CN109988318A - A kind of preparation method of lignin-base fuel thickener - Google Patents
A kind of preparation method of lignin-base fuel thickener Download PDFInfo
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- CN109988318A CN109988318A CN201910235981.0A CN201910235981A CN109988318A CN 109988318 A CN109988318 A CN 109988318A CN 201910235981 A CN201910235981 A CN 201910235981A CN 109988318 A CN109988318 A CN 109988318A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08H—DERIVATIVES OF NATURAL MACROMOLECULAR COMPOUNDS
- C08H6/00—Macromolecular compounds derived from lignin, e.g. tannins, humic acids
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K3/00—Materials not provided for elsewhere
- C09K3/32—Materials not provided for elsewhere for absorbing liquids to remove pollution, e.g. oil, gasoline, fat
Abstract
The invention belongs to oil spilling process fields, and in particular to a kind of preparation method of lignin-base fuel thickener.The present invention is first using black liquid as raw material, aeration obtains lignin after boiler flue gas disposal, then carboxymethyl-modification is carried out to lignin with monoxone under alkaline condition, carboxymethyl lignin ester is synthesized in the method for low temperature esterification in alkaline aqueous solution again, basic salt precipitating finally is carried out by raw material of aluminum sulfate, finally obtained lignin-base fuel thickener, lignin is using trade waste as raw material, raw material sources are simple, low in cost.The present invention is using aluminium ion as precipitating reagent, since aluminium ion is trivalent ion, he can make in the fuel thickener to be formed with more active groups, it is capable of forming more hydrogen bonds, the ion core of formation is larger and stable structure, so that factice group is more stable, improve the solidifying oiliness energy of fuel thickener, and solidifying oil clot intensity improves, and is easy to salvage, have broad application prospects.
Description
Technical field
The invention belongs to oil spilling process fields, and in particular to a kind of preparation method of lignin-base fuel thickener.
Background technique
Over a little years, marine oil spill contamination accident frequently occurs, and CNOOC Bohai Sea Gulf oil accident in 2011 causes Peng Lai
The oil field 19-3 periphery and its about 6200 square kilometres of northwestward area of sea area seawater pollution wherein 870 square kilometres of seawater by
It is serious to pollute, more than 53 times of background value when petroleum-type concentration highest in seawater.In addition there are one to occur in Gulf
The oil leak event caused by oil well eruption, in the daily oil leak highest of offshore drilling platform " deep water horizon " bottom oil well of sinking
Up between 3.5 ten thousand barrels to 60,000 barrels.The pollution may cause the littoral 1000 miles of long wetlands in the Gulf of Mexico and seabeach is ruined, fishing
Industry is impaired, fragile species extinction, and the Gulf of Mexico will become a piece of useless sea in the time up to 10 years, caused by economic loss
It will be in terms of hundreds billion of dollars, referred to as " the oil leak disaster of peacetime (whole world) most serious ".Such oil leak event is in recent years
It remains existing despite repeated prohibition, not only cause huge economic loss but also has seriously threatened marine ecology safety, but also its carcinogenic substance passes through
Accumulation is concentrated in marine organisms body, also to the health for having seriously threatened the mankind.Therefore, how greasy dirt is quickly and efficiently removed
Have become major issue urgently to be resolved.It will be apparent that we, which can control it is necessary to finding one kind, Oil spills and can recycle
Utilize the substance of petroleum.
Currently, can directly be salvaged for high condensation oil slick, and it is unsatisfactory to the processing of low coagulation oil slick.Traditional mode
(detergent, oil suction sponge, dispersing agent, Enrichment by Microorganisms oxidation, burning) environmentally friendly, effective can not all be handled, and detergent processing is floating
Oily mode makes the chemical oil for sinking to seabed continue to pollute subsea environment, palliative；Oil suction sponge rather has light-end products
Effect, but it is helpless to heavy oil；Using means such as dispersing agent, microorganism eutrophication and burnings not only to marine eco-environment band
Come secondary destruction or pollution, and wastes energy oil product increasingly in short supply.Therefore, it is next high further to develop new material, new technology
Effect pollution-free cleaning simultaneously recycles water surface low coagulation oil such as gasoline, diesel oil, crude oil, marine diesel oil, sump oil etc. and is not easy directly to salvage sea
Upper oil slick has been extremely urgent.
