CN106281511A - Coal water slurry dispersing agent - Google Patents
Coal water slurry dispersing agent Download PDFInfo
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- CN106281511A CN106281511A CN201510304155.9A CN201510304155A CN106281511A CN 106281511 A CN106281511 A CN 106281511A CN 201510304155 A CN201510304155 A CN 201510304155A CN 106281511 A CN106281511 A CN 106281511A
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Abstract
Coal water slurry dispersing agent, the present invention relates to building material technical field, its constituent is: crude naphthalene 100-200kg, the concentrated sulphuric acid 290-430kg of 98%, water 200-300kg, the sodium hydroxide 60-90kg of formaldehyde 90-100kg, 300g/L of 37%, lime water 30-50kg, polyacrylamide 90-150kg.Its Stability Analysis of Structures, not stratified, do not precipitate, and dispersion effect is good, does not has waste discharge, environmental protection and economy.
Description
Technical field
The present invention relates to building material technical field, be specifically related to coal water slurry dispersing agent.
Background technology
Dispersant can be divided into ion-type and the big class of nonionic two by whether dissociating.Ion-type can be divided into anionic, cationic and amphoteric three class by the attribute of electric charge again.Amphoteric refers to show anion characteristic when solution alkaline, shows cationic characteristic during in acidity.The international price of anion, nonionic, cation and amphoteric dispersant is than for 1:2:3:4.Slurrying dispersant more options anionic.Anionic dispersing agent mainly has naphthalene sulfonate, lignosulfonates, sulfonation humic acid salt, polycarboxylic-acid etc..
The mechanism of action of dispersant has: (1) improves the hydrophilic on coal surface, dispersant is that one can promote dispersion phase (the coal grain in water-coal-slurry) homodisperse chemical agent in disperse medium (water in water-coal-slurry), coal main body is nonpolar Hydrocarbon, belong to lyophobic dust, the wettability of coal can be divided into the fourth class by the water contact angle size on its surface, it is zero by feeler, claims strongly hydrophilic coal, claim weak aqueous coal less than 40 ° of persons；40 ° ~ 90 ° persons, claim hydrophobicity coal；Strong-hydrophobicity coal, the surface of various coals is claimed all to show hydrophobicity more than 90 ° of persons；(2) electrostatic repulsion of coal intergranular is strengthened, the prerequisite of colloidal solid stable dispersion is that intergranular electrostatic repulsion exceedes intergranular Fan Shi gravitation, ionic dispersant decapacitation improves outside the hydrophilic on coal surface, its electrostatic repulsion can also be strengthened, promote coal grain to be scattered in aqueous medium further；null(3) spatial separation steric effect，Water in hydration shell is different from " Free water " in system，It because of the attraction by surface field in aligning，When granule is close to each other，Hydration shell extrusion，Gravitation then tries hard to recover original orientation，Hydration shell is thus made to show certain elasticity，Make coal grain dispersed，And the dispersant of particle surface has certain thickness，When the granule of two band adsorption layers is overlapped，Owing to the degree of freedom of adsorption layer dispersant molecule motion is hindered，The entropy of binding molecule reduces，Because the entropy of system the most spontaneously develops to increase direction，So granule has the most separate tendency，Avoid particle aggregation，When dispersant is macromole，Adsorbed molecule has long hydrophilic chain，Three-dimensional hydration shell is formed on coal surface，When granule is close to each other，Produce stronger repulsive force，The dispersion of coal grain is caused to suspend，This repulsion is spatial separation steric hindrance or steric hindrance.
Existing coal water slurry dispersing agent stability is bad, easily layering and precipitation, and dispersion effect is bad, has refuse to discharge.
Summary of the invention
Present invention aims to defect and the deficiency of prior art, it is provided that coal water slurry dispersing agent, Stability Analysis of Structures, not stratified, do not precipitate, and dispersion effect is good, does not has waste discharge, environmental protection and economy.
For achieving the above object, the technical solution used in the present invention is: its constituent is: crude naphthalene 100-200kg, the concentrated sulphuric acid 290-430kg of 98%, water 200-300kg, the sodium hydroxide 60-90kg of formaldehyde 90-100kg, 300g/L of 37%, lime water 30-50kg, polyacrylamide 90-150kg.
