CN105315446B - The breaking dehydrating method of polyether demulsification agent and w/o type crude oil emulsion - Google Patents
The breaking dehydrating method of polyether demulsification agent and w/o type crude oil emulsion Download PDFInfo
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Abstract
A kind of breaking dehydrating method of the w/o type crude oil emulsion the invention discloses polyether demulsification agent and using the demulsifier.The demulsifier is obtained by following steps：(1) by end moieties for the daiamid type molecule of amido is grafted on the daiamid type molecule that end moieties are ester group, wherein, end moieties are the daiamid type molecule and end moieties of amido for the mol ratio of the daiamid type molecule of ester group is 3 50:1, the end moieties are less than 3.0 for the algebraically of the daiamid type molecule that the daiamid type molecule and end moieties of amido are ester group；(2) product of step (1) and epoxide are reacted.Synthetic method of the present invention is simple, it is easy to industrialize large-scale production and application, the demulsifier of present invention synthesis has branched structure high, from the point of view of the test result of embodiment, with excellent demulsification.
Description
Technical field
The present invention relates to a kind of demulsifier, in particular it relates to a kind of polyether demulsification agent suitable for w/o type crude oil emulsion
And the breaking dehydrating method of the w/o type crude oil emulsion using the demulsifier.
Background technology
The heaviness and in poor quality of crude oil are the trend of world's crude oil production, and according to statistics, viscous crude, super-viscous oil account for the world and visited
More than the 20% of bright crude oil reserve, thickened oil recovery increasingly causes the attention of various countries.Colloid, asphalt content are higher in viscous crude, glue
Degree is very big, poor fluidity, thus its exploitation and collects that defeated difficulty is very big, and wherein thick oil emulsion breaking dehydration problem is particularly critical.Often at present
Thick oil demulsifier limitednumber, mostly based on the product that compounds, most demulsifiers cannot meet viscous crude, super-viscous oil
Dehydration demand, therefore need further to develop more efficient thick oil demulsifier.
Polyamidoamine dendrimer is main to be prepared with divergent method：With ethylenediamine as core is triggered, the first step is reacted, with third
E pioic acid methyl ester generates a quaternary ester, referred to as -0.5 generation by Michael addition reactions.Second step reaction, quaternary ester and excess
Ethylenediamine occur ammonolysis reaction generate a quaternary amide compound, referred to as 0 generation.Repeat first and second step reactions steps, you can
Obtain the polyamidoamine macromolecular compound of different algebraically.
In recent years, application of the modified polyether of polyamide-amine type branch-shape polymer (PAMAM) in terms of emulsion breakdown
Attract attention, such as patent CN101418230A describes polyamidoamine macromolecular and obtained through alkoxylation with epoxides
The dendritic polyether demulsifier for arriving, CN102321257A discloses mannitol polyether compound and polyamide-amide polyether compound
Carry out cross-linking reaction and obtain a kind of heavy oil low-temperature demulsifier.
The problem that prior art is present is demulsified with the polyethers that the polyamidoamine macromolecular less than 3.0 generations is modified
Effect is undesirable, and the 3.0 highly -branched degree polyamidoamine macromolecular extremely difficult and production cost of synthesis more than generation is very high,
Limit the synthesis and application of the branch shape polyethers high.
The content of the invention
It is an object of the invention to provide a kind of synthetic route it is simple, be easy to industrialized production and with good demulsification performance
Polyamidoamine polyether demulsification agent.
In the present invention, the algebraically of polyamidoamine molecule specifies by the following method：It is initiation core, the first step with ethylenediamine
Reaction, a quaternary ester, referred to as -0.5 generation are generated with methyl acrylate by Michael addition reactions；Second step reacts, quaternary
A quaternary amide compound, referred to as 0 generation generated and ammonolysis reaction with the ethylenediamine of excess in ester there is；Repeat the reaction of first and second step
Step, often increases by a step, and the algebraically of polyamidoamine molecule increases by 0.5 generation.
