MHI Group Presents “Best Innovation 2022” Awards for Activities that Contribute to Mitigating Impacts on the Global Environment -- Target on Achieving a Sustainable Society through Ongoing Advances in the Company’s Growth Strategy Areas --

MHI safely completed the design, manufacture, inspection, on-site construction and trial operation of a specialized safety facility (SSF) for nuclear power plants (NPPs), in response to calls for their installation under what are said to be the world’s most stringent new regulatory standards. From formulation of the basic concept through to facility construction, MHI quickly completed the SSF for a pressurized water reactor (PWR) NPP, and based on its performance results and the acquired expertise, the Company have proactively been also working on an SSF for a boiling water reactor (BWR) NPP. As Japan’s first facility specifically targeting backup safety and anti-terrorist protection, SSFs will further improve the safety and reliability of NPPs. The development project also demonstrated the outstanding level of MHI Group’s comprehensive engineering capabilities.

MHIENG developed a compact CO₂ capture system to contribute to carbon neutrality for small to medium scale industrial emitters by applying the Company’s proprietary “KM CDR Process™” (jointly developed with The Kansai Electric Power Co., Inc.), which has been applied to large-scale facilities such as power generation systems, chemical plants, etc. Standardized modular design enables lower cost and shorter lead time as compared to conventional approach, and it also provides easy transportation and installation in locations with limited space. These enhancements have expanded the range of applications of “KM CDR Process™” and exemplified by the system’s adoption in the first commercial operation at a biomass-fired power plant. Demonstration testing has already been conducted at a waste incineration facility (waste-to-energy plant), a cement plant and gas engine application. Today the lineup is being expanded and a fully integrated customer support system is under development that will encompass new services such as automated operation and remote monitoring and after sales servicing. The new compact CO₂ capture system has been named “CO₂MPACT” (trademark registration pending), and with the name MHIENG will aim for a stronger market presence worldwide.

Performance of the EVOL, MHI-MS’s best-selling corrugated box making machines, has been newly optimized with the addition of two peripheral systems: a dual slotter unit (DSL) and prefeeder (MPF). Conventionally, one corrugated sheet is used to make one box; but with the DSL, two boxes can be made from a single sheet, thereby doubling production capacity. The MPF enables automated stable paper feeding to the EVOL at high speed. With the earlier EVOL, from 400 sheets a maximum of 400 boxes per minute can be printed, slotted, creased, pasted and folded, generating stacks of 20 to 25 boxes per operation. But with an EVOL equipped with the DSL, the same 400 sheets can yield up to 800 boxes per minute. With the synergy derived from a high-reliability after sales servicing system, the newly enhanced EVOL has already garnered strong support from users in North America and around the world.
Video introducing the EVOL: https://youtu.be/j7eWsLbzIoE

MHI Thermal Systems has commercialized high-efficiency, large-capacity parallel (i.e., featuring dual compressors) centrifugal chillers that consume minimal energy and are adaptable to lower environmentally impact refrigerants. As the global strategic product for the centrifugal chiller business, to date approximately 70 parallel type centrifugal chillers have been delivered mainly for the district cooling plant and semiconductor factory in the Middle East, Singapore, Korea and Japan. Their outstanding quality and high reliability have contributed significantly to enhance market recognition of MHI Thermal Systems in the global market. In addition, they also have contributed to reduce the carbon emissions substantially along with environmental protection by the adoption of lower environmentally impact refrigerants and higher energy efficiency characteristic compared to the conventional machine.

Waste materials from composite wings produced for Boeing’s 787 mid-size aircraft is being reused in household application. Carbon fiber waste material generated during the wing production process is commercially repurposed for use in the pipes and handles of the “iNSTIK ZUBAQ,” a cordless stick cleaner produced by Mitsubishi Electric Corporation. The move has put MHI in the lead in building a supply chain that includes reuse of difficult-to-recycle carbon fiber waste material in a mass-manufactured product. Effective use of resources has contributed to mitigation of environmental impact and protection of the global environment, thereby enhancing the Company’s corporate image.

MHI has successfully demonstrated world’s largest hydrogen fuel blending operation in a high-efficiency large frame GTCC (gas turbine combined cycle) under both partial and full load conditions. The achievement was made based on the Company’s accumulated experience and technology developments in hydrogen combustion, and the technology was applied in M501G GTCC power generation plant in use in the United States. The demonstration proved a combustion stability with use of a 20% hydrogen fuel blend. With hydrogen-blended combustion using a dry low NOx combustor, a turbine inlet temperature equivalent to natural gas firing was maintained, and hydrogen firing successfully kept emissions within the compliant range. What’s more, while keeping emissions regulations, ability to lower the minimal operational load was also confirmed. This was the largest-scale test ever of hydrogen-blended fuel in a large frame GTCC, and it marked a major step toward achieving practical use of a hydrogen gas turbine.
For further information about the project, please visit: https://www.changeinpower.com/mcdonough/

MHIEC developed a V-shaped stoker type waste incinerator enabling low ignition loss (ratio of the unburnt content in the bottom ash), further optimizing the drying and combustion processes of the stoker type incinerators used in waste-to-energy plants. In order for the surface of the stoker grates to be directed at the center of the flame during all processes – drying, combustion and post-combustion – the incinerator is designed in “V-shaped” that leads to stable incineration as well as to reduce the volume of waste materials of diverse water content and other properties and states. The result is reduced ignition loss and increased incineration capacity per unit area of the stoker. In addition to greater combustion performance, the proprietary V-shaped structure simultaneously enables a more compact unit.

MHI has achieved low noise in automotive double scroll turbochargers by aerodynamic, vibration and other technologies. Noise is an issue of critical importance, and its resolution is expected to attract large-scale orders in the European market. Achieving low noise and low fuel consumption by high turbine performance was made possible by pursuing the optimized shape of the turbine blade’s leading edge and optimal number of blades to minimize noise when installed in the customer’s automotive engines. Noise reduction level was -13dB while maintaining aerodynamic performance. The low-noise concept is also applicable for reducing the aerodynamic noise of other turbomachines.

MHI, in collaboration with four Japanese utilities employing pressurized water reactors (PWRs)(Note), is developing the conceptual design of an advanced light water reactor, the “SRZ-1200.” The SRZ-1200 achieves the world’s highest level of safety through incorporation of new safety mechanisms, including a core catcher – the world’s newest technology for molten core materials of a nuclear reactor – and MHI’s proprietary system to prevent emissions of radioactive materials. These and other innovations came on the back of the Company’s accumulated technologies and expertise in the construction and maintenance of all 24 PWRs in Japan. Through proactive publicity – including press releases, promotional videos, etc. – MHI broadly conveys its specific initiatives and outstanding technological capabilities in the nuclear energy business, toward realizing a carbon neutral society and enhancing energy security, and these activities have contributed solidly to enhancement of MHI Group’s public image.

• Hokkaido Electric Power Co., Inc.; The Kansai Electric Power Co., Inc.; Shikoku Electric Power Co., Inc.; Kyushu Electric Power Co., Inc.

The “Best Innovation” program has been held annually since 2003 to recognize innovative new products, services, technologies, businesses and environmental activities within MHI Group, and going forward the Company will continue to pursue further technological innovations. By providing the world with outstanding products and technologies, MHI Group looks to simultaneously contribute to realization of a sustainable society and to enhance its corporate value through the long term.