CN104154422A - Crude oil pour-point-reducing and viscosity-reducing nanometer base material compound, preparation method thereof and crude oil - Google Patents
Crude oil pour-point-reducing and viscosity-reducing nanometer base material compound, preparation method thereof and crude oil Download PDFInfo
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- CN104154422A CN104154422A CN201410336253.6A CN201410336253A CN104154422A CN 104154422 A CN104154422 A CN 104154422A CN 201410336253 A CN201410336253 A CN 201410336253A CN 104154422 A CN104154422 A CN 104154422A
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Abstract
The invention discloses a crude oil pour-point-reducing and viscosity-reducing nanometer base material compound, a preparation method thereof and crude oil, and belongs to the technical field of crude oil pour point reducers. The compound comprises surface-modified crude oil pour point reducer nanometer base materials and a compound body; the weight ratio of the surface-modified crude oil pour point reducer nanometer base materials to the compound body is 10:1-1:10; surface-modified crude oil pour point reducers are obtained by grafting polar groups to surfaces of inorganic nanometer particles; and the compound body is selected from ethylene vinyl acetate, maleic anhydride- metacrylic acid ester- vinyl acetate terpolymer, phenol and naphthaline. The invention also provides two preparation methods for the compound. 50g/t-100g/t of the crude oil pour-point-reducing and viscosity-reducing nanometer base material compound is added in the crude oil. The compound, the preparation method thereof and the crude oil can meet technical requirements on application of crude oil in Daqing under the condition of full delivery.
Description
Technical field
The present invention relates to pour point depressant for crude oil technical field, particularly a kind of pour point depression of crude oil viscosity reduction nanometer substrate composite and preparation method thereof.
Background technique
Pour point depressant for crude oil technology starts from 1931 the earliest, conventional pour point depressant for crude oil mainly contains following several types: ethylene-vinyl acetate copolymer and derivative thereof, (methyl) Long Chain Alkyl Acrylate base polymer and derivative thereof, phenylethylene-maleic anhydride-Long Chain Alkyl Acrylate copolymer and derivative thereof, Long Chain Alkyl Acrylate-maleic anhydride vinyl acetate copolymer and derivative thereof.These pour-point depressants have good pour point depression effect in waxy crude oil, in China's waxy crude oil delivery technology, play an important role.But, also there is following shortcoming: the one, pour-point depressant is pointed, and different crude oils is suitable for variety classes pour-point depressant, does not find desirable pour-point depressant so far for Daqing oil; The 2nd, under integrated treatment condition, crude oil temperature gos up larger on low temperature rheological behaviour impact, exists temperature recovery to worsen district; The 3rd, dynamic after waxy crude oil integrated treatment and statically stablely ageingly can't meet pipe safety operating conditions; The 4th, adding of pour-point depressant causes the deposition of wax in pipeline to increase.
Summary of the invention
In order to address the above problem, the present invention proposes a kind of crude oil that can be applicable to pour point depression of crude oil viscosity reduction nanometer substrate composite, its preparation method of Daqing oil and be added with this pour point depression of crude oil viscosity reduction nanometer substrate composite.
The weight ratio of the each component of pour point depression of crude oil viscosity reduction nanometer substrate composite provided by the invention is respectively the pour point depressant for crude oil nanometer base material through surface modification: the scope of compound is 10:1～1:10, wherein, the described pour point depressant for crude oil through surface modification is grafted to inorganic nano-particle sub-surface by polar group and obtains, and described compound is selected from ethylene vinyl acetate, maleic anhydride-methacrylate-vinyl acetate terpolymer, phenol, naphthalene.
As preferably, described inorganic nano-particle is selected from nano-calcium carbonate, nanomete talc powder, nano montmorillonite, nano silicon.
As preferably, described polar group is selected from the silane, amino silane of chain structure silane coupler, different chain structures, silane containing different chain length alkyl structure.