Fuel thickener is that can promptly be gelled marine oil overflow and being allowed to of one kind to form solid-state or semisolid bulk, floats on water
The substance in face prevents the further diffusion of oil spilling, is easily recycled, seldom cause secondary pollution, therefore is very promising
Oil-spill chemical.
The research of domestic fuel thickener is started late, and is substantially started from the 1980s, and to the existing fuel thickener of foreign countries
Synthesis technology, application method improvement and to have preparation thinking further investigation expand two in terms of achieve it is certain at
Fruit, the former mainly includes modified glucitols, amino acids, carboxylic acid esters fuel thickener etc.；The latter's such as modified soy-bean protein class,
Starch, modification of chitosan class etc., how each domestic commercially available fuel thickener is at present has more defect by oneself, puts into practical application to it and makes
At considerable restraint, wherein fuel thickener low efficiency, solidifying oleogel is difficult to recycle is especially prominent disadvantage, and need most solution
Problem.Therefore, it is very necessary to prepare new and effective environmental-friendly fuel thickener.
The raw material of fuel thickener have polyvinyl alcohol, sorbierite and leather fiber etc., but be not applied in practice,
At present still in the experimental stage.At present using more fuel thickener because of production technology complexity, dosage is big, high expensive, and price is high
It is expensive, it is unfavorable for promoting, coagulating oiliness can be lower, secondary pollution can be generated after use, and be difficult to be applied in practice.In future
The main direction of studying of fuel thickener is to develop solidifying speed oil, low pollution, hypotoxicity, low dosage, be easily recycled, not vulnerable to ring around
The novel fuel thickener that border influences.
Summary of the invention
Present invention mainly solves the technical issues of, for the fuel thickener of common biomaterial preparation at present, cost of material
Higher, coagulating oiliness can be lower, coagulates that oil clot intensity is not high, is not easy to the defect salvaged, provides a kind of lignin-base fuel thickener
Preparation method.
In order to solve the above-mentioned technical problem, the technical scheme adopted by the invention is that:
The specific preparation step of lignin-base fuel thickener are as follows:
(1) mixed liquor is obtained after mixing desciccate and water and is packed into beaker, is 0.5mol/L sodium hydroxide solution with concentration
PH of mixed is adjusted to 7~9, then mass fraction is added into beaker and is 50% acyl chlorides acetone soln, and beaker is moved into refrigerator
In, it is separated by filtration to obtain filter cake after 2~3h is stirred to react at 0~5 DEG C；
(2) after mixing the sodium hydroxide solution that filter cake obtained above and mass fraction are 45%, 50~60 are heated to
DEG C, after being stirred 15~20min, the aluminum sulfate solution that mass fraction is 30% is added, is stirred to react filtering point after 1~2h
From obtain reaction filter residue, put in a vacuum drying oven dry 20~for 24 hours to get lignin-base fuel thickener；
The preparation step of desciccate are as follows:
(1) by lignin and mass fraction be 45% sodium hydroxide solution and mass fraction be 60% ethanol solution mix after
It is packed into beaker, beaker is moved into water-bath, 30~40 DEG C is heated to, is stirred to react 50~60min；
(2) after to above-mentioned be stirred to react, monoxone is added into beaker, is heated to 40~45 DEG C, then quality is added dropwise
The sodium hydroxide solution that score is 45% adjusts pH to 8~10, increases temperature again to 60~70 DEG C after reacting 40~50min, after
It is freeze-dried after 50~60min of continuous reaction, obtains desciccate；
The preparation step of lignin are as follows:
(1) it collects discarded paper-making black liquid and filter residue is removed by strainer filtering, removal of impurities black liquid is obtained, by the papermaking that cleans
Black liquor pours into autoclave, and the boiler flue being humidified through dedusting is passed through into autoclave, is acidified black liquor；
(2) after to above-mentioned acidification reaction, the pressure reducing valve of autoclave is opened, it will be through boiler flue treated black liquor
It moves into bottom and is aerated with aeration valve in the aeration tank of aerator, is opened, obtain lignin in aeration tank surface collection.
In the specific preparation step (1) of lignin-base fuel thickener, the mass ratio of desciccate and water is 1:10, mass fraction
Additional amount for 50% acyl chlorides acetone soln is the 70~80% of mixeding liquid volume.
