CN110283580A - Pour point depression wax-proofing agent and preparation method thereof - Google Patents
Pour point depression wax-proofing agent and preparation method thereof Download PDFInfo
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- CN110283580A CN110283580A CN201910573534.6A CN201910573534A CN110283580A CN 110283580 A CN110283580 A CN 110283580A CN 201910573534 A CN201910573534 A CN 201910573534A CN 110283580 A CN110283580 A CN 110283580A
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- pour point
- point depression
- proofing agent
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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
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/10—Esters
- C08F220/12—Esters of monohydric alcohols or phenols
- C08F220/16—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms
- C08F220/18—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms with acrylic or methacrylic 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
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/52—Compositions for preventing, limiting or eliminating depositions, e.g. for cleaning
- C09K8/524—Compositions for preventing, limiting or eliminating depositions, e.g. for cleaning organic depositions, e.g. paraffins or asphaltenes
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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
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/10—Esters
- C08F220/12—Esters of monohydric alcohols or phenols
- C08F220/16—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms
- C08F220/18—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms with acrylic or methacrylic acids
- C08F220/1818—C13or longer chain (meth)acrylate, e.g. stearyl (meth)acrylate
Abstract
The invention discloses a kind of pour point depression wax-proofing agents, wherein the pour point depression wax-proofing agent includes: porous polymer, and with the wax in crude oil eutectic and/or absorption can occur for the porous polymer.Wherein, poromeric surface and inside include alkyl side chain, and with the wax in crude oil eutectic and/or absorption can occur for the alkyl side chain.By the above-mentioned means, the application effectively improves the low temperature rheologic behavior of waxy crude oil and reduces wax in the deposition of tube wall.
Description
Technical field
The present invention relates to pour point depression of crude oil anti-wax technique fields more particularly to a kind of pour point depression wax-proofing agent and preparation method thereof.
Background technique
Waxy crude oil is a kind of important fossil energy, is distributed widely in all over the world.Wax in waxy crude oil is mainly
The n-alkane of C16-C40, meanwhile, most waxy crude oil further include a certain amount of non-hydrocarbons colloid and asphalitine, therefore, the content of wax
The condensation point of crude oil is high, and poor fluidity, rheological behaviour are complicated under room temperature, and the wax being precipitated is easy to be deposited on tube wall, leads to such oil
The pipeline of product is difficult.
In the prior art, pour point depression wax-proofing agent can not effectively improve the low temperature rheologic behavior of waxy crude oil and reduce wax in pipe
The deposition of wall improves the economy and safety of oil product transport.
Therefore, the existing technology needs to be improved and developed.
Summary of the invention
In view of above-mentioned deficiencies of the prior art, the purpose of the present invention is to provide a kind of pour point depression wax-proofing agent and its preparation sides
Method, it is intended to solve in the prior art, pour point depression wax-proofing agent can not effectively improve the low temperature rheologic behavior of waxy crude oil and reduce wax
The deposition of tube wall the problem of.
Technical scheme is as follows:
A kind of pour point depression wax-proofing agent, wherein the pour point depression wax-proofing agent includes:
Porous polymer, and with the wax in crude oil eutectic and/or absorption can occur for the porous polymer.
Wherein, poromeric surface and it is internal include alkyl side chain, the alkyl side chain can in crude oil
Eutectic and/or absorption occur for wax.
Wherein, poromeric monomer includes Long Chain Alkyl Acrylate, the length in the Long Chain Alkyl Acrylate
Chain base carbon number is not less than 16.
Wherein, poromeric internal pore structure includes abscess and pore；
When preparing the porous polymer using High Internal Phase Emulsion template, the abscess is generated by interior phase dispersant liquid drop,
The pore is generated by pore-foaming agent.
Wherein, the diameter of the abscess is 0.5-600 μm, and the diameter of the pore is 0.1-300 μm.
Wherein, poromeric particle size range is 100nm~10 μm.
Wherein, additive amount of the porous polymer in crude oil is 10-500mg/Kg.