The invention provides a kind of polyether demulsification agent, the demulsifier is obtained by following steps：
(1) by end moieties for the polyamidoamine molecule of amido is grafted to the polyamidoamine that end moieties are ester group
On molecule, wherein, end moieties are the polyamidoamine molecule of ester group for the polyamidoamine molecule and end moieties of amido
Mol ratio be 3-50:1, the end moieties for amido polyamidoamine molecule and end moieties for ester group polyamide-
The algebraically of amine type molecule is less than 3.0；
(2) product of step (1) and epoxide are reacted.
Preferably, end moieties are the polyamidoamine molecule and the polyamidoamine point that end moieties are ester group of amido
The mol ratio of son is 5-30:1.
Preferably, the end moieties are ester group for the algebraically of the polyamidoamine molecule of amido is less than end moieties
The algebraically of polyamidoamine molecule.
Preferably, the end moieties are ester group for the algebraically of the polyamidoamine molecule of amido is less than end moieties
The difference of the algebraically of polyamidoamine molecule is 0.5-1.5.
Preferably, the end moieties are that the algebraically of the polyamidoamine molecule of amido is 0,1.0,2.0, the end group
Group is 0.5,1.5,2.5 for the algebraically of the polyamidoamine molecule of ester group.
Preferably, the condition of grafting includes, in alcoholic solvent, under inert gas shielding, is heated to reflux 1-24 hours.
Preferably, the alcoholic solvent is methyl alcohol and/or ethanol.
Preferably, the condition that step (2) is reacted includes：In the presence of base catalyst, the product and ring of step (1)
The weight ratio of oxygen compound is 1：10-500, pressure is 0.1-0.4 MPas, and temperature is 120-150 DEG C.
Preferably, the product of step (1) and the weight ratio of epoxide are 1：20-200.
Preferably, the epoxide is the mol ratio of oxirane and expoxy propane, oxirane and expoxy propane
It is 1:1-4.
Present invention also offers a kind of breaking dehydrating method of w/o type crude oil emulsion, the polyethers provided using the present invention
Demulsifier.
On the basis of the quality of w/o type crude oil emulsion, the consumption of the polyamidoamine demulsifier is generally 10-
500ppm, preferably 30-300ppm.
The condition of breaking emulsion and dewatering is generally：By demulsifier add w/o type crude oil emulsion in and be well mixed, be demulsified temperature
40~90 DEG C, it is demulsified 20~240min of the time.
Breaking emulsion and dewatering is carried out to w/o type crude oil emulsion using the above method, dehydration rate is up to more than 80%.
The present invention with low algebraically (be less than 3.0 generations) the polyamidoamine macromolecular of end group as ester group as core, directly with
Low algebraically (being less than for 3.0 generations) end moieties are the polyamidoamine macromolecular graft reaction of amido, so as to efficiently prepare with height
The macromolecular of the degree of branching and high density amino number, then further reaction is obtained the polyether demulsification agent of highly -branched degree.The present invention is closed
It is simple into method, it is easy to industrialize large-scale production and application, it is to avoid existing algebraically PAMAM dendritic macromole building-up processes high
It is tediously long, isolate and purify the problems such as difficult, production cost is higher.From the point of view of the test result of embodiment, the polyethers of present invention synthesis
Demulsifier significantly improves the demulsification of viscous crude, and its reason may is that：The polyamidoamine demulsifier of present invention synthesis
Molecule is in irregular branch shape structure, and with more highly -branched degree and high density terminal amino group number, the terminal amino group density of molecule is higher,
The epoxides side chain that can be grafted is more, branch's structural polyether high of formation, on the one hand because its Interfacial Adsorption ability is stronger,
With good interfacial activity, can rapid osmotic to oil-water interfaces, effectively replace the original surface reactive material of part interface, such as
Colloid, asphalitine etc., form new interfacial film；On the other hand due to collateralization degree very high, causing new interfacial film
Upper demulsifier molecules align is very loose, and intermolecular interaction is not strong, and the interfacial film strength of formation is very low, thus is easy to brokenly
Split, so as to reach preferable demulsification.Demulsifier of the present invention is inferior to the weight such as w/o type crude oil emulsion, especially viscous crude former
The w/o type crude oil emulsion that oil is formed has good demulsification performance, can be applied to oil extraction, collects the field such as defeated, refining.
