Throughout pilot testing at NCCC, ION confirmed its understanding of process improvements and analytics that will enable successful operation of its advanced solvent at significantly lower L/G circulation rates and regeneration energies. Additionally, ION demonstrated that it can successfully operate its advanced solvent in a pilot unit designed for traditional Aq-MEA solvent with minimal pilot modifications. ION has also validated its solvent specific ProTreat® simulation models during parametric and steady state testing and the analyses of solvent samples for solvent lifetime studies are still in progress. Total test hours for the program exceeded 1,100 hours. The NCCC results indicate that ION is making substantial progress towards DOE’s goals for second generation solvents. Additional objectives included: validation of ION’s solvent specific simulation capabilities, completion of 1,000 hours of continuous testing and an assessment of solvent lifetime. The overall objectives of this project are to advance ION’s solvent-based CO 2 capture process at the equivalent of approximately 0.6 MWe scale pilot in order to meet the Department of Energy’s (DOE) goal for second generation solvents of ≥ 90% CO 2 capture rate with 95% CO 2 purity at a cost of < $40/tonne CO 2 captured by 2025. On-site work began in April 2015, with testing completed from mid-June to mid-August 2015. The NCCC test facility utilizes a flue gas slipstream up to a maximum of 6,000 lb/hr from a commercially dispatched base-loaded 880-MW coal-fired boiler which supplies the NCCC test facilities. ION Engineering has recently completed a 0.6 Megawatts electric (MWe) Slipstream Pilot demonstration, at the National Carbon Capture Center (NCCC) located at Southern Company’s Plant Gaston in Wilsonville, Alabama. These results, in addition to CO 2 solvent carrying capacities 35% higher than Aq-MEA and significantly less solvent degradation, demonstrate that ION’s CO 2 capture technology has the potential to significantly reduce both capital and operating costs. Throughout small scale pilot testing with coal and natural gas fired flue gas, bench scale pilot and laboratory testing, ION’s advanced solvent has consistently demonstrated 30+% reductions in regeneration energy requirements in comparison to traditional aqueous monoethanolamine (Aq-MEA). ION Engineering’s advanced solvent is one of the leading second generation solvent systems currently under development for post-combustion carbon dioxide (CO 2) capture.
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