CN116334628A - Vapor phase corrosion inhibitor suitable for high-temperature gas cooled reactor steam generator and preparation method thereof - Google Patents
Vapor phase corrosion inhibitor suitable for high-temperature gas cooled reactor steam generator and preparation method thereof Download PDFInfo
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- 238000005260 corrosion Methods 0.000 title claims abstract description 185
- 230000007797 corrosion Effects 0.000 title claims abstract description 184
- 239000003112 inhibitor Substances 0.000 title claims abstract description 131
- 239000012808 vapor phase Substances 0.000 title claims abstract description 38
- 238000002360 preparation method Methods 0.000 title abstract description 14
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims abstract description 48
- 230000005764 inhibitory process Effects 0.000 claims abstract description 25
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims abstract description 24
- 239000004094 surface-active agent Substances 0.000 claims abstract description 16
- REYJJPSVUYRZGE-UHFFFAOYSA-N Octadecylamine Chemical group CCCCCCCCCCCCCCCCCCN REYJJPSVUYRZGE-UHFFFAOYSA-N 0.000 claims abstract description 14
- DAJSVUQLFFJUSX-UHFFFAOYSA-M sodium;dodecane-1-sulfonate Chemical compound [Na+].CCCCCCCCCCCCS([O-])(=O)=O DAJSVUQLFFJUSX-UHFFFAOYSA-M 0.000 claims abstract description 13
- 239000000203 mixture Substances 0.000 claims abstract description 11
- NWZBFJYXRGSRGD-UHFFFAOYSA-M sodium;octadecyl sulfate Chemical group [Na+].CCCCCCCCCCCCCCCCCCOS([O-])(=O)=O NWZBFJYXRGSRGD-UHFFFAOYSA-M 0.000 claims abstract description 10
- 239000004254 Ammonium phosphate Substances 0.000 claims abstract description 8
- 229910000148 ammonium phosphate Inorganic materials 0.000 claims abstract description 8
- 235000019289 ammonium phosphates Nutrition 0.000 claims abstract description 8
- GTLQZNKUEFUUIS-UHFFFAOYSA-N carbonic acid;cyclohexanamine Chemical compound OC(O)=O.NC1CCCCC1 GTLQZNKUEFUUIS-UHFFFAOYSA-N 0.000 claims abstract description 8
- MNNHAPBLZZVQHP-UHFFFAOYSA-N diammonium hydrogen phosphate Chemical compound [NH4+].[NH4+].OP([O-])([O-])=O MNNHAPBLZZVQHP-UHFFFAOYSA-N 0.000 claims abstract description 8
- WXMKPNITSTVMEF-UHFFFAOYSA-M sodium benzoate Chemical compound [Na+].[O-]C(=O)C1=CC=CC=C1 WXMKPNITSTVMEF-UHFFFAOYSA-M 0.000 claims abstract description 8
- 235000010234 sodium benzoate Nutrition 0.000 claims abstract description 8
- 239000004299 sodium benzoate Substances 0.000 claims abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 54
- 239000012153 distilled water Substances 0.000 claims description 48
- 238000003756 stirring Methods 0.000 claims description 30
- 238000000034 method Methods 0.000 claims description 17
- GLDSGGKXZDXGST-UHFFFAOYSA-N cyclohexylazanium;dihydrogen phosphate Chemical compound OP(O)(O)=O.NC1CCCCC1 GLDSGGKXZDXGST-UHFFFAOYSA-N 0.000 claims description 11
- 238000010438 heat treatment Methods 0.000 claims description 11
- PIICEJLVQHRZGT-UHFFFAOYSA-N Ethylenediamine Chemical compound NCCN PIICEJLVQHRZGT-UHFFFAOYSA-N 0.000 claims description 6
- 125000000383 tetramethylene group Chemical group [H]C([H])([*:1])C([H])([H])C([H])([H])C([H])([H])[*:2] 0.000 claims description 6
- MGRVRXRGTBOSHW-UHFFFAOYSA-N (aminomethyl)phosphonic acid Chemical compound NCP(O)(O)=O MGRVRXRGTBOSHW-UHFFFAOYSA-N 0.000 claims description 3
- DBMJMQXJHONAFJ-UHFFFAOYSA-M Sodium laurylsulphate Chemical compound [Na+].CCCCCCCCCCCCOS([O-])(=O)=O DBMJMQXJHONAFJ-UHFFFAOYSA-M 0.000 claims description 3
- 239000012752 auxiliary agent Substances 0.000 claims 3
- 238000005303 weighing Methods 0.000 claims 1
- 239000012071 phase Substances 0.000 abstract description 40
- 229910052751 metal Inorganic materials 0.000 abstract description 31
- 239000002184 metal Substances 0.000 abstract description 31
- 230000007774 longterm Effects 0.000 abstract description 10
- 150000002739 metals Chemical class 0.000 abstract description 9
- 230000000694 effects Effects 0.000 abstract description 4
- 239000007789 gas Substances 0.000 description 15
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 8
- 238000006243 chemical reaction Methods 0.000 description 8
- 238000012360 testing method Methods 0.000 description 8
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 5
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- 230000008569 process Effects 0.000 description 4
- 239000011780 sodium chloride Substances 0.000 description 4
- 239000000654 additive Substances 0.000 description 3
- IAANMKMHMYZVOC-UHFFFAOYSA-N aminomethyl dihydrogen phosphate Chemical compound NCOP(O)(O)=O IAANMKMHMYZVOC-UHFFFAOYSA-N 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 239000003153 chemical reaction reagent Substances 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 2
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- 125000001165 hydrophobic group Chemical group 0.000 description 2
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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
- C23F11/02—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in air or gases by adding vapour phase inhibitors
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Abstract
本发明提供了一种适用于高温气冷堆蒸汽发生器的气相缓蚀剂及其制备方法，该气相缓蚀剂包括如下组分：主缓蚀剂50～70wt％、磷酸类缓蚀剂20～40wt％、表面活性剂2～5wt％、缓蚀助剂5～10wt％，以重量百分比计；其中，所述主缓蚀剂为碳酸环己胺、苯甲酸钠和磷酸铵的混合物；所述表面活性剂为十八烷基硫酸钠或十二烷基磺酸钠；所述缓蚀助剂为十八胺。本发明的气相缓蚀剂具有良好的缓蚀效果，且其与金属的相容性好，可以实现对金属的长期防锈保护，且该气相缓蚀剂制备工艺简单，易操作。The invention provides a gas-phase corrosion inhibitor suitable for high-temperature gas-cooled reactor steam generators and a preparation method thereof. The gas-phase corrosion inhibitor includes the following components: 50-70 wt% of the main corrosion inhibitor, 20 wt% of the phosphoric acid corrosion inhibitor ～40wt%, surfactant 2～5wt%, corrosion inhibitor 5～10wt%, by weight percentage; Wherein, the main corrosion inhibitor is the mixture of cyclohexylamine carbonate, sodium benzoate and ammonium phosphate; The surfactant is sodium octadecylsulfate or sodium dodecylsulfonate; the corrosion inhibitor is octadecylamine. The vapor phase corrosion inhibitor of the invention has good corrosion inhibition effect and good compatibility with metals, can realize long-term antirust protection for metals, and the gas phase corrosion inhibitor has a simple preparation process and is easy to operate.
