CN111234889A - Comb type coal water slurry additive and preparation method thereof - Google Patents
Comb type coal water slurry additive and preparation method thereof Download PDFInfo
- Publication number
- CN111234889A CN111234889A CN201911338972.0A CN201911338972A CN111234889A CN 111234889 A CN111234889 A CN 111234889A CN 201911338972 A CN201911338972 A CN 201911338972A CN 111234889 A CN111234889 A CN 111234889A
- Authority
- CN
- China
- Prior art keywords
- parts
- water slurry
- coal water
- glycol monomethyl
- monomethyl ether
- 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.)
- Pending
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
- C10L1/10—Liquid carbonaceous fuels containing additives
- C10L1/106—Liquid carbonaceous fuels containing additives mixtures of inorganic compounds with organic macromolecular compounds
-
- 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
- C10L1/326—Coal-water suspensions
-
- 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
- C10L10/00—Use of additives to fuels or fires for particular purposes
-
- 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
- C10L1/10—Liquid carbonaceous fuels containing additives
- C10L1/12—Inorganic compounds
- C10L1/1233—Inorganic compounds oxygen containing compounds, e.g. oxides, hydroxides, acids and salts thereof
-
- 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
- C10L1/10—Liquid carbonaceous fuels containing additives
- C10L1/14—Organic compounds
- C10L1/24—Organic compounds containing sulfur, selenium and/or tellurium
- C10L1/2493—Organic compounds containing sulfur, selenium and/or tellurium compounds of uncertain formula; reactions of organic compounds (hydrocarbons, acids, esters) with sulfur or sulfur containing compounds
Landscapes
- Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Combustion & Propulsion (AREA)
- Liquid Carbonaceous Fuels (AREA)
Abstract
The invention provides a comb-type coal water slurry additive and a preparation method thereof, which relate to the technical field of coal water slurry additives and comprise the following raw materials in parts by weight: 310 parts of polyethylene glycol monomethyl ether acrylate, 1-30 parts of 2-acrylamide-2-methylpropanesulfonic acid, 4-5 parts of acrylamide, 40-170 parts of methacrylic acid, 2-4 parts of an initiator and 1-8 parts of a molecular weight regulator. Adding polyethylene glycol monomethyl ether acrylate, 2-acrylamide-2-methylpropanesulfonic acid and acrylamide into a reaction kettle at 75-85 ℃ to prepare an aqueous solution with a certain concentration, dissolving and stirring uniformly, dropwise adding the aqueous solution of methacrylic acid and the aqueous solution of an initiator and a molecular weight regulator into the reaction kettle to perform free radical copolymerization, and finally adjusting the pH value to 6-7 by using a 32% sodium hydroxide aqueous solution to obtain the coal water slurry additive. The coal water slurry additive has the advantages of easily available raw materials, environmental protection, low price, good dispersibility and the like, and can reach the slurry concentration of 63-67% in a low-rank coal sample and improve the slurry concentration by 2-3% compared with the slurry concentration in the market.
Description
Technical Field
The invention relates to the technical field of coal water slurry additives, in particular to a comb-type coal water slurry additive and a preparation method thereof.
Background
The coal water slurry is used for replacing coal for combustion, and has the advantages of high combustion benefit, environmental pollution reduction, convenience in load adjustment, coal saving, labor condition improvement and the like. The coal water slurry technology is a clean coal technology which is efficient, safe, economical, clean and simple to operate. The influence factors influencing the high-efficiency utilization of the coal water slurry are quite many, and the development of the dispersing agent has a key effect on the coal water slurry technology.
In recent years, many researches are made on coal water slurry additives at home and abroad, and a series of competitive products are produced. The research and application of the coal water slurry dispersing agent are prominent in foreign Nippon grease company, Kao corporation, and Across corporation. A series of good dispersants such as sodium polystyrene sulfonate (PSS), naphthalene sulfonate polymer (NSF), etc. have been developed by japanese researchers and have been used in industrial production. The national brewing company of America synthesizes a nonionic dispersant as the water-coal-slurry dispersant, which can lead the concentration of the prepared water-coal-slurry to reach 70 percent and has ideal stability and fluidity. The coal water slurry NDF dispersant developed by Nanjing university at home is suitable for wide coal types and has good performance. The water coal slurry additive synthesized by Kunzhan fine chemical company of Kunzhan city, Jiangsu province has certain performance even exceeding that of similar Japanese products. HNF developed by Huainan mining group synthetic material Limited liability company can simultaneously give consideration to the dispersibility and stability of the coal water slurry.
