This article analyze the condition of demethanizer after revamping . the operation state afterwards the revamp is summarized and further optimization of the demethanizer is given in the paper 摘要通过乙烯装置脱甲烷塔系统改造后的运行状况的分析，对脱甲烷塔改造后的运行状态进行了总结，并为更进一步的优化工艺条件提出措施。
