CN102161923B - Coal water slurry dispersing agent - Google Patents
Coal water slurry dispersing agent Download PDFInfo
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- CN102161923B CN102161923B CN 201110065107 CN201110065107A CN102161923B CN 102161923 B CN102161923 B CN 102161923B CN 201110065107 CN201110065107 CN 201110065107 CN 201110065107 A CN201110065107 A CN 201110065107A CN 102161923 B CN102161923 B CN 102161923B
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- coal
- water slurry
- coal water
- dispersing agent
- phosphate
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Abstract
The invention relates to a coal water slurry dispersing agent. The dispersing agent consists of the following components by weight percent: 75-95% of lignosulfonate, 2-15% of polyphosphate, 2-10% of macromolecule auxiliary and 0.1-1.0% of sodium hydroxide. The addition amount of the dispersing agent is 0.5-3 per mill, and the prepared 2-3% aqueous solution can be directly pumped into a rod mill for preparing coal water slurry. The concentration of the prepared coal water slurry is improved to 60-70%, and the viscosity of the prepared coal water slurry is reduced to 400-1200 Pa.s. The dispersing agent is suitable to the coal water slurry preparation by using various kinds of coal, coil with poor coal quality.
Description
One, technical field
The present invention relates to a kind of auxiliary agent that coal water slurry is used for preparing, exactly is a kind of coal water slurry dispersing agent.
Two, background technology
China's fossil energy structure is very unreasonable, and from explored reserves, coal accounts for 92.94%, and oil accounts for 5.35%, and Sweet natural gas accounts for 1.71%, and its formation characteristics are rich coal, oil-poor, weak breath.Since Low oil Fuel, the annual need from external import substantial oil, heavy oil, and also proportion is increasing.Coal water slurry is as novel energy, is subjected to attention and the support of country always, but coal water slurry because water and coal can not dissolve each other, so must add certain dispersion agent, is uniformly dispersed it in making processes, and the concentration that increases coal water slurry reduces viscosity.Coal water slurry dispersing agent is a kind of tensio-active agent, is made of hydrophobic group and hydrophilic group two portions.The main effect of dispersion agent is the surface properties that changes the coal grain, strengthens electrostatic repulsion, promotes the coal grain to be dispersed in the water, prevents that the coal grain is coalescent, improves the flowability of coal water slurry.
Coal water slurry dispersing agent in the market mainly is divided into following several: naphthalene system, polyacrylic and Lignins, because being the raw material of coal water slurry dispersing agent, mainly from oil, refines naphthalene, be subjected to the influence of raw material, the share of market of the coal water slurry dispersing agent of naphthalene system is dwindled just gradually; Polyacrylic drives the slurrying cost and raises because price is higher, and the client of use is less; The dispersion agent starting material of Lignins are mainly derived from the black liquor waste that pulp and paper industry produces, and pulp industry can produce the xylogen byproduct about 5000 tons every year, and reparation technology is simple relatively, so cheap.
Xylogen is extensive, cheap owing to raw material sources, and is renewable resources, becomes the developing direction in this field.
Three, summary of the invention
The present invention is intended to provide a kind of dispersion agent for the preparation coal water slurry.Technical problem to be solved is that this dispersion agent consumption is few, both can improve the concentration of coal water slurry, can reduce its viscosity again.
Technical scheme of the present invention is made up of following components by mass percentage:
Preferably:
Described sulfonated lignin are the sulfonated lignins that obtained through sulfonation by the xylogen that reclaims in the black liquor, and market is on sale, mostly are sodium salt.
Described poly-phosphate is selected from tripoly phosphate sodium STPP or sodium hexametaphosphate.Preferred tripoly phosphate sodium STPP.
Described pluronic polymer is by 40-60% (mass percent, the mixture of co-polymer of sulfonate, 20-40% Amino Trimethylene Phosphonic Acid, 5-20% 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid and 5-20% polymaleic anhydride composition down together), this pluronic polymer be the applicant at the Scale inhibitors that prevents the ash water system fouling of preceding application, claim stablizer (CN100384762C) again.
This dispersion agent is preparation like this, at first under agitation the sulfonated lignin of proportional quantity are added in 40-50 ℃ the hot water, the poly-phosphate, pluronic polymer and the sodium hydroxide solution that add proportional quantity then, be warming up to 75-90 ℃ of stirring and obtained dispersant solution in 1-2 hour, obtain the dispersion agent pressed powder finally by spraying drying.
This dispersion agent is compared with traditional Lignins coal water slurry dispersing agent, has following characteristics:
1, dosage reduces, and in the coal water slurry manufacture craft, according to the difference of ature of coal, the addition of this product is 0.5-3 ‰ (in dry coal opaque amount).Be made into the aqueous solution of 2-3%, directly pump into and prepare coal water slurry in the rod mill, prepared water coal slurry concentration can be brought up to 60-70%, and viscosity can be reduced to 400-1200Pas.
2, suitable coal is extensive, this product is suitable for national most of coal, result on trial by the prosperous bright Coal Chemical Industry company limited in Anhui Huaihua Co., Ltd and Guizhou shows for the relatively poor coal of some atures of coal (as the Huainan in Inner Mongol coal, Guizhou coal and Anhui, the coal in the Huaibei) good viscosity reduction, dispersion effect are arranged also.
Four, embodiment
(1) preparation of pluronic polymer
1, the preparation of co-polymer of sulfonate
Being monomer with sulfonate, methyl acrylate and Virahol, is that initiator copolymerization under 80-90 ℃ of condition obtains co-polymer of sulfonate with persulphate in water.
