MHIENG Completes Testing of “KS-21TM” Solvent for CO2 Capture

Mitsubishi Heavy Industries Engineering, Ltd. (MHIENG), based in Yokohama, has concluded testing of its new proprietary solvent for capturing CO2 at the Technology Centre Mongstad (TCM)(Note1) in Norway, one of the world’s largest carbon capture demonstration facilities that is recognized for its state-of-the-art equipment and specialized expertise. These outstanding test results complete MHIENG’s commercialization of KS-21TM, a new amine-based solvent used in the “Advanced KM CDR ProcessTM(Note2)” developed by MHIENG in collaboration with The Kansai Electric Power Co., Inc. (KEPCO), and paves the way for the future expansion of MHIENG’s carbon capture, utilization and storage (CCUS) business.

The testing was carried out between early May and late August 2021 in Norway, one of the world’s most advanced nations in the field of carbon capture. The KS-21TM’s performance was tested to confirm a carbon capture rate of 95-98%, which is above the current industry standard (approx. 90%), from flue gas emitted by a gas turbine at TCM’s test facility.

The results indicate outstanding energy-saving performance, reduced operating costs and low amine emissions(Note3), which exceed both the amine-based solvent, Monoethanolamine (MEA), used in the chemical absorption process and our existing solvent, KS-1TM. In addition, in testing conducted under modified operating conditions, the KS-21TM solvent delivered an industry-leading carbon capture rate was 99.8% and demonstrated the successful recovery of CO2 from flue gas of lower concentration than the CO2 contained in the atmosphere. Identical tests were performed for flue gas emitted by a fluidized catalytic cracker at the Mongstad refinery located adjacent to TCM, and obtained identical results.

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