文献类型：会议论文

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

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

机构：[1]E China Univ Sci & Technol, MOE Key Lab Safety Sci Pressurized Syst, Shanghai 200237, Peoples R China

会议论文集：Fracture Mechanics Symposium (FM2008)

会议日期：OCT 31-NOV 05, 2008

会议地点：Hangzhou, PEOPLES R CHINA

语种：英文

外文关键词：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 hydrogenation 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 hydrogen 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.