high-low temperature resistant weak effect, thereby greatly affected they use properties and apply.
 
Summary of the invention
The present invention exists film forming long time of coagulation in order to solve existing coal dust depressor in use, and cohesive strength and toughness are relatively poor, and the deficiencies such as high-low temperature resistant weak effect provide a kind of preparation method of high-performance coal dust depressor.
The present invention adopts following technical scheme to realize: a kind of preparation method of high-performance coal dust depressor, described coal inhibitor is to be made by the raw material of following weight percent, sodium hydroxyethlcellulose 1.0 ~ 1.5%, carboxylic propyl group Starch Sodium 0.3 ~ 0.5%, hydrogen peroxide 2.0 ~ 2.5%, glycerine 0.2 ~ 0.4%, calcium chloride 2.0 ~ 3.0%, Sodium Fluoride 1.0 ~ 1.5%, polyvinyl alcohol 0.5 ~ 1.0%, ethylene glycol 0.5 ~ 1.0%, dibutyl phthalate 0.2 ~ 0.5%, wilkinite 0.3 ~ 0.5%, all the other are water;
The preparation process of described coal inhibitor is as follows: (1) adds sodium hydroxyethlcellulose, carboxylic propyl group Starch Sodium first the water heating, and it is dissolved fully, carries out oxidizing reaction to wherein adding hydrogen peroxide again; (2) after the said mixture reaction is finished, further react to wherein adding glycerol, adding simultaneously sodium hydroxide solution regulator solution pH value is 6.5 ~ 7.5; (3) reaction complete after, add successively polyvinyl alcohol, calcium chloride, Sodium Fluoride, dibutyl phthalate, wilkinite, ethylene glycol and add water and stir, mixing namely gets coal dust depressor of the present invention.
In the above-mentioned prescription, sodium hydroxyethlcellulose, carboxylic propyl group Starch Sodium all are polyhydric macromolecular cpds, carry out oxidizing reaction after adding hydrogen peroxide, make part of hydroxyl become carboxyl, and the mutual grafting dehydration of hydroxyl and carboxyl forms network structure, improves viscosity; The effect that adds glycerine provides after hydroxyl and the oxidation Mierocrystalline cellulose and the also moisturizing of Sumstar 190 reaction with carboxyl, thereby further improves viscosity; Adding polyvinyl alcohol is as tackifier, adds calcium chloride and Sodium Fluoride as adhesion promotor, can greatly improve cohesiveness and cohesive strength; Add dibutyl phthalate as softening agent, can make dust-inhibitor at the formed cured layer of coal surface preferably plasticity be arranged, add wilkinite as quick dry agent, shorten film forming time of coagulation; Add ethylene glycol as pour point depressant, can reduce the zero pour of dust-inhibitor, so that dust-inhibitor has good low temperature dispersity and flowability, also can normally use at a lower temperature.
Utilization of the present invention has the inorganic of certain characteristic, organic and polymer substance is dissolved in water and forms, the product that obtains is the environment-friendly type fluxion, tasteless, nontoxic, harmless, without corrosion, nonflammable, on ature of coal without impact, when train or automobile shipment coal, spray this agent by sprinkling system, can make the coal surface form immediately the thick cured layer of one deck 5 ~ 10mm, more than general coal dust depressor fast 30s time of coagulation, cohesive strength and toughness are high by 30 ~ 50%, can prevent wind-force in the Coal Transport process greater than the kicking up again of dust under the situation more than seven grades, temperature greater than 50 ℃ or less than-20 ℃ situation under can keep boning more than the 30d.In a word, coal dust depressor of the present invention, use simple to operate, preparation method is easy; production cost is lower, is convenient to operation enforcement and meets environmental requirement, and traffic unit and coal customers were reduced the loss; also effective protection of the environment has good Social benefit and economic benefit.
In order to verify the result of use of coal dust depressor of the present invention, entrust Shanxi province Taiyuan city quality technical supervision verification test that this product is tested, the detected result of gained sees Table 1:
