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Practice of Anticorrosive Protection最新文献

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OPTIMAL REGULATION OF CATHODIC PROTECTION PLANT OPERATION ON THE BASIS OF RELIABILITY AND RESIDUAL LIFE 基于可靠性和剩余寿命的阴极保护装置运行优化调节
Practice of Anticorrosive Protection Pub Date : 2022-06-01 DOI: 10.31615/j.corros.prot.2022.104.2-1
{"title":"OPTIMAL REGULATION OF CATHODIC PROTECTION PLANT OPERATION ON THE BASIS OF RELIABILITY AND RESIDUAL LIFE","authors":"","doi":"10.31615/j.corros.prot.2022.104.2-1","DOIUrl":"https://doi.org/10.31615/j.corros.prot.2022.104.2-1","url":null,"abstract":"Corrosion of steel underground pipelines significantly reduces the service life, leading them to an emergency condition, in which further operation is impossible. The main methods of protecting such pipelinesare insulating coatings and electrochemical protection.Determination of the optimal operating parameters of the electrochemical protection system allows to increase the service life of protected objects, due to a decrease in the load on working objects. These approaches are mainly aimed at reducing energy consumption by determining their optimal output parameters of electrochemical protection equipment, subject to compliance with the requirements of RD for permissible values of the protective potential. However, optimal control algorithms do not directly take into account the actual technical state of the system and cannot provide information about its reliability.The average life of most existing pipelines is more than 20 years. The actual corrosion protection characteristics of such pipelines are significantly reduced in comparison with the initial. In view of this, there is a need to determine the reliability of the electrochemical protection system. Proposed methods for determining and evaluating the reliability indicators of electrochemical protection systems are aimed at building Markov models of the reliability of the object under study and determining its availability factor.The implementation of optimal control algorithms in conjunction with methods for assessing the reliability of electrochemical protection systems can make it possible to determine the time of trouble-free operation and identify the most “vulnerable” elements of the system.","PeriodicalId":20323,"journal":{"name":"Practice of Anticorrosive Protection","volume":"27 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79899542","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
ELECTROLESS PLATING OF NI-MO-P ALLOY 镍钼磷合金的化学镀
Practice of Anticorrosive Protection Pub Date : 2022-06-01 DOI: 10.31615/j.corros.prot.2022.104.2-4
{"title":"ELECTROLESS PLATING OF NI-MO-P ALLOY","authors":"","doi":"10.31615/j.corros.prot.2022.104.2-4","DOIUrl":"https://doi.org/10.31615/j.corros.prot.2022.104.2-4","url":null,"abstract":"Electroless plating of Ni-Mo-P alloy coatings is described from a solution containing sodium pyrophosphate and ammonium chloride as ligands. Application of these ligands allowed using relatively large sodium molybdate concentrations in the solution (8…16 mM), while the high electroless plating rate (up to 20 μm/h) was preserved and semibright coatings were obtained. Depending on the sodium molybdate concentration in the solution, Ni-Mo-P alloys contained 3.5…7.4 at.% of molybdenum in the metallic state. Phosphorus was included into the alloy in the form of nickel phosphide NiP. According to the XRD data. the Ni-Mo-P coatings had a nanocrystalline structure with the coherent scattering region size of 25…34 nm.","PeriodicalId":20323,"journal":{"name":"Practice of Anticorrosive Protection","volume":"20 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85805570","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
PRODUCT-BASED PRESERVATION LIQUIDS NITRATION OF ALKENES 基于产品的烯烃硝化保鲜液
Practice of Anticorrosive Protection Pub Date : 2022-06-01 DOI: 10.31615/j.corros.prot.2022.104.2-2
{"title":"PRODUCT-BASED PRESERVATION LIQUIDS NITRATION OF ALKENES","authors":"","doi":"10.31615/j.corros.prot.2022.104.2-2","DOIUrl":"https://doi.org/10.31615/j.corros.prot.2022.104.2-2","url":null,"abstract":"The article presents the results of nitration reactions of α-olefins in a mixture of orthophosphoric and nitric acids. The results of carrying out the reaction under various reaction conditions are presented. The results of analyzes of the obtained nitro compounds based on the structure of decene-1 nitro derivatives are shown. Also, the results of tests obtained for nitro compounds as inhibitory components in the mineral oil I-40 in various aggressive environments, namely in a hydrochamber, in a 0,001% solution of H2SO4, in sea water, as well as test results for the quality of conservation liquids of the mixture are given obtained unsaturated nitro compounds with monoethanolamide under the same conditions.","PeriodicalId":20323,"journal":{"name":"Practice of Anticorrosive Protection","volume":"4 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88811207","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
CORROSION OF PIPE STEEL 17Г1С IN OIL WITH AN ALLOWABLE AMOUNT OF BOTTOM WATER 管道钢17Г1С在允许的底水量下在油中的腐蚀
Practice of Anticorrosive Protection Pub Date : 2022-06-01 DOI: 10.31615/j.corros.prot.2022.104.2-3