Other features and advantages of the present invention will be described in detail in subsequent specific embodiment part.
Specific embodiment
Specific embodiment of the invention is described in detail below.It should be appreciated that described herein specific
Implementation method is merely to illustrate and explain the present invention, and is not intended to limit the invention.
The polyether demulsification agent that the present invention is provided is obtained by following steps：
(1) by end moieties for the polyamidoamine molecule of amido is grafted to the polyamidoamine that end moieties are ester group
On molecule, wherein, end moieties are the polyamidoamine molecule of ester group for the polyamidoamine molecule and end moieties of amido
Mol ratio be 3-50:1, the end moieties for amido polyamidoamine molecule and end moieties for ester group polyamide-
The algebraically of amine type molecule is less than 3.0；
(2) product of step (1) and epoxide are reacted.
Preferably, the end moieties are that the polyamidoamine molecule and end moieties of amido are the polyamide-amide of ester group
The algebraically of type molecule is less than 3.0, more preferably 0.5-2.5, more preferably 0.5-2.0.According to the preferred embodiment, profit
Demulsifier of the invention can be synthesized with the relatively low polyamidoamine molecule of algebraically, synthetic method is simple, and cost is relatively low.
The end moieties are the polyamidoamine molecule of ester group for the polyamidoamine molecule and end moieties of amido
It is commercially available, it is also possible to prepared by conventional preparation method.For example, polyamide-amide of the end moieties for amido
Type molecule is referred to demulsification performance [J] petroleum journals that the such as Wang Jun dendritic interphases intend O/W patterns emulsion of crude oil
(PETROLEUM PROCESSING), the 3rd phase of volume 2002,18：It is prepared by the method disclosed in 60-64.Can also be with reference to public in CN 10418230A
The method opened prepares the polyamidoamine molecule of various algebraically.
In the molecule with amido as end group, it is end group that ester group is formed by being reacted by amido and methyl acrylate
Molecule, then add ethylenediamine molecule, it is the molecule of end group that can form amido by ester group and reacting ethylenediamine.Pass through
Control reactions steps can be by polyamidoamine molecular Control in 0,1.0,2.0 generations or 0.5,1.5,2.5 generations etc..
Preferably, the end moieties are ester group for the algebraically of the polyamidoamine molecule of amido is less than end moieties
The algebraically of polyamidoamine molecule.It is highly preferred that the end moieties are less than for the algebraically of the polyamidoamine molecule of amido
End moieties are 0.5-1.5 for the difference of the algebraically of the polyamidoamine molecule of ester group.The end moieties are the polyamides of amido
The algebraically of amine-amine type molecule is preferably 0-2.0, and the end moieties are preferably for the algebraically of the polyamidoamine molecule of ester group
0.5-2.5.According to the preferred embodiment, be conducive to just end moieties for the polyamidoamine molecule of amido is grafted to end
Base group is on the polyamidoamine molecule of ester group.
End moieties are the polyamidoamine molecule of amido and rubbing for the polyamidoamine molecule that end moieties are ester group
You are ratio preferably 3-50:1, more preferably 5-30:1, more preferably 7-20:1.
As long as the polyamidoamine molecule that the reaction condition of the grafting makes end moieties be amido is grafted to end moieties
For on the polyamidoamine molecule of ester group, the condition being preferably grafted includes, in alcoholic solvent, in inert gas shielding
Under, it is heated to reflux 1-24 hours, more preferably by end moieties for the alcoholic solution of the polyamidoamine molecule of ester group is added drop-wise to end group
Group is in the alcoholic solution of the polyamidoamine molecule of amido.
