CN110016670A - Antioxygen corrosion inhibiter - Google Patents
Antioxygen corrosion inhibiter Download PDFInfo
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- CN110016670A CN110016670A CN201910423677.9A CN201910423677A CN110016670A CN 110016670 A CN110016670 A CN 110016670A CN 201910423677 A CN201910423677 A CN 201910423677A CN 110016670 A CN110016670 A CN 110016670A
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- corrosion inhibiter
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- antioxygen
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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
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- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
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- Organic Chemistry (AREA)
- Preventing Corrosion Or Incrustation Of Metals (AREA)
Abstract
The invention discloses a kind of antioxygen corrosion inhibiter, are prepared by following methods: by dicyanodiamine, catalyst, zeolite investment reaction kettle, dichloropropane are added, obtains intermediate；By starch gelatinization, acrylamide is added, is continuously added into initiator in whipping process, obtains copolymer；Intermediate, copolymer, benzotriazole, sulfide, silicate are successively put into reaction kettle, stir, be cooled to room temperature to get.The present invention can effectively prevent erosion of the wastewater media to oil and gas equipment and gathering line, have excellent high temperature antioxygen property in the protective film of the defeated pipeline surface formation compact and firm of oil and gas equipment sum aggregate in moist hot environment.
Description
Technical field
The present invention relates to Petroleum Processing Technology fields.It is more particularly related to a kind of antioxygen corrosion inhibiter.
Background technique
After oil field enters high water-cut stage, the dissolved oxygen that oilfield sewage contains often is formed oil and gas equipment and gathering line
Electrochemical corrosion or microbiologic(al) corrosion cause corrosion failure in sewerage to continuously emerge.The oxygen of usual extremely low concentration (is lower than
It can 1mg/L) cause extremely serious corrosion.If there are HCO in wastewater media3 -Or CO2, oxygen can make their corrosion impatient
Increase severely big, cause the defeated pipeline corrosion of oil and gas equipment sum aggregate, or even cause the corrosion fracture of oil pipe, that shortens oil/gas well uses the longevity
Life, causes huge economic loss.
The measure for oil and gas equipment and gathering line oxygen corrosion has much at present, such as carries out coating treatment, yin to pipeline
Pole Protection Code uses special corrosion agent etc..Use antioxygen corrosion inhibiter as a kind of simple, effective, cheap safeguard procedures, in oil
Tanaka's is most widely used.Traditional antioxygen inhibiter consumption is big, at high cost, and can accelerate when dosage is lower than critical concentration
Local spot corrosion.
Summary of the invention
It is an object of the invention to solve at least the above problems, and provide the advantages of at least will be described later.
It is a still further object of the present invention to provide a kind of antioxygen corrosion inhibiter, can set in the oil gas in moist hot environment
The standby defeated pipeline surface of sum aggregate forms the protective film of compact and firm, and wastewater media is effectively prevent to invade oil and gas equipment and gathering line
Erosion has excellent high temperature antioxygen property.
In order to realize these purposes and other advantages according to the present invention, a kind of antioxygen corrosion inhibiter is provided, by with lower section
Method is prepared:
By in dicyanodiamine, catalyst, zeolite investment reaction kettle, stirring is warming up to 120 DEG C, and dichloropropane is added, stirs
It mixes, is warming up to 140 DEG C, keep the temperature 2h, be warming up to 180 DEG C, keep the temperature 1h, be warming up to 200 DEG C, be subsequently passed inert gas to 1MPa,
Heat-insulation pressure keeping 1h is discharged inert gas, makes pressure recovery to atmospheric pressure, be cooled to lower than 50 DEG C, obtain intermediate, wherein dicyan
The molar ratio of diamines and dichloropropane is 1:1.2；
Starch is gelatinized at 70 DEG C, is cooled to room temperature, acrylamide is added, is continuously added into initiator in whipping process, into
Row redox reaction, it is cooling, ethanol precipitation is added, taking precipitate is dried in vacuo to obtain powder, powder redissolved in acetone,
Extracting, takes extract, is dried in vacuo, obtains copolymer；
Intermediate, copolymer, benzotriazole, sulfide, silicate that weight ratio is 3:3:0.5:1:1 are successively put into
In reaction kettle, in 50-60 DEG C of stirring 4h, be cooled to room temperature to get.