The total amount of coal resources in China is rich, the resource reserves of coal in China are 15663.1 hundred million tons, and the low-rank coal accounts for more than 50 percent. In the existing pulping technology, low-rank coal is difficult to prepare high-concentration coal water slurry. And the dispersant used for the coal water slurry mainly comprises naphthalene series, lignin series, humic acid series, sulfonated acetone-formaldehyde condensate, nonionic dispersant and the like. However, most of these dispersants are produced from petroleum products, which are expensive and easily cause environmental pollution. And the pulp concentration of the coal is not high, and the pulp concentration of the coal is between 59 and 61 by using low-rank coal and immature coal generally.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a comb-type coal water slurry additive and a preparation method thereof, the coal water slurry additive has the advantages of easily available raw materials, environmental protection, low price, good dispersibility and the like, and can achieve a slurry concentration of 63-67% in a low-rank coal sample and improve the slurry concentration by 2-3% compared with the slurry concentration in the market.
(II) technical scheme
In order to achieve the purpose, the invention is realized by the following technical scheme:
a comb-type coal water slurry additive comprises the following raw materials in parts by weight: 310 parts of polyethylene glycol monomethyl ether acrylate, 1-30 parts of 2-acrylamide-2-methylpropanesulfonic acid, 4-5 parts of acrylamide, 40-170 parts of methacrylic acid, 2-4 parts of an initiator and 1-8 parts of a molecular weight regulator.
Further, the feed comprises the following raw materials in parts by weight: 250 parts of polyethylene glycol monomethyl ether acrylate, 20 parts of 2-acrylamide-2-methylpropanesulfonic acid, 4 parts of acrylamide, 100 parts of methacrylic acid, 2.5 parts of an initiator and 5 parts of a molecular weight regulator.
Further, the initiator is one or two of ammonium persulfate and potassium persulfate which are mixed in any proportion.
Further, the molecular weight regulator is one or a mixture of several of sodium hypophosphite, potassium hypophosphite, sodium bisulfite, thioglycolic acid, mercaptopropionic acid and mercaptoethanol in any proportion.
Further, the preparation method of the polyethylene glycol monomethyl ether acrylate comprises the following steps: adding acrylic acid and polyethylene glycol monomethyl ether into a reaction kettle, adding a catalyst and a polymerization inhibitor, slowly heating to 120-130 ℃, keeping the temperature for 3-6 h after constant-temperature reaction, keeping the temperature for 2-3h, and cooling to obtain the polyethylene glycol monomethyl ether acrylate.
Furthermore, the mass ratio of the acrylic acid to the polyethylene glycol monomethyl ether is 1: 1.5-2.5.
Further, the catalyst is one or more of sulfuric acid, phosphoric acid, p-toluenesulfonic acid and dodecylbenzene sulfonic acid, and the amount of the catalyst is 1.0-3.0% of the total amount of acrylic acid and polyethylene glycol monomethyl ether.
Further, the polymerization inhibitor is one or more of hydroquinone, THQ, phenothiazine and p-methyl ether phenol, and the dosage of the polymerization inhibitor is 0.05-0.15% of the total amount of the acrylic acid and the polyethylene glycol monomethyl ether.
The preparation method of the comb-type coal water slurry additive comprises the following steps: adding polyethylene glycol monomethyl ether acrylate, 2-acrylamide-2-methylpropanesulfonic acid and acrylamide into a reaction kettle at 75-85 ℃ to prepare an aqueous solution with a certain concentration, dissolving and stirring uniformly, dropwise adding the aqueous solution of methacrylic acid and the aqueous solution of an initiator and a molecular weight regulator into the reaction kettle to perform free radical copolymerization reaction for 2-3h, preserving heat for 2h after the reaction is finished, and finally adjusting the pH value to 6-7 by using a 32% sodium hydroxide aqueous solution to obtain the coal water slurry additive.
