CN107353952B - A kind of coal water slurry dispersing agent and preparation method thereof - Google Patents
A kind of coal water slurry dispersing agent and preparation method thereof Download PDFInfo
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- CN107353952B CN107353952B CN201710510716.XA CN201710510716A CN107353952B CN 107353952 B CN107353952 B CN 107353952B CN 201710510716 A CN201710510716 A CN 201710510716A CN 107353952 B CN107353952 B CN 107353952B
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- 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
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- 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
- C10L1/18—Organic compounds containing oxygen
- C10L1/1817—Compounds of uncertain formula; reaction products where mixtures of compounds are obtained
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- 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
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- 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
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- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Emergency Medicine (AREA)
- Combustion & Propulsion (AREA)
- Emulsifying, Dispersing, Foam-Producing Or Wetting Agents (AREA)
- Solid Fuels And Fuel-Associated Substances (AREA)
- Liquid Carbonaceous Fuels (AREA)
Abstract
The invention discloses a kind of coal water slurry dispersing agents and preparation method thereof, belong to slurries additive agent technical field.The present invention includes the raw material of following parts by weight: 40~50 portions of modified lignin resin concentrates, 15~20 parts of dried objects, 1~3 part of citric acid, 3~5 parts of dicyclohexyl ammonium nilrites, 0.3~0.5 part of dodecyl dimethyl benzyl ammonium bromide and 80~100 parts of water, dispersing agent prepared by the present invention can make the water-coal-slurry of solid content 60~70% have excellent peptizaiton and stabilization, this divides three-level to be suitable for a variety of coals, while having good hydrophily.
Description
Technical field
The present invention relates to a kind of coal water slurry dispersing agents, belong to slurries additive agent technical field.
Background technique
Water-coal-slurry be using physical method by coal, water, additive liquefied New-type fuel, it is original that it had both maintained coal
Physical features, and with the mobility and stability as image-stone oil, referred to as liquid coal product.Dispersing agent is water-coal-slurry
Important additives in preparation process, the main function of dispersing agent are change coal hydrosphere surface properties, coal grain are promoted to divide in water
It dissipates, makes coal body that there is good rheological characteristic.
The type of dispersing agent mainly has anionic, cationic and non-ionic, commonly mainly have anionic and
It is non-ionic.Anionic dispersing agent can be divided into synthetic organic polymer dispersing agent again and natural macromolecule modification dispersing agent two is big
Class.Wherein natural macromolecule modification dispersing agent mainly has Lignins dispersing agent and humic acid system dispersing agent；Synthesize organic high score
Sub- dispersing agent mainly has naphthalene sulfonate system, polyene hydrocarbon sulfonate system, polycarboxylate system etc..The characteristics of humic acid Series Dispersant is point
It is strong to dissipate performance, can be used alone, but the stability and hydrophily that are slurried are poor.The advantages of lignosulfonates Series Dispersant
Source is extensive, and stability is preferable, the disadvantage is that slurrying viscosity is larger, slurry mobility is bad.The naphthalene sulfonate polymer of all kinds of substituent groups
The feature of series is that edible range is wide, good dispersion, and dehesion effect is strong, but slurry stability is poor.Polyolefin series dispersing agent pair
Low ash water-coal-slurry has preferable dispersion stabilization, but needs strict control molecular mass and its distribution.The dispersion of polycarboxylic acids series
Agent, such as polycyclic polybasic carboxylic acid, polycarboxylate, polyphosphate and hydroxybenzoic acid polymer sodium salt, have dispersion and stabilization concurrently
Double action, but fluidity of slurry is bad.Non-ionic dispersing agent is mainly that polyoxyethylene series and polyethylene oxide are serial, this kind of
The advantages of dispersing agent is that the amphipathic property of molecule and relative molecular mass can easily be accommodated and control, solvable in collecting water quality and coal
Object influences, and without adding stabilizer, but needs adapted defoaming agent, is suitable for preparing high-concentration coal-water slurry.
With the exhaustion of petroleum resources, people need to carry out strategic research and exploitation to coal chemical industry, coal oil field, and
The coal water slurry dispersing agent for developing a kind of stability and good hydrophilic property is one of the importance for pushing coal chemical industry fast development.
Summary of the invention
The technical problems to be solved by the invention: for coal water slurry dispersing agent used at present, that there are stability is poor, hydrophilic
Property difference defect, provide a kind of slurries additive agent.
