CN101921639A - Method for preparing water-coal-slurry additive taking enzymatic hydrolysis lignin as raw material - Google Patents
Method for preparing water-coal-slurry additive taking enzymatic hydrolysis lignin as raw material Download PDFInfo
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Abstract
The invention provides a method for preparing a water-coal-slurry additive taking enzymatic hydrolysis lignin as a raw material. In the method, the chemical activity of the enzymatic hydrolysis lignin is utilized to directly perform polycondensation with sodium hydrogen sulfite, sodium metabisulfite, acetone and methanal to a prepare enzymatic hydrolysis lignin-sulphonated acetone-methanal condensation polymer (LSAF); the enzymatic hydrolysis lignin-sulphonated acetone-methanal condensation polymer (LSAF) is compatible with other types of surfactants, and is compounded with the surfactants, such as sodium dodecyl benzene sulfonate, PVA, carboxymethyl cellulose sodium and the like to prepare the water coat slurry which has higher stability and lower viscosity; and the liquidity of the water coat slurry is improved. The enzymatic hydrolysis lignin replaces the partial petrochemical raw materials to prepare modified high molecular materials, which not only lowers the cost of high molecular materials, but also can save the consumption of the petrochemical materials, and can generate significant social benefit; and the processing technique for preparing the water-coal-slurry additive taking the enzymatic hydrolysis lignin as a raw material is simple, is easy to implement and has good effect.
Description
Technical field
The invention belongs to field of fine chemical, more specifically relating to a kind of is the method for feedstock production slurries additive agent with the enzymolysis xylogen.
Background technology
Coal water slurry is a kind of novel coal based fluid fuel, is called for short CWS(Coal Water Slurry), the solid-liquid dispersion system that the coal by about 70%, 30% water and a small amount of (accounting for 1%) chemical additive are prepared from belongs to thermodynamic unstable system.Coal water slurry as a kind of novel low pollution for oil fuel, it makes coal dust is a kind of fluid fuel from traditional solid fuel conversion, thereby coal water slurry as oil have can pumping, atomizing, storage and stable ignition incendiary characteristics, have remarkable advantages such as efficiency of combustion height, load easy-regulating, energy-conservation and environmental benefit be good.On the whole, with the clean coal technology of coal water slurry, have reality and long-range meaning for the Chinese coal resources advantage of performance as alternative oil.
China's energy structure is still based on coal, but coal can cause environmental pollution in the development and use process, and therefore, it is imperative to develop clean coal technology, and coal water slurry has demonstrated tangible benefit as a kind of novel fluid fuel.
1, for oily benefit: two tons of coal water slurry can be for one ton of oil.Because coal water slurry is compared under identical calorific value with fuel oil, its price only is about 1/2 of a heavy oil.
2, energy-saving benefit: cool water mixture burning efficient height, pollute few.Coal water slurry can be for coal, burn in different types of stove for gas, generation oil, and efficiency of combustion can reach more than 99%, and according to measuring and calculating, the cost of burning in boiler Sweet natural gas is 2 times of oil firing approximately, is 3 times of coal slurry of heating up water.
3, environmental benefit: through environmental protection tests, the flue dust behind the cool water mixture burning, SO
2, oxynitride discharging all meet discharging standards, have good benefits in environment.
4, comprehensive utilization benefit: COAL-WATER SLURRY TECHNOLOGY can be improved the product structure in colliery, improves the business economic benefit.
At present, the developing direction of external slurries additive agent mainly contains: adopt higher degrees of polymerization naphthalene sulfonation formaldehyde condensation products and organophosphate and organic carboxylate composite; The control molecular weight makes vinylformic acid and acrylate generation copolymerization; Carry out copolymerization and carry out sulfonation with vinylbenzene with toxilic acid, methylene-succinic acid etc.Present stage, the slurries additive agent of excellent performance adopts petroleum products synthetic mostly, and its production cost maintains higher level.If can make full use of the resourceful xylogen of occurring in nature, from the relation between molecular level research lignin structure and the performance, and the functional group of xylogen is carried out modification in conjunction with the different properties of various coals, make it help the dispersion of coal grain; Screening utilizes other auxiliary agents, remedies the deficiency on the xylogen performance, makes it to occur synergistic effect, and this will make xylogen being well worth doing aspect the slurries additive agent of making cheapness and excellent performance, can reach the purpose that turns waste into wealth.
