气分换热器结焦原因分析

Analysis on the Cause of Coking in the Heat Exchanger of A Gas Fractionator

关键词:  结焦 MDEA 氧化 降解

Key words:  coking, MDEA, oxidation, degradation

摘要:

根据生产装置所采用化工原材料和流程，并结合气分换热器结焦物组分分析，认为气分车间换热器结焦的原因为重催液化气中携带脱硫剂N-甲基二乙醇胺焦化产物类物质，在装置运转过程中降解、聚合形成的结焦物造成的。在实验室合成了与气分车间基本一致的结焦物，更进一步证实了上述结论，并据此提出了抑制结焦的解决办法。

Abstract:

According to the raw materials and flow sheet employed by the unit, and the coke composition a-nalysis result in the heat exchangers of a gas fractionator, it was concluded that the formation coke was resulted from degradation and polymerization of the de