A kind of preparation method of pour point depression wax-proofing agent, wherein the described method includes:
Poromeric monomer, crosslinking agent and emulsifier are provided, and melts obtain the first mixture at a certain temperature；
First mixture and a certain amount of water are emulsified into a period of time under stirring, obtained in water-in-oil type height
Phase emulsion；
The water-in-oil type High Internal Phase Emulsion is stood under nitrogen atmosphere with initiator and reacts a period of time, is obtained described
Pour point depression wax-proofing agent；
Wherein, poromeric monomer includes Long Chain Alkyl Acrylate, the length in the Long Chain Alkyl Acrylate
Chain base carbon number is not less than 16.
Wherein, during preparing first mixture, further includes:
Add silane coupling agent.
Wherein, described to stand the water-in-oil type High Internal Phase Emulsion under nitrogen atmosphere with initiator when reacting one section
Between, the method for obtaining the pour point depression wax-proofing agent includes:
The water-in-oil type High Internal Phase Emulsion is stood under nitrogen atmosphere with initiator and reacts a period of time, is obtained described
Porous polymer；
The porous polymer is ground to particle size range 100nm~10 μm.
The utility model has the advantages that be different from the prior art, the pour point depression wax-proofing agent of the application includes porous polymer, due to described more
With the wax in crude oil eutectic and/or absorption can occur for pore polymer in temperature-fall period, and wax molecule can be in through hole
Crystallization is precipitated, and the wax in crude oil is even closer in conjunction with the pour point depression wax-proofing agent, so that knot of the porous polymer as wax molecule
Crystal template forms the more regular and compact wax crystalline substance aggregation of structure, to greatly improve the mobile performance of crude oil, it is solidifying to reduce crude oil
Point；And the polar group in the porous polymer increases the interfacial tension between wax and oily phase, by the nucleation position for promoting wax
It builds, wax is made to be difficult to crystallize precipitation, reduce wax in the deposition of tube wall.
Detailed description of the invention
Fig. 1 is the scanning electron microscope (SEM) photograph of a poromeric embodiment in the present invention.
Fig. 2 is the flow diagram of one embodiment of preparation method of the application pour point depression wax-proofing agent.
Fig. 3 is the flow diagram of mono- embodiment of S300 in Fig. 2.
Specific embodiment
The present invention provides a kind of pour point depression wax-proofing agent and preparation method thereof, to make the purpose of the present invention, technical solution and effect
Clearer, clear, the present invention is described in more detail below.It should be appreciated that specific embodiment described herein is only
To explain the present invention, it is not intended to limit the present invention.
Before the technical solution for illustrating the application, the characteristics of first introducing the wax in crude oil.
Wax in waxy crude oil is primarily referred to as the n-alkane of C16-C40, at the same most waxy crude oil also contain it is a certain amount of
Non-hydrocarbons colloid, asphalitine component.Asphalitine is crude oil middle-molecular-weihydroxyethyl maximum, the strongest fused aromatic rings system non-hydrocarbons object of polarity
Matter；Asphaltene molecules do not dissolve in crude oil, are often scattered in crude oil in the form of the micelle that associates, and colloid is adsorbed in association micelle table
Play the role of asphalitine stabilizer in face.The wax content of waxy crude oil is high, and wax molecule is opened because of supersaturation under higher oil temperature
Begin to crystallize and be precipitated.Many studies demonstrate that association asphalitine micelle be wax crystal modifier natural in crude oil, can by out-phase at
The effect of epipole participates in analysis wax process, and then causes in waxy crude oil and form a large amount of reduced wax crystal (sub-micron~several micro-
Rice), and generate biggish crystalline substance/liquid interface.On the one hand, biggish crystalline substance/liquid interface makes wax recovery surface solvent layer internal beam
The liquid oil tied up increases；On the other hand, biggish crystalline substance/liquid interface also promotes the interaction between wax recovery.It is above-mentioned because
Element causes under relatively low analysis wax amount (2wt% or so) and higher temperature, and waxy crude oil can be because forming loose wax
Brilliant three-dimensional net structure and be gelled, and embody the non-Newton fluid characteristics such as complicated viscoelastic, thixotroping, surrender.Therefore, contain
The condensation point of wax crude oil is high, and poor fluidity, rheological behaviour are complicated under room temperature, and wax crystalline substance is precipitated and is easy to be deposited on tube wall, causes such
Product pipeline difficulty of transportation.
