乙烯装置甲烷制冷冷箱冻堵原因分析及处理措施

CAUSE ANALYSIS AND TREATMENT OF FREEZING AND BLOCKING OF METHANE REFRIGERATION COLD BOX IN ETHYLENE PLANT

针对中国石油独山子石化分公司220 kt/a乙烯装置甲烷制冷压缩机出口高压甲烷线冷箱系统堵塞的问题进行了原因分析,制定冲洗方案,并对冲洗后的系统置换及清洗过程的质量管控进行了总结,方案实施后解决了冷箱堵塞的问题。

In this paper,the causes of the blockage of high pressure methane line cold box system at the outlet of methane refrigeration compressor in the 220 kt/a ethylene plant of PetroChina Dushanzi Petrochemical Company are analyzed,a flushing scheme is developed,and the quality control during system replacement and cleaning after the flushing is summarized.This flushing scheme solved the problem of cold box blocking.