Valmet will supply a multifuel power boiler and a flue gas cleaning system to Air Water & Energia Power Onahama Corporation at Onahama Plant located at Iwaki City, Fukushima Prefecture, Japan. The new CFB boiler will enable the power plant to achieve a stable power supply at high thermal efficiency while significantly reducing CO2 emissions. The order is already the fifth received order for Valmet’s CFB boiler to the Japanese market during the last couple of years.

The order was included in Valmet’s first quarter orders received in 2018. The value of this kind of order is typically around EUR 40 million. Installation work is scheduled to start in 2019, and the plant will start commercial operation during the first half of 2021.

The project will be delivered in cooperation with the Japanese company JFE Engineering Corporation. JFE will be the EPC contractor for the Onahama biomass power plant.

“We like to collaborate with an experienced technology provider who can deliver high capacity biomass and multifuel boilers and has an extensive understanding of reheater systems. We strongly believe in Valmet’s unique finishing superheater and reheater technology and the fuel flexibility,” says Keiichi Nagaya, Director, Head of Technical Strategy & Administration in Energy Sector, JFE Engineering.

Technical information about Valmet’s delivery

Valmet’s delivery includes a biomass fired 75 MWCFB boiler (Valmet CYMIC) and a flue gas cleaning system. The annual output of the Onahama power plant will be over 5 million kWh, and the main fuels to be used include palm kernel shells and wood pellets. All the electricity generated will be supplied to the grid companies based on feed-in tariff scheme in Japan.

“High combustion efficiency in Valmet’s CYMIC boiler will be achieved due to good mixing and long char residence time. It is also important to have high steam parameters available for demanding fuels, like agro-based biomass, in order to meet the high expectations for boiler efficiency,” says Kai Janhunen, Vice President, Energy business unit, Valmet.