CN108315068A - Method for water-coal-slurry viscosity reduction - Google Patents
Method for water-coal-slurry viscosity reduction Download PDFInfo
- Publication number
- CN108315068A CN108315068A CN201810299473.4A CN201810299473A CN108315068A CN 108315068 A CN108315068 A CN 108315068A CN 201810299473 A CN201810299473 A CN 201810299473A CN 108315068 A CN108315068 A CN 108315068A
- Authority
- CN
- China
- Prior art keywords
- coal
- thinner
- water
- slurry
- acid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L1/00—Liquid carbonaceous fuels
- C10L1/32—Liquid carbonaceous fuels consisting of coal-oil suspensions or aqueous emulsions or oil emulsions
-
- 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
- C08F210/00—Copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond
- C08F210/14—Monomers containing five or more carbon atoms
-
- 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
- C08F212/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring
- C08F212/02—Monomers containing only one unsaturated aliphatic radical
- C08F212/04—Monomers containing only one unsaturated aliphatic radical containing one ring
- C08F212/06—Hydrocarbons
- C08F212/08—Styrene
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Engineering & Computer Science (AREA)
- General Chemical & Material Sciences (AREA)
- Emulsifying, Dispersing, Foam-Producing Or Wetting Agents (AREA)
Abstract
The present invention relates to the methods for water-coal-slurry viscosity reduction, it mainly solves the problems, such as that existing water-coal-slurry thinner viscosity reducing effect is poor, by using the method for water-coal-slurry viscosity reduction, is included in the presence of thinner, the apparent viscosity and yield stress of water-coal-slurry are substantially reduced, and mobile performance substantially improves：The preparation of the wherein described thinner includes free radical polymerization synthesis intermediate product, chemical modification synthesis thinner and purification drying steps, and the thinner raw material composition general formula is expressed as：MαxSyAaBbCcDd, wherein M is maleic anhydride, and α is alhpa olefin, and S is styrene, and A is initiator, and B is modifying agent, and C is catalyst, and D is the technical solution of solvent, preferably solves the technical problem, be can be applied in industrial water-coal-slurry storage-stable and pumping transport.
Description
Technical field
The present invention relates to the methods for water-coal-slurry viscosity reduction.
Background technology
Since reform and opening-up, China's economic grows continuously and fast, and becomes the second in the world more than Japan in one action in 2010
Big economy.2015, world economy continued downturn, and China be in structural adjustment, transition and upgrade new normality under, GDP is still
It is so maintained at 6.9% high speed development level, is still the major impetus for pushing development of world economy, weight is made for world economy
Big contribution.The behind of China's economic high speed development not only needs the support of science and technology, also growing day by day to the demand of fossil energy.
The lasting development of China, the demand to the energy constantly expand, and make limited energy resources increasingly depleted.It is united according to world energy sources
It counts, the reserves of coal are more relatively rich than oil and natural gas in the Sinopec energy, it is contemplated that decades can only be also used, thus
Rationally efficiently using as trend of the times.
The production of energy in China and energy consumption situation are determined by the energy resource structure in China, the energy of China's nearly more than ten years
Source produces in structure, and the accounting of coal is all up to 85% or so, and the ratio that coal consumption accounts for consumed fossil energy is also up to
70% or more.Traditional extensive coal-fired mode certainly will will produce a large amount of exhaust gas（CO2、NOX、SOX）, dust（Such as PM2.5）, with
Cause the serious problem of environmental pollution such as acid rain, greenhouse effects, haze.In order to solve the contradiction of development and environment, China carries
A series of policies and laws and regulations are gone out, on the one hand should increase to regenerative resource（Such as wind energy, solar energy, nuclear energy）Profit
With dynamics, on the other hand existing coal resources are cleanly and efficiently used.For this purpose, China's researcher propose it is a series of
Clean coal technology, such as water-coal-slurry, coal liquefaction, Coal Gasification, fluidized bed combustion, integrated coal gasification combined cycle (IGCC),
Stack gas cleaning, the technologies such as fuel cell.Water-coal-slurry be coal liquefaction best achievement and coal-cleaning utilization it is most cheap
Practical technique, water-coal-slurry can effectively reduce environmental pollution as oil-substituted fuel.COAL-WATER SLURRY TECHNOLOGY originates from the 1970s
World oil crisis, at that time it was recognized that the clean energy resourcies such as petroleum gas are not innumerable nexhaustible.Currently,
Many countries have had highly developed technology in the world, such as the U.S., Russia, Japan.China is also repeatedly by water-coal-slurry skill
Art achieves abundant technological achievement, and be in rank first, but still need as national Scientific And Technical brainstorm project
It furthers investigate energetically, makes the more perfect maturation of the COAL-WATER SLURRY TECHNOLOGY in China.
In the narrow sense, water-coal-slurry is passed through by 60% ~ 70% coal, 29% ~ 39% water and about 1% chemical addition agent
A kind of coal based fluid fuel that Physical Processing obtains；In broad terms, with the development of COAL-WATER SLURRY TECHNOLOGY, it is novel that some are derived
Mix water-coal-slurry, such as sludge water-coal-slurry, oil coal water mixture, fatty alcohol water-coal-slurry etc..The alternative conventional energy resource of water-coal-slurry uses, and has
Efficiently, the advantages that environmentally friendly, convenient, calorific value is equivalent to the half of fuel oil, is widely used to various boilers at present.Water-coal-slurry
Technology includes mainly technology of preparing, storaging and transport technology, burning utilizes technology and green technology, these four technologies to respectively represent water-coal-slurry
The four-stage of application, the performance height for preparing water-coal-slurry slurry directly affect the difficulty or ease of handling storage and transportation and utilization ratio of burning
Just, and efficiency of combustion is directly related with environmental protection.Therefore, technology of preparing is a ring important in whole process, this is also to prepare
One of the reason of technology is paid close attention to by scientific research personnel.And additive essential chemical substance when being slurrying, although its dosage
It less than 1 the percent of water-coal-slurry, but plays a very important role, additive can not only reduce the apparent viscosity of water-coal-slurry, carry
High fluidity and stability also help the water-coal-slurry for preparing high concentration, improve calorific value.Thinner is that most important water-coal-slurry adds
Add agent, thinner that can disperse coal grain, reduce viscosity, to reduce Transport resistance, while thinner also has stabilization；Viscosity reduction
Agent mainly makes coal slurry not stratified, and storage time extends.It can be seen that research and development utilize novel cheap thinner to water-coal-slurry skill
The development of art is significant.