Annotate: (1) wind erosion rate measuring method:
1. get the coal sample 6kg of 20 mesh sieves, in 70 ~ 80 ℃ baking oven, dried by the fire 1h;
2. get 3 enamel pallets, three parts of coal samples of average mark add respectively;
3. spray this liquid dust-inhibitor in the coal sample surface 10s time with the honeycomb sprinker respectively, leave standstill weighing behind the 1h, namely get the coal sample wind erosion rate with the coal sample amount of coal sample reduction before divided by wind.
(2) cured layer thickness measurement: appoint and to get 3 place's cured layers, divide with vernier callipers and survey its thickness, calculate again mean value and get final product.
In addition, in order further to verify this coal dust depressor effect in actual applications, entrust middle-jiao yang, function of the spleen and stomach Iron And Steel Co., Ltd coke-oven plant, Shanxi to test.Process of the test is as follows, analyzes simultaneously to report to the results are shown in the examination as to substances bibliography,
In November, 2011, carry out the unit train test in place in Liulin County, Shanxi Province county and Zhongyang County, filling the about 40kg of every joint compartment surface sprinkling dust-inhibitor of the present invention of coal, train passes through 5 about 30km in tunnel in transportation, actual service life 100km, temperature changes between-20 ℃ ~+10 ℃, after arriving at the destination, do not spray the larger particles coal of vehicle by the both sides of wind to the compartment, whole coal seam height decline 50cm, and the coal surface cured layer crackle that sprayed the dust-inhibitor compartment is less, and cured layer descends hardly, the basic free of losses of coal.
Through the whole story take off data calculate that about every joint compartment Coal Loss 100kg, the 50 joint compartments coal 5000kg that detracts altogether if press conservative 500 yuan/t of the valency calculating of coal, loses 2500 yuan altogether.And 250 yuan of coal dust depressor prices per ton, train 50 joints use the coal dust depressor of 2000kg, and then use cost is 500 yuan, reduces the loss 2000 yuan.
Embodiment
Embodiment 1: a kind of preparation method of high-performance coal dust depressor, described coal inhibitor is to be made by the raw material of following weight percent, sodium hydroxyethlcellulose 1.0%, carboxylic propyl group Starch Sodium 0.3%, hydrogen peroxide 2.0%, glycerine 0.4%, calcium chloride 3.0%, Sodium Fluoride 1.0%, polyvinyl alcohol 1.0%, ethylene glycol 1.0%, dibutyl phthalate 0.2%, wilkinite 0.3%, all the other are water; The preparation process of described coal inhibitor is as follows: (1) adds sodium hydroxyethlcellulose, carboxylic propyl group Starch Sodium first the water heating, and it is dissolved fully, carries out oxidizing reaction to wherein adding hydrogen peroxide again; (2) after the said mixture reaction is finished, further react to wherein adding glycerol, adding simultaneously sodium hydroxide solution regulator solution pH value is 6.5 ~ 7.5; (3) reaction complete after, add successively polyvinyl alcohol, calcium chloride, Sodium Fluoride, dibutyl phthalate, wilkinite, ethylene glycol and add water and stir, mixing namely gets coal dust depressor of the present invention, viscosity 19.5mPas, wind erosion rate 0.3%, cured layer thickness 13.9mm.
Embodiment 2: a kind of preparation method of high-performance coal dust depressor, described coal inhibitor is to be made by the raw material of following weight percent, sodium hydroxyethlcellulose 11.5%, carboxylic propyl group Starch Sodium 0.5%, hydrogen peroxide 2.5%, glycerine 0.2%, calcium chloride 2.0%, Sodium Fluoride 1.5%, polyvinyl alcohol 0.5%, ethylene glycol 0.5%, dibutyl phthalate 0.5%, wilkinite 0.5%, all the other are water; The preparation process of described coal inhibitor is as follows: (1) adds sodium hydroxyethlcellulose, carboxylic propyl group Starch Sodium first the water heating, and it is dissolved fully, carries out oxidizing reaction to wherein adding hydrogen peroxide again; (2) after the said mixture reaction is finished, further react to wherein adding glycerol, adding simultaneously sodium hydroxide solution regulator solution pH value is 6.5 ~ 7.5; (3) reaction complete after, add successively polyvinyl alcohol, calcium chloride, Sodium Fluoride, dibutyl phthalate, wilkinite, ethylene glycol and add water and stir, mixing namely gets coal dust depressor of the present invention, viscosity 18mPas, wind erosion rate 0.5%, cured layer thickness 17mm.
