CN105038879A - Application of coal water slurry additive - Google Patents
Application of coal water slurry additive Download PDFInfo
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- CN105038879A CN105038879A CN201510442594.6A CN201510442594A CN105038879A CN 105038879 A CN105038879 A CN 105038879A CN 201510442594 A CN201510442594 A CN 201510442594A CN 105038879 A CN105038879 A CN 105038879A
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Abstract
The invention relates to the technical field of additives, and particularly discloses an application of a coal water slurry additive. The application comprises the following steps of manufacturing, liquid preparation and mixing of the coal water slurry additive. The dosage is small, and efficiency is high. The prepared coal water slurry is low in surface viscosity, high in concentration and good in stability. Meanwhile, the coal water slurry additive can be used for coal of different metamorphic grades and is high in applicability.
Description
Technical field
The present invention relates to a kind of additive technology field, refer to a kind of application of slurries additive agent especially.
Background technology
As the coal water slurry gasification of one of clean coal technology since early 1980s research and development, through constantly tackling of key scientific and technical problems and production practice for many years, generally apply in China, produced and all rank first in the world with application scale.High-concentration coal-water slurry had both maintained the original physics and chemistry characteristic of coal, and image-stone oil equally has good mobility and stability again, and its security is simultaneously better than oil.Coal water slurry as desirable fuel-economizing oil-substituted fuel, once occurring receiving global common concern.Along with the Rapid Expansion of the leading Chemical Industry of coal water slurry gasification, the application scale of gasified coal water slurry will keep strong growth.But water coal slurry concentration is on the low side, poor stability is a difficult problem for puzzlement Ge great Coal Chemical Industry manufacturing enterprise always.
In general, be low viscosity, high density and good mobility and stability to the specification of quality of coal water slurry.Slurries additive agent is one of key affecting coal water slurry quality, also affects the production cost of coal water slurry.Slurries additive agent can be divided into dispersion agent, stablizer and auxiliary agent three major types, and wherein dispersion agent is the most important.
The slurries additive agent developed both at home and abroad at present and filter out is mainly anionic, non-ionic type and organic high molecular polymer and other complex additives, wherein mainly contains naphthalene system, humic acid system, Lignins, polyolefin, acrylic acid series etc.
Naphthalene system dispersion agent is the most frequently used coal tar system dispersion agent, and its main component is naphthalene sulfonic acid formaldehyde polymer, and hydrophobic part is naphthalene, and functional group is sulfonic group.Naphthalene system additive is the most widely used additive in the market.Additive system of naphthalene system adopts NAPTHALENE FLAKES. (INDUSTRIAL GRADE）, formaldehyde and the vitriol oil and liquid caustic soda to be that main raw material is prepared under certain reaction conditions.Its advantage is good dispersity, and dehesion effect is strong, and slurry flow pattern is good; Shortcoming is that slurry stability is poor, and easy bleed produces hard-caked sediment, on the high side.
Lignins is Lignins sulfonate mainly, and be the main component of log waste water in paper industry sulfurous acid pulping process, sulfonated lignin are cheap, and the low bubble of tool, be mainly used as solid dispersion.Sulfonated lignin can use alkaline pulping black liquor, by the chemical modification such as methylolation, sulfonation, prepare sulfonated lignin.Lignins dispersion agent; Shortcoming is that consumption is large, and slurry concentration is low, and viscosity is comparatively large, and have more impurity, slurry flow pattern is more coarse.
Humic acid system humic acid series.This type of dispersion agent extracts from low-rank coal, and good dispersity can be used alone.Experiment proves, feed coal is younger, and obtained additive thinning effect is better.Its shortcoming is to metal ion-sensitive, easily forms precipitation, the poor stability of slurry, higher to slurrying water quality requirement.
Studies have found that, the composite use of several dispersion agent can produce synergistic effect, can improve water coal slurry concentration, reduces slurry viscosity, reduces total additive amount, reach the object that cost is low, performance is high.Modal mode is that the moon/negatively charged ion is composite, and non-/ nonionic is composite, and non-/ negatively charged ion is composite.Contriver study the moon/anion surfactant composite time, the polycarboxylic acid series dispersion agent PMMA (maleic anhydride-vinylformic acid-2-acrylamido-2-methyl propane sulfonic acid sodium multipolymer) that develops voluntarily and naphthalene system dispersion agent is utilized to be undertaken composite by different mass ratio, and study the impact of composite dispersion agent on slurry performance, result shows that PMMA has good dispersive ability, can keep the good stability of slurry and mobility under low temperature; Naphthalene system/polycarboxylic acid series dispersion agent after composite, substantially increase its net effect, make the viscosity of slurry, stability all increases.
Nanjing University researchist exploitation that methanonaphthalene sodium sulfonate-Sodium styrene sulfonate-sodium maleate (NDF) slurries additive agent is suitable for coal is wide, performance is good, occupies a large amount of slurries additive agent market.