(III) advantageous effects
The invention provides a comb type coal water slurry additive and a preparation method thereof, and the comb type coal water slurry additive has the following beneficial effects:
1. the reaction condition of the coal water slurry additive is room temperature free radical polymerization, the reaction condition is easy to control, the production process is simple, and no three wastes are discharged.
2. The coal water slurry additive of the invention has better dispersibility under lower mixing amount.
3. The coal water slurry additive can obviously improve the concentration of coal water slurry.
4. The coal water slurry additive can prolong the slurry stabilization time and has good stability.
5. The coal water slurry additive can reduce the viscosity of coal water slurry.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1:
a comb-type coal water slurry additive comprises the following raw materials in parts by weight: 310 parts of polyethylene glycol monomethyl ether acrylate, 1 part of 2-acrylamide-2-methylpropanesulfonic acid, 4 parts of acrylamide, 40 parts of methacrylic acid, 2.5 parts of ammonium persulfate and 1 part of mercaptopropionic acid.
The preparation method of the ethylene glycol monomethyl ether acrylate comprises the following steps: adding 100 parts of acrylic acid and 180 parts of polyethylene glycol monomethyl ether into a reaction kettle, adding 1.5 parts of p-toluenesulfonic acid, 2 parts of sulfuric acid, 0.15 part of hydroquinone and 0.2 part of phenothiazine, stirring, slowly heating to 130 ℃, keeping the temperature for 5 hours after constant-temperature reaction, keeping the temperature for 2 hours, and cooling to 60 ℃ to obtain the polyethylene glycol monomethyl ether acrylate.
The preparation method of the comb-type coal water slurry additive comprises the following steps: adding polyethylene glycol monomethyl ether acrylate, 2-acrylamide-2-methylpropanesulfonic acid and acrylamide into a reaction kettle at 75-85 ℃ to prepare an aqueous solution with a certain concentration, dissolving and stirring uniformly, dropwise adding the aqueous solution of methacrylic acid and the aqueous solution of an initiator and a molecular weight regulator into the reaction kettle to perform free radical copolymerization reaction for 3 hours, preserving heat for 2 hours after the reaction is finished, and finally adjusting the pH value to 6-7 by using a 32% sodium hydroxide aqueous solution to obtain the coal water slurry additive.
Example 2:
a comb-type coal water slurry additive comprises the following raw materials in parts by weight: 280 parts of polyethylene glycol monomethyl ether acrylate, 10 parts of 2-acrylamide-2-methylpropanesulfonic acid, 4 parts of acrylamide, 70 parts of methacrylic acid, 2.5 parts of ammonium persulfate and 3 parts of thioglycolic acid.
The preparation method of the ethylene glycol monomethyl ether acrylate and the preparation method of the comb-type coal water slurry additive are the same as the example 1.
Example 3:
a comb-type coal water slurry additive comprises the following raw materials in parts by weight: 250 parts of polyethylene glycol monomethyl ether acrylate, 20 parts of 2-acrylamide-2-methylpropanesulfonic acid, 4 parts of acrylamide, 100 parts of methacrylic acid, 2.5 parts of an initiator and 5 parts of a molecular weight regulator.
The preparation method of the ethylene glycol monomethyl ether acrylate and the preparation method of the comb-type coal water slurry additive are the same as the example 1.
Example 4:
a comb-type coal water slurry additive comprises the following raw materials in parts by weight: 220 parts of polyethylene glycol monomethyl ether acrylate, 20 parts of 2-acrylamide-2-methylpropanesulfonic acid, 4 parts of acrylamide, 130 parts of methacrylic acid, 4 parts of potassium persulfate, 7 parts of sodium hypophosphite and 1 part of sodium bisulfite.
The preparation method of the ethylene glycol monomethyl ether acrylate and the preparation method of the comb-type coal water slurry additive are the same as the example 1.
