粗氢管道腐蚀与腐蚀控制
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摘要
管道既是连接过程设备的受压管件,又是输送流体的承压通道,同样是炼化装置设备管理中不容忽视的系统。通过对粗氢管道内积液造成腐蚀与对腐蚀控制的分析,从管道设计选材、使用中工艺防腐以及过程设备的气水分离等环节进行了讨论。建议管道设计给出设计使用年限;过程设备增设气水分离器;使用中尤其是超过使用年限的管道,在注重日常巡检、维护与年度检验的同时,合理安排定期全面检验,并以定点测厚、腐蚀监测及合于使用评价等方法,使管道处于完好状态。
The pipeline is not only the pressure component which connecting process equipment, but also the pressure channel which conveying the fluid. It is a nonneg ligible system in the equipment management of the refining and chemical units. By analyzing the corrosion caused by fluid accumulation in the crude hydrogen pipe and the corrosion control, the selection of materials in pipeline design, the process anti-corrosion in operation and the gaswater separation in the process equipment are discussed. It is suggested that the pipeline design service life should be considered when designed, the gas-water separation should be added in the process equipment. The pipeline in using, especially when exceeding the design service life, should pay attention to arrange not only the daily inspection,maintenance and annual inspection, but also the regular comprehensive inspection at the same time. The fixed-point thickness measurement, the corrosion monitoring and the fitness for service are used together. The pipe can kept in good condition when the above methods carried out.
The pipeline is not only the pressure component which connecting process equipment, but also the pressure channel which conveying the fluid. It is a nonneg ligible system in the equipment management of the refining and chemical units. By analyzing the corrosion caused by fluid accumulation in the crude hydrogen pipe and the corrosion control, the selection of materials in pipeline design, the process anti-corrosion in operation and the gaswater separation in the process equipment are discussed. It is suggested that the pipeline design service life should be considered when designed, the gas-water separation should be added in the process equipment. The pipeline in using, especially when exceeding the design service life, should pay attention to arrange not only the daily inspection,maintenance and annual inspection, but also the regular comprehensive inspection at the same time. The fixed-point thickness measurement, the corrosion monitoring and the fitness for service are used together. The pipe can kept in good condition when the above methods carried out.
引文
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[4]李顺龙,余存烨.2#炼油联合装置设备腐蚀调查及分析[J].腐蚀与防护,2005, 26(7):310-314.
[5] SH/T 3059-2012石油化工管道设计器材选用规范[S].
[6] TSG D0001-2009压力管道安全技术监察规程-工业管道[S].
[7]邹小勇.某天然气液化项目气液分离器的设计与计算[J].广州化工,2017, 45(10):139-141.
[8]余凯.一种压缩机装置中的高效气液分离器[J]石油和化工设备,2015, 18(6):49-50.
[2]孙家孔.石油化工装置设备腐蚀与防护手册[M].北京:中国石化出版社,1996.
[3]曾彤,余存烨.石化装置加工高含硫含酸原油管道腐蚀与用材分析[J].化工设备与管道,2011, 48(2):57-62.
[4]李顺龙,余存烨.2#炼油联合装置设备腐蚀调查及分析[J].腐蚀与防护,2005, 26(7):310-314.
[5] SH/T 3059-2012石油化工管道设计器材选用规范[S].
[6] TSG D0001-2009压力管道安全技术监察规程-工业管道[S].
[7]邹小勇.某天然气液化项目气液分离器的设计与计算[J].广州化工,2017, 45(10):139-141.
[8]余凯.一种压缩机装置中的高效气液分离器[J]石油和化工设备,2015, 18(6):49-50.