CN104565824B - A kind of long-distance pipe normal temperature mixes the method for the auspicious crude oil of defeated agate - Google Patents
A kind of long-distance pipe normal temperature mixes the method for the auspicious crude oil of defeated agate Download PDFInfo
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- CN104565824B CN104565824B CN201410801914.8A CN201410801914A CN104565824B CN 104565824 B CN104565824 B CN 104565824B CN 201410801914 A CN201410801914 A CN 201410801914A CN 104565824 B CN104565824 B CN 104565824B
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- 239000010779 crude oil Substances 0.000 title claims abstract description 46
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 title claims abstract description 30
- 238000000034 method Methods 0.000 title claims abstract description 19
- 238000002156 mixing Methods 0.000 claims abstract description 46
- 239000000203 mixture Substances 0.000 claims abstract description 8
- 239000010426 asphalt Substances 0.000 claims abstract description 4
- 239000000084 colloidal system Substances 0.000 claims abstract description 4
- 239000003921 oil Substances 0.000 abstract description 21
- 238000012545 processing Methods 0.000 abstract description 5
- 239000007788 liquid Substances 0.000 description 4
- 230000001603 reducing effect Effects 0.000 description 4
- 238000002474 experimental method Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 150000004945 aromatic hydrocarbons Chemical class 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000013517 stratification Methods 0.000 description 1
- 230000036962 time dependent Effects 0.000 description 1
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- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
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Abstract
The present invention relates to petrochemical industry, particularly a kind of long-distance pipe normal temperature mixes the method for the auspicious crude oil of defeated agate.This long-distance pipe normal temperature mixes the method for the auspicious crude oil of defeated agate, it is characterized in that: in the auspicious crude oil of agate, mix wax content is 4.08%, and it is 8.75% that colloid adds asphalt content, and Sulpher content is the crude oil of 1.87%, and density when its 20 DEG C is 0.7-0.9g/cm
3, mixing proportion is 20-40%; The invention provides a kind of method that long-distance pipe normal temperature mixes the auspicious crude oil of defeated agate, operation is simple, different mixing proportions can be chosen according to difference in season, the auspicious former oil viscosity of agate is made to be no more than 350Pa.s, the conveying of cross-region 500Km pipeline can be realized, year quantity delivered can reach more than 1,000 ten thousand tons, and mixes component without the need to being separated, and reduce further conveying cost and processing cost.
Description
Technical field
The present invention relates to petrochemical industry, particularly a kind of long-distance pipe normal temperature mixes the method for the auspicious crude oil of defeated agate.
Background technique
Current, crude oil heavy worldwide, the trend of in poor quality are more and more obvious, the high viscosity of oil product makes it be difficult to exploitation and Cemented filling, in order to reduce cost of material and cost of transportation, how to reduce the viscosity under its normal temperature, realize carrying out the conveying of long-distance pipe normal temperature to the auspicious crude oil of agate, become the problem that current oil refining industry is widely paid close attention to.So a kind of long distance of invention buried pipeline mixes defeated high viscosity heavy crude at normal temperatures--the method for the auspicious crude oil of agate, reduces cost of transportation to the refinery of some processing high viscosity oils and processing cost has very large realistic meaning.
Venezuela's-Ma Rui crude oil is a kind of high sticky, not easily solidifying heavy crude, condensation point <-10 DEG C, colloid+asphalt content reaches 22.1%, its viscosity reaches more than 5000mPa.s 8 DEG C time, higher than more than its condensation point when 20 DEG C (oil temperature is 10 DEG C), its viscosity is to reach more than 4000mPa.s, and when carrying out long distance delivery to it, reducing oil viscosity is the primary problem solved.Its physical property data is in table 1.
The auspicious crude oil property data sheet of table 1 agate
Chinese patent CN1508215A " method of low-cost reducing viscosity of crude oil " discloses a kind of method reducing viscosity of crude by adding aromatic hydrocarbon solvent, although this kind of method reduces former oil viscosity to a certain extent, but it needs separation and recovery when follow-up use, adds somewhat to crude oil processing cost.