Efficient thinner is a kind of key means for preparing high-concentration coal-water slurry, in particular for low-order coal, because of its hardly possible
It is slurried, the quality of thinner is to water-coal-slurry product quality（Such as concentration, viscosity, stability, rheological property）With significant shadow
It rings.G. the wet method slurrying such as Atesok, using two kinds of thinners of kayexalate and naphthalene sulfonic acid formaldehyde condensation polymer respectively with
Two kinds of coal slurrying, studies have shown that after thinner is added in pulping process, grindability is improved, and slurry viscosity reduces, and saves significantly
The cost of pulping process is saved.But as slurrying coal is increasingly diversified, pulping process gradually develop it is perfect, thinner viscosity reduction and
Performance for stability cannot adapt to the variation requirement of coal and technique completely.Therefore, it is necessary to targetedly develop viscosity reducing effect
Water-coal-slurry thinner good, stability is good.
Invention content
The present invention is to solve the technical problem of existing water-coal-slurry thinner viscosity reducing effect difference, provides a kind of new be used for
The method of water-coal-slurry viscosity reduction, this method have the characteristics that viscosity reducing effect is good.
In order to solve the above technical problems, technical scheme is as follows：
For the method for water-coal-slurry viscosity reduction, it is included in the presence of thinner, the apparent viscosity and yield stress of water-coal-slurry obviously drop
Low, mobile performance substantially improves：The preparation of the wherein described thinner includes free radical polymerization synthesis intermediate product, chemical modification conjunction
At thinner and purification drying steps, the thinner raw material composition general formula is expressed as：MαxSyAaBbCcDd, wherein M is maleic acid
Acid anhydride, α are alpha-olefin（Selected from laurylene to the one or more of icosa alkene）, S is styrene, and A is initiator, including is selected from peroxide
Change cyclohexanone, dibenzoyl peroxide, dimethylformamide, dilauroyl peroxide, the benzoyl peroxide tert-butyl ester, peroxidating two
Tertiary butyl, cumyl peroxide, tert-butyl hydroperoxide, di-isopropyl peroxydicarbonate, azodiisobutyronitrile, azo two
Different heptonitrile, azo-bis-iso-dimethyl, azo diisobutyl amidine hydrochloride, two isobutyl imidazoline hydrochloride of azo, azo two
It is one or more in cyanopentanoic acid, azo dicyclohexyl formonitrile HCN；B is modifying agent, including is selected from ethyl alcohol, propyl alcohol, butanol, different
Butanol, isoamyl alcohol, active-amyl alcohol, benzyl carbinol, ethylene glycol, polyethylene glycol, propylene glycol, polypropylene glycol, butanediol, polytetramethylene glycol,
The amine of pentanediol, glycerine, undecyl alcohol ~ docosanol, undecylamine ~ 20, fatty alcohol polyoxyethylene ether, alkylphenol-polyethenoxy
Ether, anionic polyacrylamide, sulfamic acid sodium, sodium cyclohexylsulfamate, aminobenzenesulfonic acid and its salt, Amcide Ammate,
Cyclohexane sulfamic acid and its salt, aminobenzoic acid and its salt, dimethylaminobenzenesulfonic acid and its salt, naphthylamine sulfonic acid and its salt,
Hydroxy amino naphthalene sulfonic acids and its salt, aminoethyl naphthalene sulfonic acids and its salt, it is one or more in dimethylamino naphthalene sulfonic acids and its salt,
C is catalyst, selected from p-methyl benzenesulfonic acid, methanesulfonic acid, dimethylamino naphthyridine, thionyl chloride, hydrochloric acid, hydrobromic acid, hydrofluoric acid, carbon
It is one or more in acid, dilute sulfuric acid, phosphoric acid, boric acid, sodium hydroxide, potassium hydroxide, ammonium hydroxide；D is solvent, including benzene, toluene,
Paraxylene, ortho-xylene, repefral, ethyl acetate, acetone, tetrahydrofuran, propyl alcohol, chloroform, dichloromethane,
It is one or more in dimethyl sulfoxide, dimethylformamide.X is the molar ratio of alpha-olefin and maleic anhydride, x values 0.2 ~ 5.0；
Y is the molar ratio of styrene and maleic anhydride, y values 0.2 ~ 5.0；A is the molar ratio of initiator and maleic anhydride, a values
0.01~2.0；B is the molar ratio of modifying agent and maleic anhydride, b values 0.2 ~ 5.0；C is mole of catalyst and maleic anhydride
Than c values 0.01 ~ 2.0；D is the molar ratio of solvent and maleic anhydride, d values 5.0 ~ 20.0.
In above-mentioned technical proposal, water-coal-slurry sample used comes from Yulin shenfu coal.
In above-mentioned technical proposal, after water-coal-slurry thinner is added, changed using rheometer test viscosity and yield stress.
In above-mentioned technical proposal, the water-coal-slurry thinner mass fraction is 0.01% ~ 3%, preferably 0.2 ~ 0.8%.
In above-mentioned technical proposal, the test temperature of the viscosity and yield stress is -20 ~ 200 DEG C, for ease of facilitating reality
Using being measured for 20 DEG C.
In above-mentioned technical proposal, the testing time of the viscosity and yield stress is preferably 1min ~ 50min.
In above-mentioned technical proposal, as one of preferred technical solution, B is preferably simultaneously including polytetramethylene glycol and amino naphthalenes sulphur
Acid, polytetramethylene glycol have synergistic function with naphthylamine sulfonic acid in terms of improving water-coal-slurry viscosity reduction.
In above-mentioned technical proposal, two, the B as preferred technical solution preferably includes polytetramethylene glycol and hydroxy amino simultaneously
Naphthalene sulfonic acids, polytetramethylene glycol have synergistic effect with hydroxy amino naphthalene sulfonic acids in terms of improving water-coal-slurry viscosity reduction.