This application discloses a kind of pour point depression wax-proofing agents, wherein the pour point depression wax-proofing agent includes porous polymer, and described more
With the wax in crude oil eutectic and/or absorption can occur for pore polymer.Specifically, the porous polymer can in temperature-fall period,
Eutectic and/or absorption occurs with the wax molecule in crude oil.Wherein, the wax molecule mainly includes the n-alkane of C16-C40.
In the present embodiment, since with the wax in crude oil eutectic can occur for the porous polymer in temperature-fall period
And/or absorption, and wax molecule can crystallize precipitation in through hole, the wax in crude oil in conjunction with the pour point depression wax-proofing agent more
Closely, so that crystallization template of the porous polymer as wax molecule, forms the more regular and compact wax crystalline substance aggregation of structure, thus
The mobile performance of crude oil is greatly improved, condensation point of crude oil is reduced；And the polar group in the porous polymer increases wax and oily phase
Between interfacial tension so that wax is difficult to crystallize precipitations, deposition of the reduction wax in tube wall by promoting the nucleation barrier potential of wax.
Further, poromeric surface and inside include alkyl side chain, and the alkyl side chain can be with crude oil
In wax eutectic and/or absorption occurs, in this way, wax and poromeric surface in crude oil and it is internal include alkyl side
Chain forms stable crystal structure by eutectic, even if also can effectively avoid in crude oil in the case where external environment changes
Wax caused by wax is separated with the porous polymer is precipitated.
Further, poromeric monomer includes Long Chain Alkyl Acrylate, the Long Chain Alkyl Acrylate
In chain alkyl side chain carbon number be not less than 16, e.g., the chain alkyl side chain carbon number be 16,18 or 20 etc., this is
Since when the chain alkyl side chain carbon number is less than 16, the interaction between the chain alkyl side chain carbon number and wax molecule
Power is insufficient, it is difficult to be precipitated with wax molecule eutectic.Therefore, the chain alkyl side chain carbon number is not particularly limited herein, as long as institute
Stating the chain alkyl side chain carbon number in Long Chain Alkyl Acrylate eutectic and/or absorption can occur with the wax in crude oil i.e.
It can.
In another embodiment, referring to FIG. 1, Fig. 1 is that a poromeric embodiment is swept in the present invention
Electron microscope is retouched, poromeric internal pore structure includes abscess and pore；When using described in the preparation of High Internal Phase Emulsion template
When porous polymer, the pore is generated by interior phase dispersant liquid drop, and the pore is generated by pore-foaming agent.Specifically, the pore
Crude oil can effectively be adsorbed, and described abscess can provide preferable fluid circulation place, by the pour point depression wax control of the application
When agent is added in crude oil, crude oil passes through the pore in conjunction with the porous polymer, and by the abscess described more
It circulates in pore polymer, and wax and porous polymer sheet during crude oil and the porous polymer contact, in crude oil
Eutectic and/or absorption occur for the alkyl side chain of face or inside, so that the wax in crude oil more steps up in conjunction with the pour point depression wax-proofing agent
It is close, be conducive to the solubility increased wax in crude oil and then reduce the precipitation of wax；And the polar group in the porous polymer
Increase the interfacial tension between wax and oily phase, by promoting the nucleation barrier potential of wax, makes wax be difficult to crystallize precipitation, reduce wax in tube wall
Deposition, and then improve waxy crude oil low temperature rheological behaviour.