Example 5:
a comb-type coal water slurry additive comprises the following raw materials in parts by weight: 220 parts of polyethylene glycol monomethyl ether acrylate, 20 parts of 2-acrylamide-2-methylpropanesulfonic acid, 5 parts of acrylamide, 130 parts of methacrylic acid, 3 parts of ammonium persulfate, 2 parts of mercaptopropionic acid and 3 parts of sodium hypophosphite.
The preparation method of the ethylene glycol monomethyl ether acrylate and the preparation method of the comb-type coal water slurry additive are the same as the example 1.
Example 6:
a comb-type coal water slurry additive comprises the following raw materials in parts by weight: 200 parts of polyethylene glycol monomethyl ether acrylate, 30 parts of 2-acrylamide-2-methylpropanesulfonic acid, 4-5 parts of acrylamide, 120 parts of methacrylic acid, 1 part of ammonium persulfate, 1 part of mercaptopropionic acid and 3 parts of sodium hypophosphite.
The preparation method of the ethylene glycol monomethyl ether acrylate and the preparation method of the comb-type coal water slurry additive are the same as the example 1.
Example 7:
a comb-type coal water slurry additive comprises the following raw materials in parts by weight: 180 parts of polyethylene glycol monomethyl ether acrylate, 30 parts of 2-acrylamide-2-methylpropanesulfonic acid, 5 parts of acrylamide, 170 parts of methacrylic acid, 2 parts of ammonium persulfate, 2 parts of mercaptopropionic acid and 5 parts of sodium hypophosphite.
The preparation method of the ethylene glycol monomethyl ether acrylate and the preparation method of the comb-type coal water slurry additive are the same as the example 1.
Test method and result analysis:
according to GB/T18856.5-2008 water coal slurry test method part 5, a loading method in stability measurement and the experience of ordinary experiments.
By adopting the coal water slurry additive synthesized in the embodiments 1 to 7 of the invention and the common coal water slurry additive sold in the market, the addition amount of the coal water slurry is 1.5 per mill of the total amount of dry coal, a small ball mill wet milling process is used, and the concentration, the viscosity, the fluidity (the expansion degree) and the water precipitation rate are compared, and the specific experimental method is as follows.
Firstly, concentration experiment:
1. laboratory apparatus
Halogen moisture tester
2. Experimental procedure
① and switching on the power supply of the experimental instrument to dry the tray.
② A sample of 3-5g of coal water slurry was placed on the tray and the start button was pressed to initiate the test.
③ reading A, the concentration of water-coal-slurry is w 100% -A
II, viscosity experiment:
1. laboratory apparatus
BROOKEIELD bohler fly DV1 viscometer, 150ml beaker, usa.
2. Experimental procedure
① the power supply of the experimental instrument is switched on, the level is adjusted and the zero is automatically adjusted.
② the same amount of sample is placed in a 150ml beaker to ensure the temperature and quality of the sample to be measured the beaker is placed under the instrument and the rotor is brought into the sample until the graduation mark on the rotor and the test is started by pressing the start key.
③ the sample viscosity was measured using # 62 rotor at a shear rate of 20. the comparison of viscosity must be done at the same instrument, rotor, speed, vessel, temperature and test time.
Thirdly, fluidity experiment:
1. laboratory apparatus
a. Truncated cone circular die: the diameter of the upper opening is 36mm, the diameter of the lower opening is 60mm, the height is 60mm, and the inner wall of the metal product is smooth and has no seam;
b. glass plates (400X 400mm, thickness 5 mm);
c. straightedge made of steel (300mm)
d. A scraper;
2. experimental procedure
① the glass plate is placed in a horizontal position and wetted with a wet cloth, the truncated cone round mold, the stirrer and the stir pan without water stain.
② the truncated cone circular mold was placed in the center of the glass plate and covered with a wet cloth until use.
③ the water-coal-slurry is quickly poured into the truncated cone mould, and then it is scraped by scraper, and the truncated cone mould is lifted vertically until the water-coal-slurry flows on the glass plate, and the maximum diameters of the two mutually perpendicular directions of the flowing part are measured by a ruler, and the average value is taken as the fluidity of the water-coal-slurry.