High quality water coal slurry with practical value requires to possess high density, low viscosity, good mobile and stable.Slurries additive agent is an indispensable tensio-active agent in the coal water slurry preparation, is the key of preparation COAL-WATER SLURRY TECHNOLOGY.Because coal/water termination consistency is poor, does not add additive and be difficult to be prepared into stable dispersion and high-concentration coal-water slurry.Slurries additive agent is actually a kind of interface modifier, can improve the coal surface wettability, and it is adsorbed on coal grain surface, improves coal/water termination character greatly, and the coal grain can be dispersed in the water, and it is mobile and stable to improve coal slurry well.
Existing slurries additive agent has following several types: cationic surfactant, aniorfic surfactant and nonionic surface active agent.Cationic surfactant is synthetic by aniorfic surfactant mostly, the cost height; And the electronegativity on coal surface, small cations type tensio-active agent is not enough to improve the coal surface wettability, so and be of little use.The coal water slurry dispersing agent of anionic has:
1. alkene sulfonate series has good visbreaking and stabilization simultaneously to low grey coal water slurry, can take into account the rheological and the stability of coal water slurry simultaneously by controlling its molecular weight, even can remove the adding of other stablizers from, but price is higher.
2. sulfonated lignin series sulfonated lignin are a considerable class in the tensio-active agent with non-petroleum chemicals manufacturing.Its biggest advantage is abundant raw material, low price, and slurrying stability better, and condensate rate is few, only produces soft precipitation, and shortcoming is that slurrying viscosity is bigger, and flow pattern is more coarse, so normal and the composite use of other dispersion agents.But method of double crossing can not change hydrophilic, the lipophilic group and the surfactivity thereof of sulfonated lignin.
3. many characteristics of this type of dispersion agent of humate and sulfonated humic acid salt series are similar with xylogen, but its dispersiveness is better, can use separately, and its main drawback is the poor stability of slurry.
4. all kinds of substituting group poly naphthalene sulfonate series: this type of dispersion agent good dispersity, viscosity reducing effect are good, the slurry flow pattern is good, but the slurry poor stability, bleed produces hard-caked sediment easily, and on the high side.
The coal water slurry dispersing agent of non-ionic type mostly is the different ethylene oxide polymer of the polymerization degree.The common ground of nonionic surface active agent is that they not only can be used as dispersion agent, simultaneously again can the double as stablizer, but be not widely adopted as yet because of it costs an arm and a leg.
Summary of the invention
The purpose of this invention is to provide a kind of is the method for feedstock production slurries additive agent with the enzymolysis xylogen.This method makes coal water slurry become a kind of novel coal-based clean fuel, has the characteristics of spatter property, energy saving and economy, has obtained common attention and has applied.But the performance of coal water slurry is subjected to influence of various factors, and wherein additive is the key factor of coal pulping, and the additive expense is only second to the coal expense in the slurrying cost, the coal water slurry cost is had material impact.It is that the additive expense is too high that coal water slurry is produced the greatest problem that faces at present, and the additive universality is relatively poor.The purpose of this problem is to utilize wide material sources, it is good that cheap enzymolysis xylogen is developed a kind of universality, and the coal water slurry dispersing agent that cost is low had both made full use of renewable resources, can reduce the cost of coal water slurry again, have good economic benefit and social benefit.
A kind of is the method for feedstock production slurries additive agent with the enzymolysis xylogen, be to utilize enzymolysis xylogen, sodium bisulfite, pyrosulphite hydrogen sodium, acetone and formaldehyde to be feedstock production enzymolysis xylogen-sulphonated acetone formaldehyde polycondensates (LSAF), LSAF is mixed with the surfactant compound of Sodium dodecylbenzene sulfonate, polyvinyl alcohol (PVA), tripoly phosphate sodium STPP and sodium cellulose glycolate, and preparation obtains slurries additive agent.