Wherein, the High Internal Phase Emulsion refers to lotion of the disperse phase volume 74% or more；And High Internal Phase Emulsion template
Refer to using multi-panel emulsion droplet as template, at a certain temperature, carries out polymerization reaction in droplet surface, and pass through after polymerization terminates
Wash the method for being dried to obtain porous polymer material.In the present embodiment, interior dispersed phase includes water；The pore-foaming agent includes
One of toluene, hexamethylene or chlorobenzene or above combination, specifically, which kind of dispersed phase and which kind of pore-foaming agent needs selected
According to environment is prepared and product requirement is determined, so without limitation.
Further, the diameter of the abscess is 0.5-600 μm, e.g., 0.5 μm, 10 μm, 100 μm, 300 μm or 600 μm
Deng herein more specific restriction is not done in the aperture of the abscess, as long as crude oil can be promoted to flow wherein；The pore
Diameter be 0.1-300 μm, such as 0.1 μm, 10 μm, 100 μm, 200 μm or 300 μm, in one embodiment, the hair
The diameter in hole is the 1-20% in the abscess aperture, e.g., 1%, 5%, 10% or 20% etc., the aperture of the pore is not done herein
It more specifically limits, as long as can carry out effectively adsorbing to crude oil.
Further, traditional polymer-type pour-point depressant is in chain or pectination, is passed through in the pipeline of long range
The shearing of pipe stream and the high speed shear for crossing pump, structure can generate a degree of destruction, and the interaction between wax
It is affected, therefore the timeliness of traditional polymer pour-point depressant, anti-shearing anti-Repeat-heating ability etc. are poor.Compared to chain
Or traditional pour-point depressant of pectination, the porous polymer in the pour point depression wax-proofing agent of the application have three-dimensional perforation pore structure, itself knot
Structure is more stable；In addition, the abscess and the pore etc. in the porous polymer make the porous polymer that height be presented
Perforative vestibule-channel design is spent, can play the effect of wax crystallization template in waxy crude oil, promotes that size is bigger, structure
The formation of overall compact wax crystalline substance, thus there are stronger interactions between the porous polymer and wax.Obviously microcosmic
Structure and with the interaction of the wax in crude oil in terms of, the porous polymer has more advantages, therefore, described porous poly-
It closes object and more preferably timeliness, anti-shearing anti-Repeat-heating ability and stronger coagulation and viscosity reducing effect is presented.
Further, described porous in order to guarantee that the porous polymer comes into full contact with crude oil and is effectively adsorbed
The specific surface area of polymer should sufficiently large namely poromeric partial size should not be too large；And in order to guarantee that crude oil exists
Sufficiently flowing spreads and eutectic and/or suction occurs with the porous polymer in poromeric three cellular structures
Attached, poromeric partial size is unsuitable too small.In the present embodiment, porous polymer described in the anti-condensation wax-proofing agent
Particle size range be 100nm~10 μm, e.g., 100nm, 500nm, 1 μm or 10 μm etc., not only convenient formation, and helping to obtain
Preferable Paraffin Control effect.Certainly, for different crude oil and different Paraffin Control requirements, poromeric grain
Diameter can be selected according to the actual situation, crossed this and be not specifically limited.
In another embodiment, additive amount of the porous polymer in crude oil is 10-500mg/Kg, e.g., 10mg/
Kg, 50mg/Kg, 100mg/Kg, 200mg/Kg or 200mg/Kg etc., specifically, poromeric additive amount with it is porous
The structure of polymer and the property of crude oil are related, can be determined according to the actual situation, to obtain better Paraffin Control effect
Fruit is not specifically limited herein.
In order to solve the above technical problems, disclosed herein as well is a kind of preparation methods of pour point depression wax-proofing agent.Referring to FIG. 2,
Fig. 2 is the flow diagram of one embodiment of preparation method of the application pour point depression wax-proofing agent, wherein the described method includes:
Step S100, poromeric monomer, crosslinking agent and emulsifier are provided, and melts obtain the at a certain temperature
One mixture.
