硫磺回收装置腐蚀与防护分析

硫磺回收装置易发生高温硫化物腐蚀、露点腐蚀、湿H2S腐蚀、氯化物应力腐蚀及硫酸腐蚀等五种主要腐蚀形态。分析了五种主要腐蚀形态下的损伤机理及其在硫磺回收装置上易发生的腐蚀部位，并提出了相应的防腐措施。     

专家系统在腐蚀科学中的应用

腐蚀给国民经济造成了巨大的损失,专家系统在腐蚀科学中的应用是腐蚀科学的一个发展趋势。介绍了专家系统在腐蚀科学中应用的历史及现状,着重介绍了三个腐蚀专家系统,分别是:腐蚀损伤评价专家系统、腐蚀失效模式诊断及预测专家系统和石油化工腐蚀适应性评估专家系统。     

天然气压气站腐蚀损伤机理与风险检验研究

分析了天然气压气站静设备及管道的工艺及腐蚀情况,参考国内外同类设备的失效分析,得出可能存在的腐蚀损伤机理有内腐蚀减薄、外部腐蚀、应力腐蚀开裂、埋地腐蚀及冲蚀等。通过实例验证得出,基于风险的检验(RBI)方法能够量化装置风险、明确风险分布及风险水平。     

船体材料腐蚀与防护措施的研究进展

对船体材料在海洋环境中受到的主要腐蚀类型及其腐蚀机理进行了综述,重点包括化学腐蚀、电化学腐蚀、空泡腐蚀及海洋生物腐蚀等方面。然后,通过对腐蚀机理及耐蚀环境的分析,分别从耐蚀材料的选择、表面改性技术的应用、涂层保护材料的发展、阴极保护及防污涂料的应用等影响方面,综合阐述了目前我国船体材料防护措施的发展方向及未来重点研究的领域。     

硫磺回收装置的腐蚀与防治

分析了硫磺回收装置存在的高温硫化腐蚀、电化学腐蚀等主要腐蚀现象及腐蚀机理，提出了本厂已出现的问题及采取的对策。     

中原油田集输管道的内腐蚀及腐蚀防护技术的应用研究

通过对集输蕾线的腐蚀调查及腐蚀因素分析，搞清了集输管线腐蚀的主要原因及主要影响因素，在此基础上研览应用了端点加药技术及管道耐蚀涂层及衬里技术,开发应用了一种针对油田污水腐蚀的HF耐油田污水腐蚀涂料，并取得了较好的防腐效果，有效遏制了集输营线的腐蚀。     

超声C扫描检测技术在塔河油田管道检测中的应用与评价

为了解决现场管道点腐蚀检测工作量不足、检测效率低及检测数据不能有效反映管道内腐蚀状况等问题,提升管道检测在腐蚀程度及规律评价中的作用,在前期大量的现场腐蚀跟踪、腐蚀穿孔数据统计和点腐蚀规律研究基础上,对腐蚀检测方法综合比选,引进新型腐蚀检测装置、建立检测系统操作和管理规程,通过预测油田油气集输、单井集输和站内系统管道腐蚀多发部位,编制现场点腐蚀检测方案,开展现场检测试验和管道寿命预测工作,揭示点腐蚀机理,管道腐蚀检测效率得到显著提升,同时为内涂层评价及腐蚀治理等防腐工艺提供技术支撑。     

加工高硫高酸原油设备的腐蚀分析与防腐措施

介绍了济南分公司近几年所加工原油的基本性质,通过分析原油中有机硫和有机酸等腐蚀性杂质在原油加工过程中的变化情况和分布规律,介绍了设备和管线的腐蚀程度及腐蚀类型,对设备的腐蚀形貌和腐蚀程度进行了较为详细的描述,进而分析造成设备腐蚀的各类腐蚀环境及腐蚀机理,最后提出预防腐蚀的相应措施。     

尿素合成塔腐蚀原因分析及修复

介绍了尿素合成塔衬里腐蚀情况,分析了均匀腐蚀、选择性腐蚀、刀口腐蚀、针孔腐蚀、缝隙腐蚀、冷凝腐蚀等多种腐蚀原因,并针对性地对焊缝及熔合线、人孔密封面作了修复。     

加氢处理装置湿硫化氢环境管道选材探讨

加氢处理装置中经过加氢反应后生成的腐蚀介质H_2S,由于液相水的存在就形成了湿硫化氢腐蚀环境。湿硫化氢环境下钢材腐蚀是多种形式破坏的综合效应,包括均匀腐蚀和局部腐蚀。其中湿硫化氢应力腐蚀开裂是局部腐蚀的一种腐蚀形态,其具有极大的危害性。本文简要的介绍了湿硫化氢应力腐蚀开裂的机理及影响因素。通过对国内外标准及大型工程公司对湿硫化氢环境下管道材料的选择、焊接及热处理等方面的比较,总结归纳了湿硫化氢环境中管道材料的选用原则及要求。     

Corrosive Activity of Coal-Tar Wash Oils and Life of Equipment in Benzene Recovery

The corrosive activity of coal-tar wash oils is investigated. An electrochemical method is proposed for assessing the corrosive activity of the oil with respect to carbon steel. The main sources of corrosive impurities in the absorbers are identified. The contamination of the oil is assessed on the basis of its breakdown voltage. The results are in excellent agreement with analytical monitoring of the wash oils. Gravimetric data for the corrosive activity of the fluids in the existing system show that alloyed molybdenum steels are the most durable structural materials in the distillation department. In systems with a closed final-cooling cycle, the corrosive activity of the coal-tar oils may be reduced by scrubbing with water. Quantitative selection criteria are established for the water used.     

