CN103937565A - Preparation method of coal tar emulsifying agent - Google Patents
Preparation method of coal tar emulsifying agent Download PDFInfo
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- CN103937565A CN103937565A CN201410139279.1A CN201410139279A CN103937565A CN 103937565 A CN103937565 A CN 103937565A CN 201410139279 A CN201410139279 A CN 201410139279A CN 103937565 A CN103937565 A CN 103937565A
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Abstract
The invention discloses a preparation method of a coal tar emulsifying agent. The preparation method comprises the following steps: sulfonating industrial naphthalene serving as a raw material at a heating state by using sulfuric acid so as to obtain naphthalene sulfonic acid, condensing naphthalene sulfonic acid with a formaldehyde solution so as to obtain a naphthalene sulfonic acid formaldehyde condensation product aqueous solution, then mixing the naphthalene sulfonic acid formaldehyde condensation product aqueous solution with a lignosulfonic acid saline water solution, finally condensing with the formaldehyde solution so as to obtain a lignin naphthalene sulfonic acid formaldehyde condensation product aqueous solution, and adjusting the pH value of the naphthalene sulfonic acid formaldehyde condensation product aqueous solution by adopting alkali liquor to 10-13, thus obtaining the emulsifying agent. The raw materials for preparing the emulsifying agent are low in cost, wide in source and beneficial to environmental protection. The coal tar emulsifying agent prepared by the method is little in addition, convenient to use, large in variation range of water addition amount and wide in application range and has a good emulsification effect and low requirements on emulsification conditions.
Description
Technical field
The present invention relates to a kind of preparation method of chemical industry additive, be specifically related to a kind of preparation method of coal tar emulsifying agent.
Background technology
When coal tar is coal destructive distillation, the black of generation or chocolate viscous liquid, be the significant by-products of Coal dressing industry.Composition in coal tar reaches up to ten million kinds, mainly contains the aromatic hydrocarbons such as benzene,toluene,xylene, naphthalene, anthracene and aromatic series oxygenatedchemicals (as point compounds such as phenol), the gas chromatographies such as sulfur-bearing, nitrogenous heterogeneous ring compound.For a long time, coal tar is always as important industrial chemicals, but the turnout of coal tar is greater than the amount of finish of chemical industry, has a large amount of coal tar well to be utilized.For solving energy deficiency, many places replace heavy oil, heavy gas oil burning boiler with coal tar as fuel.But coal tar viscosity is large, poor fluidity, colloid greatly, easily stop up boiler filter screen, spray tip coking, incomplete combustion, impact is normally produced, and has restricted the development of coal tar.
Coal tar emulsifying technology is taking cheap coal tar as main raw material, by water emulsifying, suitable adjusting processing, prepares the oil fuel that meets the requirements, is applicable to boiler combustion.But, at present mostly concentrate on emulsification after the petrochemical industry residual oil (former residual oil) that adulterates in coal tar about the research of coal tar emulsifying, and the cost of residual oil being higher, this can strengthen the use cost of coal tar.Separately have report, in coal tar, add the emulsifying agent emulsification of a small amount of coal dust or coke powder, can make stable milk sap, but the viscosity that adds membership increase milk sap of coal dust is brought difficulty to the conveying of coal tar.In addition, mostly be the built agent of sapn and tween series for the emulsifying agent of emulsification coal tar, use loaded down with trivial details, price is higher, poor for applicability, be applicable to the sapn of coalite tar and the proportioning of tween is not necessarily applicable to coal-tar heavy oil, and amount of water in coal tar is lower than 30%.