A kind of nonionic and negatively charged ion composite coal-water fluid additive, containing nonionic polyoxyalkylene surface active agent ester, acid-base modifier, stablizer, water, it is wide to coal adaptability, slurrying concentration is high, viscosity is low, there is the performance of dispersion agent and stablizer simultaneously, the Zeta electric potential of coal intergranular can be reduced, make coal water slurry reach stabilising effect, good combination property, its raw material sources is wide, and technical maturity is feasible, and cost is lower, few three-waste pollution, has higher economic and social benefit.
Existing by additive equal Shortcomings part mostly in summary.Such as some expense is higher, poor stability, higher to slurrying water quality requirement, particularly poor to the adaptability of coal.Slurries additive agent kind is more, but the tensio-active agent comprised is of less types, therefore shows quality general, thus the coal water slurry of preparation, most of paste consistency is on the low side.The extensive still naphthalene system additive of Application comparison on current China Water slurry additive market, its research reaches higher level.But still there is applicable coal narrow range, the problem that cost is higher.
Therefore, for above most insurmountable problem of additive now, as expensive, coal adaptability is poor, stability is on the low side, develop the development that cost performance is high, coal adaptability is wide slurries additive agent can promote coal water slurry, improve the economic benefit of enterprise.
Summary of the invention
The object of the invention is to provide a kind of application of slurries additive agent, solves above-mentioned deficiency, and it is low-consuming, efficiency is high, and the coal water slurry surface viscosity of preparation is low, concentration is high, good stability; Can be used for the coal of different rank simultaneously, there is suitability widely.
To achieve these goals, present invention employs following technical scheme:
An application for slurries additive agent, comprises the following steps:
The making of slurries additive agent: slurries additive agent is grouped into by the one-tenth of following weight percent: aliphatics dispersion agent 30-50%; Lignins dispersion agent 10-30%; Melamine series dispersion agent 10-20%; Grinding aid 2-5%; Stablizer 10-20%; Auxiliary agent 5-10%;
Liquid processed: at normal temperatures and pressures, each component of slurries additive agent is composite is mixed with the solution that solid content is 20% further afterwards;
Mixing: pipette slurries additive agent, after stirring with stirring arm, add coal sample; Described slurries additive agent consumption is the 0.1%-0.5% of coal water slurry weight.
Wherein, described aliphatics dispersion agent is sulfonation aldehyde ketone polycondensate.
Wherein, described Lignins dispersion agent is sodium lignosulfonate, calcium lignin sulphonate, lignosulfonic acid potassium or ammonium lignosulphonate.
Wherein, described melamine series dispersion agent is sulfonated melamine compound condenses or sulfonated melamine urea-formaldehyde condensation product.
Wherein, described grinding aid is sodium maleate.
Wherein, described stablizer is polyvinyl alcohol, sodium polyacrylate, organobentonite.
Wherein, described auxiliary agent is conditioning agent, emulsifying agent.
Beneficial effect of the present invention is: after using above-mentioned additive, and the main body of coal is organic, and surface has strong hydrophobicity, is not easily spontaneously wet out by water.Fine particle is easily coalescent in water, adds the character that additive can change coal particle surface, makes coal particle surface be added agent molecule and hydration shell encirclement tightly, improve the wettability of coal particle, allow coal particle be dispersed in water, prevent coalescent, and improve coal water slurry mobility.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with embodiment, the present invention is described in further detail.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not limited to the technical solution.
Slurries additive agent embodiment 1-4:
Each component proportion is as following table (by weight percentage)
Embodiment coal sample coal analysis used prepared by table 2
Application Example 1
Adopt the coal slurrying of Bao shop, dispersion agent obtains according to preparation embodiment 1, consumption is 0.4% of coal water slurry weight, coal dust median size is 60 μm, coal water slurry apparent viscosity 1000 ~ 1200mPaS (20 DEG C, measure under 30s-1 shearing rate), water coal slurry concentration 68.3%, good fluidity, anti-shear ability is strong, places 72 hours without hard-caked sediment.
Application Example 2
Adopt Firing Shenhua Coal slurrying, dispersion agent obtains according to preparation embodiment 2, consumption is 0.3% of coal water slurry weight, coal dust median size is 60 μm, coal water slurry apparent viscosity 1000 ~ 1200mPaS (20 DEG C, measure under 30s-1 shearing rate), water coal slurry concentration 60.4%, good fluidity, anti-shear ability is strong, places 72 hours without hard-caked sediment.
Application Example 3
Adopt long flat coal slurrying, dispersion agent obtains according to preparation embodiment 3, consumption is 0.3% of coal water slurry weight, coal dust median size is 60 μm, coal water slurry apparent viscosity 1000 ~ 1200mPaS (20 DEG C, measure under 30s-1 shearing rate), water coal slurry concentration 71.4%, good fluidity, anti-shear ability is strong, places 72 hours without hard-caked sediment.
