MHIEC Receives Order from Fukushima City to Rebuild Superannuated Waste-to-Energy Plant
Mitsubishi Heavy Industries Environmental & Chemical Engineering Co., Ltd. (MHIEC), a Group company of Mitsubishi Heavy Industries, Ltd. (MHI), has received an order from the Fukushima Municipal Government to rebuild the city’s Abukuma Clean Center Incineration Plant. The order calls for installation of two stoker-type incinerators(1) collectively capable of processing 120 tons per day (tpd), to replace the superannuated Abukuma Clean Center (240 tpd), originally designed and built by MHI and operated since 1988. Under the DBO(2) contract, MHIEC will also take charge of providing operation & maintenance services at the new plant for a period of 20 years. The contract is valued at 23.86 billion yen (tax excluded), with operation startup scheduled for April 2028.
Conceptual drawing of the new Abukuma Clean Center after completion
The new facility will employ state-of-the-art technology for municipal waste processing. Besides the two stoker-type incinerators, each having a processing capacity of 60 tpd, the plant will have a lighter environmental footprint enabled by reduced CO2 emissions, and provide highly efficient power generation. The heat energy generated during waste processing will be used to supply power to a nearby recycling plant and the health facility, Healthyland Fukushima, which will also receive high-temperature water. These features will make for an environmentally friendly facility open to residents that will advance Fukushima’s quest to be a “zero carbon city” achieving net zero greenhouse gas emissions by 2050.
Bidding for this project adopted a public proposal method, which took into consideration not only the bid price but also factors such as technological strengths and operating expertise. MHIEC’s proposal was selected as a result of the following points that impressed the client: the adoption of a new local electric power source with a 100% renewable energy ratio by a local company to reduce CO2 emissions, the use of waste-derived construction materials in the building to save resources, the use of a wooden administration building to enhance the view seen by visitors and from prefectural roads, and consideration of the landscape of the surrounding forest and parks. In constructing and operating the facility, MHIEC will work closely with a group of three local companies in Fukushima City.
MHIEC succeeded to MHI’s environmental protection business in 2008, taking over its accumulated technological development capabilities in environmental protection systems and abundant expertise in the construction and operation & maintenance of waste management facilities both in Japan and overseas. Based on this robust track record, the company is well positioned to propose comprehensive solutions encompassing all aspects from plant construction to operation & maintenance under DBO contract, and it can also respond to needs for after-sales servicing and maintenance. Going forward, MHIEC will continue to seek orders expansion worldwide through proactive offering of proposals for enhancing the efficiency of existing facilities, making incinerators more advanced through AI and IoT supported remote monitoring and automated operation, and lowering life-cycle costs (LCC).
(1) A stoker incinerator is the most widely adopted type of furnace used in waste-to-energy plants. Waste is combusted as it moves along on a fire grate made of heat-resistant castings.(2) Under a DBO (design, build, operate) contract, a local agency or other public body procures necessary funding and entrusts a facility’s design, construction and operation responsibilities to a private company while retaining its ownership.
About MHI Group
Mitsubishi Heavy Industries (MHI) Group is one of the world’s leading industrial groups, spanning energy, smart infrastructure, industrial machinery, aerospace and defense. MHI Group combines cutting-edge technology with deep experience to deliver innovative, integrated solutions that help to realize a carbon neutral world, improve the quality of life and ensure a safer world. For more information, please visit www.mhi.com or follow our insights and stories on spectra.mhi.com.
Mitsubishi Heavy Industries Environmental & Chemical Engineering Co., Ltd. (MHIEC), a Group company of Mitsubishi Heavy Industries, Ltd. (MHI), has received an order from the Clean Authority of TOKYO to rebuild the Kita Incineration Plant in Kita City, Tokyo. This municipal solid waste incineration plant with disposal capacity of 600 tonnes per day has been in operation since 1998, and has become superannuated. Completion and handover of the new facility is scheduled for February 2030.
Conceptual drawing of the completed new Kita Incineration Plant
The new plant will comprise two stoker incinerators(1), each with disposal capacity of 300 tonnes per day, and power generation equipment. The stokers to be used are V-type stoker waste incinerators with low loss on ignition(2), developed exclusively by MHIEC to further optimize the drying and combustion process compared to conventional stokers. This is the first use of this system in Japan. The plant will also incorporate high efficiency power generation using heat energy produced during the incineration process, as well as provide excess heat to nearby city facilities.