The alcoholic solvent can be methyl alcohol and/or ethanol.Consumption to alcoholic solvent is not particularly limited, as long as can be by polyamides
Amine-amine type molecular melting is wherein, it is preferable that relative to the polyamidoamine that 100 grams of gross weight end moieties are amido
Molecule is grafted to the polyamidoamine molecule that end moieties are ester group, and the consumption of alcoholic solvent is 200-1000 milliliters.
The temperature being heated at reflux can be 65 DEG C, and the time can be 1-24 hours, preferably 2-18 hours.
The inert gas can be the protective gas for being not involved in reaction, such as nitrogen or rare gas.
The condition that step (2) is reacted can include：In the presence of base catalyst, the product of step (1) (i.e. step
(1) the polyamidoamine macromolecular that obtains of solvent is removed after completion of the reaction) with the weight ratio of epoxide can be 1：10-
1000, pressure can be 0.1-0.5 MPas, and preferably 0.1-0.4 MPas, temperature can be 110-180 DEG C, preferably 120-
150℃。
The reaction of step (2) is carried out preferably in autoclave, and the polyamide for preferably being obtained with synthesis in step (1)-
Amine type macromolecular is initiator, and it is added in autoclave with catalyst, with the abundant scavenging pipeline of nitrogen and reactor,
Reaction temperature is stirred and be warming up to, epoxide is then added dropwise, reaction to pressure in kettle no longer changes.Reaction is finished and can used
It is to obtain polyether demulsification agent of the invention that acid neutralizes the catalyst.
The epoxide can be the various chemical combination that reaction generation polyethers can be carried out with polyamidoamine macromolecular
Thing.Preferably, the epoxide is the mixture of oxirane and expoxy propane.Oxirane and expoxy propane mole
Than that can be 1:0.5-10, preferably 1:1-4.
The base catalyst can be one or more in potassium hydroxide, NaOH, caustic alcohol, and neutralization acid can
Think phosphoric acid or acetic acid.As long as the consumption of base catalyst can play catalytic action, it is preferable that base catalyst consumption is
The 0.2%-2% of total quality of material.
Below will the present invention will be described in detail by embodiment.
In embodiment and comparative example, the algebraically of polyamidoamine macromolecular is specified by definition of the invention.
Embodiment 1
The embodiment is used to prepare demulsifier of the invention.
(1) by 7.0 grams (2.5 mMs) 1.5 PAMAM type macromolecular, (end group is ester group, purchased from Weihai Chen Yuan points
Sub- new material Co., Ltd, 1.5 generation PAMAM-COOCH3) be dissolved in 10 ml methanols, it is added drop-wise to 20.7 grams of (40 mMs) 0 generations
(end group is amido to polyamidoamine macromolecular, purchased from Weihai Chen Yuan molecule new materials Co., Ltd, 0 generation PAMAM-NH2)
In 200 ml methanol solution, 4 hours, removal of solvent under reduced pressure are heated to reflux under nitrogen protection.
(2) product of 2g steps (1) and 1g catalyst KOH are added in autoclave, with the abundant scavenging conduit of nitrogen
Road and reactor 3 times, are slowly added dropwise 114g expoxy propane when stirring and be warming up to 120 DEG C, control 120 DEG C -150 DEG C of temperature, pressure
Reacted under power 0.1MPa-0.4MPa to finishing, add 86g oxirane to react to kettle pressure under the same conditions and no longer become
Change, cooling, discharging are neutralized to neutrality with acetic acid, obtain demulsifier A.
Embodiment 2
The embodiment is used to prepare demulsifier of the invention.
(1) by 14.4 grams (5 mMs) 1.5 PAMAM type macromolecular, (end group is ester group, purchased from Weihai Chen Yuan points
Sub- new material Co., Ltd) it is dissolved in 25 milliliters of methyl alcohol, it is added drop-wise to 57.2 grams of (40 mMs) 1.0 PAMAM types and divides greatly
In the methanol solution of sub (end group is amido, purchased from Weihai Chen Yuan molecule new materials Co., Ltd) (200 milliliters), under nitrogen protection
It is heated to reflux 6 hours, removal of solvent under reduced pressure.
