低能耗MDEA脱碳新工艺进展

Advances in the new energy-saving MDEA CO2 removal process

阐述了MDEA脱碳的主要优点及脱碳原理,提出了主要工艺条件及技术指标。结果表明,采用MDEA脱碳,可使净化气中CO2含量<1 00ppm,最低可达5ppm;CO2回收率>99%,回收的CO2纯度>99.8%。

The main advantages and principles of the MDEA carbon dioxide removal process are described in the paper.The process conditions and technical data are also presented.After CO_2 removal the CO_2 content in the purified gas is less than 100 ppm (minimum 5 ppm); the recovery of CO_2 is above 99% and the purity of CO_2 recovered exceeds 99.8%.This will benefits the CO_2 balances in the ammonia synthesis unit and methanation system as well as the improvement of the middle and small sized ammonia plants.