Summary of the invention
The present invention, in order to make up the defect of prior art, provides and be a kind ofly convenient to a kind of method that long-distance pipe normal temperature mixes the auspicious crude oil of defeated agate, and the later stage is without the need to separation and recovery.
The present invention is achieved through the following technical solutions:
Long-distance pipe normal temperature mixes a method for the auspicious crude oil of defeated agate, it is characterized in that: in the auspicious crude oil of agate, mix wax content is 4.08%, and it is 8.75% that colloid adds asphalt content, and Sulpher content is the crude oil of 1.87%, and density when its 20 DEG C is 0.7-0.9g/cm
3, mixing proportion is 20-40%.
Mixing proportion of the present invention is the mass percent that the crude oil mixed accounts for the miscella after mixing.
Because the viscosity of oil product and temperature have direct relation, therefore when external temperature changes, mixing proportion also will change thereupon.
When buried temperature is 10-15 DEG C, when being namely in spring, autumn, mixing proportion is 25-35%, and the miscella viscosity after blending is less than or equal to 350mPa.s.
When buried temperature is 20-25 DEG C, namely during summer, mixing proportion is 20-25%, mixes oil viscosity and be less than or equal to 350mPa.s after blending.
When buried temperature is 5-10 DEG C, namely during winter, mixing proportion is 35-40%, and the miscella viscosity after blending is less than or equal to 350mPa.s.
Beneficial effect of the present invention: the invention provides a kind of method that long-distance pipe normal temperature mixes the auspicious crude oil of defeated agate, operation is simple, different mixing proportions can be chosen according to difference in season, the auspicious former oil viscosity of agate is made to be no more than 350Pa.s, the conveying of cross-region 500Km pipeline can be realized, year quantity delivered can reach more than 1,000 ten thousand tons, and mixes component without the need to being separated, and reduce further conveying cost and processing cost.
Accompanying drawing explanation
The viscosity profile of oil product is mixed when accompanying drawing 1 is different mixing proportion.
Embodiment
The invention will be further described to use embodiment below, and described embodiment just for helping skilled in the art to understand the present invention, instead of limits application area of the present invention.
For domestic waxy crude oil, its experience shear history and thermal history all can have an impact to its viscosity.In process of the present invention, first with the relation of shear rate, Measurement and analysis is carried out for the auspicious crude oil of agate and contaminated product (the auspicious crude oil of agate+mix crude oil).Result is as shown in table 2:
The auspicious crude oil of table 2 agate and portion are with the contaminated product viscosity of mixing proportion and shearing rate relation
From above data, no matter be the auspicious crude oil of agate and miscella, its viscosity and the shear rate suffered by it have nothing to do.In addition, by also showing the analysis of the viscosity measurement experiencing the auspicious crude oil of agate and the contaminated product repeatedly heated, the thermal history of its viscosity and its experience has nothing to do.Therefore, in test, no longer consider the impact for measuring crude oil viscosity result of shear rate and heating power history.In addition, the auspicious crude oil of agate and mixing proportion are that the agent viscosity reduction experiment that adds of 10% contaminated product shows, add the DeGrain of agent viscosity reduction.
One, the viscosity of oil product is mixed during different mixing proportion.
