CN107435816A - It is a kind of to make easily to coagulate the glutinous integrated conduct method of high tack coat product pour point depression drop - Google Patents
It is a kind of to make easily to coagulate the glutinous integrated conduct method of high tack coat product pour point depression drop Download PDFInfo
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- CN107435816A CN107435816A CN201610361753.4A CN201610361753A CN107435816A CN 107435816 A CN107435816 A CN 107435816A CN 201610361753 A CN201610361753 A CN 201610361753A CN 107435816 A CN107435816 A CN 107435816A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D1/00—Pipe-line systems
- F17D1/08—Pipe-line systems for liquids or viscous products
- F17D1/16—Facilitating the conveyance of liquids or effecting the conveyance of viscous products by modification of their viscosity
-
- 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
- C10G53/00—Treatment of hydrocarbon oils, in the absence of hydrogen, by two or more refining processes
- C10G53/02—Treatment of hydrocarbon oils, in the absence of hydrogen, by two or more refining processes plural serial stages only
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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
- C10G2300/20—Characteristics of the feedstock or the products
- C10G2300/30—Physical properties of feedstocks or products
- C10G2300/302—Viscosity
-
- 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
- C10G2300/20—Characteristics of the feedstock or the products
- C10G2300/30—Physical properties of feedstocks or products
- C10G2300/304—Pour point, cloud point, cold flow properties
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- Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Health & Medical Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Public Health (AREA)
- Water Supply & Treatment (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Lubricants (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
Make easily to coagulate the glutinous integrated conduct method of high tack coat product pour point depression drop the invention provides a kind of, this method comprises the following steps：(1) easily coagulated in high tack coat product after addition pour-point depressant to described, then it is heat-treated, obtain adding agent oil product A；(2) high shear agitation is carried out to described plus agent oil product A, obtains the oil product B after high shear agitation；(3) apply the electric field of some strength to the oil product B, the condensation point and viscosity for easily coagulating high tack coat product is reduced simultaneously to realize.This method energy consumption provided by the invention is low, can realize that oil product pour point depression, drop are glutinous simultaneously, and then can improve the fluid ability of oil product at low temperature.
Description
Technical field
Make easily to coagulate the glutinous integrated conduct method of high tack coat product pour point depression drop the present invention relates to a kind of, belong to the glutinous skill of oil product pour point depression drop
Art field.
Background technology
China and overseas oil field abound with the contour glutinous crude oil of high wax content oil, and it is easily solidifying high glutinous under normal temperature or even low temperature, tool
There is poor mobility, this is well known in the art.Reduce crude oil condensation point, reduce crude oil viscosity to improve its mobility,
It is oil extraction and manages the problem that defeated process faces.For waxy crude oil, when temperature is less than wax precipitation point, begun with oil
Part wax separates out, and as temperature reduces, wax progressively combines to form tridimensional network in oil, hinders its flowing, causes its apparent
Viscosity improves constantly.For asphaltic crude, the asphalitine in oil stream reduces with temperature constantly to be separated out, easy shape
Into small asphaltene particles, increase apparent viscosity.In addition to wax crystalline substance, asphalitine separate out at a lower temperature, part wax is brilliant, drip
Blue or green matter reduces to form deposit with temperature, causes tube wall incrustation, or even the danger such as deposit blocks in pipe, solidifying pipe occur, this
Pipeline Crude Oil Transportation can be adversely affected.Therefore, research reduces condensation point of crude oil improves its mobility at low temperature simultaneously
New technology, and be applied in pipeline transportation, realize the energy-saving of pipeline while for ensureing pipe safety operation
Tool is of great significance.
In order to improve the mobility during easily solidifying high glutinous Crude Oil Transportation, conventional heated transportation plus agent conveying, dilute conveying is mixed
Etc. technology, but there is the shortcomings that certain and deficiency in these technologies, and in order to realize easily solidifying high glutinous Crude Oil Transportation process simultaneously
The glutinous target of pour point depression, drop, it usually needs with reference to two or more technology, this causes oil transportation high energy consumption, oil transportation economic loss
Greatly.
The content of the invention
In order to solve the shortcomings that above-mentioned and deficiency, make easily to coagulate high tack coat product pour point depression drop it is an object of the invention to provide one kind
Glutinous integrated conduct method.