Fourthly, water precipitation rate:
1. an experimental instrument: a colorimetric cylinder and a hundredth balance.
2. Test procedure
Putting the prepared coal water slurry into a 100ml colorimetric tube to obtain the quality A of the coal water slurry, standing the coal water slurry for a certain time (t), sucking surface water separation by using a rubber head dropper to obtain the water separation quality B, and calculating the water separation rate according to the following formula.
The water precipitation rate is B/A multiplied by 100%
The selected coal samples are blended coal of Shenmu, Wuqi Turkey, Samonte coal, Xinjiang coal and inner Mongolia coal. The coal quality characteristics and the results are shown in the following tables 1, 2 and 3.
Table 1:
table 2:
table 3:
as shown in tables 1 to 3, the coal water slurry additives prepared in examples 1 to 7 have better coal type adaptability, generally higher dispersion ability, low viscosity, good stability and good fluidity compared with the common coal water slurry additives (naphthalene and lignosulfonate) on the market, and can be used for preparing high-concentration coal water slurry, wherein examples 3 and 4 have more excellent performance and are most worth popularizing.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (7)
1. The comb-type coal water slurry additive is characterized by comprising the following raw materials in parts by weight: 310 parts of polyethylene glycol monomethyl ether acrylate, 1-30 parts of 2-acrylamide-2-methylpropanesulfonic acid, 4-5 parts of acrylamide, 40-170 parts of methacrylic acid, 2-4 parts of an initiator and 1-8 parts of a molecular weight regulator.
2. The comb-type coal water slurry additive of claim 1, which comprises the following raw materials in parts by weight: 250 parts of polyethylene glycol monomethyl ether acrylate, 20 parts of 2-acrylamide-2-methylpropanesulfonic acid, 4 parts of acrylamide, 100 parts of methacrylic acid, 2.5 parts of an initiator and 5 parts of a molecular weight regulator.
3. The comb-type coal water slurry additive according to claim 1 or 2, wherein the preparation method of the polyethylene glycol monomethyl ether acrylate comprises the following steps: adding acrylic acid and polyethylene glycol monomethyl ether into a reaction kettle, adding a catalyst and a polymerization inhibitor, slowly heating to 120-130 ℃, keeping the temperature for 3-6 h after constant-temperature reaction, keeping the temperature for 2-3h, and cooling to obtain the polyethylene glycol monomethyl ether acrylate.
4. The comb-type coal water slurry additive according to claim 3, wherein the mass ratio of the acrylic acid to the polyethylene glycol monomethyl ether is 1: 1.5-2.5.
5. The comb-type coal water slurry additive according to claim 3, wherein the catalyst is one or more of sulfuric acid, phosphoric acid, p-toluenesulfonic acid and dodecylbenzene sulfonic acid, and the amount of the catalyst is 1.0-3.0% of the total amount of acrylic acid and polyethylene glycol monomethyl ether.
6. The comb-type coal water slurry additive according to claim 3, wherein the polymerization inhibitor is one or more of hydroquinone, THQ, phenothiazine and p-methyl ether phenol, and the dosage of the polymerization inhibitor is 0.05-0.15% of the total amount of acrylic acid and polyethylene glycol monomethyl ether.
