根据现场乙烯冷箱的泄漏组分主要为甲烷,结合冷箱的流程图和换热器结构图,分析可能的泄漏通道,制订检修方案,最终通过压力试验,确定漏点位置并采取有效的封堵措施。介绍乙烯冷箱泄漏后检修工作的难点和引起泄漏的主要原因。 According to the leakage of ethylene cold box site mainly methane, combined with the flow chart of the cold box and the heat exchanger structure, analysis of possible leakage channels, development of maintenance programs, and finally through the pressure test to determine the location of the leak and take an effective seal Blocking measures. Describe the difficulties of overhauling and maintenance after the leak of ethylene cold box and the main reason causing the leakage.