CN106674452B - Crude oil demulsifier and preparation method thereof - Google Patents
Crude oil demulsifier and preparation method thereof Download PDFInfo
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- CN106674452B CN106674452B CN201710041384.5A CN201710041384A CN106674452B CN 106674452 B CN106674452 B CN 106674452B CN 201710041384 A CN201710041384 A CN 201710041384A CN 106674452 B CN106674452 B CN 106674452B
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F299/00—Macromolecular compounds obtained by interreacting polymers involving only carbon-to-carbon unsaturated bond reactions, in the absence of non-macromolecular monomers
- C08F299/02—Macromolecular compounds obtained by interreacting polymers involving only carbon-to-carbon unsaturated bond reactions, in the absence of non-macromolecular monomers from unsaturated polycondensates
- C08F299/022—Macromolecular compounds obtained by interreacting polymers involving only carbon-to-carbon unsaturated bond reactions, in the absence of non-macromolecular monomers from unsaturated polycondensates from polycondensates with side or terminal unsaturations
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G65/00—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule
- C08G65/02—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring
- C08G65/26—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring from cyclic ethers and other compounds
- C08G65/2603—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring from cyclic ethers and other compounds the other compounds containing oxygen
- C08G65/2606—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring from cyclic ethers and other compounds the other compounds containing oxygen containing hydroxyl groups
- C08G65/2609—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring from cyclic ethers and other compounds the other compounds containing oxygen containing hydroxyl groups containing aliphatic hydroxyl groups
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G33/00—Dewatering or demulsification of hydrocarbon oils
- C10G33/04—Dewatering or demulsification of hydrocarbon oils with chemical means
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G2300/00—Aspects relating to hydrocarbon processing covered by groups C10G1/00 - C10G99/00
- C10G2300/10—Feedstock materials
- C10G2300/1033—Oil well production fluids
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Abstract
The present invention proposes a kind of crude oil demulsifier and preparation method thereof, belongs to crude oil demulsification dehydration field, and provided demulsifier can have the advantages such as fast, clear, the crude oil wide adaptation range of abjection water quality of dewatering speed.The crude oil demulsifier, using double bond containing unsaturated alcohol as initiator, it carries out anionic ring-opening polymerization by causing propylene oxide and ethylene oxide under the action of catalyst and obtains the polyoxyethylene polyoxypropylene ether of unsaturated alcohol, then be polymerized under the action of initiator by causing.The present invention can be applied to during crude oil demulsification dehydration.
Description
Technical field
The invention belongs to crude oil demulsification dehydration fields more particularly to a kind of crude oil demulsifier and preparation method thereof.
Background technique
Defeated in refining process in the collection of petroleum, the impurity such as water and the inorganic salts being dissolved in the water are present in crude oil, shape
At stable crude oil emulsion, the load of pump, pipeline and storage tank not only will increase, but also pipe-line system, pump and life can be caused
Equipment corrosion and fouling etc. are produced, therefore, otherwise the necessary dewatering and desalting of crude oil before oil refining can not carry out the refining of petroleum and add
Work.
Chemical demulsification is to remove the most convenient of moisture content, most economical and one of most efficient method in crude oil emulsion.From
Report uses FeSO within 19144Solution counts emulsification crude oil demulsification, has more than 100 years history.With oil extraction in oil field technology and
The development of petroleum refining technology, the demulsifier main ingredient being widely used at present is polyether high molecular, i.e. polyoxyethylene polyoxy third
Alkene block copolymer, the synthesis of this analog copolymer belong to high temperature and pressure polymerization, representative be SP169, BP series and
TA1031 etc., feature are that dosage is few, and demulsification is good, but specificity is strong, extensive bad adaptability.