Description
技术领域technical field
本发明属于气相防锈技术领域，具体地，本发明涉及一种适用于高温气冷堆蒸汽发生器的气相缓蚀剂及其制备方法。The invention belongs to the technical field of gas-phase antirust, in particular, the invention relates to a gas-phase corrosion inhibitor suitable for high-temperature gas-cooled reactor steam generators and a preparation method thereof.
背景技术Background technique
蒸汽发生器采用组件式设计结构，每个蒸汽发生器由多个换热组件构成，每个换热组件有多根换热管，换热管布置在外套筒与中心管之间的环形空间。蒸汽发生器换热管采用螺旋结构，每个换热单元共由多层螺旋管式换热管组成。因此，高温气冷堆蒸汽发生器对防腐的要求较高，须有效地避免因腐蚀产物在传热管中积累导致蒸汽发生器传热管应力腐蚀开裂事件。The steam generator adopts a modular design structure. Each steam generator is composed of multiple heat exchange components. Each heat exchange component has multiple heat exchange tubes. The heat exchange tubes are arranged in the annular space between the outer sleeve and the center tube. The steam generator heat exchange tube adopts a spiral structure, and each heat exchange unit is composed of multi-layer spiral tube heat exchange tubes. Therefore, the high-temperature gas-cooled reactor steam generator has high requirements for corrosion protection, and it is necessary to effectively avoid the stress corrosion cracking of the heat transfer tube of the steam generator caused by the accumulation of corrosion products in the heat transfer tube.
同时，高温气冷堆为提高经济性，通常为双堆或多堆带一机形式，即两个或多个蒸汽发生器产生的蒸汽驱动一个汽轮发电机。高温气冷堆在运行过程中，单个反应堆故障需要停堆检修时，对应的蒸汽发生器二次侧就要处于保养状态，避免内部腐蚀。At the same time, in order to improve the economy, the high-temperature gas-cooled reactor is usually in the form of double stacks or multiple stacks with one machine, that is, the steam generated by two or more steam generators drives a turbo-generator. During the operation of the high-temperature gas-cooled reactor, when a single reactor fails and needs to be shut down for maintenance, the secondary side of the corresponding steam generator must be in a state of maintenance to avoid internal corrosion.
近年来，气相缓蚀剂发展迅速且应用比较广泛，与常规的防腐方法比较，气相缓蚀剂的主要优点在于它可以通过气相传播到达金属的全表面，包括缝隙等窄小的部位，非常适用于处于检修状态或密闭的管线和设备。然而随着气相防锈技术的应用发展，人们对气相缓蚀剂的缓蚀性能以及与金属的相容性都提出了更高的要求，因此，迫切需要开发出一些缓蚀性能好，且与金属的相容性好的气相缓蚀剂，以实现对金属进行长期有效的防锈保护。In recent years, gas-phase corrosion inhibitors have developed rapidly and are widely used. Compared with conventional anti-corrosion methods, the main advantage of gas-phase corrosion inhibitors is that they can reach the entire surface of the metal through gas phase transmission, including narrow parts such as gaps, which are very suitable For pipelines and equipment that are under maintenance or closed. However, with the application and development of vapor phase antirust technology, people put forward higher requirements for the corrosion inhibition performance of vapor phase corrosion inhibitors and the compatibility with metals. Vapor-phase corrosion inhibitor with good metal compatibility to achieve long-term and effective anti-rust protection for metals.
发明内容Contents of the invention
本发明旨在至少在一定程度上解决相关技术中的技术问题之一。为此，本发明实施例提出一种适用于高温气冷堆蒸汽发生器的气相缓蚀剂及其制备方法，以提高高温气冷堆蒸汽发生器的防锈性能，使其可以实现对高温气冷堆蒸汽发生器进行长期的防锈保护。The present invention aims to solve one of the technical problems in the related art at least to a certain extent. For this reason, the embodiment of the present invention proposes a gas-phase corrosion inhibitor suitable for high-temperature gas-cooled reactor steam generators and its preparation method, in order to improve the antirust performance of high-temperature gas-cooled reactor steam generators, so that it can Cold-stack steam generators for long-term rust protection.
本发明实施例一方面提出一种适用于高温气冷堆蒸汽发生器的气相缓蚀剂，包括如下组分：主缓蚀剂50～70wt％、磷酸类缓蚀剂20～40wt％、表面活性剂2～5wt％、缓蚀助剂5～10wt％，以重量百分比计；On the one hand, the embodiment of the present invention proposes a gas-phase corrosion inhibitor suitable for high-temperature gas-cooled reactor steam generators, including the following components: 50-70wt% of the main corrosion inhibitor, 20-40wt% of the phosphoric acid corrosion inhibitor, surface active 2～5wt% of additives, 5～10wt% of corrosion inhibitors, calculated by weight percentage;
其中，所述主缓蚀剂为碳酸环己胺、苯甲酸钠和磷酸铵的混合物；Wherein, the main corrosion inhibitor is a mixture of cyclohexylamine carbonate, sodium benzoate and ammonium phosphate;
所述表面活性剂为十八烷基硫酸钠或十二烷基磺酸钠；Described tensio-active agent is sodium octadecyl sulfate or sodium dodecyl sulfate;
所述缓蚀助剂为十八胺。The corrosion inhibitor is octadecylamine.