Preferably, catalyst is activated alumina and sulfonic acid.
Preferably, initiator is ammonium sulfate-sodium hydrogensulfite.
Preferably, sulfide is thiocarbamide.
Preferably, the addition speed of dichloropropane is 10mL/min.
Preferably, vacuum drying temperature is 50 DEG C.
The present invention is include at least the following beneficial effects: the present invention prepares intermediate, starch by dicyanodiamine, dichloropropane
Modified propylene amide, the two are compounded with benzotriazole, thiocarbamide, silicate, and compatibility is good, and the antioxygen corrosion inhibiter of preparation is in humidity
The defeated pipeline surface of oil and gas equipment sum aggregate in hot environment forms the protective film of compact and firm, effectively prevent wastewater media to oil gas
The erosion of equipment and gathering line has excellent high temperature antioxygen property.
Further advantage, target and feature of the invention will be partially reflected by the following instructions, and part will also be by this
The research and practice of invention and be understood by the person skilled in the art.
Specific embodiment
Below with reference to example, the present invention is described in further detail, to enable those skilled in the art referring to specification text
Word can be implemented accordingly.
It should be noted that experimental method described in following embodiments is unless otherwise specified conventional method, institute
Reagent and material are stated, unless otherwise specified, is commercially obtained.
<example 1>
Antioxygen corrosion inhibiter, is prepared by following methods:
By in dicyanodiamine, activated alumina, sulfonic acid, zeolite investment reaction kettle, stirring is warming up to 120 DEG C, and dichloro is added
Propane, addition speed are 10mL/min, and stirring is warming up to 140 DEG C, keeps the temperature 2h, is warming up to 180 DEG C, keep the temperature 1h, are warming up to 200
DEG C, inert gas is subsequently passed to 1MPa, heat-insulation pressure keeping 1h, and inert gas is discharged, makes pressure recovery to atmospheric pressure, is cooled to low
In 50 DEG C, intermediate is obtained, wherein dicyanodiamine and the molar ratio of dichloropropane are 1:1.2；
Starch is gelatinized at 70 DEG C, is cooled to room temperature, acrylamide is added, is continuously added into ammonium sulfate-Asia in whipping process
Sodium bisulfate carries out redox reaction, cooling, ethanol precipitation is added, taking precipitate, 50 DEG C are dried in vacuo to obtain powder, by powder
Body redissolves in acetone, extracting, takes extract, and 50 DEG C of vacuum drying obtain copolymer；
Intermediate, copolymer, benzotriazole, thiocarbamide, silicate that weight ratio is 3:3:0.5:1:1 are successively put into instead
Answer in kettle, in 50-60 DEG C of stirring 4h, be cooled to room temperature to get.
<comparative example 1>
Antioxygen corrosion inhibiter, is prepared by following methods:
By in dicyanodiamine, activated alumina, sulfonic acid, zeolite investment reaction kettle, stirring is warming up to 120 DEG C, and dichloro is added
Propane, addition speed are 10mL/min, and stirring is warming up to 140 DEG C, keeps the temperature 2h, is warming up to 180 DEG C, keep the temperature 1h, are warming up to 200
DEG C, inert gas is subsequently passed to 1MPa, heat-insulation pressure keeping 1h, and inert gas is discharged, makes pressure recovery to atmospheric pressure, is cooled to low
In 50 DEG C, intermediate is obtained, wherein dicyanodiamine and the molar ratio of dichloropropane are 1:1.2；
Intermediate, benzotriazole, thiocarbamide, silicate that weight ratio is 3:0.5:1:1 are successively put into reaction kettle,
50-60 DEG C of stirring 4h, be cooled to room temperature to get.
<comparative example 2>
Antioxygen corrosion inhibiter, is prepared by following methods:
By in dicyanodiamine, activated alumina, sulfonic acid, zeolite investment reaction kettle, stirring is warming up to 120 DEG C, and dichloro is added
Propane, addition speed are 10mL/min, and stirring is warming up to 200 DEG C, keep the temperature 4h, are cooled to lower than 50 DEG C, obtain intermediate, wherein
Dicyanodiamine and the molar ratio of dichloropropane are 1:1.2；
Starch is gelatinized at 70 DEG C, is cooled to room temperature, acrylamide is added, is continuously added into ammonium sulfate-Asia in whipping process
Sodium bisulfate carries out redox reaction, cooling, ethanol precipitation is added, taking precipitate, 50 DEG C are dried in vacuo to obtain powder, by powder
Body redissolves in acetone, extracting, takes extract, and 50 DEG C of vacuum drying obtain copolymer；
Intermediate, copolymer, benzotriazole, thiocarbamide, silicate that weight ratio is 3:3:0.5:1:1 are successively put into instead
Answer in kettle, in 50-60 DEG C of stirring 4h, be cooled to room temperature to get.
