CN106884171A - A kind of preparation method of imidazoline inhibitor - Google Patents
A kind of preparation method of imidazoline inhibitor Download PDFInfo
- Publication number
- CN106884171A CN106884171A CN201710074357.8A CN201710074357A CN106884171A CN 106884171 A CN106884171 A CN 106884171A CN 201710074357 A CN201710074357 A CN 201710074357A CN 106884171 A CN106884171 A CN 106884171A
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- CN
- China
- Prior art keywords
- imidazoline
- water
- water entrainer
- preparation
- imidazoline inhibitor
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/54—Compositions for in situ inhibition of corrosion in boreholes or wells
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F11/00—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent
- C23F11/08—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in other liquids
- C23F11/10—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in other liquids using organic inhibitors
- C23F11/14—Nitrogen-containing compounds
- C23F11/149—Heterocyclic compounds containing nitrogen as hetero atom
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K2208/00—Aspects relating to compositions of drilling or well treatment fluids
- C09K2208/32—Anticorrosion additives
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Preventing Corrosion Or Incrustation Of Metals (AREA)
Abstract
The invention discloses a kind of preparation method of imidazoline inhibitor, it is related to petroleum industry anticorrosive preparation field.Step is：Imidazoline intermediate of the synthesis with five-membered ring imidazoline basic structure, two kinds of organic carboxyl acids and water entrainer are put into stirring in vacuum system, stirring, the reactor of water knockout drum；Imidazolidine derivatives of the synthesis containing hydrophilic group, it is stirring evenly and then adding into organic polyamine, and heated up to system, material is set to carry out 7~8h of amidation process at 180~200 DEG C, 260~280 DEG C are continuously heating to, 6~7h of cyclization are carried out, after the completion of reaction, vacuum sloughs the water entrainer in reactant, obtains final product imidazoline inhibitor.Preparation method process is simple proposed by the present invention; without inert gas shielding; raw material is easy to get; industrialized production is realized, a kind of mixture of imidazoline inhibitor is can obtain, by increasing capacitance it is possible to increase the intermiscibility of corrosion inhibiter and matrix material; so as to improve inhibition efficiency; addition is reduced, production cost is saved, with good economic benefit.
Description
Technical field
The present invention relates to petroleum industry anticorrosive preparation field, and in particular to a kind of preparation side of imidazoline inhibitor
Method.
Background technology
In recent years, in oilfield exploitation procedure, oil field water salinity is improved, and quick with industrial gas oil
Development, the oil gas field coexisted containing various corrosive mediums such as carbon dioxide occurs in succession, containing carbon dioxide in high temperature in oil gas
There is down extremely strong corrosivity, the accident for thus triggering is increasingly severe, and causes huge economic loss and serious society
Meeting consequence, at present main anti-corrosion measure has three kinds：Select corrosion resistant material, filling corrosion inhibiter and use inside coating or lining, its
Middle filling corrosion inhibiter is wherein economical, effectively and the very strong metal erosion control method of versatility, be particularly suitable for in Oil/gas Well
And used in gathering system, the corrosion inhibiter of current domestic-developed is mostly the active ingredient based on imidazoline, quaternary ammonium salt, and general
All over S elements are contained, with certain toxicity.On the other hand, because most domestic Corrosion Inhibitorss mechanism and producer lack oil
The means of testing of gas well field working conditions condition, the corrosion inhibiter adaptability of production is poor, and the problems such as failing is susceptible in application,
And production cost is higher, limits its development and apply.
The content of the invention
The invention provides a kind of preparation method of the efficient, imidazoline inhibitor of low toxicity, low production cost.