2, the preparation of pluronic polymer
Get 50 parts of co-polymer of sulfonate (weight, down with), 30 parts of Amino Trimethylene Phosphonic Acid, 10 parts of 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid, 10 parts of polymaleic anhydride, the mixing and stirring sub-auxiliary agent that namely secures satisfactory grades.
(2) preparation of coal water slurry dispersing agent
Get sulfonated lignin 85kg, tripoly phosphate sodium STPP 8.7kg, pluronic polymer 6kg, 30%NaOH solution 1kg.
In reactor, add 150kg water, the chuck steam is warming up to 40-50 ℃, stir and add the 85kg sulfonated lignin down, stir and add 8.7kg tripoly phosphate sodium STPP, 6kg pluronic polymer and 1kg alkali lye after 10-15 minute, continue to be warming up to 75-90 ℃ and stirred 1-2 hour, obtain the coal water slurry dispersing agent pressed powder finally by spraying drying.
(3) result of use
This product is configured to 3% the aqueous solution with this product in using process, directly by pump delivery to rod mill.
Be test with Anhui Huaihua Co., Ltd's synthetic ammonia two factory's Texaco gasifier coal water slurry, in process of the test, get analysis of coal sample from the coal conveyer belt of rod mill charging, analytical results moisture 10.4%, ash content 14.6%, fugitive constituent 31.3%.
1, the test of the pulping of different additive consumption and the cost estimating of ton slurry additive
During the slurrying steady load, make under the situation of qualified coal slurry in assurance, change the addition of additive, analyze the slurries additive agent adding rate to the influence of slurry performance, determine to make the optimum addition of qualified water coal slurry desired additives, thereby investigate the Financial cost of using the additive preparation coal water slurry.In order to obtain stable data, the time of moving under every kind of addition is 6 hours.Testing data sees Table 1.
Table 1: the coal water slurry performance under the different additions and additive cost (aimed concn is 62%)
2, the additive test under the different slurrying loads
According to above test-results, select additive addition preferably, adjust the slurrying load, steady running 4 hours is investigated under different load slurries additive agent to the adaptability of technology.Testing data sees Table 2.
Table 2: the pulping testing data under the different load
3, continous-stable operation debugging
According to above experimental result, be chosen under certain additive addition, the certain load, continuously, steady running 34～36 hours, slurry performance and the transportation performance of examination additive when steady running.Analysis frequency 1 time/4 hours, experimental data sees Table 3.
Table 3:: continuous, steady running experimental data
Test-results shows that addition is under the situation of 1.93-2.98 ‰, and pulping device moves continuously, and making water coal slurry concentration is 60.36-63.96%, the coal water slurry good fluidity that makes, and no hard-caked sediment, test card open fire coal slurry can satisfy the texaco gasification requirement.
Claims (4)
1. a coal water slurry dispersing agent is characterized in that: be made up of following components by mass percentage
Sulfonated lignin 75-95%
Poly-phosphate 2-15%
Pluronic polymer 2-10%
Sodium hydroxide 0.1-1.0%;
Described pluronic polymer is made up of 40-60% co-polymer of sulfonate, 20-40% Amino Trimethylene Phosphonic Acid, 5-20% 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid and 5-20% polymaleic anhydride according to mass percent.
2. dispersion agent according to claim 1 is characterized in that:
Sulfonated lignin 85-90%
Poly-phosphate 4-10%
Pluronic polymer 4-7%
Sodium hydroxide 0.1-0.5%.
3. dispersion agent according to claim 1 and 2, it is characterized in that: described poly-phosphate is selected from tripoly phosphate sodium STPP or sodium hexametaphosphate.
4. dispersion agent according to claim 3, it is characterized in that: described poly-phosphate is tripoly phosphate sodium STPP.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110065107 CN102161923B (en) | 2011-03-17 | 2011-03-17 | Coal water slurry dispersing agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110065107 CN102161923B (en) | 2011-03-17 | 2011-03-17 | Coal water slurry dispersing agent |
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| Publication Number | Publication Date |
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| CN102161923A CN102161923A (en) | 2011-08-24 |
| CN102161923B true CN102161923B (en) | 2013-08-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201110065107 Expired - Fee Related CN102161923B (en) | 2011-03-17 | 2011-03-17 | Coal water slurry dispersing agent |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103045317B (en) * | 2012-12-26 | 2014-08-27 | 中国东方电气集团有限公司 | Lignin serial coal water slurry dispersing agent and preparation method thereof |
| CN103232869B (en) * | 2013-05-09 | 2015-01-14 | 陕西省石油化工研究设计院 | Water-coal-slurry additive for preparing slurry through concentrated water |
| CN108841371B (en) * | 2018-06-27 | 2020-07-31 | 长江大学 | Composite pulverized coal suspending agent for coal bed gas fracturing and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101029260A (en) * | 2006-03-01 | 2007-09-05 | 陕西升基利科技有限公司 | Production of instant water-gas slurry |
| CN101921639A (en) * | 2010-08-28 | 2010-12-22 | 福州大学 | Method for preparing water-coal-slurry additive taking enzymatic hydrolysis lignin as raw material |
-
2011
- 2011-03-17 CN CN 201110065107 patent/CN102161923B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101029260A (en) * | 2006-03-01 | 2007-09-05 | 陕西升基利科技有限公司 | Production of instant water-gas slurry |
| CN101921639A (en) * | 2010-08-28 | 2010-12-22 | 福州大学 | Method for preparing water-coal-slurry additive taking enzymatic hydrolysis lignin as raw material |
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| CN102161923A (en) | 2011-08-24 |
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Granted publication date: 20130821 Termination date: 20160317 |