In above-mentioned technical proposal, three, the B as preferred technical solution preferably includes polytetramethylene glycol and dimethylamino simultaneously
Naphthalene sulfonic acids, polytetramethylene glycol have synergistic effect with dimethylamino naphthalene sulfonic acids in terms of improving water-coal-slurry viscosity reduction.
In above-mentioned technical proposal, as more preferred one of technical solution, B is simultaneously including polytetramethylene glycol, amino naphthalenes sulphur
Acid and hydroxy amino naphthalene sulfonic acids, three have triple combination synergistic effect in terms of improving water-coal-slurry viscosity reduction.
In above-mentioned technical proposal, two, the B as more preferred technical solution is simultaneously including polytetramethylene glycol, amino naphthalenes sulphur
Acid and dimethylamino naphthalene sulfonic acids, three have triple combination synergistic effect in terms of improving water-coal-slurry viscosity reduction.
In above-mentioned technical proposal, three, the B as more preferred technical solution is simultaneously including polytetramethylene glycol, hydroxy amino
Naphthalene sulfonic acids and dimethylamino naphthalene sulfonic acids, three have triple combination synergistic effect in terms of improving water-coal-slurry viscosity reduction.
In above-mentioned technical proposal, four, the B as more preferred technical solution is simultaneously including polytetramethylene glycol, amino naphthalenes sulphur
Acid, hydroxy amino naphthalene sulfonic acids and dimethylamino naphthalene sulfonic acids, four there is four-place combination collaboration to make in terms of improving water-coal-slurry viscosity reduction
With.
In above-mentioned technical proposal, the thinner raw material composition more specific example of general formula can be but not limited to：
[maleic anhydride] [laurylene]0.2~5.0[styrene]0.2~5.0[dilauroyl peroxide]0.01~2.0[polytetramethylene glycol]0.1~2.5[ammonia
Base naphthalene sulfonic acids]0.1~2.5[p-methyl benzenesulfonic acid]0.005~1.0[potassium hydroxide]0.005~1.0[chloroform]5.0~20.0
[maleic anhydride] [laurylene]0.2~5.0[styrene]0.2~5.0[dilauroyl peroxide]0.01~2.0[polytetramethylene glycol]0.1~2.5[ammonia
Base croceine acid]0.1~2.5[p-methyl benzenesulfonic acid]0.005~1.0[potassium hydroxide]0.005~1.0[chloroform]5.0~20.0
[maleic anhydride] [laurylene]0.2~5.0[styrene]0.2~5.0[dilauroyl peroxide]0.01~2.0[polytetramethylene glycol]0.1~2.5[two
Methylamino naphthalene sulfonic acids]0.1~2.5[p-methyl benzenesulfonic acid]0.005~1.0[potassium hydroxide]0.005~1.0[chloroform]5.0~20.0
[maleic anhydride] [laurylene]0.2~5.0[styrene]0.2~5.0[dilauroyl peroxide]0.01~2.0[polytetramethylene glycol]0.1~2.0[ammonia
Base naphthalene sulfonic acids]0.05~1.5[hydroxy amino naphthalene sulfonic acids]0.05~1.5[p-methyl benzenesulfonic acid]0.005~1.0[potassium hydroxide]0.005~1.0[chlorine
It is imitative]5.0~20.0
[maleic anhydride] [laurylene]0.2~5.0[styrene]0.2~5.0[dilauroyl peroxide]0.01~2.0[polytetramethylene glycol]0.1~2.0[ammonia
Base naphthalene sulfonic acids]0.05~1.5[dimethylamino naphthalene sulfonic acids]0.05~1.5[p-methyl benzenesulfonic acid]0.005~1.0[potassium hydroxide]0.005~1.0[chlorine
It is imitative]5.0~20.0
[maleic anhydride] [laurylene]0.2~5.0[styrene]0.2~5.0[dilauroyl peroxide]0.01~2.0[polytetramethylene glycol]0.1~2.0[ammonia
Base croceine acid]0.05~1.5[dimethylamino naphthalene sulfonic acids]0.05~1.5[p-methyl benzenesulfonic acid]0.005~1.0[potassium hydroxide]0.005~1.0
[chloroform]5.0~20.0
[maleic anhydride] [laurylene]0.2~5.0[styrene]0.2~5.0[dilauroyl peroxide]0.01~2.0[polytetramethylene glycol]0.1~2.0[ammonia
Base naphthalene sulfonic acids]0.03~1.0[hydroxy amino naphthalene sulfonic acids]0.03~1.0[dimethylamino naphthalene sulfonic acids]0.04~1.0[p-methyl benzenesulfonic acid]0.005~1.0
[potassium hydroxide]0.005~1.0[chloroform]5.0~20.0
In above-mentioned technical proposal, the water-coal-slurry thinner molecular weight is 1000 ~ 100000.
In above-mentioned technical proposal, the water-coal-slurry thinner esterification degree is 0.1 ~ 5.0.
In above-mentioned technical proposal, how raw material components are dissolved and order of addition is not particularly limited, can obtain can
The technique effect of ratio, in this regard, those skilled in the art can reasonably select.For ease of year-on-year, specific embodiment of the invention raw material
Component is to be redissolved after mixing.
In above-mentioned technical proposal, the preparation process of the efficient water-coal-slurry thinner, including：
Free radical polymerization synthesizes intermediate product；
Chemical modification synthesizes thinner；
Purify drying.
In above-mentioned technical proposal, the method for purification is not particularly limited, as long as can be unreacted in above-mentioned thinner
Raw material or by-product remove, and those skilled in the art can carry out reasonable selection application to the method for purification.
In above-mentioned technical proposal, dry condition is not particularly limited, as long as can be above-mentioned thinner by emulsion state
It is turned into solid powder state, those skilled in the art can reasonably select dry condition this and need not
It makes the creative labor.
In above-mentioned technical proposal, only as an example, Raolical polymerizable temperature is 30 ~ 180 DEG C, when reaction a length of 0.5 ~
12 hours.