Application Example 4
Adopt the slurrying of royal cell coal, dispersion agent obtains according to preparation embodiment 4, consumption is 0.3% of coal water slurry weight, coal dust median size is 60 μm, coal water slurry apparent viscosity 1000 ~ 1200mPaS (20 DEG C, measure under 30s-1 shearing rate), water coal slurry concentration 67.4%, good fluidity, anti-shear ability is strong, places 72 hours without hard-caked sediment.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (7)
1. an application for slurries additive agent, is characterized in that, comprises the following steps:
The making of slurries additive agent: slurries additive agent is grouped into by the one-tenth of following weight percent: aliphatics dispersion agent 30-50%; Lignins dispersion agent 10-30%; Melamine series dispersion agent 10-20%; Grinding aid 2-5%; Stablizer 10-20%; Auxiliary agent 5-10%;
Liquid processed: at normal temperatures and pressures, each component of slurries additive agent is composite is mixed with the solution that solid content is 20% further afterwards;
Mixing: pipette slurries additive agent, after stirring with stirring arm, add coal sample; Described slurries additive agent consumption is the 0.1%-0.5% of coal water slurry weight.
2. the application of a kind of slurries additive agent according to claim 1, is characterized in that, described aliphatics dispersion agent is sulfonation aldehyde ketone polycondensate.
3. the application of a kind of slurries additive agent according to claim 1, is characterized in that, described Lignins dispersion agent is sodium lignosulfonate, calcium lignin sulphonate, lignosulfonic acid potassium or ammonium lignosulphonate.
4. the application of a kind of slurries additive agent according to claim 1, is characterized in that, described melamine series dispersion agent is sulfonated melamine compound condenses or sulfonated melamine urea-formaldehyde condensation product.
5. the application of a kind of slurries additive agent according to claim 1, is characterized in that, described grinding aid is sodium maleate.
6. the application of a kind of slurries additive agent according to claim 1, is characterized in that, described stablizer is polyvinyl alcohol, sodium polyacrylate, organobentonite.
7. the application of a kind of slurries additive agent according to claim 1, is characterized in that, described auxiliary agent is conditioning agent, emulsifying agent.
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| CN201510442594.6A CN105038879A (en) | 2015-07-24 | 2015-07-24 | Application of coal water slurry additive |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105296028A (en) * | 2015-11-20 | 2016-02-03 | 中国海洋石油总公司 | Composite coal slurry dispersant used in coal chemical engineering field |
| CN105647605A (en) * | 2016-02-04 | 2016-06-08 | 常州市奥普泰科光电有限公司 | Preparation method of water-coal slurry dispersing agent |
| GB2562557A (en) * | 2018-01-19 | 2018-11-21 | A P Moeller Mærsk As | Slurry fuel suspension and method for preparation |
| CN109266410A (en) * | 2018-11-27 | 2019-01-25 | 安徽理工大学 | A kind of slurries additive agent with grind -aiding effect |
| CN110317649A (en) * | 2019-07-12 | 2019-10-11 | 中国神华煤制油化工有限公司 | A kind of slurries additive agent composition and water-coal-slurry |
| CN111154520A (en) * | 2020-01-09 | 2020-05-15 | 苏州永峰联环保科技有限公司 | Lignin-free coal water slurry additive and coal water slurry prepared by using same |
| CN112175688A (en) * | 2020-10-22 | 2021-01-05 | 安徽海螺新材料科技有限公司 | Cement clinker calcination fire coal additive and preparation method thereof |
| CN112852512A (en) * | 2021-01-12 | 2021-05-28 | 中国矿业大学 | Method for preparing high-performance coal water slurry by quickly matching coal types |
-
2015
- 2015-07-24 CN CN201510442594.6A patent/CN105038879A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105296028A (en) * | 2015-11-20 | 2016-02-03 | 中国海洋石油总公司 | Composite coal slurry dispersant used in coal chemical engineering field |
| CN105296028B (en) * | 2015-11-20 | 2017-01-25 | 中海油天津化工研究设计院有限公司 | Composite coal slurry dispersant used in coal chemical engineering field |
| CN105647605A (en) * | 2016-02-04 | 2016-06-08 | 常州市奥普泰科光电有限公司 | Preparation method of water-coal slurry dispersing agent |
| GB2562557A (en) * | 2018-01-19 | 2018-11-21 | A P Moeller Mærsk As | Slurry fuel suspension and method for preparation |
| CN109266410A (en) * | 2018-11-27 | 2019-01-25 | 安徽理工大学 | A kind of slurries additive agent with grind -aiding effect |
| CN110317649A (en) * | 2019-07-12 | 2019-10-11 | 中国神华煤制油化工有限公司 | A kind of slurries additive agent composition and water-coal-slurry |
| CN110317649B (en) * | 2019-07-12 | 2021-03-16 | 中国神华煤制油化工有限公司 | Coal water slurry additive composition and coal water slurry |
| CN111154520A (en) * | 2020-01-09 | 2020-05-15 | 苏州永峰联环保科技有限公司 | Lignin-free coal water slurry additive and coal water slurry prepared by using same |
| CN112175688A (en) * | 2020-10-22 | 2021-01-05 | 安徽海螺新材料科技有限公司 | Cement clinker calcination fire coal additive and preparation method thereof |
| CN112852512A (en) * | 2021-01-12 | 2021-05-28 | 中国矿业大学 | Method for preparing high-performance coal water slurry by quickly matching coal types |
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