Summary of the invention
For the deficiencies in the prior art, the invention provides a kind of preparation method of coal tar emulsifying agent, taking NAPTHALENE FLAKES. (INDUSTRIAL GRADE） as raw material, under heated condition, after sulfuric acid sulfonation, obtain naphthene sulfonic acid, then obtain the naphthalene sulfonic acidformaldehyde condensation product aqueous solution with formaldehyde solution condensation, then with sulfonated lignin aqueous solution, last and formaldehyde solution condensation obtains the xylogen naphthalene sulfonic acidformaldehyde condensation product aqueous solution, adopts alkali lye to regulate pH value to 10-13, is emulsifying agent.This emulsifying agent is raw materials used cheap, and wide material sources are beneficial to environmental protection; The coal tar emulsifying agent add-on that adopts the method to prepare is few, emulsify well, and emulsification condition requires low, easy to use, and amount of water variation range is large, applied range.
A preparation method for coal tar emulsifying agent, its concrete preparation process is as follows:
(1), taking NAPTHALENE FLAKES. (INDUSTRIAL GRADE） as raw material, under heated condition, after sulfuric acid sulfonation, obtain naphthene sulfonic acid;
(2) under heated condition, in step (1) gained naphthene sulfonic acid, drip formaldehyde solution, be dissolved in water, obtain the naphthalene sulfonic acidformaldehyde condensation product aqueous solution;
(3) step (2) the gained naphthalene sulfonic acidformaldehyde condensation product aqueous solution and sulfonated lignin aqueous solution, under heated condition, then drip formaldehyde solution, obtain the xylogen naphthalene sulfonic acidformaldehyde condensation product aqueous solution, adopt alkali lye to regulate pH value to 10-13, be emulsifying agent.
There are aromatic hydrocarbons and the aromatic series oxygenatedchemicalss thereof such as benzene,toluene,xylene, naphthalene, anthracene due to the composition of coal tar, why selecting NAPTHALENE FLAKES. (INDUSTRIAL GRADE） is raw material, because according to similar compatibility principle, naphthalene add the lipophilicity that can increase emulsifying agent, meanwhile, NAPTHALENE FLAKES. (INDUSTRIAL GRADE） is cheap, and purity is high, sulfonation is effective, the emulsifying agent emulsify well of preparing taking NAPTHALENE FLAKES. (INDUSTRIAL GRADE） as raw material.
Described NAPTHALENE FLAKES. (INDUSTRIAL GRADE） is commercially available prod, is wherein 95% containing the massfraction of naphthalene.
In the ligninsulfonate adopting, contain a large amount of phenyl ring and wetting ability ehter bond and sulfonate radical, good hydrophilic property; The ligninsulfonate simultaneously adopting is papermaking wastewater, and price is lower, has reduced environmental pollution, is conducive to environmental protection.
The described sulfuric acid of step (1) is that massfraction is the vitriol oil of 70%-99% or contains the oleum that SO3 massfraction is 10%-66%.
The mol ratio of the described NAPTHALENE FLAKES. (INDUSTRIAL GRADE） of step (1) and sulfuric acid is 1:1-1.3.If molar ratio range is excessive, generate the many sulfonic acid of by product naphthalene, on naphthalene molecule, connect two or more sulfonate radicals, be unfavorable for the generation of target product; If molar ratio range is too small, naphthalene may not react completely, and causes final effective content on the low side, affects result of use.Here sulfuric acid used is excessive a little, and why sulfuric acid is excessive a little, is because step (1), step (2) and step (3) need to could be reacted better under acidic conditions.
Temperature of reaction under the described heated condition of step (1) is 120 DEG C-160 DEG C, and the reaction times is 2 hours-4 hours.The naphthene sulfonic acid that step (1) generates requires as beta-naphthalenesulfonic-acid, because α-naphthalenesulfonicacid is because space steric effect will be unfavorable for the carrying out of reaction.If temperature of reaction is too high, energy wastage is many, and industrial production cost is high; If temperature of reaction is too low, generate α-naphthalenesulfonicacid or reaction efficiency is low, do not reach like this requirement of reaction.In addition, the fusing point of beta-naphthalenesulfonic-acid salt is 124 DEG C, and temperature is too low may be separated out.If the reaction times is too small, reaction not exclusively; If the reaction times is excessive, although level of response is high, can affect industrial production efficiency.