In the specific preparation step (2) of lignin-base fuel thickener, sodium hydroxide solution that filter cake and mass fraction are 45%
Mass ratio is 1:5, and the additional amount for the aluminum sulfate solution that mass fraction is 30% is the 60~70% of filter cake quality.
In the preparation step (1) of desciccate, sodium hydroxide solution and quality point that lignin and mass fraction are 45%
Number is 1:5:5 for the mass ratio of 60% ethanol solution.
In the preparation step (2) of desciccate, chloroacetic additional amount is the 50~60% of lignin quality.
In the preparation step (1) of lignin, the boiler flue being humidified through dedusting, intake are passed through into autoclave
Control is until pressure reaches 180~190kPa in autoclave, and pressure is kept to react 12~18h.
In the preparation step (2) of lignin, it is air that when aeration, which is passed through,.
The method have the benefit that:
The present invention is first using black liquid as raw material, and aeration obtains lignin after boiler flue gas disposal, then in alkaline item
Carboxymethyl-modification is carried out to lignin with monoxone under part, then synthesizes carboxylic first in alkaline aqueous solution in the method for low temperature esterification
Sill quality ester finally carries out basic salt precipitating by raw material of aluminum sulfate, finally obtained lignin-base fuel thickener, and the present invention is first
Using black liquid as raw material, it is with work since the present invention prepares lignin that aeration, which obtains lignin, after boiler flue gas disposal
Industry waste is raw material, and raw material sources are simple, low in cost, therefore the preparation cost of fuel thickener of the present invention is also saved,
Then the present invention carries out carboxymethyl-modification to lignin using monoxone under alkaline condition, and main purpose is toward lignin
Carboxymethyl is introduced on molecule, so that hydrogen atom on lignin be made to be substituted, is conducive to the introducing of next step lipophilic group, is reduced it
Water solubility, then the present invention synthesizes carboxymethyl lignin ester under alkaline aqueous solution, contains in the carboxymethyl lignin ester of synthesis
Ester group, ester group be it is oil-soluble, its presence makes carboxymethyl lignin ester have part lipophilic, so as to form oily packet
Water type emulsion, and due to containing hydrophilic radical in carboxymethyl lignin ester, it is that the emulsion to be formed forms oil therewith being gelled
Gel, the last present invention is using aluminium ion as precipitating reagent, and since aluminium ion is trivalent ion, it can make the fuel thickener to be formed
In have more active groups, be capable of forming more hydrogen bonds, the ion core of formation is larger and stable structure, so that oily
Micelle is more stable, improves the solidifying oiliness energy of fuel thickener, and solidifying oil clot intensity improves, and is easy to salvage, and has wide answer
Use prospect.
Specific embodiment
It collects discarded paper-making black liquid and filter residue is removed by strainer filtering, obtain removal of impurities black liquid, removal of impurities is made
Paper black liquor pours into autoclave, and the boiler flue being humidified through dedusting is passed through into autoclave, until reaction under high pressure
Pressure reaches 180~190kPa in kettle, is acidified black liquor after keeping pressure to react 12~18h；After to above-mentioned acidification reaction,
The pressure reducing valve for opening autoclave will move into the aeration tank that bottom has aerator through boiler flue treated black liquor
In, it opens aeration valve and is aerated, obtain lignin in aeration tank surface collection；By lignin obtained above and mass fraction
The ethanol solution that sodium hydroxide solution and mass fraction for 45% are 60% is to be packed into beaker after 1:5:5 is mixed in mass ratio,
Beaker is moved into water-bath, 30~40 DEG C is heated to, is stirred to react 50~60min；After to above-mentioned be stirred to react,
The monoxone of lignin quality 50~60% is added into beaker, is heated to 40~45 DEG C, then it is 45% that mass fraction, which is added dropwise,
Sodium hydroxide solution adjust pH to 8~10, increase temperature again to 60~70 DEG C after reacting 40~50min, the reaction was continued 50
It is freeze-dried after~60min, obtains desciccate；It is in mass ratio to be mixed after 1:10 is mixed by above-mentioned desciccate and water
Liquid is simultaneously packed into beaker, with concentration is that 0.5mol/L sodium hydroxide solution adjusts pH of mixed to 7~9, then is added into beaker mixed
The acyl chlorides acetone soln that the mass fraction of liquid product 70~80% is 50% is closed, and beaker is moved into refrigerator, is stirred at 0~5 DEG C
It is separated by filtration to obtain filter cake after mixing 2~3h of reaction；The sodium hydroxide solution that filter cake obtained above and mass fraction are 45% is pressed
Mass ratio be 1:5 mixing after, be heated to 50~60 DEG C, after being stirred 15~20min, add filter cake quality 60~
The aluminum sulfate solution that 70% mass fraction is 30% is separated by filtration to obtain reaction filter residue, is placed on vacuum degree after being stirred to react 1~2h
For 68~82kPa, dry 20 in the vacuum oven that temperature is 20~30 DEG C~for 24 hours to get lignin-base fuel thickener.
