1.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.

1.摘要通过乙烯装置甲烷塔系统改造后况分，甲烷塔改造后态进了总结，并为更进一步优化工艺条件提出措施。