The V-type stokers to be installed in the new plant have an optimized stoker structure and incinerator shape with the surface of the stoker directed at the center of the flame during each of the processes of drying, combustion and post-combustion. The main benefit of this design is the ability to efficiently make use of radiant heat as the waste is combusted, helping to stably burn and reduce the volume of waste, which varies in terms of characteristics and conditions, and reducing the proportion of unburned combustibles in the post-combustion ash (unburned waste), contributing to a lower environmental load. The environmental performance and other benefits of this design were recognized in July 2022 with the receipt of the top “Ministry of Economy, Trade and Industry (METI) Minister’s Award” at the 48th Outstanding Environmental Systems Awards, hosted by The Japan Society of Industrial Machinery Manufacturers (JSIM).(3)
The tender for this project was conducted as a comprehensive evaluation that considered the technical aspects of the proposal along with the cost. MHIEC’s proposal was selected in recognition of the use an exterior design reflecting the history of the area that minimized the oppressive feel of the building, a reduced environmental load from CO2 fixation through appropriate use of lumber from the Tama area, and improved automated combustion control using sensing technologies and deep learning. The total tax excluded value of the contract, including dismantling and removal of the existing structure and construction of the new facility, is approximately 55.2 billion yen.
MHIEC succeeded MHI’s environmental protection business in 2008, taking over its technological development capabilities in environmental protection systems and extensive expertise in the construction, operation, and maintenance of waste management facilities. The company is well positioned to propose comprehensive solutions encompassing all aspects from plant construction to operations, while also responding to needs for after-sales servicing and long-term operation and maintenance. Going forward, MHIEC will continue to seek to expand its business worldwide through proactive offering of proposals for enhancing the efficiency of existing facilities, making incinerators more advanced through AI and IoT supported remote monitoring and automated operation, and lowering life-cycle costs (LCC).
(1) A stoker incinerator is the most widely adopted type of furnace used in waste-to-energy plants. Waste is combusted as it moves along a fire grate made of heat-resistant castings. (2) Loss on ignition represents the weight ratio of the unburnt content in the dried bottom ash. (3) For more information on the “METI Minister’s Award” for the V-type stoker at the 48th Outstanding Environmental Systems Awards, see the following press release: www.mhi.com/news/220727.html
About MHI Group
Mitsubishi Heavy Industries (MHI) Group is one of the world’s leading industrial groups, spanning energy, smart infrastructure, industrial machinery, aerospace and defense. MHI Group combines cutting-edge technology with deep experience to deliver innovative, integrated solutions that help to realize a carbon neutral world, improve the quality of life and ensure a safer world. For more information, please visit www.mhi.com or follow our insights and stories on spectra.mhi.com.
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Mitsubishi Heavy Industries Environmental & Chemical Engineering Co., Ltd. (MHIEC), a part of Mitsubishi Heavy Industries (MHI) Group, has delivered two state-of-the-art stoker furnaces* for a large-scale waste-to-energy (WtE) plant in Xiaogan, Hubei Province, China. This facility has capacity to process approximately 1,500 tonnes of waste per day, along with the capability to utilize waste heat from combustion to generate electricity. This is the first WtE plant in Xiaogan, and since the start of commercial operation in January 2021, has played a vital role in the life of the city as part of the environmental infrastructure.
Xiaogan Waste-to-Energy Plant
MHIEC is a leading company in the waste management industry, having supplied more than 300 waste treatment facilities in Japan and around the world, with more than 50 incinerators delivered to China since the 1980s. The advanced incinerators provided for this plant have enhanced combustion efficiency to allow for stable treatment of waste with high moisture content. Going forward, MHIEC will utilize its capabilities for technical development in the environmental facilities field accumulated over many years to support the creation of eco-friendly cities in China.
MHIEC, through construction and operation of WtE plants and other facilities that contribute to lowering the environmental load by means of the effective utilization of energy, will continue to work toward achieving the UN Sustainable Development Goals (SDGs), and resolving global environmental issues.
* A stoker furnace is an incinerator in which waste is placed on a bed of heat-resistant metal castings (a stoker) to be dried, heated, and incinerated while being stirred.
Project Summary Client: Xiaogan City, Hubei Province, China Operator: Grandblue (Xiaogan) Solid Waste Treatment Co., Ltd. Construction Contractor: Grandblue Engineering Technology Co., Ltd. Project Name: Xiaogan Garbage Incinerating Power Plant Project Capacity: Stoker furnace 1,500 tonnes per day (750 t/day x 2) , power generation capacity 35 megawatts (MW) Start of Operations: January 2021 Tags: waste to energy plant,energy saving,MHIEC
About MHI Group
Mitsubishi Heavy Industries (MHI) Group is one of the world’s leading industrial groups, spanning energy, logistics & infrastructure, industrial machinery, aerospace and defense. MHI Group combines cutting-edge technology with deep experience to deliver innovative, integrated solutions that help to realize a carbon neutral world, improve the quality of life and ensure a safer world. For more information, please visit www.mhi.com or follow our insights and stories on www.spectra.mhi.com.