In this experiment, utilize high-precision Anton Paar MRC500 flow graph, respectively the 380# fuel oil viscosity under different mixing proportion is measured.This viscosimeter has independent gyro cone-plate rotor structure, when electric machine rotation, rotating disk is rotated thereupon, makes the cone-plate rotor of the liquid in container and liquid upper also rotate simultaneously thereupon.When rotating disk stops operating suddenly, due to the effect of inertia, liquid and rotor will continue to rotate, and owing to being subject to the shearing viscous force effect of liquid, angular velocity will reduce gradually.Under the control of PC, data acquisition module is by the angular velocity of photocell Real-Time Monitoring rotor, and measure the time dependent function of rotor velocity non-contactly, differential solves angular acceleration and tries to achieve fluid viscosity value by mathematical operation.Concrete test data is as following table:
The viscosity of the mixing oil product of the different mixing proportion of table 3
As can be seen from data in upper table, by blending crude oil of the present invention, the average viscosity mixing oil product at identical temperature sharply declines.When oil temperature is 10 DEG C, the auspicious former oil viscosity of agate of non-blending is 4080mPa.s, and the mixed crude of Blend proportion 10% at the same temperature, and viscosity only has 1570mPa.s, and viscosity-reducing rate reaches nearly 260%; When Blend proportion reaches 30%, the viscosity of 10 DEG C then reduces to 376mPa.s.As can be seen here, blending Sandi Light Crude is for the viscosity reducing effect highly significant of Venezuela-Ma Rui crude oil.
Two, the standing experiment of different mixing proportion
Be the auspicious crude oil of agate of 20% and 40% to mixing proportion, sampled by upper, middle and lower respectively, and for draw oil sample and carried out viscosity measurement, survey data is in table 3, table 4.
The mixing oil product of table 4 mixing proportion 20% leaves standstill the survey data of diverse location after 10 days
The mixing oil product of table 5 mixing proportion 40% leaves standstill the survey data of diverse location after 10 days
For the contaminated product product of 20% and 40% Blend proportion, after about 10 days leave standstill, be no matter from the top of container, middle part or bottom sampling, its viscosity test results difference is also little, thus can judge that the stability of contaminated product is still better, not occur obvious stratification.
Certain petroleum pipeline is the oil transport pipeline of matter crude oil and heavy crude in a long distance delivery Middle East, and total length is about 500km, and design throughput is 1000 × 104t/a, will transport to terminal by oil product initial station through a point defeated pumping plant.The design pressure of this petroleum pipeline is 8.0MPa, and outer diameter tube is Φ 711mm.Circuit steel pipe adopts longitudinal submerged arc welded pipe and the spiral seam steel pipe submerged arc two kinds of L450 material, adopt three layers of PE external anti-corrosion layer, according to ground temperature change in season, what employing 20% ~ 40% was different mixes defeated ratio, cross-region 500km successfully carries the auspicious crude oil of agate, year quantity delivered reach more than 1,000 ten thousand tons.
Above-described embodiment is the present invention's preferably specific embodiment; but the present invention is not restricted to the described embodiments; all the other any changes in principle of the present invention, principle, modification, substitute, combination, simplify the substitute mode that all should be equivalence, be included in protection scope of the present invention.
Claims (4)
1. a long-distance pipe normal temperature mixes the method for the auspicious crude oil of defeated agate, it is characterized in that: in the auspicious crude oil of agate, mix wax content is 4.08%, it is 8.75% that colloid adds asphalt content, and Sulpher content is the crude oil of 1.87%, described in mix crude oil 20 DEG C time density be 0.7-0.9g/cm
3, mixing proportion is 20-40%, and described mixing proportion is the mass percent that the crude oil mixed accounts for the miscella after mixing, and the miscella viscosity after blending is less than or equal to 350mPa.s.
2. a kind of long-distance pipe normal temperature according to claim 1 mixes the method for the auspicious crude oil of defeated agate, it is characterized in that: when buried temperature is 10-15 DEG C, mixing proportion is 25-35%, described mixing proportion is the mass percent that the crude oil mixed accounts for the miscella after mixing, and the miscella viscosity after blending is less than or equal to 350mPa.s.
3. a kind of long-distance pipe normal temperature according to claim 1 mixes the method for the auspicious crude oil of defeated agate, it is characterized in that: when buried temperature is 20-25 DEG C, mixing proportion is 20-25%, described mixing proportion is the mass percent that the crude oil mixed accounts for the miscella after mixing, and the miscella viscosity after blending is less than or equal to 350mPa.s.
