CN107435816B - 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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- CN107435816B CN107435816B CN201610361753.4A CN201610361753A CN107435816B CN 107435816 B CN107435816 B CN 107435816B CN 201610361753 A CN201610361753 A CN 201610361753A CN 107435816 B CN107435816 B CN 107435816B
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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
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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
- 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)
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Abstract
Make easily to coagulate the glutinous integrated conduct method of high tack coat product pour point depression drop the present invention provides a kind of, method includes the following steps: (1) is easily coagulated in high tack coat product after addition pour-point depressant to described, then it is heat-treated, obtains 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 to realize while reduce the condensation point and viscosity for easily coagulating high tack coat product.Low energy consumption for this method provided by the invention, it is glutinous to can be achieved at the same time oil product pour point depression, drop, 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, belongs to oil product pour point depression and drop glutinous skill
Art field.
Background technique
China and overseas oil field abound with the contour glutinous crude oil of high wax content oil, easily solidifying high glutinous under room 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 the problem that the defeated process of pipe faces.For waxy crude oil, when temperature is lower than wax precipitation point, begun in oil
Part wax is precipitated, and as temperature reduces, wax gradually combines and forms tridimensional network in oil, hinders its flowing, causes it apparent
Viscosity is continuously improved.For asphaltic crude, the asphalitine in oil stream is reduced with temperature to be constantly precipitated, easy shape
At small asphaltene particles, increase apparent viscosity.Other than wax crystalline substance, asphalitine are precipitated at a lower temperature, part wax is brilliant, drips
Green matter reduces to form deposit with temperature, leads to tube wall incrustation, or even will appear the danger such as deposit blocking in pipe, solidifying pipe, 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
It has a very important significance.
In order to improve the mobility during easily solidifying high glutinous Crude Oil Transportation, dilute conveying is mixed in common heated transportation plus agent conveying
Etc. technologies, but these technologies have some disadvantages and insufficient, 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 in conjunction with two or more technology, this leads to oil transportation energy consumption height, oil transportation economic loss
Greatly.
Summary of the invention
In order to solve the above shortcomings and deficiencies, make easily to coagulate high tack coat product pour point depression drop the purpose of the present invention is to provide one kind
Glutinous integrated conduct method.
In order to achieve the above objectives, the present invention provide it is a kind of make easily to coagulate the glutinous integrated conduct method of high tack coat product pour point depression drop, should
Method the following steps are included:
(1) it is 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 to realize while reduce the condensation point for easily coagulating high tack coat product
And viscosity.
Method according to the present invention, it is preferable that described easily to coagulate high tack coat product include waxy crude oil, viscous crude and its mixing
Crude oil；
It is highly preferred that described coagulate high tack coat product easily for waxy crude oil, wherein the paraffin content of the waxy crude oil is higher than
2.5wt% (paraffin content be by the total weight of waxy crude oil be 100% on the basis of be calculated), relative dielectric constant
For 1.8-2.7.
Method according to the present invention, the pour-point depressant mechanism of action is to change the form and structure of wax crystalline substance in waxy oil, right
It is very low in paraffin content or even crude oil of the not content of wax can not play depression effeCt.
Method according to the present invention, it is preferable that the pour-point depressant is to make the condensation point for easily coagulating high tack coat product after being added
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 making the condensation point for easily coagulating high tack coat product at least and reducing by 10 DEG C after being added
Agent.
There is depression effeCt to refer to and add agent heat treatment according to piped oil plus agent rower for method according to the present invention
Afterwards, condensation point reduces by 5 DEG C or more, and good depression effeCt refers to, condensation point at least reduces by 10 DEG C.
Method according to the present invention, pour-point depressant used in the present invention is the conventional pour-point depressant that uses of this field, and this
Invention does not make specific requirement to pour-point depressant, and those skilled in the art can need to select or prepare suitable pour-point depressant according to scene
To be used for the present invention, as long as can be realized after the present invention is added into can make the condensation point for easily coagulating high tack coat product at least reduce by 5 DEG C
?；In the preferred embodiment of the present invention, which includes ethylene-vinyl acetate copolymer (EVA) and its is modified
Object, poly- (methyl) acrylate copolymer, copolymer-maleic anhydride, polymer with nitrogen etc..In addition, pour-point depressant is using preceding necessary
It is diluted processing, this is well known to those skilled in the art.
Method according to the present invention, it is preferable that the additional amount of the pour-point depressant is 30ppm to 200ppm.
Method according to 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.