To reach above-mentioned purpose, present invention offer is a kind of to be made easily to coagulate the glutinous integrated conduct method of high tack coat product pour point depression drop, should
Method comprises the following steps：
(1) easily coagulated in high tack coat product after addition pour-point depressant to described, then it is heat-treated, obtain adding agent oil product A；
(2) high shear agitation is carried out to described plus agent oil product A, obtains the oil product B after high shear agitation；
(3) apply the electric field of some strength to the oil product B, the condensation point for easily coagulating high tack coat product is reduced simultaneously to realize
And viscosity.
According to method of the present invention, it is preferable that the easily solidifying high tack coat product include waxy crude oil, viscous crude and its mixing
Crude oil；
It is highly preferred that the easily solidifying high tack coat product are waxy crude oil, wherein, the paraffin content of the waxy crude oil is higher than
2.5wt% (paraffin content be by the gross weight of waxy crude oil be 100% on the basis of be calculated), relative dielectric constant
For 1.8-2.7.
According to method of the present invention, the pour-point depressant mechanism of action is to change the form and structure that wax is brilliant in waxy oil, right
Depression effeCt can not be played in the crude oil of the very low not even content of wax of paraffin content.
According to method of the present invention, it is preferable that the pour-point depressant is the condensation point for easily to coagulate high tack coat product after adding
At least reduce by 5 DEG C of pour-point depressant；
It is highly preferred that the pour-point depressant is the pour point depression for causing the condensation point for easily coagulating high tack coat product at least to reduce by 10 DEG C after adding
Agent.
According to method of the present invention, according to piped oil plus agent rower, there is depression effeCt to refer to add agent heat treatment
Afterwards, condensation point reduces by more than 5 DEG C, and good depression effeCt refers to, condensation point at least reduces by 10 DEG C.
According to method of the present invention, the pour-point depressant used in the present invention is the conventional pour-point depressant that this area uses, and this
Specific requirement is not made in invention to pour-point depressant, and those skilled in the art can need to select or prepare suitable pour-point depressant according to scene
For the present invention, as long as can realize that the present invention can be so that easily coagulating the condensation point of high tack coat product at least reduces by 5 DEG C after being added into
；In the preferred embodiment of the present invention, the pour-point depressant includes ethylene-vinyl acetate copolymer (EVA) and its is modified
Thing, poly- (methyl) acrylate copolymer, copolymer-maleic anhydride, polymer with nitrogen etc..In addition, pour-point depressant is necessary before use
Be diluted processing, this be well known to a person skilled in the art.
According to method of the present invention, it is preferable that the addition of the pour-point depressant is 30ppm to 200ppm.
According to method of the present invention, it is preferable that the temperature of the heat treatment is 30 DEG C to 70 DEG C, and heat treatment time is
30min-2h；
It is highly preferred that the temperature of the heat treatment is 40 DEG C to 70 DEG C.
According to method of the present invention, the heat treatment is easily to coagulate under the temperature conditionss of more than high tack coat product wax precipitation point
Easily coagulate high tack coat product to this to be heat-treated, it is generally the case that the temperature of the heat treatment is 30 DEG C to 70 DEG C, and preferably 40 DEG C extremely
70℃。
According to method of the present invention, it is preferable that the stir speed (S.S.) of the high shear agitation be 800rpm extremely
24000rpm, whipping temp are adding between agent oil product A condensation point temperature and the wax precipitation point temperature for adding agent oil product A, and mixing time is
1min to 20min.
According to method of the present invention, the agitating paddle used during the high shear agitation can be churning up the raw oil
The conventional slurry that process uses, in the preferred embodiment of the present invention, slurry used is the oblique oar of 45 ° of four leaf or double leaf plate oar.
According to method of the present invention, it is preferable that the electric field is DC electric field or impulse electric field, and the electric-field intensity is
0.1kV/mm to 2.4kV/mm, more preferably 0.8kV/mm are to 1.8kV/mm.
According to method of the present invention, it is preferable that the number of the electric field is 2 to 4.
According to method of the present invention, it is preferable that the time interval of the impulse electric field is 1s to 30s.
