CN106381495B - A kind of application of bi-quaternary ammonium salt containing ester group as carbon steel oil gas field corrosion inhibiter - Google Patents
A kind of application of bi-quaternary ammonium salt containing ester group as carbon steel oil gas field corrosion inhibiter Download PDFInfo
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- CN106381495B CN106381495B CN201610867133.8A CN201610867133A CN106381495B CN 106381495 B CN106381495 B CN 106381495B CN 201610867133 A CN201610867133 A CN 201610867133A CN 106381495 B CN106381495 B CN 106381495B
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- carbon steel
- quaternary ammonium
- corrosion inhibiter
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- 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
- C23F11/141—Amines; Quaternary ammonium compounds
- C23F11/143—Salts of amines
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- Preventing Corrosion Or Incrustation Of Metals (AREA)
Abstract
The invention belongs to steel (carbon steel) corrosion and protection technical fields, and in particular to a kind of application of bi-quaternary ammonium salt containing ester group as carbon steel oil gas field corrosion inhibiter.The active ingredient of a kind of application of bi-quaternary ammonium salt containing ester group as carbon steel oil gas field corrosion inhibiter, the corrosion inhibiter is 1,3- bis- [(2- ethyl laurates) double methyl quaternary ammonium bases] -2- hydroxypropyl dichloros.Under corrosion inhibiter of the present invention can prevent carbon steel material and its product in oil gas field environment or corresponding acid condition, the corrosion electrochemistry occurred when being contacted with saturation carbon dioxide salting liquid reacts (local corrosion and general corrosion), dosage is few, it is nontoxic, environmentally protective, efficient, continuous action ability is strong, the corrosion failure of carbon steel can effectively be inhibited, there is significant application value and vast market prospect.
Description
Technical field
The invention belongs to steel (carbon steel) corrosion and protection technical fields, and in particular to a kind of conduct of bi-quaternary ammonium salt containing ester group
The application of carbon steel oil gas field corrosion inhibiter.
Background technology
Carbon dioxide corrosion is a kind of Corrosion Types most commonly seen in oil gas field production process, it has seriously threatened stone
The safety in production of oily chemical industry often causes huge economic loss, or even injures personal safety.Corrosion inhibiter protects skill
Art is as a kind of method of low cost, effective and easy to implement, especially suitable for oil gas well mining and acquisition system.
For internal corrosion, advantage is more obvious.Using corrosion inhibiter, conveying equipment on tubing and casing and underground sampling instrument and well can be taken into account
With the protection of pipeline.
Current corrosion inhibiter employed both at home and abroad is essentially all adsorption corrosion inhibitor, as imidazoline and its salt, chain have
Machine amine and its derivative, imidazolidine derivatives quaternary ammonium salt, rosin amine derivative or other organic compounds (sulfonate, it is sub-
Amine acetogenin and alkynol class).Generally believe the corrosion mitigating effect of imidazolidine derivatives, organic amine and quaternary ammonium salt organic amine salt
Preferably.Occupy the organic inhibitor of staple market share such as at present：Imidazolines, quaternary ammonium salt, there are still antiseptic property indexs
The problem of can not making overall plans with zero pollutant discharge, thus asepsis environment-protecting becomes corrosion inhibiter can not avoid in Future Development
Bottlenecks.
Invention content
A kind of application the purpose of the present invention is to provide bi-quaternary ammonium salt containing ester group as carbon steel oil gas field corrosion inhibiter, specifically
It is related to the carbon steel corrosion inhibitor that a kind of nontoxic, efficient active ingredient is the bi-quaternary ammonium salt containing ester group, to inhibit carbon steel and its product
Corrosion in being saturated carbon dioxide salting liquid.
To achieve the above object, the technical solution adopted by the present invention is：
The active ingredient of a kind of application of bi-quaternary ammonium salt containing ester group as carbon steel oil gas field corrosion inhibiter, the corrosion inhibiter is 1,
3- bis- [(2- ethyl laurates) double methyl quaternary ammonium bases] -2- hydroxypropyl dichloros.
A concentration of 0.01-0.2g/L of the active ingredient.
The corrosion inhibiter is applied in oil gas field environment or under the conditions of corresponding acid, in saturation carbon dioxide salting liquid
Carbon steel material and its product carry out corrosion protection.
Carbon steel material and its product are immersed in the saturation carbon dioxide salting liquid that the corrosion inhibiter is added, bath temperature
It is 25-55 DEG C.