The technical solution adopted in the present invention is：
A kind of preparation method of imidazoline inhibitor, comprises the following steps：
1) imidazoline intermediate of the synthesis with five-membered ring imidazoline basic structure, two kinds of organic carboxyl acids and water entrainer are thrown
Enter in reactor, open agitating device and be stirred 2~3h；
2) synthesize the imidazolidine derivatives containing hydrophilic group, to step 1) in add in the mixture that stirs it is organic many
Amine, and heated up to system using heater, material is carried out 7~8h of amidation process at 180~200 DEG C, while water is straight
Connect in causing water knockout drum, accelerate reaction rate, and the water entrainer on water knockout drum upper strata is back in reaction system, be circulated
Use, be continuously heating to 260~280 DEG C, carry out 6~7h of cyclization；
3) imidazoline inhibitor is isolated, in step 2) in reaction terminate after, the moisture in water knockout drum is gone out, and will be upper
The water entrainer of layer imports the vacuum distillation apparatus of water entrainer, and derived water entrainer obtains final product pure water entrainer through vacuum distillation, and
Pure water entrainer is encapsulated and is preserved, for other reactions, vacuum system is opened while distillation water entrainer, will remained in product
Water entrainer detached from product, the imidazoline inhibitor of mixing is obtained final product in reaction bulb；
4) PH regulations, the pH value of the imidazoline inhibitor that will be isolated is adjusted to 6.0~9.0.
A kind of preparation method of above-mentioned imidazoline inhibitor, the freezing point of imidazoline inhibitor is -10 DEG C, corrosion rate
<0.040mm/a, corrosion inhibition rate>80%.
A kind of preparation method of above-mentioned imidazoline inhibitor, corrosion rate is surveyed according to Q/SYTZ 0178-2007
Fixed, corrosion inhibition rate and pitting factor are measured according to Q/SHCG40-2012.
Beneficial effects of the present invention are：Preparation method process is simple proposed by the present invention, without inert gas shielding, raw material
It is easy to get, realizes industrialized production, low production cost can obtain a kind of efficient imidazoline inhibitor of low toxicity, by increasing capacitance it is possible to increase inhibition
Agent and the intermiscibility of matrix material, so as to improve inhibition efficiency, reduce addition, production cost are saved, with good economy
Benefit.
Specific embodiment
In order to be more clearly understood to technical characteristic of the invention, purpose and effect, now with specific embodiment to this
Invention is described in detail.
A kind of preparation method of imidazoline inhibitor, comprises the following steps：
The imidazoline intermediate of S1, synthesis with five-membered ring imidazoline basic structure, by two kinds of organic carboxyl acids and water entrainer
Put into reactor, open agitating device and be stirred 2~3h；
S2, imidazolidine derivatives of the synthesis containing hydrophilic group, to step 1) in add in the mixture that stirs it is organic
Polyamines, and heat up to system using heater, material is carried out 7~8h of amidation process at 180~200 DEG C, while by water
It is directed directly in water knockout drum, accelerates reaction rate, and the water entrainer on water knockout drum upper strata is back in reaction system, is followed
Ring is used, and is continuously heating to 260~280 DEG C, carries out 6~7h of cyclization；
S3, imidazoline inhibitor is isolated, in step 2) in reaction terminate after, the moisture in water knockout drum is gone out, and will
The water entrainer on upper strata imports the vacuum distillation apparatus of water entrainer, and derived water entrainer obtains final product pure water entrainer through vacuum distillation,
And pure water entrainer is encapsulated into preservation, and for other reactions, vacuum system is opened while distillation water entrainer, will be residual in product
The water entrainer for staying is detached from product, and the imidazoline inhibitor of mixing is obtained final product in reaction bulb；
S4, PH are adjusted, and the pH value of the imidazoline inhibitor that will be isolated is adjusted to 6.0~9.0.
A kind of preparation method of above-mentioned imidazoline inhibitor, the freezing point of obtained imidazoline inhibitor is -10 DEG C, rotten
Erosion speed<0.040mm/a, corrosion inhibition rate>80%.Wherein, the corrosion rate of imidazoline inhibitor is according to Q/SYTZ 0178-2007
It is measured, corrosion inhibition rate and pitting factor are measured according to Q/SHCG40-2012.
