Abnormal phenomenon of high water content in methanol in rectisol system and its countermeasure
The high water content in methanol in the rectisol system of CNOOC Huahe Coal Chemical Co.,Ltd.led to low methanol absorption efficiency,system corrosion,and affected the system load.Through the analysis,it was found that the high water content in methanol was mainly due to the unstable working conditions of methanol/water separation tower.Thus,specific technical transformations were carried out,such as adding the material filter of the raw gas separator,adding the automatic control lye system in the tail gas water scrubber and reducing the wastewater discharge temperature of the methanol/water separation tower.Through the technical renovations of the auxiliary pipes and equipment of the methanol/water separation tower,the problem of pipeline and equipment leakage was completely solved,ensuring the stable condition of the methanol/water separation tower.
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