As oil field development enters the extensive use in later period and intensified oil reduction technology, water content in crude oil is risen year by year, domestic
The exploitation of each elephant enters high water-cut stage, along with steam drive, polymer flooding, surfactant flooding and multiple elements design drive etc. are strong
Change the application of oil recovery technique, the presence of oil displacement agent makes the stability of crude oil emulsion become better and better, and breaking emulsion and dewatering difficulty increases, existing
There is demulsifier to be not enough to adapt to the needs of the breaking emulsion and dewatering of current complicated crude oil.And the generally existing demulsification in each oil field at present is warm
The problems such as degree is high, dosage is big, dewatering speed is undesirable.Therefore, it under the premise of keeping crude oil water containing up to standard, reduces as much as possible
Demulsifier dosage improves dewatering speed, improves sewage quality as each oil field urgent problem to be solved.In addition, from environmental angle
It sees, quite a few oil field uses oil-soluble demulsifier at present, and crosslinking agent TDI has severe toxicity, and solvent toluene etc. not only pollutes environment,
And using when there are security risks, therefore study it is a kind of efficiently, to be not required to the demulsifier of crosslinking should be the task of top priority.
In order to solve the above problem, current polyoxyethylene polyoxypropylene block copolymer is modified to become and improves demulsification
The effective means of agent effect.It is wherein taken again on the basis of polyoxyethylene polyoxypropylene block copolymer free-radical polymerized dual
The document report of polymerization is seldom, the documents such as US006120678A, US005100531A, CN101745344B, CN102746470B
In all using acrylic compounds polymerized monomer and polyether block copolymer carry out esterification or graft reaction, then cause polymerization again
Obtain demulsifier.But above-mentioned synthetic method is cumbersome, and contains the excessive propene acid monomers for being unfavorable for crude oil demulsification in product, it is difficult to
The problems such as being separated from product, causing dehydrating effect undesirable.
Therefore, how a kind of crude oil demulsifier is provided, make its be not only not necessarily to crosslinking, it is nontoxic and pollution-free, but also have dehydration
The advantages such as fast, clear, the crude oil wide adaptation range of abjection water quality of speed will be this field urgent problem to be solved.
Summary of the invention
The present invention provides a kind of crude oil demulsifier and preparation method thereof, the demulsifier can without crosslinking, it is nontoxic and pollution-free,
There can be the advantages such as fast, clear, the crude oil wide adaptation range of abjection water quality of dewatering speed.
In order to achieve the above object, the technical solution adopted by the present invention are as follows:
The present invention provides a kind of crude oil demulsifiers, using double bond containing unsaturated alcohol as initiator, under the action of catalyst
It carries out anionic ring-opening polymerization by causing propylene oxide and/or ethylene oxide and obtains the polyoxyethylene polyoxypropylene of unsaturated alcohol
Ether, then be polymerized under the action of initiator by causing, there is formula
(I) general structure:
Wherein, a=0~10 represent carbon number as the enol of C2~C12；It is total to represent block for b=1~300, c=0~200
The number of polyoxyethylene, polyoxypropylene in polymers；X is H or CH3, Y CH3Or H, X ≠ Y, the weight average molecular weight range of product are
2000~500000.
As optimal technical scheme, the unsaturated alcohol be selected from vinyl alcohol, propenyl, butenol, pentenol, hexenol,
Heptenol, matsutake alcohol, nonenol, decenol, undecylenic alcohol or lanolin alcohol and their isomer.
As optimal technical scheme, the initiator is benzoyl peroxide, azodiisobutyronitrile or isopropylbenzene peroxidating
Any one in hydrogen.
The present invention also provides a kind of preparation methods of crude oil demulsifier as described in the above technical scheme, including following step
It is rapid:
The polyoxyethylene poly-oxygen propylene aether, initiator and solvent of unsaturated alcohol are added in reaction vessel, protected in nitrogen
Under shield, crude oil demulsifier is obtained by causing polymerization under conditions of reaction temperature is 80 DEG C -110 DEG C, the reaction time is 3-8h.
As optimal technical scheme, the solvent be benzene,toluene,xylene, mixed benzene, tetrahydrofuran, hexamethylene, heptane,
Any one in cyclohexanone, ethyl acetate, butyl acetate or solvent naphtha.
As optimal technical scheme, the weight percent of the solvent of addition is the polyoxyethylene poly-oxygen propylene aether of unsaturated alcohol
20%-80%, the weight percent of the initiator of addition is the 0.5%- of the polyoxyethylene poly-oxygen propylene aether of unsaturated alcohol
5%.