Enzymolysis xylogen is to adopt solvent method directly to extract or extract the natural macromolecular material that obtains from biomass material enzymolysis such as wood chip, bamboo, vegetation stalk prepare the residue of ethanol, functional polysaccharide or bio-natural gas from the biomass material that contains lignin component.
Its concrete steps are:
1) sodium bisulfite of 6-8 part and the deionized water adding of 11-13 part pyrosulphite hydrogen sodium and 135-145 part are equipped with in the four-hole boiling flask of electric mixer, thermometer, dropping funnel and reflux condensing tube, 40-50 ℃ of water bath with thermostatic control heating, stir, make its dissolving;
2) drip 25-35 part acetone then; At 40-55 ℃ of reaction 0.5-1.0h;
3) enzymolysis xylogen of adding 5-8 part, sulfonation process has tangible heat release; Reaction 1.0-1.5h;
4) transferring to pH value with the sodium hydroxide solution of 35-55% is 8.5-10.5, drips 80-100 part content and be 37% formaldehyde, drips the process reaction temperature and is no more than 80 ℃.After dripping the formaldehyde end, about 85-95 ℃, continue reaction 2.5-3.5h, finally obtain the dark red solution that solid content is about 30% enzymolysis xylogen-sulphonated acetone formaldehyde polycondensates;
5) with enzymolysis xylogen-sulphonated acetone formaldehyde polycondensates (LSAF) of 0.6%-1.0%, with total amount be in the tensio-active agents such as Sodium dodecylbenzene sulfonate, polyvinyl alcohol (PVA), tripoly phosphate sodium STPP and sodium cellulose glycolate of 0.5-1.2% one or more mix, composite, make slurries additive agent.
Remarkable advantage of the present invention is:
1. the enzymolysis xylogen that adopts of the present invention is the xylogen that directly extracts or adopt the solvent method separation and Extraction from biomass material with solvent method from biorefinery prepares the residue of bio-natural gas, functional polysaccharide or biological alcohol, leaching process does not pass through operations such as high temperature, high pressure, the chemically reactive that has kept natural lignin preferably, the xylogen purity height that obtains, its ash oontent is less than 3%, the calcium lignin sulphonate or the alkali lignin that obtain well below paper industry.The raw material of solvent-borne type xylogen can utilize the waste residue of agriculture and forestry organic waste material or biomass refining industry, and manufacturing cost is lower, can effectively utilize these wastes again simultaneously, helps environment protection.
2. with the enzymolysis xylogen raw material, synthesis modification enzymolysis xylogen tensio-active agent (LSAF), preparation slurries additive agent.It is wider, cheap and easy to get to utilize LSAF to have raw material sources as slurries additive agent, belongs to utilization of waste material, reduces advantages such as environmental pollution.LSAF is applied to the coal water slurry system as dispersion agent, and LSAF has excellent property, technology is simple, production efficiency height, characteristics such as production cost is low.Compare with the plain sulfonate dispersion agent of conventional wooden, LSAF has introduced sulfonic group, and groups such as aldehyde radical reduce the coal dust surface tension, increase steric effect, have overcome the big shortcoming of slurrying viscosity.
3. the LSAF that makes of the present invention can be compatible with the other types tensio-active agent, in the Sodium dodecylbenzene sulfonate (DBS)-SO3Na is the polar hydrophilic radical, the right is nonpolar hydrophobic grouping, hydrophilic radical aligns, in the coal surface adsorption water molecules, thereby make the coal surface become wetting ability, make between the coal grain and isolate mutually, make the stability of coal water slurry improve.Polyvinyl alcohol (PVA) adds in the coal water slurry, can improve the performance of hydration shell, improves the adhesion between coal grain and water.Tripoly phosphate sodium STPP is a kind of inorganics tensio-active agent, and the energy softening of water makes suspension become solution, improves mobile.Xylo-Mucine can be used as stablizer, thickening material.Add in the coal water slurry system, can improve the stability of coal water slurry.Enzymolysis xylogen tensio-active agent (LSAF) is composite with tensio-active agents such as Sodium dodecylbenzene sulfonate, polyvinyl alcohol (PVA) and sodium cellulose glycolate, preparation solid content nearly 70% coal water slurry has high stability, low viscosity and the flowability of having improved coal water slurry.