The Making programme of the present invention is as follows:
One, in 1000L reactor, add 100-200kg crude naphthalene, add heat fusing, it is warmed up to when 120 DEG C start stirring, is then warmed up to 150 DEG C, starts to be slowly added to 98% concentrated sulphuric acid 140-180kg, under stirring at 160 ~ 165 DEG C constant temperature 2 ~ 3 hours, carry out sulfonating reaction；
Two, after reaction terminates, being cooled to 120 DEG C, add water 100-150kg, hydrolyzes 50 minutes in 110 ~ 120 DEG C, then adds concentrated sulphuric acid 150-250kg, make total acidity maintain about 30%；
Three, when reactant is cooled to about 90 DEG C, increased in 2 hours after dripping 37% formaldehyde 90-100kg, at 100 ~ 105 DEG C, carry out condensation reaction 2 hours；
Four, when condensation reaction is complete, the water of addition 100-150kg stirs, add NaOH solution 60-90kg of 300g/L again, stir, adjust pH value to 7 ~ 9 with lime water 30-50kg, be subsequently adding the polyacrylamide of 90-150kg, dissolve, stir 30 minutes, carry out vacuum filtration, filtrate is concentrated to 50%, it is spray-dried and i.e. prepares brown ceramic powder dress product, or be concentrated to certain concentration and obtain fluid product.
Use after said structure, present invention have the beneficial effect that coal water slurry dispersing agent of the present invention, Stability Analysis of Structures, not stratified, do not precipitate, and dispersion effect is good, does not has waste discharge, environmental protection and economy.
Detailed description of the invention
Detailed description of the invention one:
This detailed description of the invention the technical scheme is that its constituent is: crude naphthalene 120-180kg, the concentrated sulphuric acid 290-430kg of 98%, water 200-300kg, the sodium hydroxide 65-80kg of formaldehyde 90-98kg, 300g/L of 37%, lime water 30-50kg, polyacrylamide 95-110kg.
The Making programme of the present invention is as follows:
One,
In 1000L reactor, add 120-180kg crude naphthalene, add heat fusing, it is warmed up to when 120 DEG C start stirring, is then warmed up to 150 DEG C, starts to be slowly added to 98% concentrated sulphuric acid 140-180kg, under stirring at 160 ~ 165 DEG C constant temperature 2 ~ 3 hours, carry out sulfonating reaction；
Two, after reaction terminates, being cooled to 120 DEG C, add water 100-150kg, hydrolyzes 50 minutes in 110 ~ 120 DEG C, then adds concentrated sulphuric acid 150-250kg, make total acidity maintain about 30%；
Three, when reactant is cooled to about 90 DEG C, increased in 2 hours after dripping 37% formaldehyde 90-98kg, at 100 ~ 105 DEG C, carry out condensation reaction 2 hours；
Four, when condensation reaction is complete, the water of addition 100-150kg stirs, add NaOH solution 65-80kg of 300g/L again, stir, adjust pH value to 7 ~ 9 with lime water 30-50kg, be subsequently adding the polyacrylamide of 95-110kg, dissolve, stir 30 minutes, carry out vacuum filtration, filtrate is concentrated to 50%, it is spray-dried and i.e. prepares brown ceramic powder dress product, or be concentrated to certain concentration and obtain fluid product.
Present invention have the beneficial effect that coal water slurry dispersing agent of the present invention, Stability Analysis of Structures, not stratified, do not precipitate, and dispersion effect is good, does not has waste discharge, environmental protection and economy.
Detailed description of the invention two:
This detailed description of the invention the technical scheme is that its constituent is: crude naphthalene 150kg, the concentrated sulphuric acid 300kg of 98%, water 220kg, the sodium hydroxide 70.8kg of formaldehyde 95kg, 300g/L of 37%, lime water 40kg, polyacrylamide 100kg.
The Making programme of the present invention is as follows:
One, in 1000L reactor, add 150kg crude naphthalene, add heat fusing, it is warmed up to when 120 DEG C start stirring, is then warmed up to 150 DEG C, starts to be slowly added to 98% concentrated sulphuric acid 152kg, under stirring at 160 ~ 165 DEG C constant temperature 2 ~ 3 hours, carry out sulfonating reaction；
Two, after reaction terminates, being cooled to 120 DEG C, add water 120kg, hydrolyzes 50 minutes in 110 ~ 120 DEG C, then adds concentrated sulphuric acid 148kg, make total acidity maintain about 30%；
Three, when reactant is cooled to about 90 DEG C, increased in 2 hours after dripping 37% formaldehyde 95kg, at 100 ~ 105 DEG C, carry out condensation reaction 2 hours；
Four, when condensation reaction is complete, the water of addition 100kg stirs, add NaOH solution 70.8kg of 300g/L again, stir, adjust pH value to 7 ~ 9 with lime water 40kg, be subsequently adding the polyacrylamide of 100 kg, dissolve, stir 30 minutes, carry out vacuum filtration, filtrate is concentrated to 50%, it is spray-dried and i.e. prepares brown ceramic powder dress product, or be concentrated to certain concentration and obtain fluid product.