In the step S100, wherein poromeric monomer includes Long Chain Alkyl Acrylate, the propylene
Long-chain base carbon number in sour high-carbon alcohol ester is not less than 16, and e.g., the long-chain base carbon number is 16,18 or 20 etc., in short, only
Want the long-chain base in Long Chain Alkyl Acrylate that eutectic and/or absorption can occur with the wax in crude oil；The crosslinking
Agent includes divinylbenzene；The emulsifier includes span series, e.g., Arlacel-80 etc..Further, described
The dosage of crosslinking agent is the 1-10% of monomer mass, e.g., 1%, 5% or 10% etc.；The dosage of the emulsifier is the monomer
The 25-35% of quality, e.g., 25%, 30% or 35% etc..
Step S200, first mixture and a certain amount of water are emulsified into a period of time under stirring, obtain oil
Water-in type High Internal Phase Emulsion.
In the step S200, the additional amount of water is greater than the 74% of water and monomer cumulative volume, namely by described first
Mixture and a certain amount of water emulsify in a period of time under stirring, and the volume ratio of the water and first mixture is big
In 74%；Further, agitating mode can be mechanical stirring or magnetic agitation, in one embodiment, be stirred using magnetic force
Mix it is 30-60 minutes emulsified, e.g., 30 minutes, 45 minutes or 60 minutes etc..
Step S300, the water-in-oil type High Internal Phase Emulsion is stood under nitrogen atmosphere with initiator when reacting one section
Between, obtain the pour point depression wax-proofing agent.
Further, during preparing first mixture, further includes: added when preparing emulsion silane coupled
Agent, additive amount are 100~1000ppm.In the present embodiment, the silane coupling agent is added to be conducive to improve porous polymer
The stability of structure improves the using effect of the pour point depression wax-proofing agent.
Further, referring to FIG. 3, Fig. 3 is the flow diagram of mono- embodiment of S300 in Fig. 2, wherein described by institute
It states water-in-oil type High Internal Phase Emulsion and is stood under nitrogen atmosphere with initiator and react a period of time, obtain the pour point depression wax-proofing agent
Method includes:
Step S310, the water-in-oil type High Internal Phase Emulsion is stood under nitrogen atmosphere with initiator when reacting one section
Between, obtain the porous polymer.Specifically, the water-in-oil type High Internal Phase Emulsion is transferred to mold by the modes such as toppling over
In, it is stood under nitrogen atmosphere with initiator and reacts a period of time, obtain the porous polymer.In the present embodiment, institute
The dosage for stating initiator is the 0.5-1.5% of the monomer mass, e.g., 0.5%, 1% or 1.5% etc.；Further, described to draw
Sending out agent includes azo-bis-isobutyl cyanide.
Step S320, the porous polymer is ground to particle size range 100nm~10 μm.
In the step S320, in order to guarantee that the porous polymer comes into full contact with crude oil and is effectively adsorbed,
Poromeric specific surface area should sufficiently large namely poromeric partial size should not be too large；And in order to protect
Demonstrate,proving crude oil, sufficiently flowing spreads and eutectic occurs with the porous polymer in poromeric three cellular structures
And/or absorption, poromeric partial size are unsuitable too small.In the present embodiment, more described in the pour point depression wax-proofing agent
The particle size range of pore polymer is 100nm~10 μm, e.g., 100nm, 500nm, 1 μm or 10 μm etc., not only convenient formation, and have
Conducive to the preferable Paraffin Control effect of acquisition.Certainly, described porous poly- for different crude oil and different Paraffin Control requirements
The partial size for closing object can be selected according to the actual situation, crossed this and be not specifically limited.