Embodiment
Raw material and plant and instrument:
Enzymolysis xylogen is synthetic the raw material of feedstock production slurries additive agent: enzymolysis xylogen (EHL), according to people's such as Cheng Xian Sue patent of invention (separating and extracting method of enzymolysis xylogen, national inventing patent ZL200510099747.8) preparation; Calcium lignin sulphonate: the paper mill, Guangzhou provides; Alkali lignin: Shandong spring woods paper industry group provides; Sodium bisulfite, pyrosulphite hydrogen sodium: analytical pure, Tianjin good fortune chemical reagent in morning factory; Acetone, sodium hydroxide, coal dust: imperial coal company limited is risen in Quanzhou; Analytical pure, Chemical Reagent Co., Ltd., Sinopharm Group.
Key instrument and equipment:
Agitator: JJ-1, Changzhou Guohua Electric Appliance Co., Ltd.; Digital display thermostat water bath: XMT-DA, Yuyao City digital display instrument instruments and meters company limited; Electric heating constant temperature air dry oven: DHG-9036A, the grand experimental installation of last Nereid company limited; Fourier infrared spectrograph: FTIR-8400S, day island proper Tianjin company; Rotational viscosimeter: DV3+, Bookfield company.Ball mill: VFD-F500, mechanical ﹠ electronic equipment corporation, Ltd is opened up in the Hangzhou victory.
Enzymolysis xylogen is feedstock production slurries additive agent preparation technology:
1) sodium bisulfite of 6-8 part and the deionized water adding of 11-13 part pyrosulphite hydrogen sodium and 135-145 part are equipped with in the four-hole boiling flask of electric mixer, thermometer, dropping funnel and reflux condensing tube, 40-50 ℃ of water bath with thermostatic control heating, stir, make its dissolving;
2) drip 25-35 part acetone then; At 40-55 ℃ of reaction 0.5-1.0h;
3) enzymolysis xylogen of adding 5-8 part, sulfonation process has tangible heat release; Reaction 1.0-1.5h;
4) transferring to pH value with the sodium hydroxide solution of 35-55% is 8.5-10.5, drips 80-100 part content and be 37% formaldehyde, drips the process reaction temperature and is no more than 80 ℃.After dripping the formaldehyde end, about 85-95 ℃, continue reaction 2.5-3.5h, finally obtain the dark red solution that solid content is about 30% enzymolysis xylogen-sulphonated acetone formaldehyde polycondensates;
5) with the enzymolysis xylogen-sulphonated acetone formaldehyde polycondensates (LSAF) of 0.6%-1.0% and total amount be in the tensio-active agents such as Sodium dodecylbenzene sulfonate, polyvinyl alcohol (PVA), tripoly phosphate sodium STPP and sodium cellulose glycolate of 0.5-1.2% one or more mix, composite, make slurries additive agent, be used to prepare the coal water slurry of solid content 68-70%.
The preparation of coal dust and coal water slurry:
The preparation of coal dust: the coal dust after will pulverizing is crossed 20 mesh sieves, and in thermostatic drying chamber at 105 ℃ of dry 24h; Then, dried coal dust put into ball mill dry grinding certain hour after, cross 60 mesh sieves, obtain the coal dust of preparation coal water slurry.
The preparation of coal water slurry: take by weighing a certain amount of slurries additive agent (about 1%), add quantitative water (about 30%) it is dissolved fully; Under stirring condition, add quantitative coal dust (about 70%) gradually, stir 20min fast with agitator after, obtain the coal water slurry laboratory sample.
The coal water slurry performance analysis:Viscosity of coal-water slurry adopts rotational viscosimeter to measure, with 64
#Rotor is tested under 100r/min; The flowability of coal water slurry is represented with the range estimation flowability; Water coal slurry stability characterizes with static bleed method; Observe the precipitation situation of coal water slurry with rod drop method.