Method according to the present invention, the heat treatment is under the conditions of easily coagulating the temperature of high tack coat product wax precipitation point or more
It easily coagulates 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℃。
Method according to the present invention, it is preferable that the stirring rate of the high shear agitation be 800rpm extremely
24000rpm, whipping temp the pour point temperature for adding agent oil product A and add agent oil product A wax precipitation point temperature between, mixing time is
1min to 20min.
Method according to the present invention, agitating paddle used in the high shear agitation process 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 paddle of 45 ° of four leaf or double leaf plate paddle.
Method according to the present invention, it is preferable that the electric field is DC electric field or impulse electric field, which is
0.1kV/mm to 2.4kV/mm, more preferably 0.8kV/mm are to 1.8kV/mm.
Method according to the present invention, it is preferable that the number of the electric field is 2 to 4.
Method according to the present invention, it is preferable that the time interval of the impulse electric field is 1s to 30s.
The present invention provides a kind of good liquid of insulating properties such as reduction crude oil (Yi Ninggao tack coat product) condensation point, simultaneously reduce
Its viscosity, the method to improve its mobility.This method include suitable pour-point depressant is added into fluid, and at low temperature high speed
After shear agitation, the electric field of some strength is loaded, to reduce the condensation point and viscosity of the fluid.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 generating desired drop
Solidifying, thinning effect, to improve necessary to its mobility.The present invention is to needing to reduce condensation point while needing to be improved 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
Consume very low important method.
The present invention provides one kind by the way that suitable pour-point depressant is added into fluid, and high shear agitation at low temperature
Afterwards, the electric field of some strength is loaded, to reduce the condensation point and viscosity of the fluid, improves the method for its mobility.
Method according to the present invention, after the condensation point that suitable pour-point depressant reduces fluid is added into crude oil, by fluid
Undergo high shear agitation, then the electric field by loading some strength to fluid, it can reduce the viscosity of fluid, improve fluid
Mobility, prevent in fluid delivery process the sedimentation aggregation of the particle due to caused by temperature drop to cause conveying energy consumption occur significantly to mention
The problems such as pipe, is even coagulated in high, blocking.
In order to obtain while reducing the technical effect of fluid condensation point and viscosity it may first have to carry out pour point depression according to experimental liquid
The evaluation of agent function and effect is selected and makes the reduction of experimental liquid condensation point after suitable pour-point depressant, and after carrying out high shear agitation, then
Made by the electric field action several seconds for applying about 0.1kV/mm to about 2.4kV/mm intensity to Experimental Flowing Object plus agent experimental liquid is glutinous
Degree reduces.For example, plus agent post-processing temperature can be in the range of about 40 DEG C to about 80 DEG C, stirring rate 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 strength can be in about 0.8kV/
In the range of mm to about 1.8kV/mm.The selection of particular value can be reduced according to type, the condensation point of Experimental Flowing Object in the range
Expected degree, the expected degree that viscosity reduces, fluid temperature estimated obtain.Self-evidently, if plus agent type do not conform to
Suitable plus underdosage, high speed shear rate is too low, the high speed shear time is too short or application electric field strength is inadequate, as a result will be
Condensation point, viscosity do not have significant changes, or only realize that pour point depression, drop are one of glutinous, can not reach the glutinous mesh of pour point depression, drop simultaneously
Mark.
As noted before, fluid adds the condensation point range of decrease after agent to be critically important, wherein suitable pour-point depressant is added, not refers 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 needs to carry out for Experimental Flowing Object
Screening or synthesis, the chemical reagent screening is including determining and suitably adding agent item for every kind of crude oil selection or synthesis pour-point depressant
Part, described plus agent condition include to add 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 rate 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 rate can be suitably in about 800rpm to the range of about 24000rpm
Interior, shear time can be suitably in the range of about 1min to about 20min, and electric field strength can be in about 0.8kV/mm to about 1.8kV/
In the range of mm.
Method according to the present invention, after suitable pour-point depressant is added into Experimental Flowing Object, the condensation point of fluid goes out
It now drops, and carries out high shear agitation within the scope of above-mentioned shear rate and mixing time, it is ensured that pour-point depressant is in Experimental Flowing Object
In it is evenly dispersed, while avoid particle aggregation therein be more than micron-sized larger particles, then in above-mentioned field strength range
Apply electric field, the particles such as wax crystalline substance in Experimental Flowing Object assemble bunchiness along direction of an electric field.The string-like particle chain after being detached from electric field
Gradually disperse, viscosity increases at any time returns back to initial value, and time-consuming 24 hours possible or more viscosity returns back to initial value.