The above is only in order to illustrate technical scheme and unrestricted, other amendment or equivalent that technical scheme is made by those of ordinary skill in the art, without departing from the spirit and scope of technical solution of the present invention, all should contain in the middle of scope of the presently claimed invention.
Claims (2)
1. coal water slurry dispersing agent, it is characterised in that: its constituent is: crude naphthalene 100-200kg, the concentrated sulphuric acid 290-430kg of 98%, water 200-300kg, the sodium hydroxide 60-90kg of formaldehyde 90-100kg, 300g/L of 37%, lime water, polyacrylamide 90-150kg.
2. coal water slurry dispersing agent, it is characterised in that: its Making programme is as follows:
(1), in 1000L reactor, add 100-200kg crude naphthalene, add heat fusing, it is warmed up to when 120 DEG C start stirring, is then warmed up to 150 DEG C, starts to be slowly added to 98% concentrated sulphuric acid 140-180kg, under stirring at 160 ~ 165 DEG C constant temperature 2 ~ 3 hours, carry out sulfonating reaction；
(2), reaction terminate after, be cooled to 120 DEG C, add water 100-150kg, in 110 ~ 120 DEG C hydrolyze 50 minutes, then add concentrated sulphuric acid 150-250kg, make total acidity maintain about 30%；
(3), reactant is when being cooled to about 90 DEG C, increases after dripping 37% formaldehyde 90-100kg, carry out condensation reaction 2 hours at 100 ~ 105 DEG C in 2 hours；
(4) when, condensation reaction is complete, the water of addition 100-150kg stirs, add NaOH solution 60-90kg of 300g/L again, stir, adjust pH value to 7 ~ 9 with lime water 30-50kg, be subsequently adding the polyacrylamide of 90-150kg, dissolve, stir 30 minutes, carry out vacuum filtration, filtrate is concentrated to 50%, it is spray-dried and i.e. prepares brown ceramic powder dress product, or be concentrated to certain concentration and obtain fluid product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510304155.9A CN106281511A (en) | 2015-06-08 | 2015-06-08 | Coal water slurry dispersing agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510304155.9A CN106281511A (en) | 2015-06-08 | 2015-06-08 | Coal water slurry dispersing agent |
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| Publication Number | Publication Date |
|---|---|
| CN106281511A true CN106281511A (en) | 2017-01-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510304155.9A Pending CN106281511A (en) | 2015-06-08 | 2015-06-08 | Coal water slurry dispersing agent |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109233923A (en) * | 2018-11-26 | 2019-01-18 | 萍乡市乐乐腐植酸厂 | A kind of method that crude product humic acid prepares humic acid dispersant |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101543745A (en) * | 2009-05-06 | 2009-09-30 | 北京华中新工贸有限公司 | Method for preparing dispersant and dispersant |
| CN101735870A (en) * | 2009-12-16 | 2010-06-16 | 北京海淀华煤水煤浆技术开发中心 | Coal water slurry additive and preparation method and application thereof |
| CN102250655A (en) * | 2011-06-10 | 2011-11-23 | 天津市双盛化学助剂工贸有限公司 | Preparation method of high-fluidity gasified water-coal slurry dispersant |
| CN103509617A (en) * | 2013-01-17 | 2014-01-15 | 湖南东盈煤化工技术开发有限公司 | Special composite coal water slurry additive for coal gasification |
-
2015
- 2015-06-08 CN CN201510304155.9A patent/CN106281511A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101543745A (en) * | 2009-05-06 | 2009-09-30 | 北京华中新工贸有限公司 | Method for preparing dispersant and dispersant |
| CN101735870A (en) * | 2009-12-16 | 2010-06-16 | 北京海淀华煤水煤浆技术开发中心 | Coal water slurry additive and preparation method and application thereof |
| CN102250655A (en) * | 2011-06-10 | 2011-11-23 | 天津市双盛化学助剂工贸有限公司 | Preparation method of high-fluidity gasified water-coal slurry dispersant |
| CN103509617A (en) * | 2013-01-17 | 2014-01-15 | 湖南东盈煤化工技术开发有限公司 | Special composite coal water slurry additive for coal gasification |
Non-Patent Citations (3)
| Title |
|---|
| 何国锋: "《水煤浆新技术研发及实践》", 29 February 2012 * |
| 徐江华 等: ""萘磺酸甲醛缩合物的合成及其在水煤浆添加剂中的应用"", 《淮南矿业学院学报》 * |
| 马宝岐等: "《煤焦油制燃料油品》", 31 January 2011 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109233923A (en) * | 2018-11-26 | 2019-01-18 | 萍乡市乐乐腐植酸厂 | A kind of method that crude product humic acid prepares humic acid dispersant |
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