Embodiment 1:6.50g sodium bisulfite and 11.87g Sodium Pyrosulfite and 137.00g water added be equipped with in the four-hole boiling flask of electric mixer, thermometer, dropping funnel and reflux condensing tube,, stir, make its dissolving 45 ℃ of constant temperature waters heating; Drip 29.00g acetone then, controlled temperature is no more than 50 ℃; Behind 45 ℃ of reaction 0.5h, add the 5.00g enzymolysis xylogen, sulfonation process has tangible heat release; Behind the reaction 1h, the sodium hydroxide solution with 40% transfers to PH=9.0, and dropping 89.00g(solid content is 37%) formaldehyde, temperature is no more than 80 ℃ in the dropping.After dripping the formaldehyde end, about 90 ℃, continue reaction 3h, promptly get the dark red solution that solid content is about 30% enzymolysis xylogen-sulphonated acetone formaldehyde polycondensates (LSAF).Enzymolysis xylogen-the sulphonated acetone formaldehyde polycondensates that obtains with this experiment adds 0.7%, directly is mixed with the coal water slurry of solid content 69.1%, viscosity of coal-water slurry 1472 (mPas), and leaving standstill 24h does not have precipitation; Bleed behind the 72h.Enzymolysis xylogen-the sulphonated acetone formaldehyde polycondensates that obtains with this experiment adds 0.7%, in addition with the composite coal water slurry of making solid content 68.9% of 0.05% Xylo-Mucine, 0.2% Sodium dodecylbenzene sulfonate and 0..1% tripoly phosphate sodium STPP, viscosity in aqueous coal slurries 1182 (mPas), leaving standstill 30 days no bleeds does not have precipitation.
Embodiment 2:5.90g sodium bisulfite and 13.12g Sodium Pyrosulfite and 140.00g water added be equipped with in the four-hole boiling flask of electric mixer, thermometer, dropping funnel and reflux condensing tube,, stir, make its dissolving 50 ℃ of constant temperature waters heating; Drip 30.00g acetone then, controlled temperature is no more than 50 ℃; Behind 45 ℃ of reaction 0.5h, add the 5.00g enzymolysis xylogen, sulfonation process has tangible heat release; Behind the reaction 1h, the sodium hydroxide solution with 40% transfers to PH=9.8, and dropping 90.00g(solid content is 37%) formaldehyde, temperature is no more than 78 ℃ in the dropping.After dripping the formaldehyde end, continue reaction 3h about 90 ℃, solid content promptly is about the dark red solution of 30% enzymolysis xylogen-sulphonated acetone formaldehyde polycondensates (LSAF).Enzymolysis xylogen-the sulphonated acetone formaldehyde polycondensates that obtains with this experiment adds 0.7%, in addition with the composite coal water slurry of making solid content 69.3% of 0.05% Xylo-Mucine, 0.1% Sodium dodecylbenzene sulfonate and 0..1% tripoly phosphate sodium STPP, viscosity in aqueous coal slurries 1260 (mPas), leaving standstill 30 days no bleeds does not have precipitation.
Embodiment 3:8.50g sodium bisulfite and 11.35g Sodium Pyrosulfite and 138.00g water added be equipped with in the four-hole boiling flask of electric mixer, thermometer, dropping funnel and reflux condensing tube,, stir, make its dissolving 45 ℃ of constant temperature waters heating; Drip 30.00g acetone then, controlled temperature is no more than 50 ℃; Behind 45 ℃ of reaction 0.5h, add the 5.50g enzymolysis xylogen, sulfonation process has tangible heat release; Behind the reaction 1h, the sodium hydroxide solution with 40% transfers to PH=9.5, and dropping 90.00g(solid content is 37%) formaldehyde, temperature is no more than 80 ℃ in the dropping.After dripping the formaldehyde end, continue reaction 3h about 90 ℃, solid content promptly is about the dark red solution of 31% enzymolysis xylogen-sulphonated acetone formaldehyde polycondensates (LSAF).Enzymolysis xylogen-the sulphonated acetone formaldehyde polycondensates that obtains with this experiment adds 0.7%, make the coal water slurry of solid content 68.9% in addition with 0.05% Xylo-Mucine, 0.2% Sodium dodecylbenzene sulfonate and 0..1% polyvinyl alcohol composite, viscosity in aqueous coal slurries (mPas), leaving standstill 30 days no bleeds does not have precipitation.
