The Use of MDEA and Mixtures of Amines for Bulk CO2 Removal

In the past 10 years, numerous plants have been built or converted to methyldiethanolamine (MDEA) to take advantage of its selective absorption capability. In selective absorption, the H2S is selectively absorbed from the gas leaving large amounts of CO2 in the gas. The selective absorption characteristics of MDEA have been reported to a large degree in References 1-8. MDEA is well known for its relatively slow reaction rate for CO2. A