| Power from waste & biomass
Recent Mitsubishi successes: incinerator rebuild and compact carbon capture
The capture system was installed by Mitsubishi Heavy Industries Engineering (MHIENG) at the Seifu Shinto biomass power plant, located in a suburb of Hiroshima City.
It has the capacity to capture 0.3 metric tons per day (tpd) of CO2
is “based on a highly versatile standardised design”, requiring an installation space of just five meters in length and two meters wide, with modular construction enabling “rapid transportation to the site and easy installation.” The CO2
Above: Nagasaki Shin-Higashi waste-to-energy plant
MHIEC (Mitsubishi Heavy Industries Environmental & Chemical Engineering), part of MHI (Mitsubishi Heavy Industries), has received an order from the Nagasaki municipal government for rebuilding and operation & maintenance of the city’s Shin-Higashi (New East) waste-to-energy plant. The order calls for installation of two stoker-type incinerators, collectively capable of processing 210 tonnes per day (tpd), to replace the superannuated Higashi (East) waste-to-energy plant (300 tpd) originally designed and built by MHI and in operation since 1988.
Under a DBO (design, build, operate) contract, MHIEC will also take charge of providing operation & maintenance services for the new plant for a period of 20 years (while ownership remains with the municipality of Nagasaki). The contract is valued at 27.59 billion yen (about $184 million), with startup scheduled for April 2026.
The rebuilt facility will employ state-of-the-art technology for municipal waste processing, says MHIEC. Besides the two stoker-type incinerators,
each having a processing capacity of 105 tpd, the plant will have a reduced environmental footprint. Heat produced during waste combustion will be used to supply hot water to the nearby Nagasaki Higashi Park community. Bidding for the Shin-Higashi waste-to-energy plant reconstruction project employed a holistic evaluation method, taking into consideration not only the bid price but also factors such as bidders’ technology strengths and operating expertise.
Compact carbon capture As well as having a strong track record in municipal waste-to-energy, Mitsubishi is also involved in developing innovative technologies for small-scale biomass-fuelled power plants. A milestone achieved earlier this year was the entry into commercial operation of a world-first compact carbon capture system for a 7 MW biomass power plant, rendering the facility “carbon negative.”
Right: Seifu Shinto biomass power plant (photo courtesy of Taihei Dengyo Kaisha, Ltd)
Waste-to-wheels in Germany
A “waste-to-wheels” study by Tractebel, focusing on the Rhine-Main region in the centre of Germany, shows that waste-to-energy plants could be a cost-effective way to produce green hydrogen to decarbonise transport.
As part of the HyExperts project MH2Regio, Tractebel developed a strategy for implementing a regional hydrogen infrastructure in Frankfurt/Main. The federal government supported the project with funds from the HyLand funding programme.
The focus was on the Nordweststadt waste- to-energy plant. The Tractebel study set out a technologically and economically optimal concept for a complete hydrogen infrastructure – from electrolysis to delivery to the refuelling station.
Felix Knicker, project engineer at Tractebel, commented that, due to their special circumstances, “waste-to-energy plants have the potential to become nuclei for the development of regional hydrogen infrastructures.” Such plants tend to be located in convenient locations for such a role and “according to our findings, green hydrogen can be produced cheaply at waste-to-energy plants.”
Left: The focus of the Tractebel study: Nordweststadt waste-to-energy plant (Image: Mainova AG)
www.modernpowersystems.com | October 2022 | 23 and, according to Mitsubishi,
captured from the plant’s flue gas will be used to support the growing of vegetables in on-site greenhouses.
The power plant is operated by Taihei Dengyo Kaisha Ltd and was originally supplied by Mitsubishi (entering service in October 2019). As a next step, MHIENG was planning to perform demonstration tests of operational support services for the capture plant using a proprietary remote monitoring system. MHIENG says it plans to expand its lineup of compact CO2
capture systems and to pursue
reduced installation, operation and maintenance costs, as well as shorter delivery times.
Page 1 |
Page 2 |
Page 3 |
Page 4 |
Page 5 |
Page 6 |
Page 7 |
Page 8 |
Page 9 |
Page 10 |
Page 11 |
Page 12 |
Page 13 |
Page 14 |
Page 15 |
Page 16 |
Page 17 |
Page 18 |
Page 19 |
Page 20 |
Page 21 |
Page 22 |
Page 23 |
Page 24 |
Page 25 |
Page 26 |
Page 27 |
Page 28 |
Page 29 |
Page 30 |
Page 31 |
Page 32 |
Page 33 |
Page 34 |
Page 35 |
Page 36 |
Page 37 |
Page 38 |
Page 39 |
Page 40 |
Page 41 |
Page 42 |
Page 43 |
Page 44 |
Page 45 |
Page 46 |
Page 47 |
Page 48 |
Page 49 |
Page 50 |
Page 51 |
Page 52 |
Page 53 |
Page 54 |
Page 55