The technical solution of the application is further illustrated below by embodiment:
Embodiment 1:
By the octadecyl acrylate (reaction monomers) of 26mL, the divinylbenzene of the octadecyl acrylate quality 10%
It is mixed that the Arlacel-80 (emulsifier) of (crosslinking agent), the octadecyl acrylate quality 30% heating and melting at 70 DEG C obtains first
Close object；
The distilled water of first mixture and 74mL is emulsified into 30min under stirring and prepares phase in water-in-oil type height
Lotion；
Using the azo-bis-isobutyl cyanide of the octadecyl acrylate quality 1% as initiator, by the water-in-oil type of preparation
High Internal Phase Emulsion is transferred in mold and stands reaction 1 day under nitrogen atmosphere protection, and the porous polymer is made；It will be described
It is 100nm~10 μm that porous polymer, which is ground to particle size range, obtains pour point depression wax-proofing agent 1.
Embodiment 2:
The divinylbenzene of the Process Conditions of Cetane Acrylate (reaction monomers) of 24mL, the Process Conditions of Cetane Acrylate quality 5% (is handed over
Connection agent), the Arlacel-80 (emulsifier) of the Process Conditions of Cetane Acrylate quality 30% heating and melting at 60 DEG C obtain the first mixing
Object；
The distilled water of first mixture and 76mL is emulsified into 30min under stirring and prepares phase in water-in-oil type height
Lotion；
Using the azo-bis-isobutyl cyanide of the Process Conditions of Cetane Acrylate quality 1% as initiator, by the water-in-oil type of preparation
High Internal Phase Emulsion is transferred in mold and stands reaction 1 day under nitrogen atmosphere protection, and the porous polymer is made；It will be described
It is 100nm~10 μm that porous polymer, which is ground to particle size range, obtains pour point depression wax-proofing agent 2.
Embodiment 3:
By 20 ester of acrylic acid (reaction monomers) of 22mL, the divinylbenzene of 20 ester quality 10% of the acrylic acid
It is mixed that the Arlacel-80 (emulsifier) of 20 ester quality 30% of (crosslinking agent), acrylic acid heating and melting at 80 DEG C obtains first
Close object；
The distilled water of first mixture and 78mL is emulsified into 30min under stirring and prepares phase in water-in-oil type height
Lotion；
Using the azo-bis-isobutyl cyanide of the 20 ester quality 1% of acrylic acid as initiator, by the water-in-oil type of preparation
High Internal Phase Emulsion is transferred in mold and stands reaction 1 day under nitrogen atmosphere protection, and the porous polymer is made；It will be described
It is 100nm~10 μm that porous polymer, which is ground to particle size range, obtains pour point depression wax-proofing agent 3.
The effect of the application pour point depression wax-proofing agent is examined by taking the pour point depression wax-proofing agent 1 as an example:
Pour point depression wax-proofing agent 1 described in table 1 compares in the pour point depression wax control result of different crude oils
As known from Table 1, for different crude oil, the pour point depression wax-proofing agent 1, which is added, can effectively lower the condensation point of crude oil, glue
Degree and accumulative analysis wax amount.
The anti-condensation wax-proofing agent 1 is ground to particle diameter distribution to add behind 100nm~10 μm with the concentration of 10~500mg/kg
Enter into Changqing Crude Oil, compare after the different amounts of anti-condensation wax-proofing agent is added, the apparent viscosity when condensation point of crude oil, 10 DEG C and
0 DEG C of accumulative analysis wax amount enters the following table 2.
Apparent viscosity when 2 Changqing Crude Oil of table adds condensation point, 10 DEG C before and after the pour point depression wax-proofing agent of the application and 0 DEG C it is accumulative
Analyse wax scale
As known from Table 2, the anti-condensation wax-proofing agent of the application can significantly reduce condensation point of crude oil, low temperature viscosity and wax deposit
Amount, and function and effect have the abilities such as the heating of apparent robust to repeated, mechanical resistant shearing；Meanwhile as the anti-condensation wax-proofing agent adds
Enter the increase of amount, the apparent viscosity and 0 DEG C of accumulative analysis wax amount when the condensation point of crude oil, 10 DEG C are decreased obviously, it is seen then that the application
Anti-condensation wax-proofing agent can reduce wax in the deposition of tube wall, and then improve the low temperature rheological behaviour of waxy crude oil.