(2) product of 2g steps (1) and 1g catalyst ns aOH are added in autoclave, with the abundant scavenging conduit of nitrogen
Road and reactor 3 times, are slowly added dropwise 145g expoxy propane when stirring and be warming up to 120 DEG C, control 120 DEG C -150 DEG C of temperature, pressure
Reacted under power 0.1MPa-0.4MPa to finishing, add 55g oxirane to react to kettle pressure under the same conditions and no longer become
Change, cooling, discharging are neutralized to neutrality with acetic acid, obtain demulsifier B.
Embodiment 3
The embodiment is used to prepare demulsifier of the invention.
(1) by 14.4 grams (5 mMs) 1.5 PAMAM type macromolecular, (end group is ester group, purchased from Weihai Chen Yuan points
Sub- new material Co., Ltd, is dissolved in 25 ml methanols, is added drop-wise to 57.2 grams of (40 mMs) 1.0 PAMAM types and divides greatly
In 200 ml methanol solution of son (end group is amido, purchased from Weihai Chen Yuan molecule new materials Co., Ltd), under nitrogen protection
It is heated to reflux 6 hours, removal of solvent under reduced pressure.
(2) product of 10g steps (1) and 1g catalyst caustic alcohols are added in autoclave, are fully blown with nitrogen
Pipeline and reactor 3 times are swept, 168g expoxy propane, 120 DEG C -150 of control temperature are slowly added dropwise when stirring and be warming up to 120 DEG C
DEG C, reacted under pressure 0.1MPa-0.4MPa to finishing, add 32g oxirane to react to kettle pressure under the same conditions not
Change again, cool down, discharge, neutrality is neutralized to phosphoric acid, obtain demulsifier C.
Embodiment 4
The embodiment is used to prepare demulsifier of the invention.
(1) by 12.0 grams (2 mMs) 2.5 PAMAM type macromolecular, (end group is ester group, purchased from Weihai Chen Yuan points
Sub- new material Co., Ltd) it is dissolved in 20 ml methanols, it is added drop-wise to 45.8 grams of (32 mMs) 1.0 PAMAM types and divides greatly
In the 200 ml methanol solution of sub (end group is amido, purchased from Weihai Chen Yuan molecule new materials Co., Ltd), nitrogen protection is lower to be added
Heat backflow 12 hours, removal of solvent under reduced pressure is that can obtain.
(2) product of 2g steps (1) and 1g catalyst KOH are added in autoclave, with the abundant scavenging conduit of nitrogen
Road and reactor 3 times, are slowly added dropwise 114g expoxy propane when stirring and be warming up to 120 DEG C, control 120 DEG C -150 DEG C of temperature, pressure
Reacted under power 0.1MPa-0.4MPa to finishing, add 86g oxirane to react to kettle pressure under the same conditions and no longer become
Change, cooling, discharging are neutralized to neutrality with acetic acid, obtain demulsifier D.
Embodiment 5
The embodiment is used to prepare demulsifier of the invention.
(1) by 12.0 grams (2 mMs) 2.5 PAMAM type macromolecular, (end group is ester group, purchased from Weihai Chen Yuan points
Sub- new material Co., Ltd) it is dissolved in 20 ml methanols, it is added drop-wise to 53.0 grams of (16 mMs) 2.0 PAMAM types and divides greatly
In the 200 ml methanol solution of sub (end group is amido, purchased from Weihai Chen Yuan molecule new materials Co., Ltd), nitrogen protection is lower to be added
Heat backflow 12 hours, removal of solvent under reduced pressure is that can obtain.
(2) product of 2g steps (1) and 1g catalyst ns aOH are added in autoclave, with the abundant scavenging conduit of nitrogen
Road and reactor 3 times, are slowly added dropwise 145g expoxy propane when stirring and be warming up to 120 DEG C, control 120 DEG C -150 DEG C of temperature, pressure
Reacted under power 0.1MPa-0.4MPa to finishing, add 55g oxirane to react to kettle pressure under the same conditions and no longer become
Change, cooling, discharging are neutralized to neutrality with acetic acid, obtain demulsifier E.