In the described NAPTHALENE FLAKES. (INDUSTRIAL GRADE） of step (2) and formaldehyde solution, the mol ratio of formaldehyde is 1:0.8-1.3.If molar ratio range is excessive, the add-on of formaldehyde is very few, can cause condensation degree inadequate, affects the result of use of emulsifying agent; If molar ratio range is excessive, the add-on of formaldehyde is excessive, causes condensation degree excessive, and reactant thickness even solidifies, and easily causes the accident.
The formalin solution that the described formaldehyde solution of step (2) is is 35%-40% containing formaldehyde massfraction.
Temperature of reaction under the described heated condition of step (2) is 100-120 DEG C, and the reaction times is 2-4 hour.If temperature of reaction is too high, to consider from industrialization angle, energy dissipation is serious, and side reaction is simultaneously more; If temperature of reaction is too low, reaction not exclusively or speed of reaction low.If the reaction times is long, reaction efficiency is low, affects suitability for industrialized production speed; If the reaction times is too short, reaction not exclusively, affects final emulsifying effectiveness.
Described in step (2), in naphthene sulfonic acid, drip formaldehyde solution, be dissolved in water, obtain the naphthalene sulfonic acidformaldehyde condensation product aqueous solution.Here why add water, that the object that adds water is that naphthalene sulfonic acidformaldehyde condensation product is dissolved because naphthalene sulfonic acidformaldehyde condensation product in water content very little time, is very thickness or even solid state, obtain the naphthalene sulfonic acidformaldehyde condensation product aqueous solution, to participate in better reaction.
The described sulfonated lignin of step (3): naphthalene sulfonic acidformaldehyde condensation product: the mass ratio of formaldehyde is 1:0.2-0.5:0.3-0.5.The quality of the naphthalene sulfonic acidformaldehyde condensation product be here formaldehyde in the described NAPTHALENE FLAKES. (INDUSTRIAL GRADE） of step (1), sulfuric acid and step (2) formaldehyde solution quality and.What in this proportioning, play a crucial role is the proportioning of sulfonated lignin and naphthalene sulfonic acidformaldehyde condensation product, the good hydrophilic property of sulfonated lignin, and the lipophilicity of naphthalene sulfonic acidformaldehyde condensation product is good.So if the add-on of sulfonated lignin is very few, the wetting ability of final emulsifying agent is poor, the maximum adding quantity of emulsification coal tar can reduce, and may not reach 50% by amount of water; If the add-on of naphthalene sulfonic acidformaldehyde condensation product is very few, the lipophilicity of final emulsifying agent is poor, and the poor stability of emulsification coal tar, easily separates out water.In step (2) and step (3) formaldehyde solution added link effect, couple together by two molecules.If add-on is too much, cause the wasting of resources; If add-on is very few, do not have link effect.
The formalin solution that the described formaldehyde solution of step (3) is is 35%-40% containing formaldehyde massfraction.
Temperature of reaction under the described heated condition of step (3) is 90-100 DEG C, and the reaction times is 2-4h.If temperature of reaction is too high, energy dissipation, side reaction may be more; If temperature of reaction is low, it is slow that speed is not carried out or carried out in reaction.If the reaction times is too short, level of response is inadequate, affects emulsifying agent result of use; If the reaction times is long, affect industrial production efficiency.
The described alkali lye of step (3) is one or more in ammoniacal liquor or sodium hydroxide solution or potassium hydroxide solution.The object that adopts alkali lye to regulate is controlled at pH value (being acidity) between 10-13 exactly, as long as pH value is adjusted to 10-13, to the not requirement of the concentration of alkali lye, as long as in its solubility range.If pH value is too small, SO
3 -may be with SO
3the form of H exists, and affects the water-soluble of emulsifying agent; If pH value is excessive, both easily caused metal vessel corrosion, also cause the waste of alkali lye raw material.
The described sulfonated lignin of step (3) are the one in sodium lignosulfonate or calcium lignin sulphonate or ammonium lignosulphonate.
