Process Performance of Non-aqueous Amine-based CO_2 Capture Solvents

摘要

ION Engineering is developing a number of novel solvents for post combustion carbon capture and has recently completed a number of studies to compare the potential advantages of these new solvents to aqueous monoethanolamine (MEA) for both in a pulverized coal-fired flue gas and natural gas combined cycle (NGCC)-fired flue gas. The comparison between ION's novel solvent and aqueous MEA shows that ION's solvent requires 21% and 29% less total regeneration energy for coal and NGCC conditions respectively. Additionally, ION solvents required 22% and 26% less net thermal energy to regenerate the solvent, coal and NGCC conditions, respectively The test runs in ION's 9 gph pilot scale absorber showed that ION's solvent absorbed 57% more CO_2 from the NGCC flue gas than an aqueous MEA when operated under similar conditions. Based on the positive outcomes of these studies, ION is currently conducting solvent tests using actual coal-fired and NGCC-fired flue gas at the Energy & Environmental Research Center (EERC) in North Dakota with funding from both DOE/NETL and CCP3. Pending the outcome of these test campaigns, ION plans to initiate larger slipstream studies in early 2014.