Monitoring of hydrogen embrittlement for hydrogenation processing plants
A real time monitoring system is suggested in this paper to predict hydrogen embrittlement for the wall materials of hy-drogenation reactor and pipeline in petrochemical plants. Mechanism of hydrogen embrittlement is discussed for both hydrogen-induced cracking in the reactor wall and hydrogen-induced disbonding under clad. A critical description of hy-drogen induced cracking is introduced to set up a criterion for the embrittlement. An opposite derivation model is assumed to detect the hydrogen concentration in the wall according to the amount of hydrogen escaped from the outside wall with a technology of hydrogen sensor. Electrochemistry hydrogen penetration testing technique is utilized for determination of diffusion coefficient the material interested. The electrochemistry hydrogen sensor is designed for its feasibility of real-time monitoring and assessment of hydrogen embrittlement for the equipment. It is pursued by the research to make a more impersonal judgment of safety of the hydrogenation reactor with real time tracing of operation. A remote inspection system is designed based on computer network technology to monitor the plant subjected to hydrogen attack. To make sure of hydrogenation processing plant safely for a long period of operation,it is necessary to scheme precautionary maintenance plan and improve working condition to prolong its life in service.
Online monitoring Hydrogen embrittlement Hydrogen probe Hydrogenation reactor Pipeline
Zhengdong Wang Zhanya Xing Kuilong Zhu Fuzhen Xuan
MOE Key Lab.Of Safety Science of Pressurized System,East China University of Science and Technology,Shanghai 200237,China
国际会议
Fracture Mechanics and Applications 2008(国际断裂力学2008年年会)(FM2008)
杭州
英文
545-548
2008-10-31(万方平台首次上网日期,不代表论文的发表时间)