CN102965148B - Water-soluble high-temperature corrosion inhibitor - Google Patents
Water-soluble high-temperature corrosion inhibitor Download PDFInfo
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- CN102965148B CN102965148B CN201210531543.7A CN201210531543A CN102965148B CN 102965148 B CN102965148 B CN 102965148B CN 201210531543 A CN201210531543 A CN 201210531543A CN 102965148 B CN102965148 B CN 102965148B
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Abstract
The invention discloses a water-soluble high-temperature corrosion inhibitor, which belongs to the technical field of metal corrosion and protection. The corrosion inhibitor disclosed by the invention is composed of the following components in percentage by mass: 6.5-7.6% of a boracic acid, 10-11.3% of glycerin, 7.9-9.2% of monoethanolamine, 20-40% of sulfonated castor oil, and the balance of water. The raw materials used in the invention are non-toxic, and have no side effects on products and the subsequent processing of products; the water-soluble high-temperature corrosion inhibitor disclosed by the invention is good in water-solubility, no cosolvent is not required to be added when the corrosion inhibitor is used in a formula, and no laying phenomenon occurs when the corrosion inhibitor is compounded with any organic amine, thereby facilitating a neutralization reaction between the corrosion inhibitor and a naphthenic acid in raw oil; and a rust-proof complex of the corrosion inhibitor in the invention and sulfonated castor oil can form a dense and firm protective film in a high-temperature tower, thereby effectively preventing the raw oil from eroding the inner wall of the tower.
Description
Technical field
The invention belongs to metal corrosion and protection technical field, be specifically related to a kind of water-soluble high-temperature inhibiter.
Background technology
Metal is used widely in industry as main equipment and materials, and the application of the corrosion and protection of metallic substance is increasingly extensive, and solving one of effective way of metallic material corrosion is exactly to adopt inhibiter to protect metal.
Naphthenic acid is a kind of organic acid containing saturated cyclic structure being extensively present in crude oil.In crude refining process, naphthenic acid causes the corrosion failure of refining equipment system and pipeline conventionally, and relevant with the total acid value (TAN) of course of processing Crude Oil, in the time that TAN is greater than 0.2, naphthenic acid corrodes at 200-400 DEG C, in the time that being greater than 0.5, TAN there is significantly corrosion, and particularly even more serious in the corrosion of the High Velocity Area such as high speed transfer line, ordinary decompression column of atmospheric and vacuum distillation unit.Domestic a lot of refinerys add the average T AN1.0 of crude oil at present, and naphthenic acid attracts great attention to the corrosion failure of equipment.Naphthenic acid not only produces harm to equipment to the corrosion failure of equipment, and secondary feeder apparatus is produced serious influence, when naphthenic acid corrosion, produce serious sour iron, metallic surface is had to very strong fine purifiation effect, FeS is brought into secondary feeder apparatus and catalyzer is produced to serious harm.
High-temperature corrosion inhibitor is many is at present made up of phosphorous acid, phosphoric acid salt or phosphoric acid ester, make simply, but addition is larger, and while experimental results show that independent use, corrosion mitigating effect is unsatisfactory.Some inhibiter raw materials are poisonous, certainly will cause certain pollution to environment, can not be applied on a large scale, and what have is even eliminated.Inhibiter mostly is oil soluble, and the dispersing property in stock oil is bad, be unfavorable for stock oil in naphthenic acid generation neutralization reaction, it is not very good causing corrosion mitigating effect.Moreover stock oil exists certain corrosion to tower wall or tube wall, and existing inhibiter can not address this problem well.
Summary of the invention
The object of the present invention is to provide a kind of water-soluble high-temperature inhibiter.
Object of the present invention can be achieved through the following technical solutions:
A kind of water-soluble high-temperature inhibiter, is characterized in that being made up of each component of following mass percent: boric acid 6.5-7.6%, glycerine 10-11.3%, monoethanolamine 7.9-9.2%, sulfonated castor oil 20-40%, surplus are water.
The mass percent of the each component of the present invention is preferably: boric acid 7.2%, glycerine 10.8%, monoethanolamine 8.4%, sulfonated castor oil 30%, water 43.6%.
Preparation method of the present invention is:
(1) preparation of antirust complex compound: accurately take in proportion water, boric acid, glycerine and add reactor, be warming up to 50-60 DEG C and add monoethanolamine, be then warming up to boiling, backflow 2-4h, is then cooled to 45-60 DEG C, antirust complex compound;
(2) batching: the antirust complexing agent suction reactor that sulfonated castor oil and step (1) are obtained, be warming up to 95-110 DEG C and stir 30min, be cooled to 50-40 DEG C, add water, stir water-soluble high-temperature inhibiter.