In conclusion the pour point depression wax-proofing agent of the application includes porous polymer, since the porous polymer can cool down
Occur eutectic and/or absorption with the wax in crude oil in the process, and wax molecule can crystallize precipitation in through hole, in crude oil
Wax is even closer in conjunction with the pour point depression wax-proofing agent, so that crystallization template of the porous polymer as wax molecule, forms structure more
Regular and compact wax crystalline substance aggregation reduces condensation point of crude oil to greatly improve the mobile performance of crude oil；And the porous polymeric
The interfacial tension that polar group in object increases between wax and oily phase makes wax be difficult to crystallize analysis by promoting the nucleation barrier potential of wax
Out, wax is reduced in the deposition of tube wall.
It should be understood that the application of the present invention is not limited to the above for those of ordinary skills can
With improvement or transformation based on the above description, all these modifications and variations all should belong to the guarantor of appended claims of the present invention
Protect range.
Claims (10)
1. a kind of pour point depression wax-proofing agent, which is characterized in that the pour point depression wax-proofing agent includes:
Porous polymer, and with the wax in crude oil eutectic and/or absorption can occur for the porous polymer.
2. pour point depression wax-proofing agent according to claim 1, which is characterized in that poromeric surface and inside include
With the wax in crude oil eutectic and/or absorption can occur for alkyl side chain, the alkyl side chain.
3. pour point depression wax-proofing agent according to claim 1, which is characterized in that poromeric monomer includes acrylic acid
High-carbon alcohol ester, the chain alkyl side chain carbon number in the Long Chain Alkyl Acrylate are not less than 16.
4. pour point depression wax-proofing agent according to claim 1, which is characterized in that poromeric internal pore structure includes
Abscess and pore；
When preparing the porous polymer using High Internal Phase Emulsion template, the abscess is generated by interior phase dispersant liquid drop, described
Pore is generated by pore-foaming agent.
5. pour point depression wax-proofing agent according to claim 4, which is characterized in that the diameter of the abscess is 0.5-600 μm, described
The diameter of pore is 0.1-300 μm.
6. pour point depression wax-proofing agent according to claim 1, which is characterized in that poromeric particle size range is
100nm~10 μm.
7. pour point depression wax-proofing agent according to claim 1, which is characterized in that additive amount of the porous polymer in crude oil
For 10-500mg/Kg.
8. a kind of preparation method of pour point depression wax-proofing agent, which is characterized in that the described method includes:
Poromeric monomer, crosslinking agent and emulsifier are provided, and melts obtain the first mixture at a certain temperature；
First mixture and a certain amount of water are emulsified into a period of time under stirring, obtain the high interior mutually cream of water-in-oil type
Liquid；
The water-in-oil type High Internal Phase Emulsion is stood under nitrogen atmosphere with initiator and reacts a period of time, obtains the pour point depression
Wax-proofing agent；
Wherein, poromeric monomer includes Long Chain Alkyl Acrylate, the long-chain base in the Long Chain Alkyl Acrylate
Carbon number is not less than 16.
9. according to the method described in claim 8, it is characterized in that, during preparing first mixture, further includes:
Add silane coupling agent.
10. according to the method described in claim 8, it is characterized in that, described by the water-in-oil type High Internal Phase Emulsion and initiation
Agent stands reaction a period of time under nitrogen atmosphere, and the method for obtaining the pour point depression wax-proofing agent includes:
The water-in-oil type High Internal Phase Emulsion is stood under nitrogen atmosphere with initiator and reacts a period of time, is obtained described porous
Polymer；
It is 100nm~10 μm that the porous polymer, which is ground to particle size range,.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910573534.6A CN110283580B (en) | 2019-06-28 | 2019-06-28 | Pour point depressing and paraffin inhibitor and its prepn |
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| CN201910573534.6A CN110283580B (en) | 2019-06-28 | 2019-06-28 | Pour point depressing and paraffin inhibitor and its prepn |
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| CN110283580A true CN110283580A (en) | 2019-09-27 |
| CN110283580B CN110283580B (en) | 2021-04-20 |
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