In order to solve the above technical problems, the present invention is using technical solution as described below:
A kind of coal water slurry dispersing agent, the raw material including following parts by weight:
40~50 portions of modified lignin resin concentrates, 1~3 part of citric acid, 3~5 parts of dicyclohexyl ammonium nilrites, 0.3~0.5
Part dodecyl dimethyl benzyl ammonium bromide and 80~100 parts of water.
The modified lignin resin concentrate has following steps preparation: by 40~50g lignin and 300~400mL
Sodium periodate solution filters after mixing 40~50min, obtains filter residue, after filter residue is washed, then after reacting with 20~30g alanine
Filtering, obtains filter cake, will be centrifugated, is precipitated after the reaction of filter cake, 15~20g maleic acid and 0.1~0.3g ammonium persulfate
Object is concentrated after reacting sediment for 15% sodium sulfite with 200~300mL mass fraction.
The mass fraction of the sodium metaperiodate is 15%.
The raw material further includes 15~20 parts of dried objects in parts by weight.
The dried object is prepared by the following steps: after 15~20g fumaric acid and 100~200mL water are mixed, then
6~8g itaconic acid and 0.1~0.3g lauroyl peroxide is added, is spray-dried after being stirred to react 3~4h.
The temperature of the reaction is 80~90 DEG C.
A kind of preparation method of coal water slurry dispersing agent, specific preparation step are as follows: by modified lignin resin concentrate, citric acid,
Dicyclohexyl ammonium nilrite, dodecyl dimethyl benzyl ammonium bromide and water are added in blender, are stirred 5~10min
After charge, coal water slurry dispersing agent can be obtained.
The present invention is compared with other methods, and advantageous effects are:
(1) present invention can aoxidize lignin, make part by handling lignin with sodium metaperiodate
Alcohol radical is oxidized to aldehyde radical, and remaining part alcohol radical is grafted with maleic acid again, is dehydrated, and a part of group increases dredging for lignin
Aqueous energy, another part carry out sulfonation on phenyl ring, then by lignin, and the introducing of sulfonic acid group can make the hydrophilicity of compound
Increase, thermal stability enhancing and potential resistance to electrolyte contamination ability increase etc., and the change of these performances is for coal water slurry dispersing agent, it can
Can not only reduce the viscosity of water-coal-slurry in the case where coal water slurry dispersing agent additional amount is reduced, but also the water of high solids content can be made
The mobility and stability that coal slurry has had.
(2) present invention obtains polymer, fulvic acid and texture of coal have very by the way that fulvic acid to polymerize with itaconic acid
Monomer containing polar group, is polymerize, synthetic product not only has in richness by the feature of big similitude by polymerization reaction with it
The feature of sour macromolecular structure, while also polar group being introduced into macromolecular, the surface tension of water is reduced to a greater extent, is increased
Strongly hydrophilic.
Specific embodiment
It takes in the beaker that 40~50g lignin and 300~400mL mass fraction are 15% sodium periodate solution, mixing 40~
It is filtered after 50min, obtains filter residue, after filter residue is washed with water 3~5 times, obtain pretreatment lignin, then take the third ammonia of 20~30g
Acid and 200~300mL mass fraction are that beaker immigration digital display tests the speed constant temperature blender with magnetic force in the beaker of 75% ethanol solution
In, it is 60~70 DEG C in temperature, after revolving speed is stirred 3~5min under conditions of being 200~300r/min, adds pretreatment
Lignin, insulated and stirred react 5~6h, filter after reaction, obtain filter cake, by filter cake, 15~20g maleic acid and 300~
400mL dehydrated alcohol is added in three-necked flask, adds 0.1~0.3g ammonium persulfate, and three-necked flask is placed in water-bath
In, control bath temperature is 80~90 DEG C, and insulated and stirred reacts 3~4h, after reaction, place the product in centrifuge, with
The revolving speed of 5000~6000r/min is centrifugated 5~10min, sediment is obtained, by sediment and 200~300mL mass fraction
It is added in beaker, is placed the beaker in sand-bath pot for 15% sodium sulfite, control sand-bath temperature is 150~160 DEG C, and heat preservation is stirred
5~6h of reaction is mixed, reaction product is placed in Rotary Evaporators after reaction, 40~50min of concentrated by rotary evaporation obtains innovation wood
Quality concentrate takes 15~20g fulvic acid and 100~200mL water to be added in three-necked flask, add 6~8g itaconic acid and
0.1~0.3g lauroyl peroxide, three-necked flask is placed in water-bath, and control bath temperature is 80~90 DEG C, is stirred to react 3
~4h obtains dried object after reaction by product spray drying, finally according to parts by weight, takes 40~50 parts of modifications wooden
Plain concentrate, 15~20 parts of dried objects, 1~3 part of citric acid, 3~5 parts of dicyclohexyl ammonium nilrites, 0.3~0.5 part of dodecane
Base dimethylbenzyl ammonium bromide and 80~100 parts of water are added in blender, are charged, be can be obtained after being stirred 5~10min
Coal water slurry dispersing agent.