Beneficial effect of the present invention: the present invention is raw materials used nontoxic, has no side effect to product and product following process; Water-soluble high-temperature inhibiter good water solubility of the present invention, does when formula uses and does not need to add solubility promoter, with the composite phenomenon that all there will not be layering of any organic amine, is conducive to the naphthenic acid generation neutralization reaction in inhibiter and stock oil; Antirust complex compound of the present invention and sulfonated castor oil can form the protective membrane of compact and firm in high temperature tower, effectively prevent the erosion of stock oil to tower wall.
Embodiment
Below in conjunction with specific embodiment, the invention will be further described.
Embodiment 1
A kind of water-soluble high-temperature inhibiter, is made up of the material of mass percent below: boric acid 7.2%, glycerine 10.8%, monoethanolamine 8.4%, sulfonated castor oil 30%, water 43.6%.
A kind of preparation method of water-soluble high-temperature inhibiter is:
(1) preparation of antirust complex compound: accurately take in proportion 120kg water, 240kg boric acid, 360kg glycerine and add reactor, be warming up to 50 DEG C and add 280kg monoethanolamine, be then warming up to boiling, backflow 2h, then be cooled to 46 DEG C, antirust complex compound;
(2) batching: the antirust complexing agent suction reactor that 300kg sulfonated castor oil and 300kg step (1) are obtained, be warming up to 100 DEG C and stir 30min, be cooled to 50 DEG C, add 400kg water, stir water-soluble high-temperature inhibiter.
Embodiment 2
A kind of water-soluble high-temperature inhibiter, is made up of the material of mass percent below: boric acid 6.5%, glycerine 10.3%, monoethanolamine 7.9%, sulfonated castor oil 35%, water 40.3%.
A kind of preparation method of water-soluble high-temperature inhibiter is:
(1) preparation of antirust complex compound: accurately take in proportion 18kg water, 65kg boric acid, 103kg glycerine and add reactor, be warming up to 50 DEG C and add 79kg monoethanolamine, be then warming up to boiling, backflow 2h, is then cooled to 48 DEG C, antirust complex compound;
(2) batching: the antirust complexing agent suction reactor that 350kg sulfonated castor oil and 265kg step (1) are obtained, be warming up to 100 DEG C and stir 30min, be cooled to 50 DEG C, add 385kg water, stir water-soluble high-temperature inhibiter.
Embodiment 3
A kind of water-soluble high-temperature inhibiter, is made up of the material of mass percent below: boric acid 7.5%, glycerine 11%, monoethanolamine 8.1%, sulfonated castor oil 29%, water 44.4%.
A kind of preparation method of water-soluble high-temperature inhibiter is:
(1) preparation of antirust complex compound: accurately take in proportion 34kg water, 75kg boric acid, 110kg glycerine and add reactor, be warming up to 50 DEG C and add 81kg monoethanolamine, be then warming up to boiling, backflow 2h, is then cooled to 40 DEG C, antirust complex compound;
(2) batching: the antirust complexing agent suction reactor that 290kg sulfonated castor oil and 300kg step (1) are obtained, be warming up to 100 DEG C and stir 30min, be cooled to 50 DEG C, add 410kg water, stir water-soluble high-temperature inhibiter.
Embodiment 4
A kind of water-soluble high-temperature inhibiter, is made up of the material of mass percent below: boric acid 6.9%, glycerine 10.5%, monoethanolamine 8.8%, sulfonated castor oil 32%, water 41.8%.
A kind of preparation method of water-soluble high-temperature inhibiter is:
(1) preparation of antirust complex compound: accurately take in proportion 18kg water, 69kg boric acid, 105kg glycerine and add reactor, be warming up to 50 DEG C and add 88kg monoethanolamine, be then warming up to boiling, backflow 2h, is then cooled to 42 DEG C, antirust complex compound;
(2) batching: the antirust complexing agent suction reactor that 320kg sulfonated castor oil and 280kg step (1) are obtained, be warming up to 100 DEG C and stir 30min, be cooled to 50 DEG C, add 400kg water, stir water-soluble high-temperature inhibiter.
The character of the water-soluble high-temperature sustained release dosage that table 1 is prepared for the present invention.
The oil soluble high-temperature corrosion inhibitor that the present invention changes is in the past water-soluble high-temperature inhibiter, is conducive to the naphthenic acid generation neutralization reaction in inhibiter and stock oil, reduces naphthenic acid to corrosion of metal in device.