The described sulfonated lignin of step (3) are to add with the form of solution.
The addition of described emulsifying agent, by emulsifying agent admittedly containing thing, be 0.1 ‰-4 ‰, in every 1000 g coal tar emulsions (coal tar+water), add 0.1g-4 g emulsifying agent.Milk sap after the coal tar emulsion here refers to coal tar and adds water, the quality that the described amount adding water is water accounts for the mass percent of coal tar emulsion (coal tar+water), adopt the prepared emulsifying agent of the present invention to be applied in coal tar emulsion, wherein amount of water is 10%-50%, in coal tar emulsion, contains the water that quality is 10%-50%.The object that coal tar adds water is: (1) " microexplosion " principle: in water-in-oil emulsified, oil is external phase, water is disperse phase, in the time that nozzle atomization is burnt, in the extremely short time, the water droplet temperature that wraps in oil particles inside under the effect of the high temperature vaporization that raises rapidly, volume sharply expands, in the time that temperature is raised to 300 DEG C, volume may be expanded to 1650 times under normal temperature, this pops the oil droplet moment of atomization, become less oil droplet, produce " secondary-atomizing ", increase substantially with regard to the contact area that makes oil fuel and air like this, can be abundant with air mixed, reach perfect combustion, (2) at high temperature, red-hot carbon granule and water vapour generation water-gas reaction, produce inflammable gas CO and H
2therefore speed and the efficiency of burning are all greatly improved, and the carbon black or the amount of coke that retain are become seldom, have improved the rate of utilization of fuel, (3) temperature that can control combustion flame, avoids localized hyperthermia. and it is burnt under constant temperature.
The emulsification that adds water in coal tar can improve the directly various drawbacks of burning of coal tar, as spray tip coking, incomplete combustion etc.Water content in coal tar emulsion is directly proportional to the emulsifying property of emulsifying agent, and water content is larger, and the emulsifying capacity of emulsifying agent is stronger, and the steady time of emulsification coal tar is also longer.Meanwhile, the amount of water of wide region can meet the demand of coal tar in different industrial processes, and range of application is wider.
The prepared emulsifying agent using method of the present invention is as follows:
(1) coal tar is carried out to preheating with the temperature of 70 DEG C, emulsifying agent is added to emulsification pretreatment in preheated coal tar, then add water to carry out emulsification pretreatment; Or
(2) coal tar is carried out to preheating with the temperature of 70 DEG C, emulsifying agent is added to the water and is mixed, then add and in coal tar, carry out emulsification pretreatment.
In above-mentioned two kinds of methods, with the second using method the best, this is because by the first using method, if emulsifying agent and water are added respectively in coal tar and carries out emulsification pretreatment, because emulsification is inhomogeneous, the emulsifying effectiveness obtaining may non-the best; And press the second using method, and emulsifying agent is added in water, i.e. " dilution ", then be added to together in coal tar, or emulsifying agent is first added in coal tar, then be added to the water, carries out the emulsifying effectiveness that emulsification obtains relatively better like this.
The coal tar emulsifying agent that the present invention is prepared, taking NAPTHALENE FLAKES. (INDUSTRIAL GRADE） as raw material, under heated condition, after sulfuric acid sulfonation, obtain naphthene sulfonic acid, obtain the naphthalene sulfonic acidformaldehyde condensation product aqueous solution with formaldehyde solution condensation again, then with sulfonated lignin aqueous solution, obtain the xylogen naphthalene sulfonic acidformaldehyde condensation product aqueous solution with formaldehyde solution condensation, finally adopt alkali lye that pH value is adjusted to 10-13, be emulsifying agent.The emulsifying agent xylogen naphthalene sulfonic acidformaldehyde condensation product that adopts the method for the invention to prepare, due to adding of naphthyl, aromatic nucleus content increases, and the component of coal tar mostly is aromatic hydrocarbons or aromatic series oxygenatedchemicals, according to similar compatibility principle, the absorption property of this emulsifying agent is strengthened, and can be adsorbed on preferably in coal tar; In emulsifying agent xylogen naphthalene sulfonic acidformaldehyde condensation product, there are a large amount of hydroxyls and sulfonate radical simultaneously, wetting ability is strong, the wetting ability of emulsifying agent is strengthened greatly, coal tar and water can be dissolved each other with arbitrary proportion, this emulsifying capacity that prepared emulsifying agent of the present invention is described is strong, can meet the industrial requirements of different moisture content in coal tar emulsion, applied range.