Example 1
It takes 40g lignin and 300mL mass fraction is to filter after mixing 40min in the beaker of 15% sodium periodate solution,
Filter residue is obtained, after filter residue is washed with water 3 times, obtains pretreatment lignin, then take 20g alanine and 200mL mass fraction is
In the beaker of 75% ethanol solution, beaker immigration digital display is tested the speed in constant temperature blender with magnetic force, is 60 DEG C in temperature, revolving speed is
After being stirred 3min under conditions of 200r/min, pretreatment lignin is added, insulated and stirred reacts 5h, after reaction mistake
Filter, obtains filter cake, filter cake, 15g maleic acid and 300mL dehydrated alcohol is added in three-necked flask, 0.1g persulfuric acid is added
Ammonium, and three-necked flask is placed in water-bath, control bath temperature is 80 DEG C, and insulated and stirred reaction 3h will be produced after reaction
Object is placed in a centrifuge, and is centrifugated 5min with the revolving speed of 5000r/min, is obtained sediment, by sediment and 200mL mass point
Number is that 15% sodium sulfite is added in beaker, is placed the beaker in sand-bath pot, and control sand-bath temperature is 150 DEG C, and insulated and stirred is anti-
5h is answered, reaction product is placed in Rotary Evaporators after reaction, concentrated by rotary evaporation 40min obtains modified lignin resin concentrate,
Finally according to parts by weight, 40 portions of modified lignin resin concentrates, 1 part of citric acid, 3 parts of dicyclohexyl ammonium nilrites, 0.3 part ten are taken
Dialkyl dimethyl Benzylphosphonium Bromide ammonium and 80 parts of water are added in blender, charge after being stirred 5min, water coal can be obtained
Starch dispersing agent.
Example 2
It takes 40g lignin and 300mL mass fraction is to filter after mixing 40min in the beaker of 15% sodium periodate solution,
Filter residue is obtained, after filter residue is washed with water 3 times, obtains pretreatment lignin, then take 20g alanine and 200mL mass fraction is
In the beaker of 75% ethanol solution, beaker immigration digital display is tested the speed in constant temperature blender with magnetic force, is 60 DEG C in temperature, revolving speed is
After being stirred 3min under conditions of 200r/min, pretreatment lignin is added, insulated and stirred reacts 5h, after reaction mistake
Filter, obtains filter cake, filter cake, 15g maleic acid and 300mL dehydrated alcohol is added in three-necked flask, 0.1g persulfuric acid is added
Ammonium, and three-necked flask is placed in water-bath, control bath temperature is 80 DEG C, and insulated and stirred reaction 3h will be produced after reaction
Object is placed in a centrifuge, and is centrifugated 5min with the revolving speed of 5000r/min, is obtained sediment, by sediment and 200mL mass point
Number is that 15% sodium sulfite is added in beaker, is placed the beaker in sand-bath pot, and control sand-bath temperature is 150 DEG C, and insulated and stirred is anti-
5h is answered, reaction product is placed in Rotary Evaporators after reaction, concentrated by rotary evaporation 40min obtains modified lignin resin concentrate,
It takes 15g fulvic acid and 100mL water to be added in three-necked flask, adds 6g itaconic acid and 0.1g lauroyl peroxide, Jiang Sankou
Flask is placed in water-bath, and control bath temperature is 80 DEG C, is stirred to react 3h, after reaction by product spray drying, is obtained
Dried object, finally according to parts by weight, take 40 portions of modified lignin resin concentrates, 15 parts of dried objects, 1 part of citric acid, 3 parts it is bicyclic oneself
Base ammonium nilrite, 0.3 part of dodecyl dimethyl benzyl ammonium bromide and 80 parts of water are added in blender, after being stirred 5min
Charging, can be obtained coal water slurry dispersing agent.