Antirust complex compound prepared by the present invention and sulfonated castor oil can form the protective membrane of compact and firm in high temperature tower, limitedly prevent the erosion of stock oil to tower wall.
The raw materials used non-toxic and safe of the present invention, does not affect catalyzer, can not cause poisoning of catalyst, and product and product following process are had no side effect.
Product of the present invention is a kind of complex compound of boracic; be equipped with a certain proportion of sulfonated castor oil; although be water-soluble products, the rising in high temperature section along with oil content, the evaporation of solvent water; oil-soluble solute can mix with raw material; play and stock oil in acidic substance, as naphthenic acid, simultaneously easy decomposition and degeneration not; on tower, inside pipe wall metal covering, form complete preservation film, the annual corrosion rate of equipment generally can decline 75%.
Claims (2)
1. a water-soluble high-temperature inhibiter, is characterized in that, described water-soluble high-temperature inhibiter is prepared by following methods step:
(1) preparation of antirust complex compound: take boric acid, glycerine, water and add reactor, be warming up to 50-60 DEG C and add monoethanolamine, be then warming up to boiling, backflow 2-4h, is then cooled to 45-60 DEG C, antirust complex compound;
(2) batching: the antirust complexing agent suction reactor that sulfonated castor oil and step (1) are obtained, be warming up to 95-110 DEG C and stir 30min, be cooled to 50-40 DEG C, add water, stir water-soluble high-temperature inhibiter, wherein, the mass percent of each component is boric acid 6.5-7.6%, glycerine 10-11.3%, monoethanolamine 7.9-9.2%, sulfonated castor oil 20-40%, water surplus.
2. water-soluble high-temperature inhibiter according to claim 1, is characterized in that, the mass percent of each component is preferably: boric acid 7.2%, glycerine 10.8%, monoethanolamine 8.4%, sulfonated castor oil 30%, water 43.6%.
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| CN201210531543.7A CN102965148B (en) | 2012-12-11 | 2012-12-11 | Water-soluble high-temperature corrosion inhibitor |
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| CN201210531543.7A CN102965148B (en) | 2012-12-11 | 2012-12-11 | Water-soluble high-temperature corrosion inhibitor |
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| CN102965148A CN102965148A (en) | 2013-03-13 |
| CN102965148B true CN102965148B (en) | 2014-06-25 |
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| CN114276788A (en) * | 2021-12-29 | 2022-04-05 | 格林生态环境有限公司 | Buffer solution for electromagnetic heating system and preparation method and application thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0768327A2 (en) * | 1990-03-02 | 1997-04-16 | Kansai Paint Co., Ltd. | Coating resin composition |
| CN1730634A (en) * | 2005-08-02 | 2006-02-08 | 广州机械科学研究院 | Extreme pressure cutting fuild microemulsion free of chlorine and its preparation method and uses |
| RU2303652C1 (en) * | 2006-07-20 | 2007-07-27 | Сергей Михайлович Гайдар | Metal corrosion inhibitor |
| CN102643300A (en) * | 2012-04-14 | 2012-08-22 | 修建东 | Method for preparing hydroxylated sulfonated castor oil borate |
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2012
- 2012-12-11 CN CN201210531543.7A patent/CN102965148B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0768327A2 (en) * | 1990-03-02 | 1997-04-16 | Kansai Paint Co., Ltd. | Coating resin composition |
| CN1730634A (en) * | 2005-08-02 | 2006-02-08 | 广州机械科学研究院 | Extreme pressure cutting fuild microemulsion free of chlorine and its preparation method and uses |
| RU2303652C1 (en) * | 2006-07-20 | 2007-07-27 | Сергей Михайлович Гайдар | Metal corrosion inhibitor |
| CN102643300A (en) * | 2012-04-14 | 2012-08-22 | 修建东 | Method for preparing hydroxylated sulfonated castor oil borate |
Non-Patent Citations (4)
| Title |
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| 杨启如等.油酸二乙醇酰胺硼酸酯对钢铁缓蚀性能的影响.《材料保护》.2002,第35卷(第02期),21-25. |
| 油酸二乙醇酰胺硼酸酯对钢铁缓蚀性能的影响;杨启如等;《材料保护》;20020228;第35卷(第02期);21-25 * |
| 环保型油酸二乙醇酰胺硼酸酯制备及其在切削液中的防腐抗锈性能研究;袁昊等;《上海第二工业大学学报》;20050331;第22卷(第01期);36-39 * |
| 袁昊等.环保型油酸二乙醇酰胺硼酸酯制备及其在切削液中的防腐抗锈性能研究.《上海第二工业大学学报》.2005,第22卷(第01期),36-39. |
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