Emulsifying agent prepared by the method for the invention is raw materials used cheap, and wide material sources, are beneficial to environmental protection; In coal tar, add-on is few, emulsify well, and emulsification condition requires low, easy to use, coal tar and water can be dissolved each other with arbitrary proportion, can meet the industrial requirements of different moisture content in coal tar emulsion, applied range.
Embodiment
Embodiment 1
A preparation method for coal tar emulsifying agent, its concrete preparation process is as follows:
(1) NAPTHALENE FLAKES. (INDUSTRIAL GRADE） 25.6g is heated to 120 DEG C of thawings, the vitriol oil 28g that dropping massfraction is 70%, is at 120 DEG C, to react 2 hours in temperature, obtains naphthene sulfonic acid;
(2) being 35% formaldehyde solution 13.7g to dripping massfraction in step (1) gained naphthene sulfonic acid, is at 100 DEG C, to react 4 hours in temperature, is dissolved in water, and obtains the aqueous solution that contains 50g naphthalene sulfonic acidformaldehyde condensation product;
(3) step (2) the gained naphthalene sulfonic acidformaldehyde condensation product aqueous solution and the aqueous solution that contains 250g sodium lignosulfonate, drip again massfraction and be 35% formaldehyde solution 476.2g, be at 100 DEG C, to react 2 hours in temperature, obtain the xylogen naphthalene sulfonic acidformaldehyde condensation product aqueous solution, adopt ammoniacal liquor to regulate pH value to 10, be emulsifying agent.
Embodiment 2
A preparation method for coal tar emulsifying agent, its concrete preparation process is as follows:
(1) NAPTHALENE FLAKES. (INDUSTRIAL GRADE） 12.8Kg is heated to 120 DEG C of thawings, the vitriol oil 12.9Kg that dropping massfraction is 99%, is at 140 DEG C, to react 4 hours in temperature, obtains naphthene sulfonic acid;
(2) being 40% formaldehyde solution 7.5Kg to dripping massfraction in step (1) gained naphthene sulfonic acid, is at 120 DEG C, to react 2 hours in temperature, is dissolved in water, and obtains the aqueous solution that contains 28.5Kg naphthalene sulfonic acidformaldehyde condensation product;
(3) step (2) the gained naphthalene sulfonic acidformaldehyde condensation product aqueous solution and the aqueous solution that contains 71.3Kg calcium lignin sulphonate, drip again massfraction and be 40% formaldehyde solution 71.3Kg, be at 90 DEG C, to react 4 hours in temperature, obtain the xylogen naphthalene sulfonic acidformaldehyde condensation product aqueous solution, adopt sodium hydroxide solution to regulate pH value to 12, be emulsifying agent.
Embodiment 3
A preparation method for coal tar emulsifying agent, its concrete preparation process is as follows:
(1) NAPTHALENE FLAKES. (INDUSTRIAL GRADE） 128g is heated to 120 DEG C of thawings, drips containing SO
3massfraction is 10% oleum 127.2g, is at 160 DEG C, to react 3 hours in temperature, obtains naphthene sulfonic acid;
(2) being 38% formaldehyde solution 102.6g to dripping massfraction in step (1) gained naphthene sulfonic acid, is at 110 DEG C, to react 3 hours in temperature, is dissolved in water, and obtains the aqueous solution that contains 294.2g naphthalene sulfonic acidformaldehyde condensation product;
(3) step (2) the gained naphthalene sulfonic acidformaldehyde condensation product aqueous solution and the aqueous solution that contains 588.4g calcium lignin sulphonate, drip again massfraction and be 38% formaldehyde solution 774.2g, be at 95 DEG C, to react 3 hours in temperature, obtain the xylogen naphthalene sulfonic acidformaldehyde condensation product aqueous solution, adopt potassium hydroxide solution to regulate pH value to 13, be emulsifying agent.