In above-mentioned technical proposal, only as an example, chemical modification reaction temperature is 30 ~ 180 DEG C, a length of 0.5 ~ 12 when reaction
Hour.
In above-mentioned technical proposal, the efficient water-coal-slurry thinner may be used following mode and prepare, specific as follows：
1, free radical polymerization synthesizes intermediate product
Maleic anhydride, alpha-olefin, styrene, initiator, solvent are added in reactor, mechanical agitation makes it completely dissolved, 30 ~
It is reacted 0.5 ~ 12 hour in 180 DEG C, obtains intermediate product.The dissolving step and temperature control step are not particularly limited, specific molten
The program and process conditions those skilled in the art of solution and temperature control can reasonably select.
2, chemical modification synthesizes thinner
Modifying agent and catalyst are continuously added to reactor in 1, is reacted 0.5 ~ 12 hour in 30 ~ 180 DEG C, obtains the viscosity reduction
Agent.The dissolving step and temperature control step are not particularly limited, the program and process conditions this field skill of specific dissolving and temperature control
Art personnel can reasonably select.
3, drying is purified
The temperature of thinner in 2 is down to 20 ~ 90 DEG C, thinner is then added to organic solvent（Such as methanol, ethyl alcohol, third
Alcohol etc.）In, then the solid of precipitation is added in 20 ~ 90 DEG C of water and is cleaned, repeatedly, most afterwards through filtering, being dried to obtain viscosity reduction
Agent solid powder.
The water-coal-slurry thinner prepared in this way is unusually good in terms of viscosity reducing effect.
The present invention thinner evaluation method is as follows：
Rheometer：Austrian 501 advanced rotational rheometers of Anton Paar Physica MCR, use coaxial cylinders and cross
Paddle rotor ST-22-4V-40 is tested；
Thinner amount of fill：50 grams；
Test temperature：20℃；
Test method：（One）Apparent viscosity：It is 100s in shear velocity-1Under, 3s takes a data, 3min is tested altogether, with last
One point is as a result；（Two）Yield stress：Shear stress increases to 1000Pa from 1Pa by logarithm, takes corresponding viscosity number, when
When viscosity declines suddenly, corresponding shear stress is yield stress.
Using thinner of the present invention, water-coal-slurry sample viscosity reducing effect achieves preferable technique effect up to 95%, can use
In industrial water-coal-slurry storage-stable and pumping transport.
Description of the drawings
Here is to be further illustrated in conjunction with the accompanying drawings and embodiments to patent of the present invention.
Fig. 1 is the variation diagram that viscosity in aqueous coal slurries reduced rate and yield stress reduced rate are numbered with embodiment.
Specific implementation mode
【Embodiment 1】
1, free radical polymerization synthesizes intermediate product
Into the three-necked flask of 500ml be added 1mol chloroform, then be separately added into 0.1mol maleic anhydrides, 0.12mol laurylenes,
0.03mol dilauroyl peroxides, mechanical agitation make it completely dissolved, and are reacted 2 hours at 100 DEG C, then cool the temperature to 70
DEG C, it is slowly added to 0.12mol styrene, the reaction was continued 5 hours, obtains intermediate product.
2, chemical modification synthesizes thinner
0.06mol polytetramethylene glycols and 0.02mol p-methyl benzenesulfonic acids, stirring and dissolving, at 100 DEG C are continuously added into three-necked flask
In the reaction was continued 5 hours, obtain the thinner.
3, drying is purified
The temperature of thinner in 2 is down to 30 DEG C, is then added into ethyl alcohol, then the solid of precipitation is added to 30 DEG C of water
Middle cleaning repeatedly most forms following thinner through filtering, being dried to obtain raw material afterwards：
[maleic anhydride] [laurylene]1.2[styrene]1.2[dilauroyl peroxide]0.3[polytetramethylene glycol]0.6[to methylbenzene sulphur
Acid]0.2[chloroform]10.0
4, thinner is evaluated
Investigate viscosity in aqueous coal slurries reduced rate and yield stress reduced rate.Thinner raw material is formed and evaluation result for ease of comparing
It is listed in Fig. 1.
【Embodiment 2】
1, free radical polymerization synthesizes intermediate product
Into the three-necked flask of 500ml be added 1mol chloroform, then be separately added into 0.1mol maleic anhydrides, 0.12mol laurylenes,
0.03mol dilauroyl peroxides, mechanical agitation make it completely dissolved, and are reacted 2 hours at 100 DEG C, then cool the temperature to 70
DEG C, it is slowly added to 0.12mol styrene, the reaction was continued 5 hours, obtains intermediate product.
2, chemical modification synthesizes thinner
0.06mol naphthylamine sulfonic acids and 0.02mol potassium hydroxide, stirring and dissolving, in 100 DEG C are continuously added into three-necked flask
The reaction was continued 5 hours, obtains the thinner.
3, drying is purified
The temperature of thinner in 2 is down to 30 DEG C, is then added into ethyl alcohol, then the solid of precipitation is added to 30 DEG C of water
Middle cleaning repeatedly most forms following thinner through filtering, being dried to obtain raw material afterwards：
[maleic anhydride] [laurylene]1.2[styrene]1.2[dilauroyl peroxide]0.3[naphthylamine sulfonic acid]0.6[potassium hydroxide]0.2
[chloroform]10.0
4, thinner is evaluated
Investigate viscosity in aqueous coal slurries reduced rate and yield stress reduced rate.Thinner raw material is formed and evaluation result for ease of comparing
It is listed in Fig. 1.
【Embodiment 3】
1, free radical polymerization synthesizes intermediate product
Into the three-necked flask of 500ml be added 1mol chloroform, then be separately added into 0.1mol maleic anhydrides, 0.12mol laurylenes,
0.03mol dilauroyl peroxides, mechanical agitation make it completely dissolved, and are reacted 2 hours at 100 DEG C, then cool the temperature to 70
DEG C, it is slowly added to 0.12mol styrene, the reaction was continued 5 hours, obtains intermediate product.