Embodiment 3: a kind of preparation method of high-performance coal dust depressor, described coal inhibitor is to be made by the raw material of following weight percent, sodium hydroxyethlcellulose 1.3%, carboxylic propyl group Starch Sodium 0.3%, hydrogen peroxide 2.3%, glycerine 0.4%, calcium chloride 2.5%, Sodium Fluoride 1.2%, polyvinyl alcohol 0.8%, ethylene glycol 1.0%, dibutyl phthalate 0.4%, wilkinite 0.4%, all the other are water; The preparation process of described coal inhibitor is as follows: (1) adds sodium hydroxyethlcellulose, carboxylic propyl group Starch Sodium first the water heating, and it is dissolved fully, carries out oxidizing reaction to wherein adding hydrogen peroxide again; (2) after the said mixture reaction is finished, further react to wherein adding glycerol, adding simultaneously sodium hydroxide solution regulator solution pH value is 6.5 ~ 7.5; (3) reaction complete after, add successively polyvinyl alcohol, calcium chloride, Sodium Fluoride, dibutyl phthalate, wilkinite, ethylene glycol and add water and stir, mixing namely gets coal dust depressor of the present invention, viscosity 21.5mPas, wind erosion rate 0.3%, cured layer thickness 13.5mm.
Embodiment 4: a kind of preparation method of high-performance coal dust depressor, described coal inhibitor is to be made by the raw material of following weight percent, sodium hydroxyethlcellulose 1.4%, carboxylic propyl group Starch Sodium 0.4%, hydrogen peroxide 2.4%, glycerine 0.3%, calcium chloride 2.8%, Sodium Fluoride 1.3%, polyvinyl alcohol 0.6%, ethylene glycol 0.8%, dibutyl phthalate 0.3%, wilkinite 0.3%, all the other are water; The preparation process of described coal inhibitor is as follows: (1) adds sodium hydroxyethlcellulose, carboxylic propyl group Starch Sodium first the water heating, and it is dissolved fully, carries out oxidizing reaction to wherein adding hydrogen peroxide again; (2) after the said mixture reaction is finished, further react to wherein adding glycerol, adding simultaneously sodium hydroxide solution regulator solution pH value is 6.5 ~ 7.5; (3) reaction complete after, add successively polyvinyl alcohol, calcium chloride, Sodium Fluoride, dibutyl phthalate, wilkinite, ethylene glycol and add water and stir, mixing namely gets coal dust depressor of the present invention, viscosity 14mPas, wind erosion rate 0.1%, cured layer thickness 16mm.
Embodiment 5: a kind of preparation method of high-performance coal dust depressor, described coal inhibitor is to be made by the raw material of following weight percent, sodium hydroxyethlcellulose 1.2%, carboxylic propyl group Starch Sodium 0.3%, hydrogen peroxide 2.2%, glycerine 0.4%, calcium chloride 2.4%, Sodium Fluoride 1.1%, polyvinyl alcohol 0.9%, ethylene glycol 0.6%, dibutyl phthalate 0.2%, wilkinite 0.5%, all the other are water; The preparation process of described coal inhibitor is as follows: (1) adds sodium hydroxyethlcellulose, carboxylic propyl group Starch Sodium first the water heating, and it is dissolved fully, carries out oxidizing reaction to wherein adding hydrogen peroxide again; (2) after the said mixture reaction is finished, further react to wherein adding glycerol, adding simultaneously sodium hydroxide solution regulator solution pH value is 6.5 ~ 7.5; (3) reaction complete after, add successively polyvinyl alcohol, calcium chloride, Sodium Fluoride, dibutyl phthalate, wilkinite, ethylene glycol and add water and stir, mixing namely gets coal dust depressor of the present invention, viscosity 16mPas, wind erosion rate 0.2%, cured layer thickness 15mm.