本发明实施例提供的气相缓蚀剂中，主缓蚀剂、磷酸类缓蚀剂、表面活性剂和缓蚀助剂之间相互促进，大大提高了缓蚀效果，可以有效抑制金属的腐蚀；且采用十八胺作为缓蚀助剂，由于其不溶于水，可在金属表面形成一层单分子或多分子膜，从而起到屏障隔离的作用，使水中的溶解氧不能同金属表面接触，避免了金属的腐蚀；且十八胺成膜均匀，保护时间长，在密封不严的情况下也可发挥缓蚀作用。Among the vapor phase corrosion inhibitors provided in the embodiments of the present invention, the main corrosion inhibitor, phosphoric acid corrosion inhibitor, surfactant and corrosion inhibition additives promote each other, which greatly improves the corrosion inhibition effect and can effectively inhibit the corrosion of metals; and Octadecylamine is used as a corrosion inhibitor. Because it is insoluble in water, it can form a layer of monomolecular or multimolecular film on the metal surface, thereby playing the role of barrier isolation, so that the dissolved oxygen in the water cannot contact the metal surface and avoid corrosion. corrosion of metals; and octadecylamine has a uniform film formation and long protection time, and can also play a role in corrosion inhibition in the case of poor sealing.
在本发明的一些实施例中，所述碳酸环己胺与所述苯甲酸钠、所述磷酸铵的质量比为2:(1.5～2):1，优选为2:1.5:1。In some embodiments of the present invention, the mass ratio of the cyclohexylamine carbonate to the sodium benzoate and the ammonium phosphate is 2:(1.5-2):1, preferably 2:1.5:1.
在本发明的一些实施例中，所述磷酸类缓蚀剂为磷酸环己胺、乙二胺四亚甲基磷酸或氨甲基膦酸中的任一种，优选为磷酸环己胺。In some embodiments of the present invention, the phosphoric acid corrosion inhibitor is any one of cyclohexylamine phosphate, ethylenediamine tetramethylene phosphoric acid or aminomethylphosphonic acid, preferably cyclohexylamine phosphate.
在本发明的一些实施例中，所述表面活性剂优选为十二烷基磺酸钠。In some embodiments of the present invention, the surfactant is preferably sodium dodecylsulfonate.
本发明实施例另一方面还提出上述气相缓蚀剂的制备方法，包括如下步骤：On the other hand, the embodiment of the present invention also proposes a method for preparing the above gas phase corrosion inhibitor, which includes the following steps:
S1：将主缓蚀剂溶解于蒸馏水中，搅拌10～20min，得到溶液A；S1: Dissolve the main corrosion inhibitor in distilled water and stir for 10-20 minutes to obtain solution A;
S2：将磷酸类缓蚀剂溶解于蒸馏水中，搅拌10～20min，得到溶液B；S2: Dissolve phosphoric acid corrosion inhibitor in distilled water and stir for 10-20 minutes to obtain solution B;
S3：将表面活性剂溶解于蒸馏水中，搅拌10～20min，得到溶液C；S3: Dissolving the surfactant in distilled water and stirring for 10-20 minutes to obtain solution C;
S4：按比例称取缓蚀助剂，并将其加热至50～80℃，加热10～20min后，得到溶液D；S4: Weigh the corrosion inhibitor in proportion, and heat it to 50-80°C for 10-20 minutes to obtain solution D;
S5：将溶液A、溶液B、溶液C和溶液D于50～80℃下搅拌混合30～60min，即得所述气相缓蚀剂。S5: Stir and mix solution A, solution B, solution C and solution D at 50-80° C. for 30-60 minutes to obtain the vapor phase corrosion inhibitor.
本发明实施例气相缓蚀剂的制备方法工艺简单，易操作，不需要复杂的反应设备，制造成本较低，且反应条件温和；通过本发明实施例制备方法制得的气相缓蚀剂缓蚀效果良好，且与金属的相容性好，可以实现对金属的长期防锈保护。The preparation method of the gas-phase corrosion inhibitor according to the embodiment of the present invention is simple in process, easy to operate, does not require complex reaction equipment, has low manufacturing cost, and has mild reaction conditions; the gas-phase corrosion inhibitor prepared by the preparation method of the embodiment of the present invention inhibits corrosion The effect is good, and the compatibility with the metal is good, which can realize the long-term anti-rust protection of the metal.
在本发明的一些实施例中，步骤S1中，所述主缓蚀剂与所述蒸馏水的质量比为1:5～1:10。In some embodiments of the present invention, in step S1, the mass ratio of the main corrosion inhibitor to the distilled water is 1:5˜1:10.
在本发明的一些实施例中，步骤S2中，所述磷酸类缓蚀剂与所述蒸馏水的质量比为1:5～1:10。In some embodiments of the present invention, in step S2, the mass ratio of the phosphoric acid corrosion inhibitor to the distilled water is 1:5˜1:10.
在本发明的一些实施例中，步骤S3中，所述表面活性剂与所述蒸馏水的质量比为1:3～1:5。In some embodiments of the present invention, in step S3, the mass ratio of the surfactant to the distilled water is 1:3˜1:5.
本发明实施例又一方面还提出上述气相缓蚀剂在高温气冷堆蒸汽发生器缓蚀中的应用。Still another aspect of the embodiments of the present invention also proposes the application of the above-mentioned gas phase corrosion inhibitor in the corrosion inhibition of the steam generator of the high temperature gas-cooled reactor.
本发明所具有的优点和有益效果为：The advantages and beneficial effects that the present invention has are:
本发明实施例的气相缓蚀剂中，各组分之间相互促进，提高了缓蚀效果，可以有效抑制金属的腐蚀，具有良好的缓蚀性能，且其与金属的相容性好，可以实现对金属的长期防锈保护；且该气相缓蚀剂的制备方法工艺简单，易操作，适合大规模工业化生产。In the vapor phase corrosion inhibitor of the embodiment of the present invention, each component promotes each other, improves the corrosion inhibition effect, can effectively inhibit the corrosion of metals, has good corrosion inhibition performance, and has good compatibility with metals, can The long-term anti-rust protection for metal is realized; and the preparation method of the vapor phase corrosion inhibitor is simple in process and easy to operate, and is suitable for large-scale industrial production.