The pH ranging from 5-6 of the oil gas field environment or corresponding acid condition, the saturation carbon dioxide salting liquid refer to
Carbon dioxide gas is passed through in the sodium chloride solution that mass fraction is 3%, and carbon dioxide gas purity is 99.99%.
Ester group is introduced into bi-quaternary ammonium salt molecule, the degradation property of bi-quaternary ammonium salt can be not only improved, is reduced to environment
It influences, the activated adoption center of bi-quaternary ammonium salt corrosion inhibiter can also be increased, be conducive to the formation of adsorbed film, metal is played more preferably
Protective effect.Corrosion inhibiter of the present invention can prevent carbon steel material and its product in oil gas field environment or corresponding acid item
Under part, the corrosion electrochemistry occurred when being contacted with saturation carbon dioxide salting liquid reacts (local corrosion and general corrosion), uses
Amount is few, and nontoxic, environmentally protective, efficient, continuous action ability is strong, can effectively inhibit the corrosion failure of carbon steel, has notable
Application value and vast market prospect.
The beneficial effects of the invention are as follows：
1. at low cost.The active ingredient of corrosion inhibiter of the present invention is 1,3- bis- [(2- ethyl laurates) double methyl quaternary ammonium bases]-
2- hydroxypropyl dichloros, which has been used as surfactant, derives from a wealth of sources, cheap.
2. asepsis environment-protecting.Corrosion inhibiter of the present invention and the inorganic inhibitor and imidazoline that occupy dominant contribution currently on the market are slow
Erosion agent is compared, and the degradable advantage for acid and alcohol in soil and organism will not bring load to environment, meet green inhibition
The trend of agent development.
3. strong applicability.Corrosion inhibiter of the present invention it is applied widely, it is molten in the saturation carbon dioxide salt of different salinity, temperature
Excellent corrosion inhibition is all had in liquid.
4. high efficiency.The present invention, which adds a small amount of corrosion inhibiter, can effectively inhibit carbon steel material or its product to be situated between in corrosion
Destruction in matter.
5. durability is good.Corrosion inhibiter of the present invention has long-acting duration of action, can be protected in acidic environment for a long time
Hold higher inhibition efficiency.
Specific implementation mode
The present invention is according to GB10124-88《Uniform Corrosion Method of Laboratory Immersion Test method》Zero-G test is carried out,
And carry out corrosion inhibition characterization using two kinds of electrochemical methods of electrochemical alternate impedance spectrum and potentiodynamic polarization.Although three kinds of methods
Obtained inhibition efficiency has a different, due to weight-loss method test is mainly average corrosion rate, electrochemical method test
Be corrosion efficiency in transient process, but the general morphologictrend of various methods is consistent, it can be seen that dense in different corrosion inhibiter
The compound all has excellent corrosion inhibition under degree, temperature condition.
Embodiment 1
Condition：Experiment material is carbon steel (Fe：99.5%, Mn：0.4-0.5%, C：0.1-0.2%), effective corrosion inhibiter at
It is divided into 1,3- bis- [(2- ethyl laurates) double methyl quaternary ammonium bases] -2- hydroxypropyl dichloros, medium is 3% sodium chloride solution, is used
1L is measured, carbon dioxide gas is passed through into solution to being saturated, 1,3- bis- [(2- ethyl laurates) double methyl quaternary ammonium bases] -2- is added
The effective content of hydroxypropyl dichloro is 10mg, and temperature is 25 DEG C, and Immersion time is 3 days.
Obtaining inhibition efficiency by experiment test is respectively：Weightlessness 35.1%, electrochemical impedance spectroscopy 37.7%, electrokinetic potential pole
Change curve 37.2%, shows that compound has certain corrosion mitigating effect.
Embodiment 2
Condition：Experiment material is carbon steel (Fe：99.5%, Mn：0.4-0.5%, C：0.1-0.2%), effective corrosion inhibiter at
It is divided into 1,3- bis- [(2- ethyl laurates) double methyl quaternary ammonium bases] -2- hydroxypropyl dichloros, medium is 3% sodium chloride solution, is used
1L is measured, carbon dioxide gas is passed through into solution to being saturated, 1,3- bis- [(2- ethyl laurates) double methyl quaternary ammonium bases] -2- is added
The effective content of hydroxypropyl dichloro is 20mg, and temperature is 25 DEG C, and Immersion time is 3 days.
Obtaining inhibition efficiency by experiment test is respectively：Weightlessness 41.6%, electrochemical impedance spectroscopy 42.4%, electrokinetic potential pole
Change curve 42.8%, shows that compound has certain corrosion mitigating effect.
Embodiment 3
Condition：Experiment material is carbon steel (Fe：99.5%, Mn：0.4-0.5%, C：0.1-0.2%), effective corrosion inhibiter at
It is divided into 1,3- bis- [(2- ethyl laurates) double methyl quaternary ammonium bases] -2- hydroxypropyl dichloros, medium is 3% sodium chloride solution, is used
1L is measured, carbon dioxide gas is passed through into solution to being saturated, 1,3- bis- [(2- ethyl laurates) double methyl quaternary ammonium bases] -2- is added
The effective content of hydroxypropyl dichloro is 30mg, and temperature is 25 DEG C, and Immersion time is 3 days.
Obtaining inhibition efficiency by experiment test is respectively：Weightlessness 55.7%, electrochemical impedance spectroscopy 55.5%, electrokinetic potential pole
Change curve 56.8%, shows that compound has certain corrosion mitigating effect.
Embodiment 4
Condition：Experiment material is carbon steel (Fe：99.5%, Mn：0.4-0.5%, C：0.1-0.2%), effective corrosion inhibiter at
It is divided into 1,3- bis- [(2- ethyl laurates) double methyl quaternary ammonium bases] -2- hydroxypropyl dichloros, medium is 3% sodium chloride solution, is used
1L is measured, carbon dioxide gas is passed through into solution to being saturated, 1,3- bis- [(2- ethyl laurates) double methyl quaternary ammonium bases] -2- is added
The effective content of hydroxypropyl dichloro is 50mg, and temperature is 25 DEG C, and Immersion time is 3 days.
Obtaining inhibition efficiency by experiment test is respectively：Weightlessness 76.4%, electrochemical impedance spectroscopy 77.2%, electrokinetic potential pole
Change curve 77.1%, shows that compound is low, the efficient corrosion inhibiter of dosage.
Embodiment 5
Condition：Experiment material is carbon steel (Fe：99.5%, Mn：0.4-0.5%, C：0.1-0.2%), effective corrosion inhibiter at
It is divided into 1,3- bis- [(2- ethyl laurates) double methyl quaternary ammonium bases] -2- hydroxypropyl dichloros, medium is 3% sodium chloride solution, is used
1L is measured, carbon dioxide gas is passed through into solution to being saturated, 1,3- bis- [(2- ethyl laurates) double methyl quaternary ammonium bases] -2- is added
The effective content of hydroxypropyl dichloro is 100mg, and temperature is 25 DEG C, and Immersion time is 3 days.
Obtaining inhibition efficiency by experiment test is respectively：Weightlessness 88.2%, electrochemical impedance spectroscopy 88.6%, electrokinetic potential pole
Change curve 88.1%, shows that compound is low, the efficient corrosion inhibiter of dosage.
Embodiment 6
Condition：Experiment material is carbon steel (Fe：99.5%, Mn：0.4-0.5%, C：0.1-0.2%), effective corrosion inhibiter at
It is divided into 1,3- bis- [(2- ethyl laurates) double methyl quaternary ammonium bases] -2- hydroxypropyl dichloros, medium is 3% sodium chloride solution, is used
1L is measured, carbon dioxide gas is passed through into solution to being saturated, 1,3- bis- [(2- ethyl laurates) double methyl quaternary ammonium bases] -2- is added
The effective content of hydroxypropyl dichloro is 200mg, and temperature is 25 DEG C, and Immersion time is 3 days.
Obtaining inhibition efficiency by experiment test is respectively：Weightlessness 91.4%, electrochemical impedance spectroscopy 90.2%, electrokinetic potential pole
Change curve 90.5%, shows that compound is low, the efficient corrosion inhibiter of dosage.
Embodiment 7
Condition：Experiment material is carbon steel (Fe：99.5%, Mn：0.4-0.5%, C：0.1-0.2%), effective corrosion inhibiter at
It is divided into 1,3- bis- [(2- ethyl laurates) double methyl quaternary ammonium bases] -2- hydroxypropyl dichloros, medium is 3% sodium chloride solution, is used
1L is measured, carbon dioxide gas is passed through into solution to being saturated, 1,3- bis- [(2- ethyl laurates) double methyl quaternary ammonium bases] -2- is added
The effective content of hydroxypropyl dichloro is 100mg, and temperature is 35 DEG C, and Immersion time is 3 days.
Obtaining inhibition efficiency by experiment test is respectively：Weightlessness 89.8%, electrochemical impedance spectroscopy 92.4%, electrokinetic potential pole
Change curve 93.3%, shows that compound is low, the efficient corrosion inhibiter of dosage.
Embodiment 8
Condition：Experiment material is carbon steel (Fe：99.5%, Mn：0.4-0.5%, C：0.1-0.2%), effective corrosion inhibiter at
It is divided into 1,3- bis- [(2- ethyl laurates) double methyl quaternary ammonium bases] -2- hydroxypropyl dichloros, medium is 3% sodium chloride solution, is used
1L is measured, carbon dioxide gas is passed through into solution to being saturated, 1,3- bis- [(2- ethyl laurates) double methyl quaternary ammonium bases] -2- is added
The effective content of hydroxypropyl dichloro is 100mg, and temperature is 45 DEG C, and Immersion time is 3 days.
Obtaining inhibition efficiency by experiment test is respectively：Weightlessness 90.2%, electrochemical impedance spectroscopy 91.3%, electrokinetic potential pole
Change curve 91.8%, shows that compound is low, the efficient corrosion inhibiter of dosage.
Embodiment 9
Condition：Experiment material is carbon steel (Fe：99.5%, Mn：0.4-0.5%, C：0.1-0.2%), effective corrosion inhibiter at
It is divided into 1,3- bis- [(2- ethyl laurates) double methyl quaternary ammonium bases] -2- hydroxypropyl dichloros, medium is 3% sodium chloride solution, is used
1L is measured, carbon dioxide gas is passed through into solution to being saturated, 1,3- bis- [(2- ethyl laurates) double methyl quaternary ammonium bases] -2- is added
The effective content of hydroxypropyl dichloro is 100mg, and temperature is 55 DEG C, and Immersion time is 3 days.
Obtaining inhibition efficiency by experiment test is respectively：Weightlessness 88.3%, electrochemical impedance spectroscopy 89.4%, electrokinetic potential pole
Change curve 89.9%, shows that compound is low, the efficient corrosion inhibiter of dosage.
Claims (5)
1. a kind of application of bi-quaternary ammonium salt containing ester group as carbon steel oil gas field corrosion inhibiter, it is characterised in that：The corrosion inhibiter has
Effect ingredient is 1,3- bis- [(2- ethyl laurates) double methyl quaternary ammonium bases] -2- hydroxypropyl dichloros.
2. a kind of application of the bi-quaternary ammonium salt containing ester group according to claim 1 as carbon steel oil gas field corrosion inhibiter, feature
It is：A concentration of 0.01-0.2g/L of the active ingredient.
3. a kind of application of the bi-quaternary ammonium salt containing ester group according to claim 1 or 2 as carbon steel oil gas field corrosion inhibiter, special
Sign is：The corrosion inhibiter is applied in oil gas field environment or under the conditions of corresponding acid, in saturation carbon dioxide salting liquid
Carbon steel material and its product carry out corrosion protection.
4. a kind of application of the bi-quaternary ammonium salt containing ester group according to claim 3 as carbon steel oil gas field corrosion inhibiter, feature
It is：Carbon steel material and its product are immersed in the saturation carbon dioxide salting liquid that the corrosion inhibiter is added, bath temperature is
25-55℃。
5. a kind of application of the bi-quaternary ammonium salt containing ester group according to claim 4 as carbon steel oil gas field corrosion inhibiter, feature
It is：The pH ranging from 5-6 of the oil gas field environment or corresponding acid condition, the saturation carbon dioxide salting liquid refers in matter
Carbon dioxide gas is passed through in the sodium chloride solution that amount score is 3%, and carbon dioxide gas purity is 99.99%.
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| CN201610867133.8A CN106381495B (en) | 2016-09-30 | 2016-09-30 | A kind of application of bi-quaternary ammonium salt containing ester group as carbon steel oil gas field corrosion inhibiter |
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| CN101921233B (en) * | 2010-08-10 | 2012-08-01 | 陕西科技大学 | Tree imidazoline quaternary ammonium salt corrosion inhibitor and preparation method thereof |
| US9284650B2 (en) * | 2014-02-27 | 2016-03-15 | Ecolab Usa Inc. | Quaternary fatty acid esters as corrosion inhibitors |
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