Embodiment 4
A preparation method for coal tar emulsifying agent, its concrete preparation process is as follows:
(1) NAPTHALENE FLAKES. (INDUSTRIAL GRADE） 38.4Kg is heated to 120 DEG C of thawings, drips containing SO
3massfraction is 66% oleum 49.8Kg, is at 150 DEG C, to react 2.5 hours in temperature, obtains naphthene sulfonic acid;
(2) being 36% formaldehyde solution 300Kg to dripping massfraction in step (1) gained naphthene sulfonic acid, is at 105 DEG C, to react 3.5 hours in temperature, is dissolved in water, and obtains the aqueous solution that contains 196.2Kg naphthalene sulfonic acidformaldehyde condensation product;
(3) step (2) the gained naphthalene sulfonic acidformaldehyde condensation product aqueous solution and the aqueous solution that contains 654Kg sodium lignosulfonate, drip again massfraction and be 36% formaldehyde solution 1362.5Kg, be at 98 DEG C, to react 2.5 hours in temperature, obtain the xylogen naphthalene sulfonic acidformaldehyde condensation product aqueous solution, adopt ammonia soln and sodium hydroxide solution to regulate pH value to 11, be emulsifying agent.
Test example
Test example 1
By in emulsifying agent admittedly containing thing, get emulsifying agent 2.0g prepared by embodiment 1 and be dissolved in 90mL water, then join in 500mL coal tar with in 2000 r/min shearing rate emulsification 30 min, 70 DEG C of standing 48h of constant temperature, anhydrous separating out, then leaves standstill 24h, anhydrous separating out under room temperature.
Test example 2
By in emulsifying agent admittedly containing thing, get emulsifying agent 1.8g prepared by embodiment 2 and be dissolved in 100 mL water, join in 570 mL coal tar with in 2000 r/min shearing rate emulsification 30 min, 70 DEG C of standing 48h of constant temperature, anhydrous separating out, then leaves standstill 24h, anhydrous separating out under room temperature.
Test example 3
By in emulsifying agent admittedly containing thing, get emulsifying agent 2.8g prepared by embodiment 3 and be dissolved in 100 mL water, join in 580 mL coal tar with in 2000 r/min shearing rate emulsification 30 min, 70 DEG C of standing 48h of constant temperature, anhydrous separating out, then leaves standstill 24h, anhydrous separating out under room temperature.
Test example 4
By in emulsifying agent admittedly containing thing, get emulsifying agent 0.605g prepared by embodiment 4 and be dissolved in 105 mL water, join in 600 mL coal tar with in 2000 r/min shearing rate emulsification 30 min, 70 DEG C of standing 48h of constant temperature, anhydrous separating out, then leaves standstill 24h, anhydrous separating out under room temperature.
Can find out from test example 1-4, anhydrous separating out illustrates that the emulsifying capacity of emulsifying agent is better, and coal tar and water do not have layering, the existence that emulsification coal tar can be stable; And compared with existing emulsifying agent, in coal tar amount of water identical and can the condition of stable existence under, by emulsifying agent admittedly containing thing, the add-on of emulsifying agent prepared by the present invention is 0.1 ‰-4 ‰, and the add-on of commercial emulsifier is all more than 5 ‰.