2, chemical modification synthesizes thinner
0.06mol hydroxy aminos naphthalene sulfonic acids and 0.02mol potassium hydroxide, stirring and dissolving, 100 are continuously added into three-necked flask
The reaction was continued in DEG C 5 hours, obtains the thinner.
3, drying is purified
The temperature of thinner in 2 is down to 30 DEG C, is then added into ethyl alcohol, then the solid of precipitation is added to 30 DEG C of water
Middle cleaning repeatedly most forms following thinner through filtering, being dried to obtain raw material afterwards：
[maleic anhydride] [laurylene]1.2[styrene]1.2[dilauroyl peroxide]0.3[hydroxy amino naphthalene sulfonic acids]0.6[hydroxide
Potassium]0.2[chloroform]10.0
4, thinner is evaluated
Investigate viscosity in aqueous coal slurries reduced rate and yield stress reduced rate.Thinner raw material is formed and evaluation result for ease of comparing
It is listed in Fig. 1.
【Embodiment 4】
1, free radical polymerization synthesizes intermediate product
Into the three-necked flask of 500ml be added 1mol chloroform, then be separately added into 0.1mol maleic anhydrides, 0.12mol laurylenes,
0.03mol dilauroyl peroxides, mechanical agitation make it completely dissolved, and are reacted 2 hours at 100 DEG C, then cool the temperature to 70
DEG C, it is slowly added to 0.12mol styrene, the reaction was continued 5 hours, obtains intermediate product.
2, chemical modification synthesizes thinner
0.06mol dimethylaminos naphthalene sulfonic acids and 0.02mol potassium hydroxide, stirring and dissolving, 100 are continuously added into three-necked flask
The reaction was continued in DEG C 5 hours, obtains the thinner.
3, drying is purified
The temperature of thinner in 2 is down to 30 DEG C, is then added into ethyl alcohol, then the solid of precipitation is added to 30 DEG C of water
Middle cleaning repeatedly most forms following thinner through filtering, being dried to obtain raw material afterwards：
[maleic anhydride] [laurylene]1.2[styrene]1.2[dilauroyl peroxide]0.3[dimethylamino naphthalene sulfonic acids]0.6[hydroxide
Potassium]0.2[chloroform]10.0
4, thinner is evaluated
Investigate viscosity in aqueous coal slurries reduced rate and yield stress reduced rate.Thinner raw material is formed and evaluation result for ease of comparing
It is listed in Fig. 1.
【Embodiment 5】
1, free radical polymerization synthesizes intermediate product
Into the three-necked flask of 500ml be added 1mol chloroform, then be separately added into 0.1mol maleic anhydrides, 0.12mol laurylenes,
0.03mol dilauroyl peroxides, mechanical agitation make it completely dissolved, and are reacted 2 hours at 100 DEG C, then cool the temperature to 70
DEG C, it is slowly added to 0.12mol styrene, the reaction was continued 5 hours, obtains intermediate product.
2, chemical modification synthesizes thinner
0.03mol polytetramethylene glycols and 0.01mol p-methyl benzenesulfonic acids, stirring and dissolving, at 100 DEG C are continuously added into three-necked flask
Middle reaction 3 hours, is then added 0.03mol naphthylamine sulfonic acids and 0.01mol potassium hydroxide, then reacted 3 hours in 100 DEG C,
Obtain the thinner.
3, drying is purified
The temperature of thinner in 2 is down to 30 DEG C, is then added into ethyl alcohol, then the solid of precipitation is added to 30 DEG C of water
Middle cleaning repeatedly most forms following thinner through filtering, being dried to obtain raw material afterwards：
[maleic anhydride] [laurylene]1.2[styrene]1.2[dilauroyl peroxide]0.3[polytetramethylene glycol]0.3[naphthylamine sulfonic acid]0.3
[p-methyl benzenesulfonic acid]0.1[potassium hydroxide]0.1[chloroform]10.0
4, thinner is evaluated
Investigate viscosity in aqueous coal slurries reduced rate and yield stress reduced rate.Thinner raw material is formed and evaluation result for ease of comparing
It is listed in Fig. 1.
【Embodiment 6】
1, free radical polymerization synthesizes intermediate product
Into the three-necked flask of 500ml be added 1mol chloroform, then be separately added into 0.1mol maleic anhydrides, 0.12mol laurylenes,
0.03mol dilauroyl peroxides, mechanical agitation make it completely dissolved, and are reacted 2 hours at 100 DEG C, then cool the temperature to 70
DEG C, it is slowly added to 0.12mol styrene, the reaction was continued 5 hours, obtains intermediate product.
2, chemical modification synthesizes thinner
0.03mol polytetramethylene glycols and 0.01mol p-methyl benzenesulfonic acids, stirring and dissolving, at 100 DEG C are continuously added into three-necked flask
Then 0.03mol hydroxy aminos naphthalene sulfonic acids and 0.01mol potassium hydroxide is added in middle reaction 3 hours, then reaction 3 is small in 100 DEG C
When, obtain the thinner.
3, drying is purified
The temperature of thinner in 2 is down to 30 DEG C, is then added into ethyl alcohol, then the solid of precipitation is added to 30 DEG C of water
Middle cleaning repeatedly most forms following thinner through filtering, being dried to obtain raw material afterwards：
[maleic anhydride] [laurylene]1.2[styrene]1.2[dilauroyl peroxide]0.3[polytetramethylene glycol]0.3[hydroxy amino naphthalene sulphur
Acid]0.3[p-methyl benzenesulfonic acid]0.1[potassium hydroxide]0.1[chloroform]10.0
4, thinner is evaluated
Investigate viscosity in aqueous coal slurries reduced rate and yield stress reduced rate.Thinner raw material is formed and evaluation result for ease of comparing
It is listed in Fig. 1.
【Embodiment 7】
1, free radical polymerization synthesizes intermediate product
Into the three-necked flask of 500ml be added 1mol chloroform, then be separately added into 0.1mol maleic anhydrides, 0.12mol laurylenes,
0.03mol dilauroyl peroxides, mechanical agitation make it completely dissolved, and are reacted 2 hours at 100 DEG C, then cool the temperature to 70
DEG C, it is slowly added to 0.12mol styrene, the reaction was continued 5 hours, obtains intermediate product.