Example 3
It takes 40g lignin and 300mL mass fraction is to filter after mixing 40min in the beaker of 15% sodium periodate solution,
Filter residue is obtained, after filter residue is washed with water 3 times, obtains pretreatment lignin, then take 20g alanine and 200mL mass fraction is
In the beaker of 75% ethanol solution, beaker immigration digital display is tested the speed in constant temperature blender with magnetic force, is 60 DEG C in temperature, revolving speed is
After being stirred 3min under conditions of 200r/min, pretreatment lignin is added, insulated and stirred reacts 5h, after reaction mistake
Filter, obtains filter cake, filter cake, 15g maleic acid and 300mL dehydrated alcohol is added in three-necked flask, 0.1g persulfuric acid is added
Ammonium, and three-necked flask is placed in water-bath, control bath temperature is 80 DEG C, and insulated and stirred reaction 3h will be produced after reaction
Object is placed in a centrifuge, and is centrifugated 5min with the revolving speed of 5000r/min, is obtained sediment, by sediment and 200mL mass point
Number is that 15% sodium sulfite is added in beaker, is placed the beaker in sand-bath pot, and control sand-bath temperature is 150 DEG C, and insulated and stirred is anti-
5h is answered, reaction product is placed in Rotary Evaporators after reaction, concentrated by rotary evaporation 40min obtains modified lignin resin concentrate,
It takes 15g fulvic acid and 100mL water to be added in three-necked flask, adds 6g itaconic acid and 0.1g lauroyl peroxide, Jiang Sankou
Flask is placed in water-bath, and control bath temperature is 80 DEG C, is stirred to react 3h, after reaction by product spray drying, is obtained
Dried object, finally according to parts by weight, take 40 portions of modified lignin resin concentrates, 20 parts of dried objects, 1 part of citric acid, 3 parts it is bicyclic oneself
Base ammonium nilrite, 0.3 part of dodecyl dimethyl benzyl ammonium bromide and 80 parts of water are added in blender, after being stirred 5min
Charging, can be obtained coal water slurry dispersing agent.
Coal water slurry dispersing agent made from example 1~3 and commercially available coal water slurry dispersing agent (comparative example) service performance are examined
It surveys, testing result such as the following table 1:
1 coal water slurry dispersing agent of table
| Performance | Example 1 | Example 2 | Example 3 | Comparative example |
| Apparent viscosity (mpas) | 1200 | 634 | 674 | 618 |
| Mobility | B | A | A | C |
| Stability | Level-one | Level-one | It is superfine | Three-level |
In conclusion dispersing agent prepared by the present invention can make the water-coal-slurry of solid content 60~70% have excellent point
Effect and stabilization are dissipated, this divides three-level to be suitable for a variety of coals, while having good hydrophily.
Claims (6)
1. a kind of coal water slurry dispersing agent, which is characterized in that the raw material including following parts by weight:
40~50 portions of modified lignin resin concentrates, 1~3 part of citric acid, 3~5 parts of dicyclohexyl ammonium nilrites, 0.3~0.5 part ten
Dialkyl dimethyl Benzylphosphonium Bromide ammonium and 80~100 parts of water；The modified lignin resin concentrate has following steps preparation:
It is filtered after 40~50g lignin and 300~400mL sodium periodate solution are mixed 40~50min, filter residue is obtained, by filter residue water
It is filtered after washing, then after being reacted with 20~30g alanine, obtains filter cake, by filter cake, 15~20g maleic acid and 0.1~0.3g over cure
It is centrifugated after sour ammonium reaction, sediment is obtained, after sediment is reacted with 200~300mL mass fraction for 15% sodium sulfite
Concentration.
2. a kind of coal water slurry dispersing agent according to claim 1, which is characterized in that the quality of the sodium metaperiodate point
Number is 15%.
3. a kind of coal water slurry dispersing agent according to claim 1, which is characterized in that the raw material is in parts by weight also
Including 15~20 parts of dried objects.
4. a kind of coal water slurry dispersing agent according to claim 3, which is characterized in that the dried object is by following steps
Preparation: after 15~20g fumaric acid and 100~200mL water are mixed, adding 6~8g itaconic acid and 0.1~0.3g peroxidating
Lauroyl is spray-dried after being stirred to react 3~4h.
5. a kind of coal water slurry dispersing agent according to claim 4, which is characterized in that the temperature of the reaction is 80~90
℃。
6. a kind of preparation method of coal water slurry dispersing agent, which is characterized in that specific preparation step are as follows: 40~50 parts of modifications are wooden
Plain concentrate, 1~3 part of citric acid, 3~5 parts of dicyclohexyl ammonium nilrites, 0.3~0.5 part of dodecyl dimethyl Benzylphosphonium Bromide
Ammonium and 80~100 parts of water are added in blender, charge after being stirred 5~10min, coal water slurry dispersing agent can be obtained.
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