Claims (10)
1. a preparation method for coal tar emulsifying agent, is characterized in that: its concrete preparation process is as follows:
(1), taking NAPTHALENE FLAKES. (INDUSTRIAL GRADE） as raw material, under heated condition, after sulfuric acid sulfonation, obtain naphthene sulfonic acid;
(2) under heated condition, in step (1) gained naphthene sulfonic acid, drip formaldehyde solution, be dissolved in water, obtain the naphthalene sulfonic acidformaldehyde condensation product aqueous solution;
(3) step (2) the gained naphthalene sulfonic acidformaldehyde condensation product aqueous solution and sulfonated lignin aqueous solution, under heated condition, then drip formaldehyde solution, obtain the xylogen naphthalene sulfonic acidformaldehyde condensation product aqueous solution, adopt alkali lye to regulate pH value to 10-13, be emulsifying agent.
2. the preparation method of coal tar emulsifying agent according to claim 1, is characterized in that: the described sulfuric acid of step (1) is that massfraction is the vitriol oil of 70%-99% or contains SO
3massfraction is the oleum of 10%-66%.
3. the preparation method of coal tar emulsifying agent according to claim 1, is characterized in that: the mol ratio of the described NAPTHALENE FLAKES. (INDUSTRIAL GRADE） of step (1) and sulfuric acid is 1:1-1.3.
4. the preparation method of coal tar emulsifying agent according to claim 1, is characterized in that: the temperature of reaction under the described heated condition of step (1) is 120-160 DEG C, and the reaction times is 2-4 hour.
5. the preparation method of coal tar emulsifying agent according to claim 1, is characterized in that: in the described NAPTHALENE FLAKES. (INDUSTRIAL GRADE） of step (2) and formaldehyde solution, the mol ratio of formaldehyde is 1:0.8-1.3.
6. the preparation method of coal tar emulsifying agent according to claim 1, is characterized in that: the temperature of reaction under the described heated condition of step (2) is 100-120 DEG C, and the reaction times is 2-4 hour.
7. the preparation method of coal tar emulsifying agent according to claim 1, is characterized in that: the described sulfonated lignin of step (3): naphthalene sulfonic acidformaldehyde condensation product: the mass ratio of formaldehyde is 1:0.2-0.5:0.3-0.5.
8. the preparation method of coal tar emulsifying agent according to claim 1, is characterized in that: the temperature of reaction under the described heated condition of step (3) is 90-100 DEG C, and the reaction times is 2-4h.
9. the preparation method of coal tar emulsifying agent according to claim 1, is characterized in that: the described sulfonated lignin of step (3) are the one in sodium lignosulfonate or calcium lignin sulphonate or ammonium lignosulphonate.
10. the preparation method of coal tar emulsifying agent according to claim 1, is characterized in that: the described alkali lye of step (3) is one or more in ammoniacal liquor or sodium hydroxide solution or potassium hydroxide solution.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110747021A (en) * | 2018-07-24 | 2020-02-04 | 国家能源投资集团有限责任公司 | Coal water slurry dispersant, preparation method and application thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62169895A (en) * | 1986-01-21 | 1987-07-27 | Sanyo Kokusaku Pulp Co Ltd | Dispersant for coal-water slurry |
| CN102250655A (en) * | 2011-06-10 | 2011-11-23 | 天津市双盛化学助剂工贸有限公司 | Preparation method of high-fluidity gasified water-coal slurry dispersant |
| CN102295964A (en) * | 2011-07-21 | 2011-12-28 | 陕西科技大学 | Naphthalene-system coal water slurry dispersant and preparation method thereof |
-
2014
- 2014-04-09 CN CN201410139279.1A patent/CN103937565B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62169895A (en) * | 1986-01-21 | 1987-07-27 | Sanyo Kokusaku Pulp Co Ltd | Dispersant for coal-water slurry |
| CN102250655A (en) * | 2011-06-10 | 2011-11-23 | 天津市双盛化学助剂工贸有限公司 | Preparation method of high-fluidity gasified water-coal slurry dispersant |
| CN102295964A (en) * | 2011-07-21 | 2011-12-28 | 陕西科技大学 | Naphthalene-system coal water slurry dispersant and preparation method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110747021A (en) * | 2018-07-24 | 2020-02-04 | 国家能源投资集团有限责任公司 | Coal water slurry dispersant, preparation method and application thereof |
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