具体实施方式Detailed ways
为使本发明实施例的目的、技术方案和优点更加清楚，下面将对本发明实施例的技术方案进行清楚、完整的描述。显然，所描述的实施例是本发明的一部分实施例，而不是全部的实施例。基于所描述的本发明的实施例，本领域普通技术人员在无需创造性劳动的前提下所获得的所有其他实施例，都属于本发明的保护范围。In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below. Apparently, the described embodiments are some, not all, embodiments of the present invention. Based on the described embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.
除非另作定义，本发明所使用的技术术语或者科学术语应当为本发明所属领域内有一般技能的人士所理解的通常意义。Unless otherwise defined, the technical terms or scientific terms used in the present invention shall have the usual meanings understood by those skilled in the art to which the present invention belongs.
在本文中，在将值描述为范围的情况下，应当理解，这种公开包括在该范围内的所有可能的子范围的公开，以及落入该范围内的具体数值，而与是否明确指出具体数值或具体子范围无关。Herein, where values are described as a range, it is to be understood that such disclosure includes disclosure of all possible subranges within that range, as well as specific numerical values falling within that range, regardless of whether a specific Values or specific subranges are irrelevant.
本发明实施例一方面提出一种适用于高温气冷堆蒸汽发生器的气相缓蚀剂，包括如下组分：主缓蚀剂50～70wt％、磷酸类缓蚀剂20～40wt％、表面活性剂2～5wt％、缓蚀助剂5～10wt％，以重量百分比计；On the one hand, the embodiment of the present invention proposes a gas-phase corrosion inhibitor suitable for high-temperature gas-cooled reactor steam generators, including the following components: 50-70wt% of the main corrosion inhibitor, 20-40wt% of the phosphoric acid corrosion inhibitor, surface active 2～5wt% of additives, 5～10wt% of corrosion inhibitors, calculated by weight percentage;
其中，主缓蚀剂为碳酸环己胺、苯甲酸钠和磷酸铵的混合物；Wherein, the main corrosion inhibitor is a mixture of cyclohexylamine carbonate, sodium benzoate and ammonium phosphate;
表面活性剂为十八烷基硫酸钠或十二烷基磺酸钠；The surfactant is sodium octadecyl sulfate or sodium dodecyl sulfate;
缓蚀助剂为十八胺。The corrosion inhibitor is octadecylamine.
本发明实施例中的气相缓蚀剂由极性基和非极性的疏水基两部分组成。其中，主缓蚀剂和磷酸类缓蚀剂具有极性基(含孤电子对的氧原子)，其能够提供孤对电子，从而与Fe的d空轨道进行杂化，形成配位键，吸附于金属表面，改变金属表面的双电层结构，进而提高金属离子化过程的活化能，降低金属的腐蚀速率；而采用十八胺作为缓蚀助剂，其具有非极性的疏水基(烃基)，能够将腐蚀介质与金属表面分隔开，阻碍了腐蚀反应相关的电荷和(或)物质的转移过程，降低了金属的腐蚀速度；且十八胺不溶于水，可在金属表面形成一层单分子或多分子膜，起屏障隔离的作用，使水中的溶解氧不能同金属表面接触；且十八胺成膜均匀，保护时间长，即使是在密封不严的情况下也可发挥缓蚀作用；此外，本发明实施例中通过向气相缓蚀剂中添加表面活性剂，可以提高金属对水的憎水性，从而降低金属表面水的吸附，进一步降低金属的腐蚀速率。The vapor phase corrosion inhibitor in the embodiment of the present invention consists of two parts: polar group and non-polar hydrophobic group. Among them, the main corrosion inhibitor and phosphoric acid corrosion inhibitor have polar groups (oxygen atoms containing lone electron pairs), which can provide lone pair electrons to hybridize with the d-empty orbital of Fe to form coordination bonds and adsorb On the metal surface, change the electric double layer structure of the metal surface, thereby increasing the activation energy of the metal ionization process and reducing the corrosion rate of the metal; and using octadecylamine as a corrosion inhibitor, which has a non-polar hydrophobic group (hydrocarbon group ), which can separate the corrosion medium from the metal surface, hinder the transfer process of the charge and (or) substance related to the corrosion reaction, and reduce the corrosion rate of the metal; and octadecylamine is insoluble in water, and can form a A layer of monomolecular or multimolecular film acts as a barrier to prevent dissolved oxygen in water from contacting the metal surface; and octadecylamine forms a uniform film and has a long protection time, which can play a role in slowing down even in the case of poor sealing In addition, in the embodiment of the present invention, by adding a surfactant to the gas phase corrosion inhibitor, the hydrophobicity of the metal to water can be improved, thereby reducing the adsorption of water on the metal surface and further reducing the corrosion rate of the metal.
在一些具体的实施例中，碳酸环己胺与苯甲酸钠、磷酸铵的质量比为2:(1.5～2):1，非限制性举例如：2:1.5:1、2:1.8:1、2:2:1等，优选为2:1.5:1。In some specific embodiments, the mass ratio of cyclohexylamine carbonate to sodium benzoate and ammonium phosphate is 2:(1.5～2):1, non-limiting examples: 2:1.5:1, 2:1.8:1, 2:2:1 etc., preferably 2:1.5:1.
在一些具体的实施例中，磷酸类缓蚀剂为磷酸环己胺、乙二胺四亚甲基磷酸或氨甲基膦酸中的任一种，优选为磷酸环己胺。In some specific embodiments, the phosphoric acid corrosion inhibitor is any one of cyclohexylamine phosphate, ethylenediamine tetramethylene phosphoric acid or aminomethylphosphonic acid, preferably cyclohexylamine phosphate.
在一些具体的实施例中，表面活性剂优选为十二烷基磺酸钠。In some specific embodiments, the surfactant is preferably sodium dodecylsulfonate.