The invention provides a kind of reduction crude oil etc. the good liquid of insulating properties (easily coagulating high tack coat product) condensation point to reduce simultaneously
Its viscosity, to improve the method for its mobility.This method includes adding suitable pour-point depressant into fluid, and at low temperature at a high speed
After shear agitation, the electric field of some strength is loaded, to reduce the condensation point of the fluid and viscosity.Wherein, suitable pour point depression is selected
The electric field of agent, high shear agitation and application some strength is the good liquid of the insulating properties such as crude oil while produces desired drop
Solidifying, thinning effect, necessary to improving its mobility.The present invention is to needing to reduce condensation point while needing to improve the stream of mobility
The defeated tool of body pipe has very important significance, and more specifically, reduces condensation point for pipeline crude oil, reduction viscosity provides a kind of energy
The very low important method of consumption.
The invention provides one kind by adding suitable pour-point depressant, and high shear agitation at low temperature into fluid
Afterwards, the electric field of some strength is loaded, to reduce the condensation point of the fluid and viscosity, improves the method for its mobility.
According to method of the present invention, after the condensation point that suitable pour-point depressant reduces fluid is added into crude oil, by fluid
High shear agitation is undergone, then by loading the electric field of some strength to fluid, you can to reduce the viscosity of fluid, improve fluid
Mobility, prevent in fluid delivery process the particle sedimentation aggregation caused by temperature drop to cause conveying energy consumption occur significantly to carry
The problems such as pipe, is even coagulated in high, blocking.
In order to obtain while reduce the technique effect of fluid condensation point and viscosity it may first have to carry out pour point depression according to experimental liquid
Agent action effect is evaluated, and after selecting suitable pour-point depressant experimental liquid condensation point is reduced, and after carrying out high shear agitation, then
Agent experimental liquid is added to stick by the electric field action several seconds to Experimental Flowing Object application about 0.1kV/mm to about 2.4kV/mm intensity
Degree reduces.For example, plus agent post-processing temperature can be in the range of about 40 DEG C to about 80 DEG C, stir speed (S.S.) can be in about 800rpm to about
In the range of 24000rpm, the high speed shear time can be in the range of about 1min to about 20min, and electric-field intensity can be in about 0.8kV/
In the range of mm to about 1.8kV/mm.The selection of particular value can reduce according to species, the condensation point of Experimental Flowing Object within the range
Expected degree, the expected degree that viscosity reduces, the temperature of fluid is estimated obtains.Self-evidently, if plus agent species do not conform to
Suitable plus underdosage, high speed shear speed is too low, the high speed shear time is too short or application electric-field intensity is inadequate, as a result would is that
Condensation point, viscosity do not have significant changes, or only realize pour point depression, drop it is glutinous in one kind, the glutinous mesh of pour point depression, drop can not be reached simultaneously
Mark.
As noted before, the condensation point range of decrease is critically important after fluid adds agent, wherein adding suitable pour-point depressant, is not refered in particular to
Certain a kind of or a certain pour-point depressant, but refer to improve the chemical reagent of liquid flow denaturation, it is necessary to carry out for Experimental Flowing Object
Screening or synthesis, the chemical reagent, which screens, to be included for every kind of crude oil selection or synthesis pour-point depressant, it is determined that suitably adding agent bar
Part, described plus agent condition includes plus dosage and optimal plus agent temperature.In the preferred embodiment of the present invention, should plus dosage can be
In the range of about 30ppm to about 200ppm, high shear agitation speed and shear time, electric field action intensity are for adding agent fluid
It is no less important by being dropped after electric field glutinous.High speed shear speed can suitably in about 800rpm to about 24000rpm scope
Interior, shear time can be suitably in the range of about 1min to about 20min, and electric-field intensity can be in about 0.8kV/mm to about 1.8kV/
In the range of mm.
According to method of the present invention, after suitable pour-point depressant is added into Experimental Flowing Object, the condensation point of fluid goes out
Now drop, and high shear agitation is carried out in the range of above-mentioned shear rate and mixing time, it is ensured that pour-point depressant is in Experimental Flowing Object
In it is dispersed, while avoid particle aggregation therein be more than micron-sized larger particles, then in above-mentioned field strength range
Apply electric field, the particle such as wax crystalline substance in Experimental Flowing Object assembles bunchiness along direction of an electric field.The string-like particle chain after electric field is departed from
Gradually scattered, viscosity increases with the time returns back to initial value, and viscosity that may be time-consuming more than 24 hours returns back to initial value.
