CN100404611C - Alpha-olefin-styrene ultrahigh molecular weight copolymer suspension dispersing method - Google Patents
Alpha-olefin-styrene ultrahigh molecular weight copolymer suspension dispersing method Download PDFInfo
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- CN100404611C CN100404611C CNB031096301A CN03109630A CN100404611C CN 100404611 C CN100404611 C CN 100404611C CN B031096301 A CNB031096301 A CN B031096301A CN 03109630 A CN03109630 A CN 03109630A CN 100404611 C CN100404611 C CN 100404611C
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Abstract
The present invention relates to a suspension dispersing method of an alpha-olefin-styrene ultrahigh molecular weight copolymer for reducing drag in an oil transporting pipeline, which is characterized in that an organic solvent, such as cellosolves, is used as a main dispersing agent, alcohol solvents of C2 to C8 are used as auxiliary dispersing agents, an alpha-olefin-styrene ultrahigh molecular weight copolymer newly crushed is added after small quantities of various agents, such as surface active agents, reinforcing agents and bactericidal agents, are uniformly mixed, and the mixture is uniformly stirred to obtain a suspension disperse system of the ultrahigh molecular weight copolymer. The alpha-olefin-styrene ultrahigh molecular weight copolymer has the advantages of high solid content, low viscosity, good fluidity, improved high-and-low temperature performance and improved suspension stability performance.
Description
Relate to the field:
The present invention is the alpha-olefin-vinylbenzene ultrahigh molecular weight copolymer suspended dispersed method of oil pipe drag reduction, relates to the composition and the tubing system field of macromolecular compound.
Background technology
The alpha-olefin extra high molecular polymer is the main polymkeric substance of oil pipe drag reduction agent.The alpha-olefin extra high molecular polymer that adopts mass polymerization to obtain is the visco-elasticity bulk, can not directly annotate in oil pipeline, has only through deep cooling to be broken for powdered granule, and could use through the liquid solvent dissolving or after disperseing.At present, this dispersion technology mainly contains following three kinds:
(1) varsol dissolving technology: the particulate state frictional reducing polymer is dissolved into colloidal liquid with varsol.This method is simple and easy to do, but formed dissolved adhesiveness height, polymer content are low, require injection device efficient higher, have increased oil transportation cost simultaneously.
(2) straight chain alcohol dispersion technology: adopt C
2-C
10Straight chain alcohol be mixed, then the particulate state extra high molecular polymer is scattered in wherein, make the suspension type flow improver.This method solid content obviously improves, but since the density of this class alcohol less than the density of polymkeric substance, polymkeric substance sinks easily, must on-the-spotly stir during use.And this dispersion system cold resistance can be not good, and reaching extremely frigid zones in the winter time can not use.
(3) water-straight chain alcohol dispersion technology: this technology is the improved form of preceding a kind of technology, owing to add a certain amount of water, can make the density of the density of suspended dispersed system and polymkeric substance approaching, the dispersing property of polymkeric substance improves greatly, but such dispersion system cold resistance can be poorer, and, can not use until curing because the swelling effect of water makes the viscosity of dispersion system sharply increase with the prolongation of shelf-time.
Summary of the invention:
The objective of the invention is to invent a kind of solid content height, viscosity low, effectively improve the suspended dispersed method of the novel alpha-olefin-vinylbenzene ultra-high molecular weight drag reduction multipolymer of suspended dispersed system high temperature performance and suspending stabilized performance.
Frictional reducing polymer of the present invention is a kind of alpha-olefin-vinylbenzene ultrahigh molecular weight copolymer.At this frictional reducing polymer, its dispersion system and suspended dispersed method are such: an a kind of class organic solvent that is called cellosolve is made main dispersant, C
2-C
8Alcoholic solvent is made all kinds of medicaments of auxiliary dispersants and low quantity of surfactant, toughener and sterilant and is added reactor at normal temperatures and pressures after the mixing and stirring, add new broken alpha-olefin-vinylbenzene ultrahigh molecular weight copolymer, promptly make stable this kind multipolymer suspended dispersed system after stirring once more.Its proportioning is: in this copolymer soliquoid, alpha-olefin-shared weight ratio of vinylbenzene ultrahigh molecular weight copolymer is 10～40%, it is 5～70% that cellosolve accounts for weight ratio, it is 5～70% that alcoholic solvent accounts for weight ratio, the surfactant comprise weight ratio is 0.05%～1%, it is 0.001～0.1% that toughener accounts for weight ratio, and it is 0.001～0.1% that sterilant accounts for weight ratio.Here adopt C
2-C
8Alcoholic solvent be for adjusting the density of dispersion system, tensio-active agent is for improving the dispersing property of polymkeric substance, toughener is for preventing swelling, sterilant is for preventing polymer degradation.Wherein the concrete consumption of cellosolve and alcoholic solvent is by the decision of the kind of cellosolve and alcohols, and decision is that the density with dispersion agent and polymkeric substance (is generally 800～900kg/m
3) close being as the criterion.