{"title":"CORROSION OF PIPE STEEL 17Г1С IN OIL WITH AN ALLOWABLE AMOUNT OF BOTTOM WATER","authors":"","doi":"10.31615/j.corros.prot.2022.104.2-3","DOIUrl":"https://doi.org/10.31615/j.corros.prot.2022.104.2-3","url":null,"abstract":"This article presents the results of corrosion studies of pipe steel 17G1S in oil with an allowable amount of bottom water (according to GOST R 51858-2002, MOD и ST RK 1347-2005) on a model laboratory circulating plant. For the study, 5 types of commercial oil were used, as well as bottom water (from process of final separation of oil at stations for the preparation of used types of oil). According to the results of analysis of the physicochemical properties of samples, corrosive components were determined both in oil (sulfur, mercaptans and chloride salts) and in bottom water (in the form of chloride ions, sulfate ions). Based on the obtained data on the corrosion rate of coupons made of steel 17Г1С, it was defined that the maximum allowable amount of aqueous phase (with aggressive components dissolved in it) contained in commercial oil (according to standards), increase the corrosion rate by an average of 5…12 times, compared with oil containing trace amounts of water.","PeriodicalId":20323,"journal":{"name":"Practice of Anticorrosive Protection","volume":"38 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79849784","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
EXPERIMENTAL STUDY OF THE ANTI-CORROSION EFFECT OF STRUCTURAL STEEL AH-36 UNDER CATHODIC POLARIZATION IN THE TROPICAL MARINE ENVIRONMENT 热带海洋环境中ah-36结构钢阴极极化防腐效果的实验研究
Practice of Anticorrosive Protection Pub Date : 2022-03-01 DOI: 10.31615/j.corros.prot.2022.103.1-1
{"title":"EXPERIMENTAL STUDY OF THE ANTI-CORROSION EFFECT OF STRUCTURAL STEEL AH-36 UNDER CATHODIC POLARIZATION IN THE TROPICAL MARINE ENVIRONMENT","authors":"","doi":"10.31615/j.corros.prot.2022.103.1-1","DOIUrl":"https://doi.org/10.31615/j.corros.prot.2022.103.1-1","url":null,"abstract":"The initial result of an experimental study of the anti-corrosion effect of structural steel AH36 is shown under cathodic polarization in tropical seawater in Vietnam. In the study, various environmental sensors are used to collect data about the environment, in which the calcareous layer is formed with rapid polarization. The completion of layer formation is proved by the stabilization of the output voltage while fixing the output current of the power supply. Under the experimental condition, after the first 100…120 hours, the surface of AH-36 structural steel is completely covered with calcareous layer in the tropical marine environment. An analysis of the properties of the calcareous layer in laboratory conditions using electrochemical methods shows that the effectiveness of protection of AH-36 steel from corrosion after cathodic polarization is achieved in the first week. Maintaining a constant current density further away at a given polarization potential leads to a decrease in the effectiveness of electrochemical protection. We offer directions for studying the calcareous layer for increasing the protective efficiency and their resistance in seawater.","PeriodicalId":20323,"journal":{"name":"Practice of Anticorrosive Protection","volume":"56 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80863949","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
SYNTHESIS OF ALKYLAMINE COMPLEXES BASED ON MALEIC ACIDS AND INVESTIGATION OF BACTERICIDAL PROPERTIES 马来酸基烷基胺配合物的合成及杀菌性能研究
Practice of Anticorrosive Protection Pub Date : 2022-03-01 DOI: 10.31615/j.corros.prot.2022.103.1-4
{"title":"SYNTHESIS OF ALKYLAMINE COMPLEXES BASED ON MALEIC ACIDS AND INVESTIGATION OF BACTERICIDAL PROPERTIES","authors":"","doi":"10.31615/j.corros.prot.2022.103.1-4","DOIUrl":"https://doi.org/10.31615/j.corros.prot.2022.103.1-4","url":null,"abstract":"This article presents the results of research in the field of synthesis of organic complexes based on propyl, butyl, pentyl and hexylamine and maleic acid in a molar ratio of 1:1. The structure and structure of the obtained substances were confirmed by IR and 1H NMR spectroscopy. Some physicochemical properties of the synthesized complex have been determined. In order to study the antimicrobial activity of the complexes obtained, their solutions were prepared in various media (water, isopropyl alcohol and ethyl alcohol) at three different concentrations (2.5; 5; 25 mg/l) and their effect on the vital activity of sulfate-reducing bacteria was studied at a temperature of 30... 32 °C for 15 days. It has been established that at a concentration of 2.5 mg/l, the synthesized complex salts exhibit a 96…98% bactericidal effect, and at a concentration of 5…25 mg/l, they exhibit a 100% bactericidal effect, completely suppressing the vital activity of bacteria. The synthesized complexes exhibit a higher bactericidal effect even at low concentrations. Thus, the preparation of organic complexes based on amines and maleic acid, as well as special-purpose inhibitors, components and composite materials based on them, is a very urgent problem. A number of studies have been carried out in this direction.","PeriodicalId":20323,"journal":{"name":"Practice of Anticorrosive Protection","volume":"14 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85888339","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