As optimal technical scheme, the polyoxyethylene poly-oxygen propylene aether of the unsaturated alcohol passes through unsaturated alcohol and epoxy second
Alkane and/or propylene oxide in the presence of a catalyst, reaction temperature be 100 DEG C -140 DEG C, reaction pressure 0.1-0.4MPa
Under conditions of occur anionic ring-opening polymerization form.
As optimal technical scheme, the catalyst is selected from NaOH, KOH, LiOH, Mg (OH)2、Ca(OH)2、Ba(OH)2、
AlCl3、FeCl3、TiCl4、ZrO2Or at least one of sulfuric acid.
Compared with prior art, the advantages and positive effects of the present invention are:
1, crude oil demulsifier provided by the present invention uses unsaturated fatty alcohol for initiator, directly initiation propylene oxide,
Ethylene oxide carries out anionic ring-opening polymerization, after obtaining the polyoxyethylene poly-oxygen propylene aether polymeric monomer of unsaturated alcohol, then is causing
It is obtained under the action of agent by causing polymerization, which is the Dual polymerization type crude oil demulsification that existing long linear has long-chain branch again
Agent has the advantages such as fast, clear, the crude oil wide adaptation range of abjection water quality of dewatering speed；
2, the simple synthetic method of demulsifier provided by the present invention, easy to operate, it is stable reaction, easy to control, it is suitable for work
Industryization processing.
Specific embodiment
The technical scheme in the embodiments of the invention will be clearly and completely described below, it is clear that described implementation
Example is only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, this field is common
Technical staff's every other embodiment obtained without making creative work belongs to the model that the present invention protects
It encloses.
The embodiment of the invention provides a kind of crude oil demulsifiers, using double bond containing unsaturated alcohol as initiator, in catalyst
The lower polyoxypropylene for obtaining unsaturated alcohol by initiation propylene oxide and/or ethylene oxide progress anionic ring-opening polymerization of effect is poly-
Ethylene oxide ether, then be polymerized under the action of initiator by causing, there is formula (I) general structure:
Wherein, a=0~10 represent carbon number as the enol of C2~C12；It is total to represent block for b=1~300, c=0~200
The number of polyoxyethylene, polyoxypropylene in polymers；X is H or CH3, Y CH3Or H, X ≠ Y, the weight average molecular weight range of product are
2000~500000.
In the present embodiment, provided crude oil demulsifier uses unsaturated fatty alcohol for initiator, directly initiation epoxy
Propane, ethylene oxide carry out anionic ring-opening polymerization, after obtaining the polyoxyethylene poly-oxygen propylene aether polymeric monomer of unsaturated alcohol, then
It is obtained under the action of initiator by causing polymerization, the specific structure of obtained crude oil demulsifier is defined,
In, the number of the carbon number and polyoxyethylene or polyoxypropylene in double bond containing unsaturated alcohol is specifically defined, thus by crude oil
The weight average molecular weight of demulsifier controls in 2000~500000 ranges, to obtain the excellent crude oil demulsifier of estimated performance.
In a preferred embodiment, the unsaturated alcohol be selected from vinyl alcohol, propenyl, butenol, pentenol, hexenol,
Heptenol, matsutake alcohol, nonenol, decenol, undecylenic alcohol or lanolin alcohol and their isomer.As preferred
Technical solution, the initiator are any one in benzoyl peroxide, azodiisobutyronitrile or isopropyl benzene hydroperoxide.Upper
It states in embodiment, the range of unsaturated alcohol and initiator is optimized, participated in selection by group/raw material of above-mentioned optimization
The more excellent crude oil demulsifier of availability after reaction.It is understood that those skilled in the art can be according to practical institute
Unsaturated alcohol used in adjustment and initiator need to be reacted.
The preparation method for the crude oil demulsifier that the embodiment of the invention also provides a kind of as described in above-described embodiment, including with
Lower step: the polyoxyethylene poly-oxygen propylene aether, initiator and solvent of unsaturated alcohol are added in reaction vessel, in nitrogen protection
Under, crude oil demulsifier is obtained by causing polymerization under conditions of reaction temperature is 80 DEG C -110 DEG C, the reaction time is 3-8h.
