CN102199459A - Aliphatic additive for coal water slurry - Google Patents
Aliphatic additive for coal water slurry Download PDFInfo
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- CN102199459A CN102199459A CN2011100888476A CN201110088847A CN102199459A CN 102199459 A CN102199459 A CN 102199459A CN 2011100888476 A CN2011100888476 A CN 2011100888476A CN 201110088847 A CN201110088847 A CN 201110088847A CN 102199459 A CN102199459 A CN 102199459A
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Abstract
The invention relates to the field of Texaco coal gasification and preparation of coal water slurry used as fuel, in particular to an additive for coal water slurry. The additive for coal water slurry is prepared by using acetone, formaldehyde and sodium sulfite as raw materials and is the additive of coal water slurry of sulphonated acetone-formaldehyde condensed polymers (SAF). The additive has the advantages of wide source of raw materials, reasonable price and low toxicity; in addition, the slurry added with the additive has the pseudo plasticity, and the shear resistance is high.
Description
Affiliated technical field
The present invention relates to Texaco's gasification and fuel coal water slurry preparation field, particularly a kind of aliphatics slurries additive agent.
Background technology
Coal water slurry is a kind of heterogeneous coal-water mixture (60～70% a coal dust, 29～39% water and less than 1% additive), it is novel coal based fluid fuel, both having kept the burning of coal characteristic, the characteristics of liquid fuel are arranged again, is the coal clean technology of an at present Chinese reality.In recent years, because rich coal resources, low price, the working method of coal water slurry is simple again, compares with gasification, the liquefaction of coal, and less investment, cost are low, as the generally attention that is subjected to countries in the world for oil fuel.
Slurries additive agent is the key of preparation high quality water coal slurry, be additive based on naphthalene on China slurries additive agent market at present, but rise along with crude oil price, the naphthalene that with the oil is raw material is that the additive price also rises steadily, though other additives such as humic acid system, sulfonated lignin are the additive low price, usefulness is lower; Efficient additive price such as polyolefin, polycarboxylic acid series is higher again, and therefore, it is significant to develop the high additive of the new ratio of performance to price.Sulphonated acetone formaldehyde polycondensates is the new additive agent of succeeding in developing early 1990s, and it has the advantage that raw material sources are extensive, moderate, toxicity is lower.
Summary of the invention
The objective of the invention is to acetone, formaldehyde and S-WAT is raw material, and a kind of sulphonated acetone formaldehyde polycondensates coal water slurry additive (SAF) is provided.
Concrete scheme of the present invention is as follows:
A, a certain amount of sulphite and suitable quantity of water are joined in the four-hole bottle that electric mixer, thermometer, dropping funnel and reflux condensing tube are housed the sulfite solution of preparation proper concn;
B, drip acetone at normal temperatures, hierarchy of control temperature is no more than 40 ℃, along with the adding of acetone, can occur by the adularescent insolubles, finishes until dripping, and white insolubles does not disappear yet, and reacts 0.5～1.0h under this temperature;
C, be warming up to 80 ℃ then, add the formaldehyde solution of specified amount in this process from dropping funnel; Along with the dropping of formaldehyde, white insolubles dissolves gradually, and it is yellow that solution gradually becomes, and becomes scarlet at last;
D, add behind the formaldehyde and continue reaction 3～4h, promptly get solid part massfraction and be about 30% dark red solution, i.e. sulphonated acetone formaldehyde polycondensates coal water slurry additive (SAF) at 80～85 ℃.
Described acetone, AR originates in Tianjin Hedong District red rock chemical reagent work; Described formaldehyde solution belongs to industrial goods, originates in the Beijing Chemical Plant, and w (formaldehyde)=36%; Described sodium sulphite anhydrous 99.3, AR originates in Tianjin chemical industry all generations company limited.
Among the described step c, in the dropping process of formaldehyde, should control rate of addition, make system temperature be no more than 80 ℃.
The best proportioning of reactant of the present invention is n (S-WAT): n (formaldehyde): n (acetone)=0.4: 2.1: 1.05, and this moment sulfonated polycondensate good water solubility, dispersing property the best, it is the aliphatics macromolecular compound that contains hydrophilic radicals such as hydroxyl, carbonyl and sulfonic group that infrared spectra (FTIR) is analyzed SAF.The FTIR analysis of spectra is seen accompanying drawing 1.
The present invention is synthetic SAF slurrying under the optimum mole ratio condition, is w (SAF)=0.8% o'clock at its dosage, and the highest glutinous surely concentration reaches 66%.Rheological experimental studies have found that slurry belongs to pseudoplastic fluid, has remarkable characteristic of thixotropic property, and along with the prolongation of shear time, the slurry viscosity is tending towards constant, has shear resistant preferably.The flow curve of SAF slurrying is seen accompanying drawing 2, and the viscosity of slurry is seen accompanying drawing 3 with the change curve of shear time.
The chemical structural formula of SAF of the present invention is:
Beneficial effect of the present invention is:
The present invention have raw material sources extensively, moderate, advantage that toxicity is lower, and the slurry after adding has the pseudo-plasticity feature, shear resistant is good.
Description of drawings
Fig. 1 is the FTIR analysis of spectra;
Fig. 2 is the flow curve of SAF slurrying;
Fig. 3 is the change curve of the viscosity of slurry with shear time.
Embodiment
Below in conjunction with specific embodiment the present invention is described in further detail.