本发明实施例另一方面还提出上述气相缓蚀剂的制备方法，包括如下步骤：On the other hand, the embodiment of the present invention also proposes a method for preparing the above gas phase corrosion inhibitor, which includes the following steps:
S1：将主缓蚀剂溶解于蒸馏水中，搅拌10～20min，得到溶液A；S1: Dissolve the main corrosion inhibitor in distilled water and stir for 10-20 minutes to obtain solution A;
S2：将磷酸类缓蚀剂溶解于蒸馏水中，搅拌10～20min，得到溶液B；S2: Dissolve phosphoric acid corrosion inhibitor in distilled water and stir for 10-20 minutes to obtain solution B;
S3：将表面活性剂溶解于蒸馏水中，搅拌10～20min，得到溶液C；S3: Dissolving the surfactant in distilled water and stirring for 10-20 minutes to obtain solution C;
S4：按比例称取缓蚀助剂，并将其加热至50～80℃，加热10～20min后，得到溶液D；S4: Weigh the corrosion inhibitor in proportion, and heat it to 50-80°C for 10-20 minutes to obtain solution D;
S5：将溶液A、溶液B、溶液C和溶液D于50～80℃下搅拌混合30～60min，即得所述气相缓蚀剂。S5: Stir and mix solution A, solution B, solution C and solution D at 50-80° C. for 30-60 minutes to obtain the vapor phase corrosion inhibitor.
本发明实施例气相缓蚀剂的制备方法工艺简单，不需要复杂的反应设备，且反应条件温和，通过本发明实施例制备方法制得的气相缓蚀剂缓蚀效果良好，且与金属的相容性好，可以实现对金属的长期防锈保护。The preparation method of the gas-phase corrosion inhibitor in the embodiment of the present invention is simple in process, does not require complicated reaction equipment, and the reaction conditions are mild. Capacitance is good, can realize the long-term antirust protection to the metal.
在一些具体的实施例中，步骤S1中，主缓蚀剂与蒸馏水的质量比为1:5～1:10，非限制性举例如：1:5、1:6、1:7、1:8、1:9、1:10等。In some specific embodiments, in step S1, the mass ratio of the main corrosion inhibitor to distilled water is 1:5 to 1:10, non-limiting examples: 1:5, 1:6, 1:7, 1: 8, 1:9, 1:10, etc.
在一些具体的实施例中，步骤S2中，磷酸类缓蚀剂与蒸馏水的质量比为1:5～1:10，非限制性举例如：1:5、1:6、1:7、1:8、1:9、1:10等。In some specific embodiments, in step S2, the mass ratio of phosphoric acid corrosion inhibitor to distilled water is 1:5-1:10, non-limiting examples: 1:5, 1:6, 1:7, 1 :8, 1:9, 1:10, etc.
在一些具体的实施例中，步骤S3中，表面活性剂与蒸馏水的质量比为1:3～1:5，非限制性举例如：1:3、1:4、1:5等。In some specific embodiments, in step S3, the mass ratio of surfactant to distilled water is 1:3-1:5, non-limiting examples are: 1:3, 1:4, 1:5, etc.
本发明实施例又一方面还提出上述气相缓蚀剂在高温气冷堆蒸汽发生器缓蚀中的应用。Still another aspect of the embodiments of the present invention also proposes the application of the above-mentioned gas phase corrosion inhibitor in the corrosion inhibition of the steam generator of the high temperature gas-cooled reactor.
下面结合具体实施例对本发明技术方案作进一步详细说明，除非另有说明，以下实施例中使用的原料和试剂均为市售商品，或者可以通过已知的方法制备得到。The technical solutions of the present invention will be further described in detail below in conjunction with specific examples. Unless otherwise specified, the raw materials and reagents used in the following examples are commercially available, or can be prepared by known methods.
实施例1Example 1
本实施例提供一种适用于高温气冷堆蒸汽发生器的气相缓蚀剂，该气相缓蚀剂包括如下组分(以重量百分比计)：This embodiment provides a gas-phase corrosion inhibitor suitable for high-temperature gas-cooled reactor steam generators, which gas-phase corrosion inhibitor includes the following components (by weight percentage):
该气相缓蚀剂的制备方法包括如下步骤：The preparation method of this vapor phase corrosion inhibitor comprises the steps:
S1：按比例称取主缓蚀剂，并将主缓蚀剂溶解于蒸馏水中(其中，主缓蚀剂与蒸馏水的质量比为1:10)，搅拌20min，得到溶液A；S1: Weigh the main corrosion inhibitor in proportion, dissolve the main corrosion inhibitor in distilled water (the mass ratio of the main corrosion inhibitor to distilled water is 1:10), stir for 20 minutes, and obtain solution A;
S2：按比例称取磷酸环己胺，并将磷酸环己胺溶解于蒸馏水中(其中，磷酸环己胺与蒸馏水的质量比为1:5)，搅拌10min，得到溶液B；S2: Weigh cyclohexylamine phosphate in proportion, and dissolve cyclohexylamine phosphate in distilled water (wherein, the mass ratio of cyclohexylamine phosphate to distilled water is 1:5), and stir for 10 minutes to obtain solution B;
S3：按比例称取十八烷基硫酸钠，并将十八烷基硫酸钠溶解于蒸馏水中(其中，十八烷基硫酸钠与蒸馏水的质量比为1:3)，搅拌10min，得到溶液C；S3: Take sodium octadecyl sulfate in proportion, and dissolve sodium octadecyl sulfate in distilled water (wherein, the mass ratio of sodium octadecyl sulfate to distilled water is 1:3), stir for 10min, and obtain a solution C;
S4：按比例称取十八胺，并将其于集热式恒温加热磁力搅拌器中加热至50℃，加热20min后，得到溶液D；S4: Weigh octadecylamine in proportion, and heat it to 50°C in a collector-type constant temperature heating magnetic stirrer, and after heating for 20 minutes, a solution D is obtained;
S5：将上述溶液A、溶液B、溶液C和溶液D于50℃下搅拌混合60min，即得所述气相缓蚀剂。S5: Stir and mix the above solution A, solution B, solution C and solution D at 50° C. for 60 minutes to obtain the vapor phase corrosion inhibitor.