4. a kind of long-distance pipe normal temperature according to claim 1 mixes the method for the auspicious crude oil of defeated agate, it is characterized in that: when buried temperature is 5-10 DEG C, mixing proportion is 35-40%, described mixing proportion is the mass percent that the crude oil mixed accounts for the miscella after mixing, and the miscella viscosity after blending is less than or equal to 350mPa.s.
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Citations (6)
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| US2356254A (en) * | 1942-10-21 | 1944-08-22 | Petrolite Corp | Process for preventing and/or removing accumulation of solid matter in oil wells, pipelines, and flow lines |
| US3938591A (en) * | 1975-03-07 | 1976-02-17 | Marathon Oil Company | Intermediate fluid systems for long distance oil displacement |
| CN1784482A (en) * | 2003-05-09 | 2006-06-07 | 国际壳牌研究有限公司 | Method of producing a pipelineable blend from a heavy residue of a hydroconversion process |
| JP4257678B2 (en) * | 2002-11-08 | 2009-04-22 | 石油コンビナート高度統合運営技術研究組合 | Sediment suppression method for transporting hydrodesulfurization cracking process residual oil at high temperature for long distances |
| CN102116144A (en) * | 2011-03-08 | 2011-07-06 | 西南石油大学 | Integrated method for thin oil blending, viscosity reduction, extraction and transportation of thickened oil |
| CN103375156A (en) * | 2012-04-26 | 2013-10-30 | 中国石油化工股份有限公司 | Crude oil recovery method |
-
2014
- 2014-12-22 CN CN201410801914.8A patent/CN104565824B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2356254A (en) * | 1942-10-21 | 1944-08-22 | Petrolite Corp | Process for preventing and/or removing accumulation of solid matter in oil wells, pipelines, and flow lines |
| US3938591A (en) * | 1975-03-07 | 1976-02-17 | Marathon Oil Company | Intermediate fluid systems for long distance oil displacement |
| JP4257678B2 (en) * | 2002-11-08 | 2009-04-22 | 石油コンビナート高度統合運営技術研究組合 | Sediment suppression method for transporting hydrodesulfurization cracking process residual oil at high temperature for long distances |
| CN1784482A (en) * | 2003-05-09 | 2006-06-07 | 国际壳牌研究有限公司 | Method of producing a pipelineable blend from a heavy residue of a hydroconversion process |
| CN102116144A (en) * | 2011-03-08 | 2011-07-06 | 西南石油大学 | Integrated method for thin oil blending, viscosity reduction, extraction and transportation of thickened oil |
| CN103375156A (en) * | 2012-04-26 | 2013-10-30 | 中国石油化工股份有限公司 | Crude oil recovery method |
Non-Patent Citations (1)
| Title |
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| 超稠原油掺轻油长距离管道输送工艺技术研究;孙国华,孙军峰;《油气田地面工程》;20091231;第28卷(第12期);第12页左栏第6行-第13页右栏第9行 * |
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Denomination of invention: A method for mixing and transporting marei crude oil at room temperature in long-distance pipeline Effective date of registration: 20211221 Granted publication date: 20160302 Pledgee: Industrial and Commercial Bank of China Limited Dongming sub branch Pledgor: SHANDONG DONGMING PETROLEUM & CHEMICAL GROUP CO.,LTD. Registration number: Y2021980015749 |
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Denomination of invention: A Method of Long distance Pipeline Blending with MARI Crude Oil at Normal Temperature Effective date of registration: 20221222 Granted publication date: 20160302 Pledgee: Industrial and Commercial Bank of China Limited Dongming sub branch Pledgor: SHANDONG DONGMING PETROLEUM & CHEMICAL GROUP CO.,LTD. Registration number: Y2022980028541 |
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Date of cancellation: 20231228 Granted publication date: 20160302 Pledgee: Industrial and Commercial Bank of China Limited Dongming sub branch Pledgor: SHANDONG DONGMING PETROLEUM & CHEMICAL GROUP CO.,LTD. Registration number: Y2022980028541 |