The preparation of lignin: collecting discarded paper-making black liquid by strainer filtering and remove filter residue, obtains removal of impurities papermaking
Removal of impurities black liquid is poured into autoclave, the boiler flue being humidified through dedusting is passed through into autoclave by black liquor,
Until pressure reaches 180kPa in autoclave, it is acidified black liquor after keeping pressure reaction 12h；To the end of above-mentioned acidification reaction
Afterwards, the pressure reducing valve for opening autoclave will move into the exposure that bottom has aerator through boiler flue treated black liquor
In gas tank, opens aeration valve and be aerated, obtain lignin in aeration tank surface collection.
The preparation of desciccate: sodium hydroxide solution and matter by lignin obtained above and mass fraction for 45%
The ethanol solution that amount score is 60% is to be packed into beaker after 1:5:5 is mixed in mass ratio, beaker is moved into water-bath, heating rises
Temperature is stirred to react 50min to 30 DEG C；After to above-mentioned be stirred to react, the chloroethene of lignin quality 50% is added into beaker
Acid is heated to 40 DEG C, then is added dropwise after sodium hydroxide solution the adjusting pH to 8, reaction 40min that mass fraction is 45% again
Temperature is increased to 60 DEG C, is freeze-dried after the reaction was continued 50min, obtains desciccate.
The preparation of filter cake: being to obtain mixed liquor after 1:10 is mixed and be packed into burning by above-mentioned desciccate and water in mass ratio
Cup is that 0.5mol/L sodium hydroxide solution adjusts pH of mixed to 7, then the addition mixeding liquid volume 70% into beaker with concentration
The acyl chlorides acetone soln that mass fraction is 50%, and beaker is moved into refrigerator, it is separated by filtration after 2h is stirred to react at 0 DEG C
To filter cake.
The preparation of lignin-base fuel thickener: the sodium hydroxide solution that filter cake obtained above and mass fraction are 45% is pressed
Mass ratio is after 1:5 is mixed, to be heated to 50 DEG C, after being stirred 15min, add the mass fraction of filter cake quality 60%
For 30% aluminum sulfate solution, it is separated by filtration to obtain reaction filter residue after being stirred to react 1h, being placed on vacuum degree is 68kPa, temperature 20
DEG C vacuum oven in dry 20h to get lignin-base fuel thickener.
The preparation of lignin: collecting discarded paper-making black liquid by strainer filtering and remove filter residue, obtains removal of impurities papermaking
Removal of impurities black liquid is poured into autoclave, the boiler flue being humidified through dedusting is passed through into autoclave by black liquor,
Until pressure reaches 185kPa in autoclave, it is acidified black liquor after keeping pressure reaction 15h；To the end of above-mentioned acidification reaction
Afterwards, the pressure reducing valve for opening autoclave will move into the exposure that bottom has aerator through boiler flue treated black liquor
In gas tank, opens aeration valve and be aerated, obtain lignin in aeration tank surface collection.
The preparation of desciccate: sodium hydroxide solution and matter by lignin obtained above and mass fraction for 45%
The ethanol solution that amount score is 60% is to be packed into beaker after 1:5:5 is mixed in mass ratio, beaker is moved into water-bath, heating rises
Temperature is stirred to react 55min to 35 DEG C；After to above-mentioned be stirred to react, the chloroethene of lignin quality 55% is added into beaker
Acid is heated to 42 DEG C, then is added dropwise after sodium hydroxide solution the adjusting pH to 9, reaction 45min that mass fraction is 45% again
Temperature is increased to 65 DEG C, is freeze-dried after the reaction was continued 55min, obtains desciccate.