Method according to 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
It is not limited to fluid flow direction, can be selected according to different fluid, electric field loading direction can, phase identical as fluid flow direction
Anti- or other directions, for example, with fluid flow direction angle at 45 °.
Method according to the present invention, Experimental Flowing Object receives plus agent type plus dosage, electric field strength and duration
Type such as waxy crude oil, asphaltic crude, mixed crude, product oil depending on fluid etc..It has determined that in and is added agent, electricity
Handle that pervious 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.
Method according to the present invention is stirred using high speed agitator in a preferred embodiment in accordance with this invention
It mixes and adds agent fluid, then by the electric field generated between electrode, typically, required electrode is 3 to 5, it is ensured that generating electric field is 2
To 4.Crude oil can be contacted with electrode, by electrode network, the direction for loading electric field can also be made to be not parallel to flow direction, no
It is directly contacted with fluid；The agitating paddle that the high shear agitation process uses is the oblique paddle of 45 ° of four leaf or double leaf plate paddle.
Improve the mobility for easily coagulating high tack coat product under low temperature to realize simultaneously, the invention proposes easily coagulate high tack coat product to add 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
It consumes low, it is glutinous to can be achieved at the same time oil product pour point depression, drop, and then the fluid ability of oil product at low temperature can be improved.
Detailed description of the invention
Fig. 1 makes easily to coagulate the glutinous integrated conduct method process flow signal of high tack coat product pour point depression drop to be provided by the present invention
Figure；
Fig. 2 is the waxy crude oil that provides of the embodiment of the present invention 1 under different electric field strengths, drops the variation relation figure of glutinous rate
(20℃)；
Fig. 3 is the waxy crude oil that provides of the embodiment of the present invention 1 under different electric field strengths, drops the variation relation figure of glutinous rate
(15℃)；
Fig. 4 is the waxy crude oil that provides of the embodiment of the present invention 2 under different electric field strengths, drops the variation relation figure of glutinous rate
(15 DEG C, 0rpm)；
Fig. 5 is the waxy crude oil that provides of the embodiment of the present invention 2 under different electric field strengths, drops the variation relation figure of glutinous rate
(15 DEG C, 1000rpm)；
Fig. 6 is the waxy crude oil that provides of the embodiment of the present invention 2 under different electric field strengths, drops the variation relation figure of glutinous rate
(15 DEG C, 8000rpm)；
Fig. 7 is the waxy crude oil that provides of the embodiment of the present invention 2 under different electric field strengths, drops the variation relation figure of glutinous rate
(15 DEG C, 21000rpm).
Specific embodiment
In order to which technical characteristic of the invention, purpose and beneficial effect are more clearly understood, now in conjunction in detail below
Embodiment and Figure of description carry out following detailed description to technical solution of the present invention, but should not be understood as 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 as shown in Figure 1, itself the following steps are included:
It selects 100g waxy crude oil (paraffin content 11.4wt%, relative dielectric constant 2.1), condensation point is 18 DEG C of (analysis
40 DEG C of wax point), it selects a kind of pour-point depressant (ethylene-vinyl acetate copolymer, EVA) and (26 DEG C) is added at room temperature
Enter in waxy crude oil, wherein the mass concentration of pour-point depressant is 1%, and 0.7g (agent concentration is added to be 70ppm) is added, obtains plus agent is oily
Product A；
After 60 DEG C of heat treatment 1h, adding the condensation point of 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 are obtained 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
The results are shown in Table 1 for degree, electric field strength and mass flow.Thus the drop obtained under different temperatures, different field strength sticks rate, 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 --- glutinous rate, % 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 shear 2min, at 20 °C
Electric field modification is carried out, with the increase of electric field strength, glutinous rate is dropped and incrementally increases, at 1.4kV/mm, it is reachable to drop glutinous rate
39.7%, there is good thinning effect, while the condensation point of oil product B is 8 DEG C, far below not plus 18 DEG C of condensation point of agent oil, thus
As it can be seen that method of the invention has reached the glutinous technical 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 shear 2min, oil product B is in 15 DEG C of items
Electric field modification is carried out under part, with the increase of electric field strength, is dropped glutinous rate and is incrementally increased, at 1.6kV/mm, dropping glutinous rate can
Up to 40.1%, there is good thinning effect, while the condensation point of oil product B is 8 DEG C, far below not plus 18 DEG C of condensation point of agent oil, by
This is as it can be seen that method of the invention has reached the glutinous technical 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 as shown in Figure 1, itself the following steps are included:
It selects 100g waxy crude oil (paraffin content 11.4wt%, relative dielectric constant 2.1), condensation point is 18 DEG C of (analysis
40 DEG C of wax point), it selects a kind of pour-point depressant (ethylene-vinyl acetate copolymer, EVA) and (26 DEG C) is added at room temperature
Enter in waxy crude oil, wherein the mass concentration of pour-point depressant is 1%, and 0.7g (agent concentration is added to be 70ppm) is added, obtains plus agent is oily
Product A；
After 60 DEG C of heat treatment 1h, adding the condensation point of 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
The results are shown in Table 2 for rate, electric field strength and mass flow.Thus oil product A is obtained after different shear rate high-speed stirreds
Oil product B, the result by electric field treatment is as shown in Fig. 4-Fig. 7.
