MDEA脱碳溶液污染原因与净化技术探讨

Discussion on the Pollution Causes and Purification Technologies of MDEA Decarbonization Solution

MDEA溶液作为合成氨生产过程中的关键脱碳介质,尽管其具有优异的脱碳性能和化学稳定性,但在实际运行中易受到原料气携带的污染物、设备材料腐蚀产物、氧化产物、外来杂质及再生过程副产物的污染,导致脱碳效率降低、运行成本增加、设备寿命受损。通过剖析MDEA溶液污染物的来源,对离子交换树脂净化和蒸发净化两种典型净化工艺进行了对比分析,并明确了各自的优缺点,为合成氨脱碳溶液的净化提供参考。

MDEA solution,as a key decarbonization medium in the production process of synthetic ammonia,although it has excellent decarbonization performance and chemical stability,is easily contaminated by pollutants carried by feed gas,corrosion products of equipment materials,oxidation products,foreign impurities,and by-products of regeneration process in actual operation,resulting in reduced decarbonization efficiency,increased operating costs,and damaged equipment life.This article provides an in-depth analysis of the sources of pollutants in MDEA solutions,and compares and analyzes two typical purification processes,ion exchange resin purification and evaporation purification,clarifying their respective advantages and disadvantages,providing practical reference for the purification of decarbonization solutions in synthetic ammonia.