The preparation of filter cake: being to obtain mixed liquor after 1:10 is mixed and be packed into burning by above-mentioned desciccate and water in mass ratio
Cup is that 0.5mol/L sodium hydroxide solution adjusts pH of mixed to 8, then the addition mixeding liquid volume 75% into beaker with concentration
The acyl chlorides acetone soln that mass fraction is 50%, and beaker is moved into refrigerator, it is separated by filtration after 2h is stirred to react at 2 DEG C
To filter cake.
The preparation of lignin-base fuel thickener: the sodium hydroxide solution that filter cake obtained above and mass fraction are 45% is pressed
Mass ratio is after 1:5 is mixed, to be heated to 55 DEG C, after being stirred 17min, add the mass fraction of filter cake quality 65%
For 30% aluminum sulfate solution, it is separated by filtration to obtain reaction filter residue after being stirred to react 1h, being placed on vacuum degree is 70kPa, temperature 25
DEG C vacuum oven in dry 22h to get lignin-base fuel thickener.
The preparation of lignin: collecting discarded paper-making black liquid by strainer filtering and remove filter residue, obtains removal of impurities papermaking
Removal of impurities black liquid is poured into autoclave, the boiler flue being humidified through dedusting is passed through into autoclave by black liquor,
Until pressure reaches 190kPa in autoclave, it is acidified black liquor after keeping pressure reaction 18h；To the end of above-mentioned acidification reaction
Afterwards, the pressure reducing valve for opening autoclave will move into the exposure that bottom has aerator through boiler flue treated black liquor
In gas tank, opens aeration valve and be aerated, obtain lignin in aeration tank surface collection.
The preparation of desciccate: sodium hydroxide solution and matter by lignin obtained above and mass fraction for 45%
The ethanol solution that amount score is 60% is to be packed into beaker after 1:5:5 is mixed in mass ratio, beaker is moved into water-bath, heating rises
Temperature is stirred to react 60min to 40 DEG C；After to above-mentioned be stirred to react, the chloroethene of lignin quality 60% is added into beaker
Acid is heated to 45 DEG C, then is added dropwise after sodium hydroxide solution the adjusting pH to 10, reaction 50min that mass fraction is 45% again
Temperature is increased to 70 DEG C, is freeze-dried after the reaction was continued 60min, obtains desciccate.
The preparation of filter cake: being to obtain mixed liquor after 1:10 is mixed and be packed into burning by above-mentioned desciccate and water in mass ratio
Cup is that 0.5mol/L sodium hydroxide solution adjusts pH of mixed to 9, then the addition mixeding liquid volume 80% into beaker with concentration
The acyl chlorides acetone soln that mass fraction is 50%, and beaker is moved into refrigerator, it is separated by filtration after being stirred to react 3h at 5 DEG C
To filter cake.
The preparation of lignin-base fuel thickener: the sodium hydroxide solution that filter cake obtained above and mass fraction are 45% is pressed
Mass ratio is after 1:5 is mixed, to be heated to 60 DEG C, after being stirred 20min, add the mass fraction of filter cake quality 70%
For 30% aluminum sulfate solution, it is separated by filtration to obtain reaction filter residue after being stirred to react 2h, being placed on vacuum degree is 82kPa, temperature 30
DEG C vacuum oven in dry for 24 hours to get lignin-base fuel thickener.
Comparative example 1: the fuel thickener of Harbin, Heilongjiang Province company production.
Fuel thickener in lignin-base fuel thickener produced by the present invention and comparative example is detected, testing result such as table 1
It is shown.
Solidifying oil cut rate test is measured according to standard HJ637-2012.
Viscosity test takes the fuel thickener in fuel thickener produced by the present invention and comparative example to be added separately to the 10g/L's containing crude oil
In the container of seawater, gel viscosity of the dosage in 15%, time 1h, after detecting solidifying oil.
1 performance measurement result of table
| Test item | Embodiment 1 | Embodiment 2 | Embodiment 3 | Comparative example 1 |
| Viscosity (Pas) | 240 | 241 | 245 | 233 |
| Oily set strength (MPa) | 201.6 | 218.7 | 232.5 | 122.5 |
| The solidifying situation of oil | Water body is limpid to be picked up | Water body is limpid to be picked up | Water body is limpid to be picked up | Water body is muddy |
| Solidifying oil cut rate (%) | 85% | 87% | 88% | 71% |
From the data in table 1, it can be seen that lignin-base fuel thickener performance produced by the present invention is excellent, preparation method is relatively simple, due to this hair
The bright lignin for preparing is using trade waste as raw material, and raw material sources are simple, low in cost, and oil it is solidifying situation is good, intensity is high,
Facilitate salvaging, develops aspect enterprise to oil spilling and bring fabulous economic benefit, have a extensive future.