The used cellosolve of this technology is ethylene glycol monomethyl ether, ethylene glycol ethyl ether, butyl glycol ether, ethylene glycol phenyl ether, glycol dimethyl ether, ethylene glycol diethyl ether, diethylene glycol dimethyl ether, triethylene glycol methyl ether, diethylene glycol ether, Diethylene Glycol butyl ether and tri ethylene glycol ethyl ether.C
2-C
8Alcohol has ethanol, n-propyl alcohol, propyl carbinol, Pentyl alcohol, amylalcohol-2, n-Octanol and octanol-2.Tensio-active agent is sodium laurylsulfonate, sodium lauryl sulphate and Sodium dodecylbenzene sulfonate.Toughener is a copper sulfate.Sterilant is WT-307B Biocidal algae-killing agent (dithiocyano-methane).
In order to improve the outward appearance of dispersion system, also can in the blended medicament, add a small amount of tinting material and mix with alpha-olefin-vinylbenzene ultrahigh molecular weight copolymer jointly.This tinting material is selected methylenum coeruleum for use, and it accounts for weight ratio in copolymer soliquoid be 0.001～0.01%.And alpha-olefin-vinylbenzene ultrahigh molecular weight copolymer is broken for 20～200 purpose powdered granules in preceding 48 hours carrying out dispersing technology.
Concrete enforcement:
Embodiment 1: by weight selecting butyl glycol ether (cellosolve) 40.5% respectively for use, alcoholic solvent n-propyl alcohol 11.2%, propyl carbinol 9.8%, octanol-2 8.4%, tensio-active agent sodium laurylsulfonate 0.2%, toughener cupric sulfate pentahydrate 0.01%, sterilant 0.007%, tinting material methylenum coeruleum 0.0007%, insert in the reactor jointly, the back that stirs adds new broken alpha-olefin-vinylbenzene ultrahigh molecular weight copolymer 30% (solid content is 30%) and stirs once more, obtains blue suspended dispersed system.This suspended dispersed system viscosity at room temperature is 0.012Pas, leaves standstill 10 hours under-40 ℃ of conditions, and viscosity is almost constant.Left standstill 10 hours under 50 ℃ of conditions, viscosity is increased to 0.36Pas, but still has stronger flowability.
Embodiment 2: by weight selecting cellosolve ethylene glycol diethyl ether 37.1%, diethylene glycol ether 3.6% respectively for use, alcoholic solvent amylalcohol-212.6%, n-Octanol 6.6%, tensio-active agent sodium lauryl sulphate 0.24%, toughener cupric sulfate pentahydrate 0.03%, sterilant 0.006%, tinting material methylenum coeruleum 0.0006%, put into reactor in the lump, the new broken alpha-olefin-vinylbenzene ultrahigh molecular weight copolymer 40% (solid content is 40%) of back adding stirs, restir is even, obtains blue suspended dispersed system.At room temperature the viscosity of this suspended dispersed system is 0.16Pas.Left standstill 10 hours under-40 ℃ of conditions, viscosity is almost constant.Left standstill 10 hours under 50 ℃ of conditions, viscosity is increased to 0.86Pas, but still has stronger flowability.
This suspended dispersed method is under the prerequisite that guarantees suspended dispersed system flow performance, solid content is brought up to more than 40% by 25～30% of general alpha-olefin high-molecular weight polymer suspended dispersed system, or guarantee that solid content is under 25～30% constant situations, improves the flowability (viscosity drops to 0.01Pas from 10～15Pas) of suspended dispersed system greatly.This method has also been improved the high temperature performance and the suspending stabilized performance of this type of suspended dispersed system greatly simultaneously.
Claims (10)
1. the alpha-olefin of an oil pipe drag reduction-vinylbenzene ultrahigh molecular weight copolymer suspended dispersed method, it is characterized in that with for the organic solvent of cellosolve as main dispersant, C
2-C
8After alcoholic solvent is made auxiliary dispersants and all kinds of medicaments of low quantity of surfactant, toughener and sterilant and mixed, add new broken alpha-olefin-vinylbenzene ultrahigh molecular weight copolymer, restir is even; In this copolymer soliquoid, alpha-olefin-shared weight ratio of vinylbenzene ultrahigh molecular weight copolymer is 10～40%, it is 5～70% that cellosolve accounts for weight ratio, it is 5～70% that alcoholic solvent accounts for weight ratio, the surfactant comprise weight ratio is 0.05～1%, it is 0.001～0.1% that toughener accounts for weight ratio, and it is 0.001～0.1% that sterilant accounts for weight ratio.