<corrosion mitigating effect test>
With reference to SY/T 5273-2014 be testing standard, test material be Q235 steel disc, specification be 50mm × 13mm ×
1.5mm is handled using 60-90 DEG C of petroleum ether degreasing, immerses dehydrated alcohol again after wiping removal surface grease using absorbent cotton
The further degreasing dehydration of 5-10min is impregnated, takes out and is dried with filter paper, wrapped after air-drying with filter paper, be placed in 1h in drier and exist
Example 1, comparative example 1-2, commercially available JHJ corrosion inhibiter are added in corrosive medium, test piece is suspended in corrosive medium with nylon rope, is being made
The method of the mass change of test piece is measured after the fixed time to measure the inhibition degree for measuring test piece extent of corrosion and corrosion inhibiter.It examines
Examining variable is corrosion inhibiter mass concentration, corrosion temperature, etching time.Corrosive medium simulation oil field production of water corrosive medium, 1% oxygen
Content condition, as shown in table 1.
Table 1
| CaCl2 | MgCl2·6H2O | KCl | NaCl | NaHCO3 | Na2SO4 |
| 3g/L | 2g/L | 1g/L | 23g/L | 0.4g/L | 0.2g/L |
Corrosion inhibition rate calculation formula η=(△ m0-△m1)/△m0× 100%, wherein η is corrosion inhibition rate, %；△m0For blank examination
The mass loss of piece, unit g；△m1For corrosion inhibiter test piece mass loss, unit g is added.
As shown in table 2, at 80 DEG C, the example 1 of different quality concentration, comparative example 1-2, commercially available is added into corrosive medium
JHJ corrosion inhibiter, with the increase of the mass concentration of corrosion inhibiter in corrosive medium, the corrosion inhibition rate of corrosion inhibition rate for 24 hours of each group is increased, and works as reality
1 mass concentration of example reaches 15mgL-1When, corrosion inhibition rate reaches 82%, and subsequent tendency is more gentle, illustrates that mass concentration exists
15mg·L-1When can reach preferable effect, example 1 compared to comparative example 1-2, the commercially available optimal corrosion inhibition rate of JHJ corrosion inhibiter compared with
Mass concentration that is high and reaching is low, illustrates that the product that a small amount of example 1 is added in corrosive medium has preferable corrosion mitigating effect.
Table 2
As shown in table 3, at 80 DEG C, 15mgL is added into corrosive medium-1Example 1, comparative example 1-2, commercially available JHJ it is slow
Agent is lost, the corrosion inhibition rate within the time of 0-12h of example 1 improves fast speed, and when 16h is basicly stable, and comparative example 1, commercially available JHJ are in 0-
Corrosion inhibition rate improves fast speed in the time of 16h, and when 20h is basicly stable, and the corrosion inhibition rate increase rate of comparative example 2 is more gentle,
Within the time of 0-20h corrosion inhibition rate improve fast speed, for 24 hours when it is basicly stable.
Table 3
As shown in table 4,15mgL is added into corrosive medium-1Example 1, comparative example 1-2, commercially available JHJ corrosion inhibiter, leaching
After steeping for 24 hours, with the rising of temperature, more gentle, the example of corrosion inhibition rate variation of example 1, comparative example 1-2, commercially available JHJ corrosion inhibiter
1 optimal corrosion inhibition rate is better than comparative example 1-2.Product prepared by example 1 is more preferable compared to the adsorptivity of reference substance.With temperature
Rise, molecular motion rate is accelerated, and product prepared by example 1 is adsorbed on the generation conversion of steel disc surface, polymerization forms film, coordinate bond
Combination it is more firm.
Table 4
Number of devices and treatment scale described herein are for simplifying explanation of the invention.To application of the invention,
Modifications and variations will be readily apparent to persons skilled in the art.