7. The comb-type coal-water slurry additive according to claim 1 or 2, wherein the preparation method of the coal-water slurry additive comprises the following steps: adding polyethylene glycol monomethyl ether acrylate, 2-acrylamide-2-methylpropanesulfonic acid and acrylamide into a reaction kettle at 75-85 ℃ to prepare an aqueous solution with a certain concentration, dissolving and stirring uniformly, dropwise adding the aqueous solution of methacrylic acid and the aqueous solution of an initiator and a molecular weight regulator into the reaction kettle to perform free radical copolymerization reaction for 2-3h, preserving heat for 2h after the reaction is finished, and finally adjusting the pH value to 6-7 by using a 32% sodium hydroxide aqueous solution to obtain the coal water slurry additive.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911338972.0A CN111234889A (en) | 2019-12-23 | 2019-12-23 | Comb type coal water slurry additive and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911338972.0A CN111234889A (en) | 2019-12-23 | 2019-12-23 | Comb type coal water slurry additive and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111234889A true CN111234889A (en) | 2020-06-05 |
Family
ID=70879384
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911338972.0A Pending CN111234889A (en) | 2019-12-23 | 2019-12-23 | Comb type coal water slurry additive and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111234889A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101333092A (en) * | 2007-06-25 | 2008-12-31 | 深圳市海川实业股份有限公司 | Cement concrete superplasticizer and method for preparing same |
| CN102225988A (en) * | 2011-03-24 | 2011-10-26 | 中国海洋石油总公司 | Dispersant used in polymer cement mortar for oil field cementing, and preparation method thereof |
| CN102453254A (en) * | 2010-10-18 | 2012-05-16 | 中国石油化工股份有限公司 | Acrylic acid ester compound and polymer, preparation method and application thereof |
-
2019
- 2019-12-23 CN CN201911338972.0A patent/CN111234889A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101333092A (en) * | 2007-06-25 | 2008-12-31 | 深圳市海川实业股份有限公司 | Cement concrete superplasticizer and method for preparing same |
| CN102453254A (en) * | 2010-10-18 | 2012-05-16 | 中国石油化工股份有限公司 | Acrylic acid ester compound and polymer, preparation method and application thereof |
| CN102225988A (en) * | 2011-03-24 | 2011-10-26 | 中国海洋石油总公司 | Dispersant used in polymer cement mortar for oil field cementing, and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9365669B2 (en) | Slump retaining polycarboxylic acid superplasticizer | |
| CN101333092B (en) | Cement concrete superplasticizer and method for preparing same | |
| CN101508536B (en) | modified aliphatic water reducing agent and preparation method | |
| CN103183795B (en) | Low air content polycarboxylic acid water reducer and preparation method thereof | |
| CN102627743A (en) | Preparation method of polycarboxylic copolymer with high solid content | |
| CN113354765A (en) | Viscosity-reducing polycarboxylate superplasticizer and preparation method thereof | |
| CN107247048B (en) | Method for determining compatibility of fly ash and water reducing agent in concrete | |
| CN111234889A (en) | Comb type coal water slurry additive and preparation method thereof | |
| CN110819405A (en) | Modified comb-type coal water slurry dispersing agent prepared from hydroxypropyl cellulose and preparation method | |
| CN110819407A (en) | Coal water slurry dispersing agent prepared by dinaphthol production wastewater and preparation method thereof | |
| CN111139111A (en) | Comb type coal water slurry additive and preparation method thereof | |
| CN103011674A (en) | Polyether amine modified polycarboxylate-type concrete slump retaining agent and preparation method thereof | |
| CN110819402A (en) | Starch modified comb-type coal water slurry dispersing agent and preparation method thereof | |
| CN111171885A (en) | Comb-type coal water slurry dispersant and preparation method thereof | |
| CN111363159A (en) | Sulfonated styrene-maleic anhydride grafted polyether type reduction type polycarboxylate superplasticizer | |
| CN111994975A (en) | Recycling method of cyclohexanone wastewater | |
| CN111072867A (en) | Solid polycarboxylic acid water reducing agent and preparation method thereof | |
| CN111792868A (en) | Environment-friendly naphthalene-based high-efficiency water reducing agent and preparation method thereof | |
| CN110819406A (en) | Coal water slurry dispersing agent prepared by using modified sodium lignosulfonate and preparation method thereof | |
| CN103288376A (en) | Synthesizing and compounding method of polycarboxylate-type high-efficiency water reducing agent | |
| CN112574072A (en) | Method for synthesizing dispersant by using acid tar | |
| CN112374786A (en) | Resource utilization method of salicylic acid production wastewater | |
| CN105504183A (en) | Method for synthesis of ether type polycarboxylic acid water reducer | |
| CN112592452A (en) | Method for resource utilization of resorcinol distillation residues | |
| CN112341577A (en) | Slump-retaining early-strength polycarboxylate superplasticizer and preparation method and application thereof |
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 | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200605 |