2. alpha-olefin according to claim 1-vinylbenzene ultrahigh molecular weight copolymer suspended dispersed method is characterized in that described cellosolve is ethylene glycol monomethyl ether, ethylene glycol ethyl ether, butyl glycol ether, ethylene glycol phenyl ether, glycol dimethyl ether, ethylene glycol diethyl ether, diethylene glycol dimethyl ether, triethylene glycol methyl ether, diethylene glycol ether, Diethylene Glycol butyl ether and tri ethylene glycol ethyl ether.
3. alpha-olefin according to claim 1-vinylbenzene ultrahigh molecular weight copolymer suspended dispersed method is characterized in that described alcoholic solvent comprises ethanol, n-propyl alcohol, propyl carbinol, Pentyl alcohol, Pentyl alcohol-2, n-Octanol and octanol-2.
4. alpha-olefin according to claim 1-vinylbenzene ultrahigh molecular weight copolymer suspended dispersed method is characterized in that described toughener is a copper sulfate.
5. alpha-olefin according to claim 1-vinylbenzene ultrahigh molecular weight copolymer suspended dispersed method is characterized in that described tensio-active agent is sodium laurylsulfonate, sodium lauryl sulphate and Sodium dodecylbenzene sulfonate.
6. alpha-olefin according to claim 1-vinylbenzene ultrahigh molecular weight copolymer suspended dispersed method is characterized in that described sterilant is a dithiocyano-methane.
7. alpha-olefin according to claim 1-vinylbenzene ultrahigh molecular weight copolymer suspended dispersed method is characterized in that also being added with the methylenum coeruleum tinting material in dispersion solvent.
8. alpha-olefin according to claim 7-vinylbenzene ultrahigh molecular weight copolymer suspended dispersed method is characterized in that described tinting material accounts for weight ratio in copolymer soliquoid be 0.001～0.01%.
9. alpha-olefin according to claim 1-vinylbenzene ultrahigh molecular weight copolymer suspended dispersed method is characterized in that described alpha-olefin-vinylbenzene ultrahigh molecular weight copolymer is broken for 20～200 purpose particles before carrying out dispersing technology.
10. alpha-olefin according to claim 1-vinylbenzene ultrahigh molecular weight copolymer suspended dispersed method is characterized in that described alpha-olefin-vinylbenzene ultrahigh molecular weight copolymer is broken in carrying out preceding 48 hours of dispersing technology.
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| Application Number | Priority Date | Filing Date | Title |
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| CNB031096301A CN100404611C (en) | 2003-04-10 | 2003-04-10 | Alpha-olefin-styrene ultrahigh molecular weight copolymer suspension dispersing method |
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| CNB031096301A CN100404611C (en) | 2003-04-10 | 2003-04-10 | Alpha-olefin-styrene ultrahigh molecular weight copolymer suspension dispersing method |
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| CN1536014A CN1536014A (en) | 2004-10-13 |
| CN100404611C true CN100404611C (en) | 2008-07-23 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7388046B2 (en) * | 2006-04-19 | 2008-06-17 | Baker Hughes Incorporated | Self-dispersing waxes as polymer suspension aids |
| CN101560301B (en) * | 2008-04-17 | 2011-08-03 | 中国石油天然气股份有限公司 | Method for emulsifying drag-reduction polymer suspension of oil pipeline |
| CN106545750B (en) * | 2016-10-27 | 2018-07-13 | 段恒宇 | The preparation method of low-temperature stabilization type poly alpha olefin oil product drag reducer suspension system |
| CN106764443B (en) * | 2016-12-21 | 2018-09-25 | 刘政一 | A kind of thickener suitable for poly alpha olefin oil product drag reducer |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5539044A (en) * | 1994-09-02 | 1996-07-23 | Conoco In. | Slurry drag reducer |
| CN1233271A (en) * | 1996-10-15 | 1999-10-27 | 康诺科有限公司 | Nonaqueous drag reducing suspensions |
-
2003
- 2003-04-10 CN CNB031096301A patent/CN100404611C/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5539044A (en) * | 1994-09-02 | 1996-07-23 | Conoco In. | Slurry drag reducer |
| CN1233271A (en) * | 1996-10-15 | 1999-10-27 | 康诺科有限公司 | Nonaqueous drag reducing suspensions |
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Effective date of registration: 20211110 Address after: Room 08-10, 6 / F, block a, No. 5, Dongtucheng Road, Chaoyang District, Beijing 100013 Patentee after: National Petroleum and natural gas pipeline network Group Co.,Ltd. Address before: Intercontinental building, 16 ande Road, Dongcheng District, Beijing 100011 Patentee before: PETROCHINA Co.,Ltd. |
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