The comparative example 1.:6.50g sodium bisulfite and 11.87g Sodium Pyrosulfite and 137.00g water added be equipped with in the four-hole boiling flask of electric mixer, thermometer, dropping funnel and reflux condensing tube,, stir, make its dissolving 45 ℃ of constant temperature waters heating; Drip 29.00g acetone then, controlled temperature is no more than 50 ℃; Behind 45 ℃ of reaction 0.5h, add the 5.00g enzymolysis xylogen, sulfonation process has tangible heat release; Behind the reaction 1h, the sodium hydroxide solution with 40% transfers to PH=9.0, and dropping 89.00g(solid content is 37%) formaldehyde, temperature is no more than 80 ℃ in the dropping.After dripping the formaldehyde end, about 90 ℃, continue reaction 3h, promptly get the dark red solution that solid content is about 30% enzymolysis xylogen-sulphonated acetone formaldehyde polycondensates (LSAF).The calcium lignin sulphonate that obtains with this experiment-sulphonated acetone formaldehyde polycondensates adds 0.7%, directly is mixed with the coal water slurry of solid content 69.1%, and viscosity of coal-water slurry 782 (mPas) leaves standstill bleed behind the 24h, precipitation.Add calcium lignin sulphonate-sulphonated acetone formaldehyde polycondensates 1.0%, again with the composite coal water slurry of making solid content 70% of 0.05% Xylo-Mucine, 0.2% Sodium dodecylbenzene sulfonate and 0..1% tripoly phosphate sodium STPP, viscosity in aqueous coal slurries 987 (mPas) leaves standstill 72h bleed, precipitation.
The comparative example 2:6.50g sodium bisulfite and 11.87g Sodium Pyrosulfite and 137.00g water added be equipped with in the four-hole boiling flask of electric mixer, thermometer, dropping funnel and reflux condensing tube,, stir, make its dissolving 45 ℃ of constant temperature waters heating; Drip 29.00g acetone then, controlled temperature is no more than 50 ℃; Behind 45 ℃ of reaction 0.5h, add the 5.00g alkali lignin, sulfonation process has tangible heat release; Behind the reaction 1h, the sodium hydroxide solution with 40% transfers to PH=9-10, and dropping 89.00g(solid content is 37%) formaldehyde, temperature is no more than 80 ℃ in the dropping.After dripping the formaldehyde end, continue reaction 3h about 90 ℃, solid content promptly is about the dark red solution of 30% alkali lignin-sulphonated acetone formaldehyde polycondensates.Enzymolysis xylogen-the sulphonated acetone formaldehyde polycondensates that obtains with this experiment adds 0.7%, in addition with the composite coal water slurry of making solid content 70% of 0.05% Xylo-Mucine, 0.2% Sodium dodecylbenzene sulfonate and 0..1% tripoly phosphate sodium STPP, viscosity in aqueous coal slurries 1457 (mPas), leave standstill 3 days no bleeds and do not have precipitation, left standstill 7 days, and a small amount of soft precipitation occurred.
The foregoing description and comparative example result show, enzymolysis xylogen is different with calcium lignin sulphonate, alkali lignin that traditional paper industry obtains, can directly synthesize enzymolysis xylogen or derivatives thereof-sulfonated acetone-formaldehyde condensation polymer product (LSAF), existing hydrophilic radical-SO in the molecule of LSAF
3Na, Ar-OH and hydrophobic group: aryl radical.This structure of LSAF can increase steric effect by reducing the coal dust surface tension, makes the coal grain be suspended in the water.Its concrete acting body is present:
1. hydrophobic grouping combines with the coal dust surface, and hydrophilic radical-SO
3Na, Ar-OH etc. align, and water molecules is adsorbed on the surface of coal, thereby make the wetting ability on coal surface strengthen, and the coal grain is spaced from each other, and reduce mutual resistance, reach the purpose that reduces viscosity.
Among the LSAF-SO
3H ,-CHO group has stronger electron-withdrawing power, easily and coal grain surface nitrogenous, contain formation hydrogen bonds such as oxygen polar functional group, make LSAF strengthen, improve the wetting ability on coal grain surface in the adsorption on coal grain surface by hydrogen bond, reduce viscosity of coal-water slurry, help improving its stability.