According to method of the present invention, the electric field used can be high-voltage dc or impulse electric field.When application arteries and veins
When rushing electric field, interval time is in the range of about 1s to 30s, such as pulse voltage interval time is 10s.Wherein, direction of an electric field
Fluid flow direction is not limited to, can be selected according to different fluid, electric field loading direction can, phase identical with fluid flow direction
Anti- or other directions, for example, with fluid flow direction angle at 45 °.
According to method of the present invention, that Experimental Flowing Object receives plus agent species plus dosage, electric-field intensity and duration
Type depending on fluid is such as waxy crude oil, asphaltic crude, mixed crude, product oil.Have determined that in through adding agent, electricity
Before processing fluid condensation point is higher, viscosity is bigger, through plus agent, high shear agitation, electric field treatment after condensation point, glutinous
It is bigger to spend the range of decrease.
According to method of the present invention, in a preferred embodiment in accordance with this invention, stirred using high speed agitator
Mix and add agent fluid, then by caused electric field between electrode, typically, required electrode is 3 to 5, it is ensured that it is 2 to produce electric field
To 4.Crude oil can contact with electrode, by electrode network, the direction of loading electric field can also be made to be not parallel to flow direction, no
Directly contacted with fluid；The agitating paddle that the high shear agitation process uses is the oblique oar of 45 ° of four leaf or double leaf plate oar.
Improve the mobility for easily coagulating high tack coat product under low temperature to realize simultaneously, the present invention proposes easily solidifying high tack coat product and adds agent
After pour point depression, high-speed stirred, then apply the new method of high voltage electric field processing improvement oil product mobility.This method energy provided by the invention
Consume low, can realize that oil product pour point depression, drop are glutinous simultaneously, and then the fluid ability of oil product at low temperature can be improved.
Brief description of the drawings
Fig. 1 makes easily to coagulate the glutinous integrated conduct method technological process signal of high tack coat product pour point depression drop to be provided by the present invention
Figure；
Fig. 2 be waxy crude oil that the embodiment of the present invention 1 provides under different electric-field intensity, it drops the variation relation figure of glutinous rate
(20℃)；
Fig. 3 be waxy crude oil that the embodiment of the present invention 1 provides under different electric-field intensity, it drops the variation relation figure of glutinous rate
(15℃)；
Fig. 4 be waxy crude oil that the embodiment of the present invention 2 provides under different electric-field intensity, it drops the variation relation figure of glutinous rate
(15 DEG C, 0rpm)；
Fig. 5 be waxy crude oil that the embodiment of the present invention 2 provides under different electric-field intensity, it drops the variation relation figure of glutinous rate
(15 DEG C, 1000rpm)；
Fig. 6 be waxy crude oil that the embodiment of the present invention 2 provides under different electric-field intensity, it drops the variation relation figure of glutinous rate
(15 DEG C, 8000rpm)；
Fig. 7 be waxy crude oil that the embodiment of the present invention 2 provides under different electric-field intensity, it drops the variation relation figure of glutinous rate
(15 DEG C, 21000rpm).
Embodiment
In order to which technical characteristic, purpose and the beneficial effect of the present invention is more clearly understood, in conjunction with detail below
Embodiment and Figure of description are described further below to technical scheme progress, but it is not intended that can to of the invention
The restriction of practical range.
Embodiment 1
Present embodiments providing one kind makes easily to coagulate the glutinous integrated conduct method of high tack coat product (waxy crude oil) pour point depression drop, the party
The process flow diagram of method is as shown in figure 1, it comprises the following steps：
From 100g waxy crude oil (paraffin content 11.4wt%, relative dielectric constant 2.1), its condensation point is 18 DEG C of (analysis
40 DEG C of wax point), from a kind of pour-point depressant (ethylene-vinyl acetate copolymer, EVA) and (26 DEG C) are added at ambient temperature
Enter in waxy crude oil, wherein, the mass concentration of pour-point depressant is 1%, adds 0.7g (adding agent concentration to be 70ppm), obtains plus agent is oily
Product A；
After 60 DEG C are heat-treated 1h, the condensation point for adding agent oil product A is 8 DEG C, and wax precipitation point is still 40 DEG C, is down to and requires temperature (20
DEG C and 15 DEG C, i.e. high shear agitation temperature) after, high speed shear 2min, shear rate 8000rpm, obtain through high speed shear
Oil product B after stirring；
After the electric field for applying some strength to oil product B again, its mass flow is tested using tube type rheometer；Experiment temperature
Degree, electric-field intensity and mass flow result are as shown in table 1.Thus the drop obtained under different temperatures, different field strength sticks rate, its result
As shown in Fig. 2 and Fig. 3.Wherein, it is as shown in Equation 1 that glutinous rate calculation formula drops.