The preparation method of pour point depression of crude oil viscosity reduction nanometer substrate composite provided by the invention comprises the following steps:
Be that 10:1～1:10 stirs by pour point depressant for crude oil nanometer base material and compound through surface modification according to the scope of weight ratio, wherein, the described pour point depressant for crude oil through surface modification is grafted to inorganic nano-particle sub-surface by polar group and obtains, and described compound is selected from ethylene vinyl acetate, maleic anhydride-methacrylate-vinyl acetate terpolymer, phenol, naphthalene.
As preferably, the preparation method of pour point depression of crude oil viscosity reduction nanometer substrate composite provided by the invention also comprises the step of extrusion molding wire drawing granulation.
In crude oil provided by the invention, be added with described pour point depression of crude oil viscosity reduction nanometer substrate composite, adding dosage is 50g/t～100g/t.
Pour point depression of crude oil viscosity reduction nanometer substrate composite Daqing crude oil treatment temperature provided by the invention 58 DEG C～65 DEG C, add dosage and drop to 17 DEG C～18 DEG C, viscosity-reducing rate at the pour point depression of crude oil viscosity reduction nanometer substrate composite provided by the invention condensation point of crude oil after treatment of 50g/t～100g/t by 33 DEG C and reach 88%～92%; Crude oil double heating treatment temperature can be down to 35 DEG C, 24 DEG C of condensation points.Compared with traditional pour-point depressant EVA, condensation point has declined 4 DEG C～7 DEG C, and the comprehensive heat treated temperature of secondary can reduce by 20 DEG C, can meet the technical requirements that Daqing crude oil is applied under completely defeated condition.
The preparation method of pour point depression of crude oil viscosity reduction nanometer substrate composite provided by the invention can prepare pour point depression of crude oil viscosity reduction nanometer substrate composite provided by the invention.
In crude oil provided by the invention, owing to having added pour point depression of crude oil viscosity reduction nanometer substrate composite provided by the invention, condensation point drops to 17 DEG C～18 DEG C, viscosity-reducing rate by 33 DEG C and reaches 88%～92%; Crude oil double heating treatment temperature can be down to 35 DEG C, 24 DEG C of condensation points.Compared with traditional pour-point depressant EVA, condensation point has declined 4 DEG C～7 DEG C, and the comprehensive heat treated temperature of secondary can reduce by 20 DEG C, can meet the technical requirements that Daqing crude oil is applied under completely defeated condition.
Embodiment
In order to understand the present invention in depth, below in conjunction with drawings and the specific embodiments, the present invention is described in detail.
The weight ratio of the each component of pour point depression of crude oil viscosity reduction nanometer substrate composite provided by the invention is respectively the pour point depressant for crude oil nanometer base material through surface modification: the scope of compound is 10:1～1:10, wherein, through the pour point depressant for crude oil of surface modification, polar group is grafted to inorganic nano-particle sub-surface and obtains, compound is selected from ethylene vinyl acetate, maleic anhydride-methacrylate-vinyl acetate terpolymer, phenol, naphthalene.
Pour point depression of crude oil viscosity reduction nanometer substrate composite Daqing crude oil treatment temperature provided by the invention 58 DEG C～65 DEG C, add dosage and drop to 17 DEG C～18 DEG C, viscosity-reducing rate at the pour point depression of crude oil viscosity reduction nanometer substrate composite provided by the invention condensation point of crude oil after treatment of 50g/t～100g/t by 33 DEG C and reach 88%～92%; Crude oil double heating treatment temperature can be down to 35 DEG C, 24 DEG C of condensation points.Compared with traditional pour-point depressant EVA, condensation point has declined 4 DEG C～7 DEG C, and the comprehensive heat treated temperature of secondary can reduce by 20 DEG C, can meet the technical requirements that Daqing crude oil is applied under completely defeated condition.
Wherein, as the specific implementation of inorganic nano-particle, inorganic nano-particle is selected from nano-calcium carbonate, nanomete talc powder, nano montmorillonite, nano silicon.
Wherein, as the concrete implementation of polar group, polar group is selected from the silane, amino silane of chain structure silane coupler, different chain structures, silane containing different chain length alkyl structure.