实施例2Example 2
本实施例提供一种适用于高温气冷堆蒸汽发生器的气相缓蚀剂，该气相缓蚀剂包括如下组分(以重量百分比计)：This embodiment provides a gas-phase corrosion inhibitor suitable for high-temperature gas-cooled reactor steam generators, which gas-phase corrosion inhibitor includes the following components (by weight percentage):
该气相缓蚀剂的制备方法包括如下步骤：The preparation method of this vapor phase corrosion inhibitor comprises the steps:
S1：按比例称取主缓蚀剂，并将主缓蚀剂溶解于蒸馏水中(其中，主缓蚀剂与蒸馏水的质量比为1:8)，搅拌18min，得到溶液A；S1: Weigh the main corrosion inhibitor in proportion, dissolve the main corrosion inhibitor in distilled water (the mass ratio of the main corrosion inhibitor to distilled water is 1:8), stir for 18 minutes, and obtain solution A;
S2：按比例称取乙二胺四亚甲基磷酸，并将乙二胺四亚甲基磷酸溶解于蒸馏水中(其中，乙二胺四亚甲基磷酸与蒸馏水的质量比为1:6)，搅拌12min，得到溶液B；S2: Weigh ethylenediaminetetramethylene phosphoric acid in proportion, and dissolve ethylenediaminetetramethylene phosphoric acid in distilled water (the mass ratio of ethylenediaminetetramethylene phosphoric acid to distilled water is 1:6) , stirred for 12min to obtain solution B;
S3：按比例称取十二烷基磺酸钠，并将十二烷基磺酸钠溶解于蒸馏水中(其中，十二烷基磺酸钠与蒸馏水的质量比为1:4)，搅拌12min，得到溶液C；S3: Take sodium dodecylsulfonate in proportion, and dissolve sodium dodecylsulfonate in distilled water (wherein, the mass ratio of sodium dodecylsulfonate to distilled water is 1:4), and stir for 12min , to obtain solution C;
S4：按比例称取十八胺，并将其于集热式恒温加热磁力搅拌器中加热至60℃，加热15min后，得到溶液D；S4: Weigh octadecylamine in proportion, and heat it to 60°C in a collector-type constant temperature heating magnetic stirrer, and after heating for 15 minutes, a solution D is obtained;
S5：将上述溶液A、溶液B、溶液C和溶液D于50℃下搅拌混合30min，即得所述气相缓蚀剂。S5: Stir and mix the above solution A, solution B, solution C and solution D at 50° C. for 30 minutes to obtain the vapor phase corrosion inhibitor.
实施例3Example 3
本实施例提供一种适用于高温气冷堆蒸汽发生器的气相缓蚀剂，该气相缓蚀剂包括如下组分(以重量百分比计)：This embodiment provides a gas-phase corrosion inhibitor suitable for high-temperature gas-cooled reactor steam generators, which gas-phase corrosion inhibitor includes the following components (by weight percentage):
该气相缓蚀剂的制备方法包括如下步骤：The preparation method of this vapor phase corrosion inhibitor comprises the steps:
S1：按比例称取主缓蚀剂，并将主缓蚀剂溶解于蒸馏水中(其中，主缓蚀剂与蒸馏水的质量比为1:7)，搅拌15min，得到溶液A；S1: Weigh the main corrosion inhibitor in proportion, dissolve the main corrosion inhibitor in distilled water (the mass ratio of the main corrosion inhibitor to distilled water is 1:7), stir for 15 minutes, and obtain solution A;
S2：按比例称取氨甲基磷酸，并将氨甲基磷酸溶解于蒸馏水中(其中，氨甲基磷酸与蒸馏水的质量比为1:7)，搅拌15min，得到溶液B；S2: Weigh aminomethylphosphoric acid in proportion, and dissolve aminomethylphosphoric acid in distilled water (wherein the mass ratio of aminomethylphosphoric acid to distilled water is 1:7), stir for 15min to obtain solution B;
S3：按比例称取十八烷基硫酸钠，并将十八烷基硫酸钠溶解于蒸馏水中(其中，十八烷基硫酸钠与蒸馏水的质量比为1:5)，搅拌15min，得到溶液C；S3: Take sodium octadecyl sulfate in proportion, and dissolve sodium octadecyl sulfate in distilled water (wherein the mass ratio of sodium octadecyl sulfate to distilled water is 1:5), stir for 15min to obtain a solution C;
S4：按比例称取十八胺，并将其于集热式恒温加热磁力搅拌器中加热至70℃，加热15min后，得到溶液D；S4: Weigh octadecylamine in proportion, and heat it to 70°C in a collector-type constant temperature heating magnetic stirrer, and after heating for 15 minutes, a solution D is obtained;
S5：将上述溶液A、溶液B、溶液C和溶液D于60℃下搅拌混合50min，即得所述气相缓蚀剂。S5: Stir and mix the above solution A, solution B, solution C and solution D at 60° C. for 50 minutes to obtain the vapor phase corrosion inhibitor.
实施例4Example 4
本实施例提供一种适用于高温气冷堆蒸汽发生器的气相缓蚀剂，该气相缓蚀剂包括如下组分(以重量百分比计)：This embodiment provides a gas-phase corrosion inhibitor suitable for high-temperature gas-cooled reactor steam generators, which gas-phase corrosion inhibitor includes the following components (by weight percentage):
该气相缓蚀剂的制备方法包括如下步骤：The preparation method of this vapor phase corrosion inhibitor comprises the steps:
S1：按比例称取主缓蚀剂，并将主缓蚀剂溶解于蒸馏水中(其中，主缓蚀剂与蒸馏水的质量比为1:6)，搅拌12min，得到溶液A；S1: Weigh the main corrosion inhibitor in proportion, dissolve the main corrosion inhibitor in distilled water (the mass ratio of the main corrosion inhibitor to distilled water is 1:6), stir for 12 minutes, and obtain solution A;
S2：按比例称取磷酸环己胺，并将磷酸环己胺溶解于蒸馏水中(其中，磷酸环己胺与蒸馏水的质量比为1:8)，搅拌12min，得到溶液B；S2: Weigh cyclohexylamine phosphate in proportion, and dissolve cyclohexylamine phosphate in distilled water (wherein, the mass ratio of cyclohexylamine phosphate to distilled water is 1:8), and stir for 12 minutes to obtain solution B;
S3：按比例称取十二烷基磺酸钠，并将十二烷基磺酸钠溶解于蒸馏水中(其中，十二烷基磺酸钠与蒸馏水的质量比为1:5)，搅拌12min，得到溶液C；S3: Take sodium dodecylsulfonate in proportion, and dissolve sodium dodecylsulfonate in distilled water (wherein, the mass ratio of sodium dodecylsulfonate to distilled water is 1:5), and stir for 12min , to obtain solution C;
S4：按比例称取十八胺，并将其于集热式恒温加热磁力搅拌器中加热至80℃，加热12min后，得到溶液D；S4: Weigh octadecylamine in proportion, and heat it to 80°C in a collector-type constant temperature heating magnetic stirrer, and after heating for 12 minutes, a solution D is obtained;
S5：将上述溶液A、溶液B、溶液C和溶液D于70℃下搅拌混合40min，即得所述气相缓蚀剂。S5: Stir and mix the above solution A, solution B, solution C and solution D at 70° C. for 40 minutes to obtain the vapor phase corrosion inhibitor.