2, chemical modification synthesizes thinner
0.03mol polytetramethylene glycols and 0.01mol p-methyl benzenesulfonic acids, stirring and dissolving, at 100 DEG C are continuously added into three-necked flask
Then 0.03mol dimethylaminos naphthalene sulfonic acids and 0.01mol potassium hydroxide is added in middle reaction 3 hours, then reaction 3 is small in 100 DEG C
When, obtain the thinner.
3, drying is purified
The temperature of thinner in 2 is down to 30 DEG C, is then added into ethyl alcohol, then the solid of precipitation is added to 30 DEG C of water
Middle cleaning repeatedly most forms following thinner through filtering, being dried to obtain raw material afterwards：
[maleic anhydride] [laurylene]1.2[styrene]1.2[dilauroyl peroxide]0.3[polytetramethylene glycol]0.3[dimethylamino naphthalene sulphur
Acid]0.3[p-methyl benzenesulfonic acid]0.1[potassium hydroxide]0.1[chloroform]10.0
4, thinner is evaluated
Investigate viscosity in aqueous coal slurries reduced rate and yield stress reduced rate.Thinner raw material is formed and evaluation result for ease of comparing
It is listed in Fig. 1.
【Embodiment 8】
1, free radical polymerization synthesizes intermediate product
Into the three-necked flask of 500ml be added 1mol chloroform, then be separately added into 0.1mol maleic anhydrides, 0.12mol laurylenes,
0.03mol dilauroyl peroxides, mechanical agitation make it completely dissolved, and are reacted 2 hours at 100 DEG C, then cool the temperature to 70
DEG C, it is slowly added to 0.12mol styrene, the reaction was continued 5 hours, obtains intermediate product.
2, chemical modification synthesizes thinner
0.03mol polytetramethylene glycols and 0.01mol p-methyl benzenesulfonic acids, stirring and dissolving, at 100 DEG C are continuously added into three-necked flask
Middle reaction 3 hours, is then added 0.015mol naphthylamine sulfonic acids, 0.015mol hydroxy aminos naphthalene sulfonic acids and 0.01mol hydroxides
Potassium, then reacted 3 hours in 100 DEG C, obtain the thinner.
3, drying is purified
The temperature of thinner in 2 is down to 30 DEG C, is then added into ethyl alcohol, then the solid of precipitation is added to 30 DEG C of water
Middle cleaning repeatedly most forms following thinner through filtering, being dried to obtain raw material afterwards：
[maleic anhydride] [laurylene]1.2[styrene]1.2[dilauroyl peroxide]0.3[polytetramethylene glycol]0.3[naphthylamine sulfonic acid]0.15
[hydroxy amino naphthalene sulfonic acids]0.15[p-methyl benzenesulfonic acid]0.1[potassium hydroxide]0.1[chloroform]10.0
4, thinner is evaluated
Investigate viscosity in aqueous coal slurries reduced rate and yield stress reduced rate.Thinner raw material is formed and evaluation result for ease of comparing
It is listed in Fig. 1.
【Embodiment 9】
1, free radical polymerization synthesizes intermediate product
Into the three-necked flask of 500ml be added 1mol chloroform, then be separately added into 0.1mol maleic anhydrides, 0.12mol laurylenes,
0.03mol dilauroyl peroxides, mechanical agitation make it completely dissolved, and are reacted 2 hours at 100 DEG C, then cool the temperature to 70
DEG C, it is slowly added to 0.12mol styrene, the reaction was continued 5 hours, obtains intermediate product.
2, chemical modification synthesizes thinner
0.03mol polytetramethylene glycols and 0.01mol p-methyl benzenesulfonic acids, stirring and dissolving, at 100 DEG C are continuously added into three-necked flask
Middle reaction 3 hours, is then added 0.015mol naphthylamine sulfonic acids, 0.015mol dimethylaminos naphthalene sulfonic acids and 0.01mol hydroxides
Potassium, then reacted 3 hours in 100 DEG C, obtain the thinner.
3, drying is purified
The temperature of thinner in 2 is down to 30 DEG C, is then added into ethyl alcohol, then the solid of precipitation is added to 30 DEG C of water
Middle cleaning repeatedly most forms following thinner through filtering, being dried to obtain raw material afterwards：
[maleic anhydride] [laurylene]1.2[styrene]1.2[dilauroyl peroxide]0.3[polytetramethylene glycol]0.3[naphthylamine sulfonic acid]0.15
[dimethylamino naphthalene sulfonic acids]0.15[p-methyl benzenesulfonic acid]0.1[potassium hydroxide]0.1[chloroform]10.0
4, thinner is evaluated
Investigate viscosity in aqueous coal slurries reduced rate and yield stress reduced rate.Thinner raw material is formed and evaluation result for ease of comparing
It is listed in Fig. 1.
【Embodiment 10】
1, free radical polymerization synthesizes intermediate product
Into the three-necked flask of 500ml be added 1mol chloroform, then be separately added into 0.1mol maleic anhydrides, 0.12mol laurylenes,
0.03mol dilauroyl peroxides, mechanical agitation make it completely dissolved, and are reacted 2 hours at 100 DEG C, then cool the temperature to 70
DEG C, it is slowly added to 0.12mol styrene, the reaction was continued 5 hours, obtains intermediate product.
2, chemical modification synthesizes thinner
0.03mol polytetramethylene glycols and 0.01mol p-methyl benzenesulfonic acids, stirring and dissolving, at 100 DEG C are continuously added into three-necked flask
Middle reaction 3 hours, is then added 0.015mol hydroxy aminos naphthalene sulfonic acids, 0.015mol dimethylaminos naphthalene sulfonic acids and 0.01mol hydrogen
Potassium oxide, then reacted 3 hours in 100 DEG C, obtain the thinner.