咪唑啉型缓蚀剂合成方法的研究现状

简要概述了咪唑啉型缓蚀剂的基本结构及其缓蚀机理 ,并对咪唑啉型缓蚀剂的结构对该类缓蚀剂的缓蚀性能的影响进行了初步的概括 ,主要介绍了国内关于咪唑啉型缓蚀剂常见的几种合成方法以及其定性分析方法 ,系统的阐述了各种反应条件诸如温度、压力等对咪唑啉系列缓蚀剂的合成反应的影响。同时 ,也对国内咪唑啉类系列化合物合成的研究现状进行了简要的概括和总结     

高炉煤气洗涤废水混凝与缓蚀阻垢剂协调性研究

该文对高炉煤气洗涤废水混凝工艺与缓蚀阻垢剂协调性进行了研究。实验采用聚合氯化铝（PAC）、阳离子聚丙烯酰胺（CPAM）和阴离子聚丙烯酰胺（APAM）为混凝的处理药剂。针对高炉浊循环水存在的缓蚀阻垢成分,实验研究了上述三种药剂与缓蚀阻垢剂的相互作用。结论表明：在相同的处理成本下,阳离子聚丙烯酰胺（CPAM）表现出卓越的除浊性能,与以锌和聚合磷酸盐为主要组分的缓蚀阻垢剂协调性最好。     

喷浆造粒新型钢塔主装置的防腐

造粒塔是复合肥生产的关键设备,然而复合肥溶液对造粒塔的腐蚀十分严重,因此造粒塔防腐措施显得尤为重要.介绍了喷浆造粒新型钢塔主装置的防腐措施,并与其它造粒塔的防腐措施进行比较.     

Coal liquids distillation tower corrosion: titrations relating the acidity and the corrosive chlorides

Coal-derived liquids containing chlorides have resulted in severe corrosion incidents in the distillation area of direct coal liquefaction plants. The chloride is present, in corrosive coal liquids, in an amount equivalent to the acidity that is titratable by sodium hydroxide. The curve obtained for the coal liquids titration is essentially the same as the one obtained for the titration of an amine hydrochloride solution. The corrosive chloride is exchangeable. The experimental results support the view that the corrosive species in coal liquids containing chloride are amine hydrochlorides.     

水厂水质的腐蚀性及防蚀处理

调查研究了我国南方六省40座水厂水质的腐蚀性及其防蚀工艺。腐蚀性水损坏水厂的铁质设施,并使管网水呈黄色。饱和指数I_L小于-0.6、稳定指数I_R大于8以及含有高浓度侵蚀性二氧化碳的水,一般都有腐蚀性。这种水的腐蚀性,可用投加石灰、氢氧化钠或苏打的方法控制;微生物导致的腐蚀可用加氯法防止。     

硫酸盐还原菌的微生物腐蚀及其防护研究进展

综述了硫酸盐还原菌(SRB)引起微生物腐蚀(MIC)的各种机理及其形成生物膜的腐蚀作用,以及利用微生物防治硫酸盐还原菌腐蚀的研究进展.     

高固体分环氧铝粉漆在埋地管道上的防腐蚀应用

介绍了高固体分环氧铝粉漆在钢质埋地管道上的防腐蚀性能、涂装施工与质量控制等,并与其它类型的防腐蚀涂层进行了比较。     

Long term chemical stability of epichlorohydrin/bisphenol resin polymer concrete

The chemical stability of an epichlorohydrin/bisphenol resin polymer concrete under corrosive environment is investigated over a long period extending to 625 days. The results indicate a levelling off at a loss of approximately 50 per cent of the compressive strength at room temperature under the action of the most critical corrosive environment. The combined characteristics of high strength and resistance to corrosive environment render the developed polymer concrete an attractive alternative construction material for bridge decks, pavements, tunnels, underwater structures and long-term storage of radioactive nuclear waste material, contingent on a carefully designed cost effective analysis.     

Expression of the transportation of corrosive media into epoxy coating using nano-indentation

Nano-hardness (H_nano) and nano-elastic modulus (E_nano) of corroded coating surface layer were investigated using nano-indentation after epoxy coated specimens were immersed in 5% NaCl solution. The penetration depths (d) of corrosive media into epoxy coating were calculated fitting the curves of (H/E)_nano vs. indentation depth (h). EIS spectra of epoxy coated specimens immersed in 5% NaCl solution for different time were measured. Finally the relationship of capacitance (C_f,T) of corroded epoxy coating with the penetration depth of corrosive media was studied. The experimental results showed that the transportation process of corrosive media into epoxy coating was studied through the profiles of (H/E)_nano with indentation depth. The penetration depth of corrosive media into the epoxy coating increases rapidly with immersed time firstly, and then increases slowly. The capacitance of corroded epoxy coating has a linear function relationship with the penetration depth of corrosive media into epoxy coating. Nano-indentation can be used to study the transportation process of corrosive media into organic coating.