实施例5Example 5
本实施例提供一种适用于高温气冷堆蒸汽发生器的气相缓蚀剂，该气相缓蚀剂包括如下组分(以重量百分比计)：This embodiment provides a gas-phase corrosion inhibitor suitable for high-temperature gas-cooled reactor steam generators, which gas-phase corrosion inhibitor includes the following components (by weight percentage):
该气相缓蚀剂的制备方法包括如下步骤：The preparation method of this vapor phase corrosion inhibitor comprises the steps:
S1：按比例称取主缓蚀剂，并将主缓蚀剂溶解于蒸馏水中(其中，主缓蚀剂与蒸馏水的质量比为1:5)，搅拌10min，得到溶液A；S1: Weigh the main corrosion inhibitor in proportion, dissolve the main corrosion inhibitor in distilled water (the mass ratio of the main corrosion inhibitor to distilled water is 1:5), stir for 10 minutes, and obtain solution A;
S2：按比例称取乙二胺四亚甲基磷酸，并将乙二胺四亚甲基磷酸溶解于蒸馏水中(其中，乙二胺四亚甲基磷酸与蒸馏水的质量比为1:5)，搅拌10min，得到溶液B；S2: Weigh ethylenediamine tetramethylene phosphoric acid in proportion, and dissolve ethylenediamine tetramethylene phosphoric acid in distilled water (wherein, the mass ratio of ethylenediamine tetramethylene phosphoric acid to distilled water is 1:5) , stirred for 10 min to obtain solution B;
S3：按比例称取十二烷基磺酸钠，并将十二烷基磺酸钠溶解于蒸馏水中(其中，十二烷基磺酸钠与蒸馏水的质量比为1:5)，搅拌10min，得到溶液C；S3: Take sodium dodecylsulfonate in proportion, and dissolve sodium dodecylsulfonate in distilled water (wherein, the mass ratio of sodium dodecylsulfonate to distilled water is 1:5), and stir for 10min , to obtain solution C;
S4：按比例称取十八胺，并将其于集热式恒温加热磁力搅拌器中加热至60℃，加热15min后，得到溶液D；S4: Weigh octadecylamine in proportion, and heat it to 60°C in a collector-type constant temperature heating magnetic stirrer, and after heating for 15 minutes, a solution D is obtained;
S5：将上述溶液A、溶液B、溶液C和溶液D于60℃下搅拌混合50min，即得所述气相缓蚀剂。S5: Stir and mix the above solution A, solution B, solution C and solution D at 60° C. for 50 minutes to obtain the vapor phase corrosion inhibitor.
试验例1Test example 1
参照GB/T 35491-2017《缓蚀剂气相缓蚀剂》对本发明实施例1-5制得的气相缓蚀剂进行静态挂片失重试验。选用碳钢金属作为腐蚀指示片，记录挂片实验数据，取1L具塞广口瓶，将气相缓蚀剂置于试剂盛放皿中并放于广口瓶内，通过尼龙丝悬挂同类型金属材料的挂片3片，置于广口瓶内，尼龙丝末端系在瓶口，塞紧橡胶塞后，通过专用注射器向瓶内注入NaCl溶液，同时另取3片同类型金属材料的挂片按照上述方法做平行空白试验(不加气相缓蚀剂)，然后将上述2个具塞广口瓶置于控温烘箱内，温度调节至70℃，记录开始时间，72小时后记录停止时间，取出挂片对表面进行处理后称重，通过计算获取腐蚀速率、缓蚀率。Referring to GB/T 35491-2017 "Corrosion Inhibitor Vapor Phase Corrosion Inhibitor", the static coupon weight loss test was carried out on the gas phase corrosion inhibitor prepared in Examples 1-5 of the present invention. Choose carbon steel metal as the corrosion indicator sheet, record the experimental data of the hanging sheet, take a 1L corked jar, put the gas phase corrosion inhibitor in the reagent holding dish and put it in the jar, hang the same type of metal through nylon wire Put 3 hanging pieces of the material in a wide-mouth bottle, tie the end of the nylon wire to the mouth of the bottle, tighten the rubber stopper, inject NaCl solution into the bottle through a special syringe, and take another 3 hanging pieces of the same type of metal material Do a parallel blank test (without gas phase corrosion inhibitor) according to the above method, then place the above two stoppered jars in a temperature-controlled oven, adjust the temperature to 70°C, record the start time, and record the stop time after 72 hours. The coupons were taken out to treat the surface and weighed, and the corrosion rate and corrosion inhibition rate were obtained by calculation.
按照上述方法，分别对实施例1-5所得的气相缓蚀剂进行测试，结果如表1所示。According to the above method, the vapor phase corrosion inhibitors obtained in Examples 1-5 were tested respectively, and the results are shown in Table 1.