Glutinous rate calculation formula is dropped as shown in above-mentioned formula 1.
Table 2
Figure 4, it is seen that the glutinous rate of drop is less than 6% after electric field treatment, base when oil product A is without high speed shear
This does not have thinning effect；And from figure 5 it can be seen that declining glutinous rate in each field strength has significantly after 1000rpm high-speed stirred
It is promoted, at 1.6kV/mm, drops glutinous rate compared with without the glutinous rate of drop under high speed shear (0rpm) processing and improve 24.4%.From Fig. 6
In as can be seen that with shearing rate further promotion, for oil product A after 8000rpm high-speed stirred, drop under 1.6kV/mm is glutinous
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 stirring, 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 processing, is far below and does not add 18 DEG C of agent oil condensation point, it can be seen that, the present invention mentions
The method of confession has achieved the purpose that while having dropped glutinous, pour point depression.
Claims (11)
1. a kind of make easily to coagulate the glutinous integrated conduct method of high tack coat product pour point depression drop, which is characterized in that method includes the following steps:
(1) it is 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；
The pour-point depressant is the pour-point depressant for making the condensation point for easily coagulating high tack coat product at least and reducing by 5 DEG C after being added, the heat treatment
Temperature is 30 DEG C to 70 DEG C, heat treatment time 30min-2h；
(2) high shear agitation is carried out to described plus agent oil product A, obtains the oil product B after high shear agitation；
The whipping temp of the high shear agitation the pour point temperature that adds agent oil product A with plus agent oil product A wax precipitation point temperature it
Between；
(3) apply the electric field of some strength, to the oil product B to realize while reduce the condensation point for easily coagulating high tack coat product and stick
Degree.
2. the method according to claim 1, wherein it is described easily coagulate high tack coat product include waxy crude oil, viscous crude and
Its mixed crude.
3. according to the method described in claim 2, it is characterized in that, described coagulate high tack coat product easily for waxy crude oil, wherein this contains
The paraffin content of wax crude oil is higher than 2.5wt%, relative dielectric constant 1.8-2.7.
4. the method according to claim 1, wherein the pour-point depressant is easily to coagulate high tack coat product after being added
Condensation point at least reduces by 10 DEG C of pour-point depressant.
5. method according to claim 1-4, which is characterized in that the additional amount of the pour-point depressant be 30ppm extremely
200ppm。
6. method according to claim 1-4, which is characterized in that the temperature of the heat treatment is 40 DEG C to 70
℃。
7. method according to claim 1-4, which is characterized in that the stirring rate of the high shear agitation is
800rpm to 24000rpm, mixing time are 1min to 20min.
8. method according to claim 1-4, which is characterized in that the electric field is DC electric field or pulse electricity
, which is 0.1kV/mm to 2.4kV/mm.
9. according to the method described in claim 8, it is characterized in that, the electric field strength is 0.8kV/mm to 1.8kV/mm.
10. according to claim 1 or method described in 9, which is characterized in that the number of the electric field is 2 to 4.
11. according to the method described in claim 9, it is characterized in that, the time interval of the impulse electric field is 1s to 30s.
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|---|---|---|---|---|
| WO2006065775A2 (en) * | 2004-12-15 | 2006-06-22 | Temple University Of The Commonwealth System Of Higher Education | Method for reduction of crude oil viscosity |
| CN102109094B (en) * | 2009-12-29 | 2012-12-12 | 中国石油天然气股份有限公司 | Pipeline transportation process method for wax-containing crude oil by adding viscosity-reducing and pour-point-reducing composition |
| CN202132649U (en) * | 2011-06-16 | 2012-02-01 | 中煤科工集团武汉设计研究院 | Pipeline transportation flow-splitting device for slurry |
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2016
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