3, drying is purified
The temperature of thinner in 2 is down to 30 DEG C, is then added into ethyl alcohol, then the solid of precipitation is added to 30 DEG C of water
Middle cleaning repeatedly most forms following thinner through filtering, being dried to obtain raw material afterwards：
[maleic anhydride] [laurylene]1.2[styrene]1.2[dilauroyl peroxide]0.3[polytetramethylene glycol]0.3[hydroxy amino naphthalene sulphur
Acid]0.15[dimethylamino naphthalene sulfonic acids]0.15[p-methyl benzenesulfonic acid]0.1[potassium hydroxide]0.1[chloroform]10.0
4, thinner is evaluated
Investigate viscosity in aqueous coal slurries reduced rate and yield stress reduced rate.Thinner raw material is formed and evaluation result for ease of comparing
It is listed in Fig. 1.
【Embodiment 11】
1, free radical polymerization synthesizes intermediate product
Into the three-necked flask of 500ml be added 1mol chloroform, then be separately added into 0.1mol maleic anhydrides, 0.12mol laurylenes,
0.03mol dilauroyl peroxides, mechanical agitation make it completely dissolved, and are reacted 2 hours at 100 DEG C, then cool the temperature to 70
DEG C, it is slowly added to 0.12mol styrene, the reaction was continued 5 hours, obtains intermediate product.
2, chemical modification synthesizes thinner
0.03mol polytetramethylene glycols and 0.01mol p-methyl benzenesulfonic acids, stirring and dissolving, at 100 DEG C are continuously added into three-necked flask
Middle reaction 3 hours, is then added 0.01mol naphthylamine sulfonic acids, 0.01mol hydroxy aminos naphthalene sulfonic acids, 0.01mol dimethylamino naphthalenes
Sulfonic acid and 0.01mol potassium hydroxide, then reacted 3 hours in 100 DEG C, obtain the thinner.
3, drying is purified
The temperature of thinner in 2 is down to 30 DEG C, is then added into ethyl alcohol, then the solid of precipitation is added to 30 DEG C of water
Middle cleaning repeatedly most forms following thinner through filtering, being dried to obtain raw material afterwards：
[maleic anhydride] [laurylene]1.2[styrene]1.2[dilauroyl peroxide]0.3[polytetramethylene glycol]0.3[naphthylamine sulfonic acid]0.1
[hydroxy amino naphthalene sulfonic acids]0.1[dimethylamino naphthalene sulfonic acids]0.1[p-methyl benzenesulfonic acid]0.1[potassium hydroxide]0.1[chloroform]10.0
4, thinner is evaluated
Investigate viscosity in aqueous coal slurries reduced rate and yield stress reduced rate.Thinner raw material is formed and evaluation result for ease of comparing
It is listed in Fig. 1.
Claims (10)
1. for the method for water-coal-slurry viscosity reduction, it is included in the presence of thinner, the apparent viscosity and yield stress of water-coal-slurry are apparent
It reduces, mobile performance substantially improves：The preparation of the wherein described thinner includes free radical polymerization synthesis intermediate product, chemical modification
Thinner and purification drying steps are synthesized, the thinner raw material composition general formula is expressed as：MαxSyAaBbCcDd, wherein M is Malaysia
Acid anhydrides, α are alpha-olefin（Selected from laurylene to the one or more of icosa alkene）, S is styrene, and A is initiator, including is selected from
Peroxyester, dibenzoyl peroxide, dimethylformamide, dilauroyl peroxide, the benzoyl peroxide tert-butyl ester, peroxidating
Di-tert-butyl, cumyl peroxide, tert-butyl hydroperoxide, di-isopropyl peroxydicarbonate, azodiisobutyronitrile, azo
Two different heptonitriles, azo-bis-iso-dimethyl, azo diisobutyl amidine hydrochloride, two isobutyl imidazoline hydrochloride of azo, azo
It is one or more in dicyano valeric acid, azo dicyclohexyl formonitrile HCN；B is modifying agent, including be selected from ethyl alcohol, propyl alcohol, butanol,
Isobutanol, isoamyl alcohol, active-amyl alcohol, benzyl carbinol, ethylene glycol, polyethylene glycol, propylene glycol, polypropylene glycol, butanediol, polybutadiene
The amine of alcohol, pentanediol, glycerine, undecyl alcohol ~ docosanol, undecylamine ~ 20, fatty alcohol polyoxyethylene ether, alkyl phenol polyoxy second
Alkene ether, anionic polyacrylamide, sulfamic acid sodium, sodium cyclohexylsulfamate, aminobenzenesulfonic acid and its salt, sulfamic acid
Ammonium, cyclohexane sulfamic acid and its salt, aminobenzoic acid and its salt, dimethylaminobenzenesulfonic acid and its salt, naphthylamine sulfonic acid and its
Salt, hydroxy amino naphthalene sulfonic acids and its salt, aminoethyl naphthalene sulfonic acids and its salt, one kind or more in dimethylamino naphthalene sulfonic acids and its salt
Kind, C is catalyst, selected from p-methyl benzenesulfonic acid, methanesulfonic acid, dimethylamino naphthyridine, thionyl chloride, hydrochloric acid, hydrobromic acid, hydrogen fluorine
It is one or more in acid, carbonic acid, dilute sulfuric acid, phosphoric acid, boric acid, sodium hydroxide, potassium hydroxide, ammonium hydroxide；D is solvent, including benzene,
Toluene, paraxylene, ortho-xylene, repefral, ethyl acetate, acetone, tetrahydrofuran, propyl alcohol, chloroform, dichloro
It is one or more in methane, dimethyl sulfoxide, dimethylformamide.
2. the method for being used for water-coal-slurry viscosity reduction according to claim 1, it is characterized in that x is mole of alpha-olefin and maleic anhydride
Than x values 0.2 ~ 5.0；Y is the molar ratio of styrene and maleic anhydride, y values 0.2 ~ 5.0；A is initiator and maleic anhydride
Molar ratio, a values 0.01 ~ 2.0；B is the molar ratio of modifying agent and maleic anhydride, b values 0.2 ~ 5.0；C is catalyst and horse
Come the molar ratio of acid anhydrides, c values 0.01 ~ 2.0；D is the molar ratio of solvent and maleic anhydride, d values 5.0 ~ 20.0.