NEW GENERATION ANTICORROSIVE MATERIALS BASED ON STYRENE BLOCK COPOLYMERS 基于苯乙烯嵌段共聚物的新一代防腐材料
Practice of Anticorrosive Protection Pub Date : 2022-03-01 DOI: 10.31615/j.corros.prot.2022.103.1-3
{"title":"NEW GENERATION ANTICORROSIVE MATERIALS BASED ON STYRENE BLOCK COPOLYMERS","authors":"","doi":"10.31615/j.corros.prot.2022.103.1-3","DOIUrl":"https://doi.org/10.31615/j.corros.prot.2022.103.1-3","url":null,"abstract":"The modern trends of development in the field of materials for anticorrosive protection are considered. It is shown that one of the promising directions is the development of technology for obtaining gumming coatings from solutions of styrene block copolymers by methods of paint and varnish technology. New materials are described, their main advantages, areas and application experience are considered. The high efficiency of the developed and implemented compositions in the field of anticorrosive protection was noted.","PeriodicalId":20323,"journal":{"name":"Practice of Anticorrosive Protection","volume":"109 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79591376","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
COMPOSITES FOR CHEMICAL INDUSTRIES 化学工业用复合材料
Practice of Anticorrosive Protection Pub Date : 2022-03-01 DOI: 10.31615/j.corros.prot.2022.103.1-2
{"title":"COMPOSITES FOR CHEMICAL INDUSTRIES","authors":"","doi":"10.31615/j.corros.prot.2022.103.1-2","DOIUrl":"https://doi.org/10.31615/j.corros.prot.2022.103.1-2","url":null,"abstract":"The issue of using composites based on bis-phenolic and epoxy vinyl ester resins in the practice of anti-corrosion protection of technological equipment, in particular, chemical production equipment, is considered. Composites can be used both as coatings and as structural materials in the manufacture of individual parts of equipment, containers, etc. Composites based on these resins can increase the service life of equipment several times. These materials have a wide temperature range of application; can be operated in aggressive environments (acids, alkalis, oxidizing environments); have high adhesion to metal and concrete; strength comparable to the strength of metals; resistance to shock and dynamic loads and the impact of a liquid stream containing a solid phase.","PeriodicalId":20323,"journal":{"name":"Practice of Anticorrosive Protection","volume":"22 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87656064","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
NEW TECHNOLOGY OF ENERGY-SAVING HYDROTHERMAL INSULATION OF PIPELINES 管道节能热液保温新技术
Practice of Anticorrosive Protection Pub Date : 2021-12-01 DOI: 10.31615/j.corros.prot.2021.102.4-4
{"title":"NEW TECHNOLOGY OF ENERGY-SAVING HYDROTHERMAL INSULATION OF PIPELINES","authors":"","doi":"10.31615/j.corros.prot.2021.102.4-4","DOIUrl":"https://doi.org/10.31615/j.corros.prot.2021.102.4-4","url":null,"abstract":"The issues of operation of mineral wool thermal insulation of pipelines of heating networks are considered, the design features of its advantages and disadvantages are shown on the basis of the experience of the existing operation, the main criteria for increasing the efficiency and operational reliability of thermal insulation structures were determined, which made it possible to create a new improved type of thermal insulation using effective specially developed thermal insulation materials and reliable sealed metal shell.","PeriodicalId":20323,"journal":{"name":"Practice of Anticorrosive Protection","volume":"66 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85055039","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
STUDY OF THE SELECTION OF EFFECTIVE CORROSION INHIBITORS FOR VARIOUS ACIDS 对各种酸的有效缓蚀剂的选择研究
Practice of Anticorrosive Protection Pub Date : 2021-12-01 DOI: 10.31615/j.corros.prot.2021.102.4-3
{"title":"STUDY OF THE SELECTION OF EFFECTIVE CORROSION INHIBITORS FOR VARIOUS ACIDS","authors":"","doi":"10.31615/j.corros.prot.2021.102.4-3","DOIUrl":"https://doi.org/10.31615/j.corros.prot.2021.102.4-3","url":null,"abstract":"Corrosion is one of the complications in the acidizing of the bottomhole zone of the well. Corrosion damage can lead to accidents and product loss. One of the most effective ways to protect metal equipment from corrosion is the use of corrosion inhibitors. Cationic surfactants are mainly used because they are capable of forming protective films on the surface of metals. In this work, studies were carried out to determine the effectiveness of industrial corrosion inhibitors in hydrochloric and sulfamic acids in concentrations of 5, 10, 15 (% wt.). As a result, it was found that in hydrochloric acid, corrosion damage is suppressed due to the adsorption of the inhibitor on the metal surface, while in sulfamic acid there are competing processes of adsorption of sulfamate ions and surfactants.","PeriodicalId":20323,"journal":{"name":"Practice of Anticorrosive Protection","volume":"60 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88463608","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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