Claims (1)

1. the preparation method of a high-performance coal dust depressor is characterized in that described coal inhibitor is to be made by the raw material of following weight percent,
Sodium hydroxyethlcellulose 1.0 ~ 1.5%, carboxylic propyl group Starch Sodium 0.3 ~ 0.5%, hydrogen peroxide 2.0 ~ 2.5%, glycerine 0.2 ~ 0.4%, calcium chloride 2.0 ~ 3.0%, Sodium Fluoride 1.0 ~ 1.5%, polyvinyl alcohol 0.5 ~ 1.0%, ethylene glycol 0.5 ~ 1.0%, dibutyl phthalate 0.2 ~ 0.5%, wilkinite 0.3 ~ 0.5%, all the other are water;
The preparation process of described coal inhibitor is as follows:
(1) first sodium hydroxyethlcellulose, carboxylic propyl group Starch Sodium are added the water heating, it is dissolved fully, carry out oxidizing reaction to wherein adding hydrogen peroxide again;
(2) after the said mixture reaction is finished, further react to wherein adding glycerol, adding simultaneously sodium hydroxide solution regulator solution pH value is 6.5 ~ 7.5;
(3) reaction complete after, add successively polyvinyl alcohol, calcium chloride, Sodium Fluoride, dibutyl phthalate, wilkinite, ethylene glycol and add water and stir, mixing namely gets coal dust depressor of the present invention.
CN201210329645.0A 2012-09-10 2012-09-10 Method for preparing high-performance coal dust suppressant CN103045170B (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104946204A (en) * 2015-05-25 2015-09-30 太原工业学院 High-capture foamed coal dust inhibitor and preparation method thereof
CN106047299A (en) * 2016-05-26 2016-10-26 覃政强 Coal dust inhibitor and method for preparing same
CN106964494A (en) * 2017-05-17 2017-07-21 太原工业学院 A kind of low-cost high-efficiency flotation agent for coal slurry

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101508884A (en) * 2009-03-26 2009-08-19 北京化工大学 Coal dust suppression agent and method of preparing the same
CN101851489A (en) * 2010-04-17 2010-10-06 陈维岳 Environmental-friendly dust suppressant and preparation method thereof
KR101145750B1 (en) * 2012-02-22 2012-05-17 주식회사 하이릭 Freeze-resistant dust keeper and manufacturing method of the same

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101508884A (en) * 2009-03-26 2009-08-19 北京化工大学 Coal dust suppression agent and method of preparing the same
CN101851489A (en) * 2010-04-17 2010-10-06 陈维岳 Environmental-friendly dust suppressant and preparation method thereof
KR101145750B1 (en) * 2012-02-22 2012-05-17 주식회사 하이릭 Freeze-resistant dust keeper and manufacturing method of the same

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104946204A (en) * 2015-05-25 2015-09-30 太原工业学院 High-capture foamed coal dust inhibitor and preparation method thereof
CN104946204B (en) * 2015-05-25 2017-04-05 太原工业学院 It is high to catch expansion type coal dust inhibitor and preparation method thereof
CN106047299A (en) * 2016-05-26 2016-10-26 覃政强 Coal dust inhibitor and method for preparing same
CN106964494A (en) * 2017-05-17 2017-07-21 太原工业学院 A kind of low-cost high-efficiency flotation agent for coal slurry

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