Development of A Novel Reclaiming Process for Degraded Solvents and Glycols from Industrial Gas Processing and Purification

Abstract

Densities, viscosities, refractive indices and electrical conductivities of both artificial degraded and industrial degraded MEA solutions were measured at standard temperature of 298.15 K or 293.15 K. These measurement data are not currently available for the degraded MEA solutions and the reported values are particularly important for monitoring solvent quality and plant performance. A new reclaiming process was developed to continuously separate degradation products and other types of impurities from the solvent. The detailed analysis of the feed stream, the recovered product stream, and the waste stream showed that this novel reclamation technology is capable of removing most of undesirable impurities and restoring the solvent to its original purity at a high recovery rate. The data would be useful for scaling-up and designing the commercial reclaimers, which can meet the solvents’ cleanup targets at low expenditures, low energy consumption, and minimum waste for disposal.