Although the embodiments of the present invention have been disclosed as above, but its is not only in the description and the implementation listed
With it can be fully applied to various fields suitable for the present invention, for those skilled in the art, can be easily
Realize other modification, therefore without departing from the general concept defined in the claims and the equivalent scope, the present invention is simultaneously unlimited
In specific details and example shown and described herein.
Claims (6)
1. antioxygen corrosion inhibiter, which is characterized in that be prepared by following methods:
By in dicyanodiamine, catalyst, zeolite investment reaction kettle, stirring is warming up to 120 DEG C, and dichloropropane is added, and stirs, and rises
Temperature keeps the temperature 2h to 140 DEG C, is warming up to 180 DEG C, keeps the temperature 1h, is warming up to 200 DEG C, is subsequently passed inert gas to 1MPa, heat preservation is protected
Press 1h, be discharged inert gas, make pressure recovery to atmospheric pressure, be cooled to lower than 50 DEG C, obtain intermediate, wherein dicyanodiamine with
The molar ratio of dichloropropane is 1:1.2；
Starch is gelatinized at 70 DEG C, is cooled to room temperature, acrylamide is added, initiator is continuously added into whipping process, carries out oxygen
Change reduction reaction, it is cooling, ethanol precipitation is added, taking precipitate is dried in vacuo to obtain powder, powder redissolved in acetone, extracting,
Extract is taken, is dried in vacuo, obtains copolymer；
Intermediate, copolymer, benzotriazole, sulfide, silicate that weight ratio is 3:3:0.5:1:1 are successively put into reaction
In kettle, in 50-60 DEG C of stirring 4h, be cooled to room temperature to get.
2. antioxygen corrosion inhibiter as described in claim 1, which is characterized in that catalyst is activated alumina and sulfonic acid.
3. antioxygen corrosion inhibiter as described in claim 1, which is characterized in that initiator is ammonium sulfate-sodium hydrogensulfite.
4. antioxygen corrosion inhibiter as described in claim 1, which is characterized in that sulfide is thiocarbamide.
5. antioxygen corrosion inhibiter as described in claim 1, which is characterized in that the addition speed of dichloropropane is 10mL/min.
6. antioxygen corrosion inhibiter as described in claim 1, which is characterized in that vacuum drying temperature is 50 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910423677.9A CN110016670B (en) | 2019-05-21 | 2019-05-21 | Antioxidant corrosion inhibitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910423677.9A CN110016670B (en) | 2019-05-21 | 2019-05-21 | Antioxidant corrosion inhibitor |
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| CN110016670A true CN110016670A (en) | 2019-07-16 |
| CN110016670B CN110016670B (en) | 2021-06-22 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1715450A (en) * | 2004-06-29 | 2006-01-04 | 上海万森水处理有限公司 | Acid corrosion inhibitor |
| CN101974762A (en) * | 2010-11-03 | 2011-02-16 | 西南林业大学 | Environment-friendly metal corrosion inhibitor and preparation method thereof |
| CN102321464A (en) * | 2011-07-15 | 2012-01-18 | 中国石油天然气股份有限公司 | Corrosion and scale inhibitor for oil well in high water-cut period |
| CN105461085A (en) * | 2016-01-07 | 2016-04-06 | 万全军 | Non-phosphorus environmentally-friendly corrosion-inhibition scale-inhibition dispersion agent and preparation method and application thereof |
-
2019
- 2019-05-21 CN CN201910423677.9A patent/CN110016670B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1715450A (en) * | 2004-06-29 | 2006-01-04 | 上海万森水处理有限公司 | Acid corrosion inhibitor |
| CN101974762A (en) * | 2010-11-03 | 2011-02-16 | 西南林业大学 | Environment-friendly metal corrosion inhibitor and preparation method thereof |
| CN102321464A (en) * | 2011-07-15 | 2012-01-18 | 中国石油天然气股份有限公司 | Corrosion and scale inhibitor for oil well in high water-cut period |
| CN105461085A (en) * | 2016-01-07 | 2016-04-06 | 万全军 | Non-phosphorus environmentally-friendly corrosion-inhibition scale-inhibition dispersion agent and preparation method and application thereof |
Non-Patent Citations (1)
| Title |
|---|
| 张雪梅等: ""2-种四唑衍生物缓蚀剂在碱性介质中对铜的缓蚀性能的和吸附行为"", 《材料保护》 * |
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