表1实施例1-5所得气相缓蚀剂的缓蚀性能数据The corrosion inhibition performance data of the gas phase corrosion inhibitor obtained in embodiment 1-5 of table 1
气相缓蚀剂的防腐性能主要由腐蚀速率和缓蚀率来表征，上述实施例的试验数据表明：本发明实施例1～5制得的气相缓蚀剂在70℃、NaCl腐蚀介质条件下，反应72h前后腐蚀速率平均只有0.03294g/(m2·h)，远低于对比例的腐蚀速率0.3722g/(m2·h)；反应72h前后缓蚀率平均达到91.2％。本发明中的气相缓蚀剂对碳钢等均具有良好的缓蚀性能，并且具有长效的气相缓蚀能力，能实现对金属等材料进行长期有效的防锈保护。The anticorrosion performance of the vapor phase corrosion inhibitor is mainly characterized by the corrosion rate and the corrosion inhibition rate. The test data of the above examples show that: the vapor phase corrosion inhibitor prepared in Examples 1 to 5 of the present invention reacts at 70°C under the NaCl corrosion medium condition. The average corrosion rate before and after 72 hours is only 0.03294g/(m 2 ·h), much lower than the corrosion rate of 0.3722g/(m 2 ·h) in the comparative example; the average corrosion inhibition rate reaches 91.2% before and after 72 hours of reaction. The gas phase corrosion inhibitor in the invention has good corrosion inhibition performance on carbon steel and the like, and has long-term gas phase corrosion inhibition ability, and can realize long-term and effective antirust protection for metals and other materials.
试验例2Test example 2
参照GB/T 35491-2017《缓蚀剂气相缓蚀剂》对本发明实施例1-5制得的气相缓蚀剂进行静态挂片失重试验。选用碳钢金属作为腐蚀指示片，记录挂片实验数据，取1L具塞广口瓶，将气相缓蚀剂置于试剂盛放皿中并放于广口瓶内，通过尼龙丝悬挂同类型金属材料的挂片3片，置于广口瓶内，尼龙丝末端系在瓶口，塞紧橡胶塞后，通过专用注射器向瓶内注入NaCl溶液，同时另取3片同类型金属材料的挂片按照上述方法做平行空白试验(不加气相缓蚀剂)，然后将上述2个具塞广口瓶置于控温烘箱内，温度调节至500℃，记录开始时间，72小时后记录停止时间，取出挂片对表面进行处理后称重，通过计算获取腐蚀速率、缓蚀率。Referring to GB/T 35491-2017 "Corrosion Inhibitor Vapor Phase Corrosion Inhibitor", the static coupon weight loss test was carried out on the gas phase corrosion inhibitor prepared in Examples 1-5 of the present invention. Choose carbon steel metal as the corrosion indicator sheet, record the experimental data of the hanging sheet, take a 1L corked jar, put the gas phase corrosion inhibitor in the reagent holding dish and put it in the jar, hang the same type of metal through nylon wire Put 3 hanging pieces of the material in a wide-mouth bottle, tie the end of the nylon wire to the mouth of the bottle, tighten the rubber stopper, inject NaCl solution into the bottle through a special syringe, and take another 3 hanging pieces of the same type of metal material Do a parallel blank test (without gas phase corrosion inhibitor) according to the above method, then place the above two stoppered jars in a temperature-controlled oven, adjust the temperature to 500°C, record the start time, and record the stop time after 72 hours. The coupons were taken out to treat the surface and weighed, and the corrosion rate and corrosion inhibition rate were obtained by calculation.
按照上述方法，分别对实施例1-5所得的气相缓蚀剂进行测试，结果如表2所示。According to the above method, the vapor phase corrosion inhibitors obtained in Examples 1-5 were tested respectively, and the results are shown in Table 2.
表2实施例1-5所得气相缓蚀剂的缓蚀性能数据The corrosion inhibition property data of table 2 embodiment 1-5 gained vapor phase corrosion inhibitor
气相缓蚀剂的防腐性能主要由腐蚀速率和缓蚀率来表征，上述实施例的试验数据表明：本发明实施例1～5制得的气相缓蚀剂在500℃、NaCl腐蚀介质条件下，反应72h前后腐蚀速率平均只有0.2477g/(m2·h)，远低于对比例的腐蚀速率0.8772g/(m2·h)；反应72h前后缓蚀率平均达到71.8％。本发明中的气相缓蚀剂对碳钢等均具有良好的缓蚀性能，且在高温下依然具有长效的气相缓蚀能力，能够对高温气冷堆蒸汽发生器进行长期有效的防锈保护。The anticorrosion performance of the vapor phase corrosion inhibitor is mainly characterized by the corrosion rate and the corrosion inhibition rate. The test data of the above examples show that: the vapor phase corrosion inhibitor prepared in Examples 1 to 5 of the present invention is 500 ° C and NaCl corrosion medium conditions, the reaction The average corrosion rate before and after 72 hours is only 0.2477g/(m 2 ·h), much lower than the corrosion rate of 0.8772g/(m 2 ·h) in the comparative example; the average corrosion inhibition rate reaches 71.8% before and after 72 hours of reaction. The gas-phase corrosion inhibitor in the present invention has good corrosion inhibition performance on carbon steel, etc., and still has long-term gas-phase corrosion inhibition ability at high temperature, and can provide long-term and effective anti-rust protection for high-temperature gas-cooled reactor steam generators .
在本发明中，术语“一个实施例”、“一些实施例”、“示例”、“具体示例”、或“一些示例”等意指结合该实施例或示例描述的具体特征、结构、材料或者特点包含于本发明的至少一个实施例或示例中。在本说明书中，对上述术语的示意性表述不必须针对的是相同的实施例或示例。而且，描述的具体特征、结构、材料或者特点可以在任一个或多个实施例或示例中以合适的方式结合。此外，在不相互矛盾的情况下，本领域的技术人员可以将本说明书中描述的不同实施例或示例以及不同实施例或示例的特征进行结合和组合。As used herein, the terms "one embodiment," "some embodiments," "example," "specific examples," or "some examples" mean specific features, structures, materials, or features described in connection with the embodiment or example. A feature is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the described specific features, structures, materials or characteristics may be combined in any suitable manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine different embodiments or examples and features of different embodiments or examples described in this specification without conflicting with each other.
尽管上面已经示出和描述了本发明的实施例，可以理解的是，上述实施例是示例性的，不能理解为对本发明的限制，本领域的普通技术人员在本发明的范围内可以对上述实施例进行变化、修改、替换和变型。Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention, those skilled in the art can make the above-mentioned The embodiments are subject to changes, modifications, substitutions and variations.
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