The preparation method of pour point depression of crude oil viscosity reduction nanometer substrate composite provided by the invention comprises the following steps:
Be that 10:1～1:10 stirs by pour point depressant for crude oil nanometer base material and compound through surface modification according to the scope of weight ratio, wherein, through the pour point depressant for crude oil of surface modification, polar group is grafted to inorganic nano-particle sub-surface and obtains, compound is selected from ethylene vinyl acetate, maleic anhydride-methacrylate-vinyl acetate terpolymer, phenol, naphthalene.
The preparation method of pour point depression of crude oil viscosity reduction nanometer substrate composite provided by the invention can prepare pour point depression of crude oil viscosity reduction nanometer substrate composite provided by the invention.
Wherein, the preparation method of pour point depression of crude oil viscosity reduction nanometer substrate composite provided by the invention also comprises the step of extrusion molding wire drawing granulation, thereby it is solid-state that pour point depression of crude oil viscosity reduction nanometer base material provided by the invention is formed, and is convenient to accumulating.
In crude oil provided by the invention, be added with pour point depression of crude oil viscosity reduction nanometer substrate composite, adding dosage is 50g/t～100g/t.
Table 1 embodiment 1～4
According to table 1, in crude oil provided by the invention, owing to having added pour point depression of crude oil viscosity reduction nanometer substrate composite provided by the invention, condensation point drops to 17 DEG C～18 DEG C, viscosity-reducing rate by 33 DEG C and reaches 88%～92%; Crude oil double heating treatment temperature can be down to 35 DEG C, 24 DEG C of condensation points.Compared with traditional pour-point depressant EVA, condensation point has declined 4 DEG C～7 DEG C, and the comprehensive heat treated temperature of secondary can reduce by 20 DEG C, can meet the technical requirements that Daqing crude oil is applied under completely defeated condition.
Above embodiment; object of the present invention, technological scheme and beneficial effect are further described; institute is understood that; these are only the specific embodiment of the present invention; be not limited to the present invention; within the spirit and principles in the present invention all, any amendment of making, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (6)
1. a pour point depression of crude oil viscosity reduction nanometer substrate composite, it is characterized in that, the weight ratio of each component is respectively the pour point depressant for crude oil nanometer base material through surface modification: the scope of compound is 10:1～1:10, wherein, the described pour point depressant for crude oil through surface modification is grafted to inorganic nano-particle sub-surface by polar group and obtains, and described compound is selected from ethylene vinyl acetate, maleic anhydride-methacrylate-vinyl acetate terpolymer, phenol, naphthalene.
2. composite according to claim 1, is characterized in that, described inorganic nano-particle is selected from nano-calcium carbonate, nanomete talc powder, nano montmorillonite, nano silicon.
3. composite according to claim 1, is characterized in that, the silane of described polar group chain structure silane coupler, different chain structures, amino silane, containing the silane of different chain length alkyl structure.
4. the preparation method based on arbitrary described pour point depression of crude oil viscosity reduction nanometer substrate composite in claim 1～3 comprises the following steps:
Be that 10:1～1:10 stirs by pour point depressant for crude oil nanometer base material and compound through surface modification according to the scope of weight ratio, wherein, the described pour point depressant for crude oil through surface modification is grafted to inorganic nano-particle sub-surface by polar group and obtains, and described compound is selected from ethylene vinyl acetate, maleic anhydride-methacrylate-vinyl acetate terpolymer, phenol, naphthalene.
5. the preparation method based on pour point depression of crude oil viscosity reduction nanometer substrate composite claimed in claim 4, is characterized in that, also comprises the step of extrusion molding wire drawing granulation.
6. a crude oil, is characterized in that, is added with arbitrary described pour point depression of crude oil viscosity reduction nanometer substrate composite in claim 1～3 in described crude oil, and adding dosage is 50g/t～100g/t.