Preparation method process is simple proposed by the present invention, without inert gas shielding, raw material is easy to get, and realizes industrial metaplasia
Produce, low production cost can obtain a kind of efficient imidazoline inhibitor of low toxicity, by increasing capacitance it is possible to increase corrosion inhibiter mixes with matrix material
Property, so as to improve inhibition efficiency, addition is reduced, production cost is saved, with good economic benefit.
General principle of the invention, principal character and advantages of the present invention has been shown and described above.The technology of the industry
Personnel it should be appreciated that the present invention is not limited to the above embodiments, the simply present invention described in above-described embodiment and specification
Principle, various changes and modifications of the present invention are possible without departing from the spirit and scope of the present invention, these change and
Improvement is both fallen within the range of claimed invention, the protection domain of application claims by appending claims and its
Equivalent is defined.
Claims (3)
1. a kind of preparation method of imidazoline inhibitor, it is characterised in that comprise the following steps：
1) imidazoline intermediate of the synthesis with five-membered ring imidazoline basic structure, two kinds of organic carboxyl acids and water entrainer are put into
In reactor, open agitating device and be stirred 2~3h；
2) synthesize the imidazolidine derivatives containing hydrophilic group, to step 1) in add organic polyamine in the mixture that stirs,
And heated up to system using heater, material is carried out 7~8h of amidation process at 180~200 DEG C, while water is directly drawn
Into water knockout drum, accelerate reaction rate, and the water entrainer on water knockout drum upper strata is back in reaction system, being circulated makes
With, 260~280 DEG C are continuously heating to, carry out 6~7h of cyclization；
3) imidazoline inhibitor is isolated, in step 2) in reaction terminate after, the moisture in water knockout drum is gone out, and by upper strata
Water entrainer imports the vacuum distillation apparatus of water entrainer, and derived water entrainer obtains final product pure water entrainer through vacuum distillation, and will be pure
Net water entrainer encapsulation is preserved, and for other reactions, opens vacuum system while distillation water entrainer, the band that will be remained in product
Aqua is detached from product, and the imidazoline inhibitor of mixing is obtained final product in reaction bulb；
4) PH regulations, the pH value of the imidazoline inhibitor that will be isolated is adjusted to 6.0~9.0.
2. the preparation method of a kind of imidazoline inhibitor according to claim 1, it is characterised in that imidazoline inhibitor
Freezing point is -10 DEG C, corrosion rate<0.040mm/a, corrosion inhibition rate>80%.
3. the preparation method of a kind of imidazoline inhibitor according to claim 2, it is characterised in that corrosion rate is according to Q/
SYTZ 0178-2007 are measured, and corrosion inhibition rate and pitting factor are measured according to Q/SHCG40-2012.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710074357.8A CN106884171A (en) | 2017-02-10 | 2017-02-10 | A kind of preparation method of imidazoline inhibitor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710074357.8A CN106884171A (en) | 2017-02-10 | 2017-02-10 | A kind of preparation method of imidazoline inhibitor |
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| CN106884171A true CN106884171A (en) | 2017-06-23 |
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| CN201710074357.8A Pending CN106884171A (en) | 2017-02-10 | 2017-02-10 | A kind of preparation method of imidazoline inhibitor |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110746932A (en) * | 2019-11-18 | 2020-02-04 | 黄山学院 | Short-term antirust low-chlorine snow-melting agent and preparation method thereof |
| CN111718298A (en) * | 2020-04-26 | 2020-09-29 | 西南石油大学 | Imidazoline derivative, synthesis method and application thereof |
-
2017
- 2017-02-10 CN CN201710074357.8A patent/CN106884171A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110746932A (en) * | 2019-11-18 | 2020-02-04 | 黄山学院 | Short-term antirust low-chlorine snow-melting agent and preparation method thereof |
| CN110746932B (en) * | 2019-11-18 | 2022-09-13 | 黄山学院 | Short-term antirust low-chlorine snow-melting agent and preparation method thereof |
| CN111718298A (en) * | 2020-04-26 | 2020-09-29 | 西南石油大学 | Imidazoline derivative, synthesis method and application thereof |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170623 |
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| WD01 | Invention patent application deemed withdrawn after publication |