Above mentioned embodiment provide a kind of preparation methods of crude oil demulsifier, wherein the polyoxyethylene polyoxy of unsaturated alcohol
Propylene ether polymeric monomer generates to obtain under the action of solvent, initiator by initiated polymerization, in the above preparation method, is
Avoid influence of the ambiance to reactant, entire reaction inert gas, preferably nitrogen protection under operated, together
When also reaction temperature and reaction time are defined, be suitble to ensuring to react the obtained weight average molecular weight of demulsifier
In the range of.It is understood that different according to the weight average molecular weight of required demulsifier, reaction temperature can also be 85 DEG C, 90
DEG C, 95 DEG C, 100 DEG C, 105 DEG C etc., the reaction time can also be 3.5h, 4h, 4.5h, 5h, 5.5h, 6h, 6.5h, 7h, 7.5h etc.,
Those skilled in the art can be adjusted according to real reaction situation.
In a preferred embodiment, the solvent be benzene,toluene,xylene, mixed benzene, tetrahydrofuran, hexamethylene, heptane,
Any one in cyclohexanone, ethyl acetate, butyl acetate or solvent naphtha.In the present embodiment, to described in above-described embodiment
The selection of solvent be defined, but it is understood that, the present embodiment is not limited to cited solvent, can also be
Those skilled in the art combine and are able to carry out the solvent being replaced mutually known to general knowledge known in this field.
In a preferred embodiment, the weight percent of the solvent of addition is the polyoxyethylene poly-oxygen propylene aether of unsaturated alcohol
20%-80%, the weight percent of the initiator of addition is the 0.5%- of the polyoxyethylene poly-oxygen propylene aether of unsaturated alcohol
5%.In the present embodiment, in order to ensure the abundant, stable of reaction carries out, for the amount of the quantity of solvent and initiator that are added
Also specific restriction has been carried out, wherein the quantity of solvent being added can also be 30%, 40%, 50%, 60%, 70% etc., as long as ensuring
It can sufficiently dissolve, mix each reaction raw materials, meeting reaction must measure, and the amount for the initiator being added can also be
1%, 1.5%, 2%, 2.5%, 3%, 3.5%, 4%, 4.5% etc., as long as can sufficiently initiation reaction carry out.
In a preferred embodiment, the polyoxyethylene poly-oxygen propylene aether of the unsaturated alcohol passes through unsaturated alcohol and epoxy second
Alkane and/or propylene oxide in the presence of a catalyst, reaction temperature be 100 DEG C -140 DEG C, reaction pressure 0.1-0.4MPa
Under conditions of occur anionic ring-opening polymerization form.In a preferred embodiment, the catalyst be selected from NaOH, KOH, LiOH,
Mg(OH)2、Ca(OH)2、Ba(OH)2、AlCl3、FeCl3、TiCl4、ZrO2Or at least one of sulfuric acid.
Above mentioned embodiment provide a kind of preparation methods of the polyoxyethylene poly-oxygen propylene aether of unsaturated alcohol, by above-mentioned anti-
It answers raw material to react under the action of reasonable temperature, pressure and catalyst to obtain.It is understood that in order to which obtain can
The polyoxyethylene poly-oxygen propylene aether for participating in the suitable unsaturated alcohol of reaction needs to carry out its temperature, pressure and catalyst
Reasonably select, wherein temperature can also be 110 DEG C, 120 DEG C, 130 DEG C etc., pressure can also for 0.2MPa, 0.3MPa etc., and
Catalyst then can choose at least one of acid-base property compound in above range, wherein preferable NaOH or KOH.For
For monomer unsaturated alcohol, then can choose vinyl alcohol, propenyl, butenol, pentenol, hexenol, heptenol, matsutake alcohol,
Nonenol, decenol, undecylenic alcohol or lanolin alcohol and their isomer etc., wherein it is preferred that propenyl, butylene
Alcohol, pentenol and hexenol, most preferably propenyl.But it should be recognized that the polyoxy second of unsaturated alcohol provided by the present invention
The preparation method of alkene polyethenoxy ether can be not limited to above-mentioned cited method, can also be other with feasibility
Preparation method.