Embodiment 6
The embodiment is used to prepare demulsifier of the invention.
(1) by 12.0 grams (2 mMs) 2.5 PAMAM type macromolecular, (end group is ester group, purchased from Weihai Chen Yuan points
Sub- new material Co., Ltd) it is dissolved in 20 ml methanols, it is added drop-wise to 53.0 grams of (16 mMs) 2.0 PAMAM types and divides greatly
In the 200 ml methanol solution of sub (end group is amido, purchased from Weihai Chen Yuan molecule new materials Co., Ltd), nitrogen protection is lower to be added
Heat backflow 12 hours, removal of solvent under reduced pressure is that can obtain.
(2) product of 10g steps (1) and 1g catalyst caustic alcohols are added in autoclave, are fully blown with nitrogen
Pipeline and reactor 3 times are swept, 168g expoxy propane, 120 DEG C -150 of control temperature are slowly added dropwise when stirring and be warming up to 120 DEG C
DEG C, reacted under pressure 0.1MPa-0.4MPa to finishing, add 32g oxirane to react to kettle pressure under the same conditions not
Change again, cool down, discharge, neutrality is neutralized to phosphoric acid, obtain demulsifier F.
Comparative example 1
By 2g3.0 for PAMAM-NH2(being purchased from Weihai Chen Yuan molecule new materials Co., Ltd) and 1g catalyst ns aOH are added
To in autoclave, with the abundant scavenging pipeline of nitrogen and reactor 3 times, 145g is slowly added dropwise when stirring and be warming up to 120 DEG C
Expoxy propane, controls 120 DEG C -150 DEG C of temperature, is reacted under pressure 0.1MPa-0.4MPa to finishing, and adds 55g oxirane to exist
Pressure is reacted to kettle under the same terms no longer to change, cooled down, discharged, neutrality is neutralized to acetic acid, obtain demulsifier G.
Comparative example 2
By 2g2.0 for PAMAM-NH2(being purchased from Weihai Chen Yuan molecule new materials Co., Ltd) and 1g catalyst ns aOH are added
To in autoclave, with the abundant scavenging pipeline of nitrogen and reactor 3 times, 145g is slowly added dropwise when stirring and be warming up to 120 DEG C
Expoxy propane, controls 120 DEG C -150 DEG C of temperature, is reacted under pressure 0.1MPa-0.4MPa to finishing, and adds 55g oxirane to exist
Pressure is reacted to kettle under the same terms no longer to change, cooled down, discharged, neutrality is neutralized to acetic acid, obtain demulsifier H.
Performance test
Broken in detecting above-described embodiment and comparative example using oil and gas industry standard SY/T5281-2000 (bottle examination method)
Emulsion performance, and contrasted with conventional Heavy Oil polyether demulsification agent FJY-4 (Xinjiang welfare chemical plant).Experiment crude oil is Tahe weight
Matter viscous crude, density 946.9kg/m3, viscosity (80 DEG C) 203.2mm2/ s, acid number 0.14mgKOH/g, colloid 28.9%, asphalitine
14.5%, (crude oil is 4 with the volume ratio of distilled water with distilled water after crude oil is preheated:1) it is configured to the w/o type crude oil breast of stabilization
Shape liquid, 80 DEG C carry out demulsifier benchmark test, and result of the test see the table below：
The preferred embodiment of the present invention described in detail above, but, the present invention is not limited in above-mentioned implementation method
Detail, in range of the technology design of the invention, various simple variants can be carried out to technical scheme, this
A little simple variants belong to protection scope of the present invention.
It is further to note that each particular technique feature described in above-mentioned specific embodiment, in not lance
In the case of shield, can be combined by any suitable means.In order to avoid unnecessary repetition, the present invention to it is various can
The combination of energy is no longer separately illustrated.
Additionally, can also be combined between a variety of implementation methods of the invention, as long as it is without prejudice to originally
The thought of invention, it should equally be considered as content disclosed in this invention.
