甲醇对N—甲基二乙醇胺降解的影响及对策研究

Effects of methyl Alcohol on Methyldiethanolamine Degradation and the Countermeasure

关键词:  甲醇 降解 甲基二乙醇胺 脱硫

Key words:  methanol, MDEA, degradation, inhibitory measures

摘要:

Ｎ－甲基二乙醇胺（ＭＤＥＡ）水溶液广泛用于造反性吸收脱硫工艺。国内外文献报道ＭＤＥＡ在工业上使用若干年以来除氧引起的降解处，几乎无其他降解物产生。而我国某厂用ＭＤＥＡ从酸性废气中回收Ｈ２Ｓ的装置却出现了胺液降解及设备腐蚀的现像。本文根据大量的分析和实验结果，对甲醇引起ＭＤＥＡ降解反应机理和原因进行详细地分析与讨论，并提出相应的抑制措施。

Abstract:

MDEA aqueous solution is widely used in the selective absorption desulfurization industry. Literature at home and abroad reported that during years use of MDEA in industry, except for the on caused by oxygen, there are nearly no other degraded products. B