Claims (7)
1. a kind of preparation method of lignin-base fuel thickener, it is characterised in that specific preparation step are as follows:
(1) mixed liquor is obtained after mixing desciccate and water and is packed into beaker, is 0.5mol/L sodium hydroxide solution with concentration
PH of mixed is adjusted to 7~9, then mass fraction is added into beaker and is 50% acyl chlorides acetone soln, and beaker is moved into refrigerator
In, it is separated by filtration to obtain filter cake after 2~3h is stirred to react at 0~5 DEG C；
(2) after mixing the sodium hydroxide solution that filter cake obtained above and mass fraction are 45%, 50~60 are heated to
DEG C, after being stirred 15~20min, the aluminum sulfate solution that mass fraction is 30% is added, is stirred to react filtering point after 1~2h
From obtain reaction filter residue, put in a vacuum drying oven dry 20~for 24 hours to get lignin-base fuel thickener；
The preparation step of the desciccate are as follows:
(1) by lignin and mass fraction be 45% sodium hydroxide solution and mass fraction be 60% ethanol solution mix after
It is packed into beaker, beaker is moved into water-bath, 30~40 DEG C is heated to, is stirred to react 50~60min；
(2) after to above-mentioned be stirred to react, monoxone is added into beaker, is heated to 40~45 DEG C, then quality is added dropwise
The sodium hydroxide solution that score is 45% adjusts pH to 8~10, increases temperature again to 60~70 DEG C after reacting 40~50min, after
It is freeze-dried after 50~60min of continuous reaction, obtains desciccate；
The preparation step of the lignin are as follows:
(1) it collects discarded paper-making black liquid and filter residue is removed by strainer filtering, removal of impurities black liquid is obtained, by the papermaking that cleans
Black liquor pours into autoclave, and the boiler flue being humidified through dedusting is passed through into autoclave, is acidified black liquor；
(2) after to above-mentioned acidification reaction, the pressure reducing valve of autoclave is opened, it will be through boiler flue treated black liquor
It moves into bottom and is aerated with aeration valve in the aeration tank of aerator, is opened, obtain lignin in aeration tank surface collection.
2. a kind of preparation method of lignin-base fuel thickener according to claim 1, it is characterised in that: the lignin
In the specific preparation step (1) of base fuel thickener, the mass ratio of desciccate and water is 1:10, the acyl chlorides third that mass fraction is 50%
The additional amount of ketone solution is the 70~80% of mixeding liquid volume.
3. a kind of preparation method of lignin-base fuel thickener according to claim 1, it is characterised in that: the lignin
In the specific preparation step (2) of base fuel thickener, the mass ratio for the sodium hydroxide solution that filter cake and mass fraction are 45% is 1:5, matter
The additional amount for measuring the aluminum sulfate solution that score is 30% is the 60~70% of filter cake quality.
4. a kind of preparation method of lignin-base fuel thickener according to claim 1, it is characterised in that: the desciccate
Preparation step (1) in, the ethyl alcohol that the sodium hydroxide solution and mass fraction that lignin and mass fraction are 45% are 60% is molten
The mass ratio of liquid is 1:5:5.
5. a kind of preparation method of lignin-base fuel thickener according to claim 1, it is characterised in that: the desciccate
Preparation step (2) in, chloroacetic additional amount be lignin quality 50~60%.
6. a kind of preparation method of lignin-base fuel thickener according to claim 1, it is characterised in that: the lignin
In preparation step (1), the boiler flue being humidified through dedusting is passed through into autoclave, intake control is until high pressure is anti-
It answers pressure in kettle to reach 180~190kPa, and pressure is kept to react 12~18h.
7. a kind of preparation method of lignin-base fuel thickener according to claim 1, it is characterised in that: the lignin
In preparation step (2), it is air that when aeration, which is passed through,.
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| CN110818837A (en) * | 2019-08-19 | 2020-02-21 | 南昌大学 | Maleate polymer, waste edible oil coagulant and preparation method thereof |
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