In formula 1：
ε --- the glutinous rate of drop, %；
Q0--- without electric field treatment plus agent oil quality flow, g/min；
Q1--- after electric field treatment plus agent oil quality flow, g/min；
Table 1
From figure 2 it can be seen that oil product A obtains oil product B after 8000rpm high speed shears 2min, under the conditions of 20 DEG C
Electric field modification is carried out, with the increase of electric-field intensity, glutinous rate is dropped and incrementally increases, under 1.4kV/mm, it is reachable to drop glutinous rate
39.7%, there is good thinning effect, while oil product B condensation point is 8 DEG C, far below 18 DEG C oily of condensation point of agent is not added, thus
It can be seen that method of the invention has reached the glutinous technique effect of pour point depression, drop simultaneously.
From figure 3, it can be seen that oil product A obtains oil product B after 8000rpm high speed shears 2min, oil product B is in 15 DEG C of bars
Electric field modification is carried out under part, with the increase of electric-field intensity, glutinous rate is dropped and incrementally increases, under 1.6kV/mm, dropping glutinous rate can
Up to 40.1%, there is good thinning effect, while oil product B condensation point is 8 DEG C, far below not plus agent oil 18 DEG C of condensation point, by
This is visible, and method of the invention has reached the glutinous technique effect of pour point depression, drop simultaneously.
Embodiment 2
Present embodiments providing one kind makes easily to coagulate the glutinous integrated conduct method of high tack coat product (waxy crude oil) pour point depression drop, the party
The process flow diagram of method is as shown in figure 1, it comprises the following steps：
From 100g waxy crude oil (paraffin content 11.4wt%, relative dielectric constant 2.1), its condensation point is 18 DEG C of (analysis
40 DEG C of wax point), from a kind of pour-point depressant (ethylene-vinyl acetate copolymer, EVA) and (26 DEG C) are added at ambient temperature
Enter in waxy crude oil, wherein, the mass concentration of pour-point depressant is 1%, adds 0.7g (adding agent concentration to be 70ppm), obtains plus agent is oily
Product A；
After 60 DEG C are heat-treated 1h, the condensation point for adding agent oil product A is 8 DEG C, and wax precipitation point is still 40 DEG C, is down to and requires 15 DEG C of temperature
After (i.e. high shear agitation temperature), the high speed shear time is 2min, shear rate be respectively 0rpm, 1000rpm,
8000rpm, 21000rpm, obtain the oil product B after high shear agitation；
After the electric field for applying some strength to oil product B again, its mass flow is tested using tube type rheometer；Stirring speed
Rate, electric-field intensity and mass flow result are as shown in table 2.Thus oil product A is obtained after different shear rate high-speed stirreds
Oil product B, shown in result as Fig. 4-Fig. 7 by electric field treatment.
The glutinous rate calculation formula of drop is as shown in above-mentioned formula 1.
Table 2
Figure 4, it is seen that when oil product A is without high speed shear, it drops glutinous rate after electric field treatment and is less than 6%, base
This does not have thinning effect；And from figure 5 it can be seen that after 1000rpm high-speed stirreds, declining glutinous rate in each field strength has significantly
Lifting, under 1.6kV/mm, drop glutinous rate and improve 24.4% compared with without the glutinous rate of drop under high speed shear (0rpm) processing.From Fig. 6
In as can be seen that with the further lifting of shearing rate, after 8000rpm high-speed stirreds, the drop under 1.6kV/mm sticks oil product A
Rate improves 34.3% compared with without high speed shear (0rpm).It can be seen from figure 7 that oil product A is in very high shearing rate
After 21000rpm stirrings, the drop under 1.6kV/mm sticks rate and improves 55.5% compared with without high speed shear (0rpm), achieves very
Good thinning effect, while oil pour point is 8 DEG C after handling, far below not plus 18 DEG C of agent oil condensation point, it can be seen that, the present invention carries
The method of confession has reached while has dropped the glutinous, purpose of pour point depression.
