文献类型：会议论文

中文题名：Monitoring of hydrogen embrittlement for hydrogenation processing plants

作者：Zhengdong Wang[1];Zhanya Xing[1];Kuilong Zhu[1];Fuzhen Xuan[1];

机构：[1]MOE Key Lab.Of Safety Science of Pressurized System,East China University of Science and Technology,Shanghai 200237,China;

会议论文集：Fracture Mechanics and Applications 2008(国际断裂力学2008年年会)(FM2008)论文集

会议日期：20081031

会议地点：杭州

主办单位：华东理工大学;长沙理工大学;南京工业大学;浙江大学;浙江工业大学

语种：英文

中文关键词：Online monitoring;Hydrogen embrittlement;Hydrogen probe;Hydrogenation reactor;Pipeline

摘要：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.