Crude oil demulsifier and preparation method thereof provided by the embodiment of the present invention is introduced in detail in order to become apparent from, and below will
It is described in conjunction with specific embodiments.
Embodiment 1
The hexenol that 1mol is put into autoclave, is added AlCl3Make catalyst, vacuumizes, N2Purging three times, by
110 DEG C are gradually warming up to, propylene oxide and ethylene oxide are continuously passed through, holding reaction pressure is 0.25MPa, and charging reaction terminates
Afterwards, it vacuumizes and removes reaction clout, acetic acid is added and neutralizes, hexenol polyoxyethylene polyoxypropylene ether can be obtained.
Hexenol polyoxyethylene polyoxypropylene ether is added in reaction vessel, then the vinegar that weight ratio is 80% is added thereto
Acid butyl ester solvent is filled with nitrogen and is protected, and is warming up to 80 DEG C, is slowly added dropwise with the initiator of 3% benzoyl peroxide, gathers
Cool down after closing reaction 8h, obtains demulsifier A.
Embodiment 2
The butenol that 1mol is put into autoclave, is added Ca (OH)2Make catalyst, vacuumizes, N2Purging three times,
140 DEG C are gradually heated to, propylene oxide is continuously passed through, holding reaction pressure is 0.3MPa, and charging after reaction, is vacuumized and removed
Fall and react clout, acetic acid is added and neutralizes, the polyoxyethylene poly-oxygen propylene aether of butenol can be obtained.
Butenol polyoxyethylene poly-oxygen propylene aether is added in reaction vessel, then addition weight ratio is the two of 50% thereto
Toluene solvant is filled with nitrogen and is protected, and is warming up to 90 DEG C, is slowly added dropwise with the initiator of 1% azodiisobutyronitrile, polymerization
Cool down after reaction 4h, obtains demulsifier B.
Embodiment 3
The propenyl that 1mol is put into autoclave is added NaOH and makees catalyst, vacuumizes, N2Purging three times, by
100 DEG C are gradually warming up to, ethylene oxide is continuously passed through, holding reaction pressure is 0.1MPa, and charging after reaction, is vacuumized and removed
Clout is reacted, phosphoric acid is added and neutralizes, the polyoxyethylene poly-oxygen propylene aether of propenyl can be obtained.
Propenyl polyoxyethylene poly-oxygen propylene aether is added in reaction vessel, then the ring that weight ratio is 30% is added thereto
Hexanone solvent is filled with nitrogen and is protected, and is warming up to 100 DEG C, is slowly added dropwise with the initiator of 4% isopropyl benzene hydroperoxide,
Cool down after polymerization reaction 3h, obtains demulsifier C.
Embodiment 4
The nonenol that 1mol is put into autoclave is added KOH and makees catalyst, vacuumizes, N2Purging three times, gradually
120 DEG C are warming up to, propylene oxide and ethylene oxide are continuously passed through, holding reaction pressure is 0.4MPa, and charging after reaction, is taken out
Removed in vacuo reacts clout, and formic acid is added and neutralizes, nonenol polyoxyethylene polyoxypropylene ether can be obtained.
Nonenol polyoxyethylene polyoxypropylene ether is added in reaction vessel, then addition weight ratio is the four of 70% thereto
Hydrogen THF solvent is filled with nitrogen and is protected, and is warming up to 110 DEG C, and the azodiisobutyronitrile initiator with 2% is slowly added dropwise, and gathers
Cool down after closing reaction 5h, obtains demulsifier D.
Performance test
Demulsifier A, B, C, D that embodiment 1-4 is obtained are used in the dehydration test of Bohai Bay Oil crude oil respectively, wherein to
The above-mentioned demulsifier of 0ppm, 50ppm, 100ppm, 200ppm are separately added into Bohai SZ crude oil, using national standard SY/T5281-
2000 bottles of examination method monitoring dehydration situations of change, test result are shown in Table 1.