3. the method for being used for water-coal-slurry viscosity reduction according to claim 1, it is characterized in that after water-coal-slurry thinner is added, using stream
Become instrument tested viscosity and yield stress variation.
4. the method for being used for water-coal-slurry viscosity reduction according to claim 2, it is characterized in that water-coal-slurry thinner mass fraction is
0.01% ~ 3%, preferably 0.2 ~ 0.8%.
5. the method for being used for water-coal-slurry viscosity reduction according to claim 2, it is characterized in that the test of the viscosity and yield stress
Temperature is -20 ~ 200 DEG C, for ease of facilitating practical application, is measured for 20 DEG C.
6. a kind of efficient water-coal-slurry thinner synthetic method according to claim 2, it is characterized in that the viscosity and surrender
The testing time of stress is preferably 1min ~ 50min.
7. the method for being used for water-coal-slurry viscosity reduction according to claim 1, it is characterized in that the water-coal-slurry thinner molecular weight is
1000 ~ 100000, esterification degree is 0.1 ~ 5.0.
8. the method for being used for water-coal-slurry viscosity reduction according to claim 1, it is characterized in that the preparation step of the water-coal-slurry thinner
Suddenly, including：
Free radical polymerization synthesizes intermediate product；
Chemical modification synthesizes thinner；
Purify drying.
9. the preparation process of water-coal-slurry thinner according to claim 8, it is characterized in that Raolical polymerizable temperature be 30 ~
180 DEG C, when reaction, is 0.5 ~ 12 hour a length of.
10. the preparation process of water-coal-slurry thinner according to claim 8, it is characterized in that chemical modification reaction temperature be 30 ~
180 DEG C, when reaction, is 0.5 ~ 12 hour a length of.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810299473.4A CN108315068B (en) | 2018-04-04 | 2018-04-04 | Method for reducing viscosity of coal water slurry |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810299473.4A CN108315068B (en) | 2018-04-04 | 2018-04-04 | Method for reducing viscosity of coal water slurry |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108315068A true CN108315068A (en) | 2018-07-24 |
| CN108315068B CN108315068B (en) | 2020-04-21 |
Family
ID=62896879
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810299473.4A Active CN108315068B (en) | 2018-04-04 | 2018-04-04 | Method for reducing viscosity of coal water slurry |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108315068B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60250096A (en) * | 1984-05-28 | 1985-12-10 | Kao Corp | Additive for coal-water slurry |
| CN86106954A (en) * | 1985-11-02 | 1987-04-29 | 希尔斯股份公司 | Reduce the method for viscosity in aqueous coal slurries with partial esters of polycarboxylic acids |
| CA1304224C (en) * | 1986-02-06 | 1992-06-30 | Anthony E. Gross | Coal water slurry viscosity reduction using sulphonate containing water-soluble terpolymers |
| CN104893770A (en) * | 2014-08-05 | 2015-09-09 | 浙江煤科清洁能源有限公司 | Process for preparing slurry by mixing Shenhua coal and Pingyi coal |
-
2018
- 2018-04-04 CN CN201810299473.4A patent/CN108315068B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60250096A (en) * | 1984-05-28 | 1985-12-10 | Kao Corp | Additive for coal-water slurry |
| CN86106954A (en) * | 1985-11-02 | 1987-04-29 | 希尔斯股份公司 | Reduce the method for viscosity in aqueous coal slurries with partial esters of polycarboxylic acids |
| CA1304224C (en) * | 1986-02-06 | 1992-06-30 | Anthony E. Gross | Coal water slurry viscosity reduction using sulphonate containing water-soluble terpolymers |
| CN104893770A (en) * | 2014-08-05 | 2015-09-09 | 浙江煤科清洁能源有限公司 | Process for preparing slurry by mixing Shenhua coal and Pingyi coal |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108315068B (en) | 2020-04-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102603223A (en) | Polycarboxylic acid water reducer with solid raw materials and preparing process of the polycarboxylic acid water reducer | |
| CN101200355A (en) | Polycarboxylic acids series water reducer and method for making same | |
| CN104609756A (en) | Cationic concrete mud inhibiting agent and preparation method thereof | |
| CN102140020B (en) | Concrete water reducing agent and preparation method thereof | |
| CN104628293A (en) | Early strength type polycarboxylic acid water reducing agent, preparation method and use method thereof | |
| CN111690447B (en) | Coal water slurry additive and preparation method and application thereof | |
| CN101792282B (en) | Polycarboxylate water reducing agent and preparation method thereof | |
| CN103923715B (en) | With blue charcoal end for the method for water charcoal slurry prepared by raw material | |
| CN104388133B (en) | A kind of preparation method of saponin base slurries additive agent | |
| CN104774660A (en) | Naphthalene coal water slurry additive and preparation method thereof | |
| CN108315068A (en) | Method for water-coal-slurry viscosity reduction | |
| CN108530639A (en) | Efficient water-coal-slurry thinner | |
| CN109096428B (en) | Tannin modified additive and application thereof in preparation of coal water slurry | |
| CN106947554A (en) | A kind of flammable nano combined pour-point depressant and preparation method thereof | |
| CN103937560B (en) | A kind of nanometer alcohol-group fuel | |
| CN102492074A (en) | Comb type copolymer with side chains grafted with naphthalene sulfonic acid groups, preparation method thereof and application thereof | |
| CN102199459A (en) | Aliphatic additive for coal water slurry | |
| CN109897704B (en) | Coal water slurry additive, composition thereof and preparation method of coal water slurry | |
| CN103060022A (en) | Methanol gasoline and production method thereof | |
| CN103011653B (en) | Preparation process of polyglycerol cement grinding aid | |
| CN113969197B (en) | Multi-copolymer dispersant based on humic acid, preparation method thereof and application thereof in coal water slurry | |
| CN111534345B (en) | Preparation method of high-concentration mixed coal water slurry additive | |
| CN106589260A (en) | Polycarboxylic acid water-coal-slurry additive as well as preparation method and application thereof | |
| CN102875405A (en) | Polyhydric alcohols of basic amino acid or ester thereof and preparation method and application of polyhydric alcohols | |
| CN104232177B (en) | A kind of propellant combination |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |