CN106433781B - High-temperature corrosion inhibitor and preparation method thereof for oilfield exploitation and petroleum refining process - Google Patents
High-temperature corrosion inhibitor and preparation method thereof for oilfield exploitation and petroleum refining process Download PDFInfo
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- CN106433781B CN106433781B CN201610814962.XA CN201610814962A CN106433781B CN 106433781 B CN106433781 B CN 106433781B CN 201610814962 A CN201610814962 A CN 201610814962A CN 106433781 B CN106433781 B CN 106433781B
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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
- C10G75/00—Inhibiting corrosion or fouling in apparatus for treatment or conversion of hydrocarbon oils, in general
- C10G75/02—Inhibiting corrosion or fouling in apparatus for treatment or conversion of hydrocarbon oils, in general by addition of corrosion inhibitors
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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
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- Oil, Petroleum & Natural Gas (AREA)
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Abstract
The invention belongs to petrochemical equipment technical fields, specifically provide a kind of high-temperature corrosion inhibitor for oilfield exploitation and petroleum refining process, include the raw material of following parts by weight：Raw material group A：2~4 parts of 6~8 parts of ricinoleic acid and stearic acid；Raw material group B：N methyl diethanolamines, triethanolamine and technical white oil；The weight of the N methyl diethanolamines is 0.18~0.2 times of the raw material group A total weights, and the weight of the triethanolamine is 0.06~0.08 times of the raw material group A total weights, and the weight of the technical white oil is 0.35~0.4 times of the raw material group A total weights.High-temperature corrosion inhibitor corrosion inhibition rate provided by the invention about 97% have many advantages, such as corrosion mitigating effect it is good, it is nonirritant it is safe and reliable, to produce and use safe operation process stable and environmentally friendly.Preparation method provided by the invention considers the performance of each raw material, can obtain the high-temperature corrosion inhibitor that performance is more stable, corrosion mitigating effect is more preferably excellent.
Description
Technical field
The invention belongs to petrochemical equipment technical fields, and in particular to one kind being used for oilfield exploitation and petroleum refining process
High-temperature corrosion inhibitor and preparation method thereof.
Background technology
In petrochemical production process, it is often used a variety of machinery equipments.Machinery equipment corrosion protection is one important
Work, is related to service life and the safety in production of equipment.Especially for heating furnace tube, pipeline, distillation tower tray floor
And the temperature such as side line, bottom of tower pipeline be more than 270 DEG C or more position and petroleum drilling and mining in high temperature position, it is anti-with greater need for corrosion
Shield.Mainly the corrosion at position is caused by petroleum acids under hot conditions with the corrosion of upper bit, wherein most importantly aphthenic acids
Corrosion.Also, the position corrosion condition that studies have shown that is in 270-330 DEG C and 350-380 DEG C of high temperature section is the tightest
Weight.
Corrosion protection for high temperature position, the high-temperature corrosion inhibitor type provided in the prior art is few, most important height
Warm corrosion inhibiter is the high-temperature corrosion inhibitor GX-195 of Guitong New Material Science-Technology Co., Ltd., Shanghai's production, this high-temperature corrosion inhibitor exists
The shortcomings that it is also more apparent.It is that volatile organic amine ethylenediamine has been arrived in use in production process first, there is penetrating odor,
It influences production and uses operating environment, it is unfriendly to environment there are larger security risk.Followed by corrosion mitigating effect is limited, still waits for
Further promoted.
In conclusion how by adjusting a environmentally friendly, production of formula composition and process of preparing acquisition
High-temperature corrosion inhibitor that is safer and possessing higher corrosion inhibition rate is operated, is a problem to be solved.
Invention content
It is more preferable the present invention provides a kind of corrosion mitigating effect and produce in order to solve the above problem of the existing technology
And it is reliable using process safety, have no irritating odor the environmental-friendly high temperature inhibition for oilfield exploitation and petroleum refining process
Agent, the present invention have also correspondingly provided the preparation method of the high-temperature corrosion inhibitor.
Present invention firstly provides a kind of high-temperature corrosion inhibitors for oilfield exploitation and petroleum refining process, including following weight
The raw material of part：Raw material group A：2~4 parts of 6~8 parts of ricinoleic acid and stearic acid；Raw material group B：N methyldiethanol amine, triethanolamine
And technical white oil；The weight of the N methyldiethanol amine is 0.18~0.2 times of the raw material group A total weights, three second
The weight of hydramine is 0.06~0.08 times of the raw material group A total weights, and the weight of the technical white oil is that the raw material group A is total
0.35~0.4 times of weight.
According to one embodiment of present invention, the ricinoleic acid is preferably 7 parts by weight, and the stearic acid is preferably 3 weights
Measure part；The N methyldiethanol amine is preferably 1.9 parts by weight, and the triethanolamine is preferably 0.7 parts by weight, and the industry is white
Oil is preferably 3.8 parts by weight.
On the basis of the various raw material types of aforementioned present invention proportioning, the present invention also provides the high-temperature corrosion inhibitors
Preparation method includes the following steps：S1, it ricinoleic acid and stearic acid is weighed is uniformly mixed and obtain intermediary one；S2, N- first is weighed
Base diethanol amine and being added in the intermediary one is reacted, and obtains intermediary two after completion of the reaction；S3, triethanolamine is weighed
And be added in the intermediary two and reacted, intermediary three is obtained after completion of the reaction；S4, it weighs described in technical white oil and addition
In intermediary three, stir evenly up to the high-temperature corrosion inhibitor.
In order to further enhance the corrosion protection of finished product high-temperature corrosion inhibitor, the acute embodiment provided by the invention of root,
For in the preparation method of high-temperature corrosion inhibitor, preferred following details technological parameter：The reaction temperature reacted described in S2 be 105~
115 DEG C, the reaction time reacted described in S2 is 3~4h.In S3：First by the temperature of the intermediary two be reduced to 85 DEG C with
Under, the triethanolamine is added, first will.The reaction temperature reacted described in S3 is 105~115 DEG C, is reacted described in S3
Reaction time is 1~2h.In S4：First by the temperature of the intermediary three be reduced to 100 DEG C hereinafter, to add the industry white
Oil.In S4：After the technical white oil is added, keeps being cooled to room temperature under lasting stirring, obtain the high-temperature corrosion inhibitor.
It is discussed based on above scheme, beneficial effects of the present invention are：
First, high-temperature corrosion inhibitor provided by the invention can be used for the equipment to PETROLEUM PROCESSING technical process due to aphthenic acids etc.
Corrode with caused by material, and for the corrosion mitigating effect at the equipment position at 270-330 DEG C and 350-380 DEG C of high temperature section
Good, corrosion inhibition rate is up to 97% or so, and mutually compared to existing mainstream high-temperature corrosion inhibitor GX-195 on the market, corrosion inhibition rate improves 8
~11%.Meanwhile high-temperature corrosion inhibitor provided by the invention prepare in raw material using the more safety such as N methyldiethanol amine and
The ethylenediamine for not having the volatility irritation used in volatile organic amine replacement original production big so that high temperature inhibition of the invention
The production and use operating process of agent are safer reliable, improve the safe class of production operation environment and raw material.It is used
Ricinoleic acid and stearic acid compounding, also improve and improve the inhibition efficiency and adaptability of high-temperature corrosion inhibitor, further make entire
Production technology and raw material are safer.
Secondly, preparation method provided by the invention considers each material performance, is joined by controlling different reaction conditions
Number control, it is final to obtain the stable and excellent high-temperature corrosion inhibitor of performance, reach best corrosion mitigating effect.Meanwhile system of the invention
In Preparation Method S3, by cooling down in advance, the mode of triethanolamine is added so that reaction temperature is easier to be controlled, and avoids anti-
It excessively should acutely lead to a large amount of unnecessary side reactions that temperature is difficult to control and is generated, reaction is avoided excessively acutely to lead to slug
The generation of phenomenon.In the preparation method S4 of the present invention, it is reduced to 100 DEG C or less to go again the temperature of intermediary three and industry is added in vain
The purpose of oil is from the point of view of technical white oil charging convenience and safety.
Description of the drawings
Fig. 1 is the process flow chart of the preparation method of high temperature corrosion inhibiter of the present invention.
Specific implementation mode
Below in conjunction with the accompanying drawings and specific embodiment is further explained the present invention.
In the present invention, unless otherwise instructed, described part all refers to parts by weight, and the percentage all refers to weight percent,
The reagent used is all industry ordinary commercial products, and used instrument and equipment is all industry universal instrument and equipment, is drawn
The term knot entered is generally understood in accordance with industry.It is normal during " high temperature " reference oilfield exploitation and petroleum refining process in the present invention
270 DEG C or more of state of temperature being in, espespecially for 270-330 DEG C and 350-380 DEG C of two temperature ranges.
Embodiment 1：
As shown in Figure 1, present embodiments providing a kind of high-temperature corrosion inhibitor for oilfield exploitation and petroleum refining process, have
Preparation is as follows：It weighs 6kg ricinoleic acids and 2kg stearic acid is uniformly mixed and obtains intermediary one.To the intermediary one
The middle N- methyl diethanols that 1.44kg is added, are warming up to 105 DEG C, and are maintained at 105~115 DEG C of stirring heat preservation 3h and obtain intermediary
Two.The intermediary two is cooled to 85 DEG C, the triethanolamine of 480g, the item of 105 DEG C of control are then added into intermediary two
Stirring heat preservation 1h, obtains intermediary three under part.The intermediary three is cooled to 100 DEG C, the industry that 2.8kg is then added is white
Oil keeps lasting stirring to drop to room temperature up to the high-temperature corrosion inhibitor of the present embodiment.
Embodiment 2：
Present embodiments provide a kind of high-temperature corrosion inhibitor for oilfield exploitation and petroleum refining process, specific preparation method
It is as follows：It weighs 7kg ricinoleic acids and 3kg stearic acid is uniformly mixed and obtains intermediary one.1.9kg is added into the intermediary one
N- methyl diethanols, be warming up to 110 DEG C, and be maintained at 105~115 DEG C stirring heat preservation 3.5h obtain intermediary two.It will be described
Intermediary two is cooled to 80 DEG C, and the triethanolamine of 700g is then added into intermediary two, stirs and protects under conditions of 110 DEG C of control
Warm 1.5h obtains intermediary three.The intermediary three is cooled to 95 DEG C, the technical white oil of 3.8kg is then added, keeps continuing
Stirring drops to room temperature up to the high-temperature corrosion inhibitor of the present embodiment.
Embodiment 3：
Present embodiments provide a kind of high-temperature corrosion inhibitor for oilfield exploitation and petroleum refining process, specific preparation method
It is as follows：It weighs 8kg ricinoleic acids and 4kg stearic acid is uniformly mixed and obtains intermediary one.2.4kg is added into the intermediary one
N- methyl diethanols, be warming up to 115 DEG C, and be maintained at 105~115 DEG C stirring heat preservation 3h obtain intermediary two.In described
Between object two be cooled to 80 DEG C, then into intermediary two be added 960g triethanolamine, control 115 DEG C under conditions of stir heat preservation
2h obtains intermediary three.The intermediary three is cooled to 90 DEG C, the technical white oil of 4.8kg is then added, keeps lasting stirring
Room temperature is dropped to up to the high-temperature corrosion inhibitor of the present embodiment.
Using《Oil and gas industry standard》In about corrosion inhibiter evaluation method to aforementioned three embodiments of the present invention
The corrosion inhibition rate of gained high-temperature corrosion inhibitor is analyzed and evaluated, and the corrosion inhibition rate of high-temperature corrosion inhibitor obtained by of the invention three embodiments is equal
97% or so.
The present invention is not limited to above-mentioned preferred forms, anyone can show that other are various under the inspiration of the present invention
The product of form, however, make any variation in its details, it is every that there is technical solution identical or similar to the present application,
It is within the scope of the present invention.
Claims (8)
1. the high-temperature corrosion inhibitor for oilfield exploitation and petroleum refining process, which is characterized in that the high-temperature corrosion inhibitor is by following
The raw material of parts by weight is made：
Raw material group A：2~4 parts of 6~8 parts of ricinoleic acid and stearic acid；
Raw material group B：N methyldiethanol amine, triethanolamine and technical white oil；The weight of the N methyldiethanol amine is described
0.18~0.2 times of raw material group A total weights, the weight of the triethanolamine are the 0.06~0.08 of the raw material group A total weights
Times, the weight of the technical white oil is 0.35~0.4 times of the raw material group A total weights.
2. high-temperature corrosion inhibitor according to claim 1, it is characterised in that：The ricinoleic acid is 7 parts by weight, the tristearin
Acid is 3 parts by weight；The N methyldiethanol amine is 1.9 parts by weight, and the triethanolamine is 0.7 parts by weight, and the industry is white
Oil is 3.8 parts by weight.
3. a kind of preparation method of high-temperature corrosion inhibitor as claimed in claim 1 or 2, which is characterized in that include the following steps：
S1, it ricinoleic acid and stearic acid is weighed is uniformly mixed and obtain intermediary one；
S2, it weighs N methyldiethanol amine and is added in the intermediary one and reacted, obtain intermediary two after completion of the reaction；
S3, it weighs triethanolamine and is added in the intermediary two and reacted, obtain intermediary three after completion of the reaction；
S4, it weighs technical white oil and is added in the intermediary three, stir evenly up to the high-temperature corrosion inhibitor.
4. the preparation method of high-temperature corrosion inhibitor according to claim 3, which is characterized in that the reaction temperature reacted described in S2
Degree is 105~115 DEG C, and the reaction time reacted described in S2 is 3~4h.
5. the preparation method of high-temperature corrosion inhibitor according to claim 3, which is characterized in that in S3：First by the intermediary
Two temperature be reduced to 85 DEG C hereinafter, adding the triethanolamine.
6. the preparation method of high-temperature corrosion inhibitor according to claim 5, which is characterized in that the reaction temperature reacted described in S3
Degree is 105~115 DEG C, and the reaction time reacted described in S3 is 1~2h.
7. the preparation method of high-temperature corrosion inhibitor according to claim 3, which is characterized in that in S4：First by the intermediary
Three temperature be reduced to 100 DEG C hereinafter, adding the technical white oil.
8. the preparation method of high-temperature corrosion inhibitor according to claim 7, which is characterized in that in S4：It is white that the industry is added
After oil, keeps being cooled to room temperature under lasting stirring, obtain the high-temperature corrosion inhibitor.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610814962.XA CN106433781B (en) | 2016-09-09 | 2016-09-09 | High-temperature corrosion inhibitor and preparation method thereof for oilfield exploitation and petroleum refining process |
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| CN201610814962.XA CN106433781B (en) | 2016-09-09 | 2016-09-09 | High-temperature corrosion inhibitor and preparation method thereof for oilfield exploitation and petroleum refining process |
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| CN106987842B (en) * | 2017-04-24 | 2019-03-26 | 西安石油大学 | A kind of high temperature resistant corrosion inhibitor and preparation method thereof |
| CN107021890A (en) * | 2017-04-27 | 2017-08-08 | 西安石油大学 | A kind of preparation method for suppressing oil acid corrosion high-temperature corrosion inhibitor |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1231280A (en) * | 1998-04-03 | 1999-10-13 | 大庆石油学院 | Nonionic surface active agent for tertiary oil recovery and productive method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1231280A (en) * | 1998-04-03 | 1999-10-13 | 大庆石油学院 | Nonionic surface active agent for tertiary oil recovery and productive method thereof |
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