Coal: Shenmu County converges gloomy colliery
Table 1 embodiment 1 coal product are analyzed
Add-on and mode: with solid part massfraction is about 30% solution, directly adds the water-coal-slurry slurring process;
Water coal slurry property:
Table 2 embodiment 1 water coal slurry property analysis
Conclusion: leave standstill and tested its stability in 8 hours, the result does not have obvious sediment.
Coal: Shenmu County state China colliery
Table 3 embodiment 2 coal product are analyzed
Add-on and mode: with solid part massfraction is about 30% solution, directly adds the water-coal-slurry slurring process; Water coal slurry property:
Table 4 embodiment 2 water coal slurry property analyses
Conclusion: leave standstill and tested its stability in 8 hours, the result does not have obvious sediment.
Coal: caragana microphylla tower colliery, Shenmu County
Table 5 embodiment 3 coal product are analyzed
Add-on and mode: with solid part massfraction is about 30% solution, directly adds the water-coal-slurry slurring process; Water coal slurry property:
Table 6 embodiment 3 water coal slurry property analyses
Conclusion: leave standstill and tested its stability in 8 hours, the result does not have obvious sediment.
More than three kinds of embodiment add additive of the present invention after different coals are made coal water slurry, the slurry after the interpolation has the pseudo-plasticity feature, shear resistant is good, does not all have obvious sediment.
Claims (5)
1. an aliphatics slurries additive agent is characterized in that, may further comprise the steps:
A, a certain amount of sulphite and suitable quantity of water are joined in the four-hole bottle that electric mixer, thermometer, dropping funnel and reflux condensing tube are housed the sulfite solution of preparation proper concn;
B, drip acetone at normal temperatures, hierarchy of control temperature is no more than 40 ℃, along with the adding of acetone, can occur by the adularescent insolubles, finishes until dripping, and white insolubles does not disappear yet, and reacts 0.5～1.0h under this temperature;
C, be warming up to 80 ℃ then, add the formaldehyde solution of specified amount in this process from dropping funnel; Along with the dropping of formaldehyde, white insolubles dissolves gradually, and it is yellow that solution gradually becomes, and becomes scarlet at last;
D, add behind the formaldehyde and continue reaction 3～4h, promptly get solid part massfraction and be about 30% dark red solution, i.e. sulphonated acetone formaldehyde polycondensates coal water slurry additive (SAF) at 80～85 ℃.
Described acetone, AR originates in Tianjin Hedong District red rock chemical reagent work; Described formaldehyde solution belongs to industrial goods, originates in the Beijing Chemical Plant, and w (formaldehyde)=36%; Described sodium sulphite anhydrous 99.3, AR originates in Tianjin chemical industry all generations company limited.Among the described step c, in the dropping process of formaldehyde, should control rate of addition, make system temperature be no more than 80 ℃.
2. a kind of aliphatics slurries additive agent according to claim 1 is characterized in that, is raw material with acetone, formaldehyde and S-WAT.
3. according to claim 1,2 described a kind of aliphatics slurries additive agents is characterized in that, the best proportioning of reactant is n (S-WAT): n (formaldehyde): n (acetone)=0.4: 2.1: 1.05.
4. according to claim 1,2 described a kind of aliphatics slurries additive agents is characterized in that, synthetic SAF slurrying under the optimum mole ratio condition is w (SAF)=0.8% o'clock at its dosage, and the highest glutinous surely concentration reaches 66%.
5. according to claim 1,2 described a kind of aliphatics slurries additive agents is characterized in that the SAF chemical structural formula is:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100888476A CN102199459A (en) | 2011-04-08 | 2011-04-08 | Aliphatic additive for coal water slurry |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100888476A CN102199459A (en) | 2011-04-08 | 2011-04-08 | Aliphatic additive for coal water slurry |
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| CN102199459A true CN102199459A (en) | 2011-09-28 |
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| CN2011100888476A Pending CN102199459A (en) | 2011-04-08 | 2011-04-08 | Aliphatic additive for coal water slurry |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106281513A (en) * | 2015-10-19 | 2017-01-04 | 刘剑锋 | A kind of modified aliphatic slurries additive agent and preparation method thereof |
| CN109022072A (en) * | 2018-08-10 | 2018-12-18 | 福州大学 | A kind of water-coal-slurry and preparation method thereof using the preparation of heat-engine plant desulfurized waste water |
| CN109022061A (en) * | 2018-08-10 | 2018-12-18 | 福州大学 | A method of aliphatic additive for coal water slurry is prepared using heat-engine plant desulfurized waste water |
| CN113817177A (en) * | 2021-07-16 | 2021-12-21 | 兖矿新疆煤化工有限公司 | Modified lignosulfonate dispersant, preparation method and application in coal water slurry |
-
2011
- 2011-04-08 CN CN2011100888476A patent/CN102199459A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106281513A (en) * | 2015-10-19 | 2017-01-04 | 刘剑锋 | A kind of modified aliphatic slurries additive agent and preparation method thereof |
| CN109022072A (en) * | 2018-08-10 | 2018-12-18 | 福州大学 | A kind of water-coal-slurry and preparation method thereof using the preparation of heat-engine plant desulfurized waste water |
| CN109022061A (en) * | 2018-08-10 | 2018-12-18 | 福州大学 | A method of aliphatic additive for coal water slurry is prepared using heat-engine plant desulfurized waste water |
| CN113817177A (en) * | 2021-07-16 | 2021-12-21 | 兖矿新疆煤化工有限公司 | Modified lignosulfonate dispersant, preparation method and application in coal water slurry |
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Application publication date: 20110928 |