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104676251A (en) * | 2014-12-26 | 2015-06-03 | 北京迪威尔石油天然气技术开发有限公司 | Nano pour point depressant compound for high-wax crude oil pipe transportation |
| CN106281497A (en) * | 2016-08-16 | 2017-01-04 | 上海应用技术学院 | A kind of nano combined binary polymer pour-point depressant and preparation method thereof |
| CN106634916A (en) * | 2017-01-19 | 2017-05-10 | 北京奥友兴业科技发展有限公司 | Preparation method of novel water-based viscosity and pour point reducer |
| CN107448777A (en) * | 2016-05-31 | 2017-12-08 | 中国科学院化学研究所 | A kind of glutinous pour point reducer composition of crude oil nanometer drop and its preparation method and application |
| CN108977187A (en) * | 2018-08-23 | 2018-12-11 | 北京宝辰联合科技股份有限公司 | A kind of composite crude oil thinner and preparation method thereof |
| CN112608726A (en) * | 2020-11-30 | 2021-04-06 | 德仕能源科技集团股份有限公司 | Novel EVA modified pour point depressant, and preparation method and application thereof |
| CN113402724A (en) * | 2021-06-11 | 2021-09-17 | 东北石油大学 | Preparation method of nano composite pour point depressant |
| CN114183107A (en) * | 2021-12-03 | 2022-03-15 | 中国石油大学(华东) | Environment-friendly method for reducing viscosity and cold recovery of thick oil |
| CN114479965A (en) * | 2022-01-18 | 2022-05-13 | 上海应用技术大学 | Composite nano diesel oil pour point depressant and preparation method and application thereof |
| CN115960597A (en) * | 2023-03-16 | 2023-04-14 | 德仕能源科技集团股份有限公司 | Compound pour point depressant for crude oil and preparation method thereof |
| CN116855285A (en) * | 2022-03-28 | 2023-10-10 | 中国石油天然气集团有限公司 | Ether ester grafted modified graphene oxide crude oil pour point depressant, and preparation method and application thereof |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104676251A (en) * | 2014-12-26 | 2015-06-03 | 北京迪威尔石油天然气技术开发有限公司 | Nano pour point depressant compound for high-wax crude oil pipe transportation |
| CN107448777A (en) * | 2016-05-31 | 2017-12-08 | 中国科学院化学研究所 | A kind of glutinous pour point reducer composition of crude oil nanometer drop and its preparation method and application |
| CN107448777B (en) * | 2016-05-31 | 2019-05-28 | 中国科学院化学研究所 | Glutinous pour point reducer composition and its preparation method and application drops in a kind of crude oil nanometer |
| CN106281497A (en) * | 2016-08-16 | 2017-01-04 | 上海应用技术学院 | A kind of nano combined binary polymer pour-point depressant and preparation method thereof |
| CN106634916A (en) * | 2017-01-19 | 2017-05-10 | 北京奥友兴业科技发展有限公司 | Preparation method of novel water-based viscosity and pour point reducer |
| CN108977187A (en) * | 2018-08-23 | 2018-12-11 | 北京宝辰联合科技股份有限公司 | A kind of composite crude oil thinner and preparation method thereof |
| CN112608726A (en) * | 2020-11-30 | 2021-04-06 | 德仕能源科技集团股份有限公司 | Novel EVA modified pour point depressant, and preparation method and application thereof |
| CN113402724A (en) * | 2021-06-11 | 2021-09-17 | 东北石油大学 | Preparation method of nano composite pour point depressant |
| CN114183107A (en) * | 2021-12-03 | 2022-03-15 | 中国石油大学(华东) | Environment-friendly method for reducing viscosity and cold recovery of thick oil |
| CN114479965A (en) * | 2022-01-18 | 2022-05-13 | 上海应用技术大学 | Composite nano diesel oil pour point depressant and preparation method and application thereof |
| CN116855285A (en) * | 2022-03-28 | 2023-10-10 | 中国石油天然气集团有限公司 | Ether ester grafted modified graphene oxide crude oil pour point depressant, and preparation method and application thereof |
| CN115960597A (en) * | 2023-03-16 | 2023-04-14 | 德仕能源科技集团股份有限公司 | Compound pour point depressant for crude oil and preparation method thereof |
| CN115960597B (en) * | 2023-03-16 | 2023-08-15 | 德仕能源科技集团股份有限公司 | Compound crude oil pour point depressant and preparation method thereof |
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