The effect that the demulsifier of 1 different model of table is dehydrated Bohai Bay Oil crude oil
By 1 result of watch as it can be seen that the feature that the generally existing dewatering speed of such demulsifier is fast, abjection water quality is good.In blank original
In the case that oil is hardly dehydrated, each embodiment takes off within 2 hours under three dosages of 50ppm, 100ppm, 200ppm
Water rate can reach 80% or more, belong to excellent rapid demulsifier.From abjection water water quality and interface conditions in terms of, water quality compared with
Clearly, interface is preferable, can reach the sewage index at scene.
Claims (5)
1. a kind of preparation method of crude oil demulsifier, which comprises the following steps:
The polyoxyethylene poly-oxygen propylene aether, initiator and solvent of unsaturated alcohol are added in reaction vessel, under nitrogen protection,
Crude oil demulsifier is obtained by causing polymerization under conditions of reaction temperature is 80 DEG C -110 DEG C, the reaction time is 3-8h；
Wherein, the unsaturated alcohol is selected from butenol, pentenol or hexenol and their isomer；The solvent
For in benzene,toluene,xylene, mixed benzene, tetrahydrofuran, hexamethylene, heptane, cyclohexanone, ethyl acetate, butyl acetate or solvent naphtha
Any one；The initiator is any one in benzoyl peroxide, azodiisobutyronitrile or isopropyl benzene hydroperoxide.
2. preparation method according to claim 1, which is characterized in that the weight percent of the solvent of addition is unsaturated alcohol
Polyoxyethylene poly-oxygen propylene aether 20%-80%, the weight percent of the initiator of addition is the polyoxyethylene of unsaturated alcohol
The 0.5%-5% of polyethenoxy ether.
3. preparation method according to claim 1 or 2, which is characterized in that the polyoxyethylene polyoxy third of the unsaturated alcohol
Alkene ether passes through unsaturated alcohol and ethylene oxide and/or propylene oxide in the presence of a catalyst, is 100 DEG C -140 in reaction temperature
DEG C, reaction pressure be 0.1-0.4MPa under conditions of occur anionic ring-opening polymerization form.
4. preparation method according to claim 3, which is characterized in that the catalyst is selected from NaOH, Ca (OH)2、Ba
(OH)2、AlCl3、FeCl3、TiCl4、ZrO2Or at least one of sulfuric acid.
5. crude oil demulsifier made from preparation method according to claim 1-4, which is characterized in that contain double bond
Unsaturated alcohol be initiator, carry out anion open loop by causing propylene oxide and/or ethylene oxide under the action of catalyst
Polymerization obtains the polyoxyethylene polyoxypropylene ether of unsaturated alcohol, then is polymerized under the action of initiator by causing, and has
Formula (I) general structure:
Wherein, a=2-4 represents carbon number as the enol of C4~C6；B=1~300, c=0~200 represent in block copolymer and gather
Ethylene oxide, the number of polyoxypropylene；X is H or CH3, Y CH3Or H, X ≠ Y, the weight average molecular weight range of product is 2000~
500000。
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| CN110387015B (en) * | 2018-04-20 | 2021-11-16 | 中国石油化工股份有限公司 | Demulsifier, preparation method thereof and application thereof in demulsification of crude oil containing asphaltene |
| CN109575266A (en) * | 2018-11-27 | 2019-04-05 | 句容宁武高新技术发展有限公司 | A kind of more block allyl amine demulsifiers of modification and preparation method thereof |
| CN111171254B (en) * | 2020-02-14 | 2022-07-08 | 东北石油大学 | Preparation method of demulsifier for inhibiting oil-water intermediate transition layer |
| CN115044384B (en) * | 2022-05-30 | 2024-02-13 | 中国石油大学(华东) | Anionic-nonionic amphoteric gemini surfactant for natural gas hydrate clean fracturing fluid and preparation method thereof |
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| 聚醚类原油破乳剂的制备及性能;赵士乐;《中国优秀硕士学位论文全文数据库 工程科技Ⅰ辑》;20170115(第1期);第48-49页4.2.2节 |
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| CN106674452A (en) | 2017-05-17 |
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