3. the molecular weight of LSAF is bigger, and long hydrophilic chain is arranged, and can form stronger spatial separation steric hindrance, reduces viscosity, improves the stability that the coal grain suspends.
4. enzymolysis xylogen-sulphonated acetone formaldehyde polycondensates (LSAF) can be compatible with the other types tensio-active agent, composite by with tensio-active agents such as Sodium dodecylbenzene sulfonate, PVA and sodium cellulose glycolates, the coal water slurry of preparation has higher stability, than low viscosity, improved the flowability of coal water slurry.
Claims (5)
1. one kind is the method for feedstock production slurries additive agent with the enzymolysis xylogen, it is characterized in that this method utilizes enzymolysis xylogen, sodium bisulfite, pyrosulphite hydrogen sodium, acetone and formaldehyde to be feedstock production enzymolysis xylogen-sulphonated acetone formaldehyde polycondensates (LSAF), LSAF is mixed with Sodium dodecylbenzene sulfonate, polyvinyl alcohol (PVA), tripoly phosphate sodium STPP and sodium cellulose glycolate surfactant compound, and preparation obtains slurries additive agent.
2. enzymolysis xylogen according to claim 1 is the method for feedstock production slurries additive agent, it is characterized in that: described enzymolysis xylogen is to adopt solvent method directly to extract or extract the natural macromolecular material that obtains from wood chip, bamboo, vegetation straw biomass raw material enzymolysis prepare the residue of ethanol, functional polysaccharide or bio-natural gas from the biomass material that contains lignin component.
3. enzymolysis xylogen according to claim 1 is the method for feedstock production slurries additive agent, it is characterized in that: this method utilizes enzymolysis xylogen, sodium bisulfite, pyrosulphite hydrogen sodium, acetone and formaldehyde to be raw material process condensation polymerization prepared in reaction enzymolysis xylogen-sulphonated acetone formaldehyde polycondensates (LSAF).
4. enzymolysis xylogen according to claim 1 is the method for feedstock production slurries additive agent, it is characterized in that: enzymolysis xylogen-sulphonated acetone formaldehyde polycondensates (LSAF) mix with in Sodium dodecylbenzene sulfonate, polyvinyl alcohol (PVA), tripoly phosphate sodium STPP and the sodium cellulose glycolate tensio-active agent one or more, composite, make slurries additive agent.
5. a claim 1,2,3 described enzymolysis xylogens are the method for feedstock production slurries additive agent, and preparation method's concrete steps are:
1) sodium bisulfite of 6-8 part and the deionized water adding of 11-13 part pyrosulphite hydrogen sodium and 135-145 part are equipped with in the four-hole boiling flask of electric mixer, thermometer, dropping funnel and reflux condensing tube, 40-50 ℃ of water bath with thermostatic control heating, stir, make its dissolving;
2) drip 25-35 part acetone then; At 40-55 ℃ of reaction 0.5-1.0h;
3) enzymolysis xylogen of adding 5-8 part, sulfonation process has tangible heat release; Reaction 1.0-1.5h;
4) transferring to pH value with the sodium hydroxide solution of 35-55% is 8.5-10.5, drips 80-100 part content and be 37% formaldehyde, drips the process reaction temperature and is no more than 80 ℃; After dripping the formaldehyde end, continue reaction 2.5-3.5h, finally obtain the dark red solution that solid content is 30% enzymolysis xylogen-sulphonated acetone formaldehyde polycondensates at 85-95 ℃;
5) with enzymolysis xylogen-sulphonated acetone formaldehyde polycondensates (LSAF) of 0.6%-1.0%, mix with in the tensio-active agents such as the Sodium dodecylbenzene sulfonate that accounts for coal water slurry gross weight 0.5-1.2%, polyvinyl alcohol (PVA), tripoly phosphate sodium STPP and sodium cellulose glycolate one or more, composite, make slurries additive agent.
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| CN115181595B (en) * | 2022-07-14 | 2023-10-20 | 中国科学院宁波材料技术与工程研究所 | Phenol oil modified coal water slurry dispersing agent and preparation method and application thereof |
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