Claims (10)
1. a kind of make easily to coagulate the glutinous integrated conduct method of high tack coat product pour point depression drop, it is characterised in that this method comprises the following steps：
(1) easily coagulated in high tack coat product after addition pour-point depressant to described, then it is heat-treated, obtain adding agent oil product A；
(2) high shear agitation is carried out to described plus agent oil product A, obtains the oil product B after high shear agitation；
(3) to the electric field of oil product B application some strengths, the condensation point for easily coagulating high tack coat product is reduced simultaneously and is sticked to realize
Degree.
2. according to the method for claim 1, it is characterised in that it is described easily coagulate high tack coat product include waxy crude oil, viscous crude and
Its mixed crude；
Preferably, the easily solidifying high tack coat product are waxy crude oil, wherein, the paraffin content of the waxy crude oil is higher than 2.5wt%, relatively
Dielectric constant is 1.8-2.7.
3. method according to claim 1 or 2, it is characterised in that the pour-point depressant is to cause easily to coagulate high tack coat after adding
The condensation point of product at least reduces by 5 DEG C of pour-point depressant；
Preferably, the pour-point depressant is the pour-point depressant for causing the condensation point for easily coagulating high tack coat product at least to reduce by 10 DEG C after adding.
4. according to the method described in claim any one of 1-3, it is characterised in that the addition of the pour-point depressant be 30ppm extremely
200ppm。
5. according to the method for claim 1, it is characterised in that the temperature of the heat treatment is 30 DEG C to 70 DEG C, heat treatment
Time is 30min-2h；
Preferably, the temperature of the heat treatment is 40 DEG C to 70 DEG C.
6. according to the method for claim 1, it is characterised in that the stir speed (S.S.) of the high shear agitation be 800rpm extremely
24000rpm, whipping temp are adding between agent oil product A condensation point temperature and the wax precipitation point temperature for adding agent oil product A, and mixing time is
1min to 20min.
7. according to the method for claim 1, it is characterised in that the electric field is DC electric field or impulse electric field, the electric field
Intensity is 0.1kV/mm to 2.4kV/mm.
8. according to the method for claim 7, it is characterised in that the electric-field intensity is 0.8kV/mm to 1.8kV/mm.
9. the method according to claim 1 or 8, it is characterised in that the number of the electric field is 2 to 4.
10. according to the method for claim 7, it is characterised in that the time interval of the impulse electric field is 1s to 30s.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108624314A (en) * | 2018-03-31 | 2018-10-09 | 青岛大学 | A method of preparing viscous crude pour-point depressant by raw material of cephalin |
| CN108690654A (en) * | 2018-05-28 | 2018-10-23 | 中国石油大学(北京) | A kind of integrated conduct method improving crude oil fluidity using electric field and stirring |
| CN109486511A (en) * | 2018-12-26 | 2019-03-19 | 中国石油大学(北京) | It reduces, the method and device of test crude oil yield stress |
Citations (3)
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| CN108624314A (en) * | 2018-03-31 | 2018-10-09 | 青岛大学 | A method of preparing viscous crude pour-point depressant by raw material of cephalin |
| CN108624314B (en) * | 2018-03-31 | 2021-10-08 | 青岛大学 | Method for preparing thickened oil pour point depressant by taking cephalin as raw material |
| CN108690654A (en) * | 2018-05-28 | 2018-10-23 | 中国石油大学(北京) | A kind of integrated conduct method improving crude oil fluidity using electric field and stirring |
| CN108690654B (en) * | 2018-05-28 | 2019-12-13 | 中国石油大学(北京) | Comprehensive treatment method for improving flow property of crude oil by using electric field and stirring |
| CN109486511A (en) * | 2018-12-26 | 2019-03-19 | 中国石油大学(北京) | It reduces, the method and device of test crude oil yield stress |
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