Mitsubishi Heavy Industries, Ltd. (MHI) development of large-capacity, high-efficiency gas turbines co-firing hydrogen with DLN combustors dates back to the mid-2010s and it is expanding its carbon-free power generation system lineup with a target to achieve carbon neutrality by 2050. Following the above target, several successful verifications and demonstrations have been conducted on actual-equipment, including the latest M501JAC gas turbine (rated output: higher than 450-MW), applying natural gas-hydrogen co-firing with a hydrogen blend ratio of 30 vol%. Similar efforts are ongoing with verification of the medium-size/small gas turbine H-25 (rated output: higher than 40-MW) for 100% hydrogen firing (dry). In addition, two different concepts are being developed and verified for ammonia-usage to be applied to MHI gas turbines as soon as possible: i) an ammonia single-fired system and ii) a high-efficiency SCR (Selective Catalytic Reduction) system for medium-size/small gas turbines.