Claims (13)
1. a kind of polyether demulsification agent, it is characterised in that the demulsifier is obtained by following steps：
(1) by end moieties for the polyamidoamine molecule of amido is grafted to the polyamidoamine molecule that end moieties are ester group
On, wherein, end moieties are the polyamidoamine molecule of amido and rubbing for the polyamidoamine molecule that end moieties are ester group
You are than being 3-50:1, the end moieties are the polyamidoamine of ester group for the polyamidoamine molecule and end moieties of amido
The algebraically of molecule is less than 3.0；
(2) product of step (1) and epoxide are reacted.
2. demulsifier according to claim 1, wherein, end moieties are the polyamidoamine molecule and end group base of amido
Group is 5-30 for the mol ratio of the polyamidoamine molecule of ester group:1.
3. demulsifier according to claim 1, wherein, the end moieties are the generation of the polyamidoamine molecule of amido
Number is the algebraically of the polyamidoamine molecule of ester group less than end moieties.
4. demulsifier according to claim 3, wherein, the end moieties are the generation of the polyamidoamine molecule of amido
Number is less than end moieties for the difference of the algebraically of the polyamidoamine molecule of ester group is 0.5-1.5.
5. the demulsifier according to claim 3 or 4, wherein, the end moieties are the polyamidoamine molecule of amido
Algebraically is 0,1.0 or 2.0, and the end moieties are 0.5,1.5 or 2.5 for the algebraically of the polyamidoamine molecule of ester group.
6. demulsifier according to claim 1, wherein, the condition of grafting includes, in alcoholic solvent, in inert gas shielding
Under, it is heated to reflux 1-24 hours.
7. demulsifier according to claim 6, wherein, the alcoholic solvent is methyl alcohol and/or ethanol.
8. the demulsifier according to claim 6 or 7, wherein, it is the alcohol of the polyamidoamine molecule of ester group by end moieties
Solution is added drop-wise in the alcoholic solution of the polyamidoamine molecule that end moieties are amido.
9. demulsifier according to claim 1, wherein, the condition that step (2) is reacted includes：Deposited in base catalyst
Under, the product of step (1) is 1 with the weight ratio of epoxide：10-500, pressure is 0.1-0.4 MPas, and temperature is 120-
150℃。
10. the demulsifier according to claim 1 or 9, wherein, the epoxide is oxirane and expoxy propane,
Oxirane is 1 with the mol ratio of expoxy propane:1-4.
11. a kind of breaking dehydrating methods of w/o type crude oil emulsion, it is characterised in that any one in usage right requirement 1-10
Polyether demulsification agent described in.
12. in accordance with the method for claim 11, it is characterised in that described on the basis of the quality of w/o type crude oil emulsion
The consumption of polyether demulsification agent is 10-500ppm.
13. in accordance with the method for claim 11, it is characterised in that the condition of breaking emulsion and dewatering is：Demulsifier is added into w/o type
In crude oil emulsion and it is well mixed, be demulsified 40~90 DEG C of temperature, is demulsified 20~240min of the time.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101418230A (en) * | 2007-10-25 | 2009-04-29 | 中国科学院化学研究所 | Crude de-emulsifier and its preparing process |
| CN102234526A (en) * | 2010-04-30 | 2011-11-09 | 中国石油天然气集团公司 | Dendritic reverse demulsifier |
| CN103468302A (en) * | 2013-09-18 | 2013-12-25 | 天津工业大学 | Emulsion demulsifying agent extracted by fracturing and preparation method of emulsion demulsifying agent |
-
2014
- 2014-06-06 CN CN201410250046.9A patent/CN105315446B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101418230A (en) * | 2007-10-25 | 2009-04-29 | 中国科学院化学研究所 | Crude de-emulsifier and its preparing process |
| CN102234526A (en) * | 2010-04-30 | 2011-11-09 | 中国石油天然气集团公司 | Dendritic reverse demulsifier |
| CN103468302A (en) * | 2013-09-18 | 2013-12-25 | 天津工业大学 | Emulsion demulsifying agent extracted by fracturing and preparation method of emulsion demulsifying agent |
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