日本地球惑星科学連合2015年大会

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セッション記号 H (地球人間圏科学) » H-RE 応用地質学・資源エネルギー利用

[H-RE28] 地球温暖化防止と地学(CO2地中貯留・有効利用,地球工学)

2015年5月25日(月) 09:00 〜 10:45 105 (1F)

コンビーナ:*徳永 朋祥(東京大学大学院新領域創成科学研究科環境システム学専攻)、薛 自求(財団法人 地球環境産業技術研究機構)、徂徠 正夫(独立行政法人産業技術総合研究所地圏資源環境研究部門)、座長:徳永 朋祥(東京大学大学院新領域創成科学研究科環境システム学専攻)

09:45 〜 10:00

[HRE28-03] 火力発電所における炭酸ガス分離回収技術

*辻内 達也1登里 朋来1遠藤 崇彦1大石 剛司1 (1.三菱重工業株式会社)

キーワード:CO2回収貯留, 炭酸ガス, 分離, KS-1吸収液, KM CDR Process

It is now widely agreed that capturing CO2 from flue gases and the subsequent injection into geological formations can significantly contribute to reducing CO2 emissions, the principal greenhouse gas. As well as having benefits in terms of reducing CO2 emissions into the atmosphere, the deployment of Carbon Capture and Storage (CCS) can also allow nations around the world to continue using important domestic fossil fuels, such as coal, in an economic and environmentally sustainably way. Among the CCS technology, Enhanced Oil Recovery (EOR) utilizing anthropogenic CO2 is believed to be an effective use of CO2. For commercialization of CCS and EOR, scale-up of equipment and energy reduction for CO2 capture and compression are essential considerations.

Mitsubishi Heavy Industries, Ltd. (MHI) has developed a high efficiency chemical solvent process to capture CO2 from the flue gas, the KM CDR Process, in collaboration with Kansai Electric Power Co., Inc. Since 1990 MHI has continued R&D programs of CO2 capture technologies using laboratory research and the CO2 recovery pilot plant at Nanko Power Station. As a result, the KM CDR process has been applied to eleven (11) commercial CO2 capture plants for natural gas-fired boilers or heavy oil-fired boilers and all of these plants are now in commercial operations.

MHI has also focused on carbon capture technologies for coal fired power plants since 1999, performing numerous test programs for plant performance, optimization, and evaluation of flue gas impurities and their impact at the 1 tonne per day pilot test facility at MHI's R&D center in Hiroshima, Japan. MHI also completed several test programs capturing CO2 utilizing the 10 tonnes per day slip stream test facility from the flue gas of a commercial 500MW coal fired power plant in Matsushima, Japan in 2006. Based on these R&D commercial experiences and scale-up studies, Southern Company Services, Inc. and MHI successfully started the world's first full chain anthropogenic carbon capture and sequestration (CCS) project applied to a coal-fired power plant. The plant, with a CO2 capture capacity of 500 tonnes per day, began operation in June 2011 at Alabama Power Company's James M. Barry Electric Generating Plant, and 100,000 tonnes of CO2 has been successfully injected into a geologic structure, the Citronelle Dome, as part of the Department of Energy (DOE) funded Southeast Regional Carbon Sequestration Partnership (SECARB) phase-III "Anthropogenic Test".

In July 2014, MHI received an order for the world's largest post-combustion CO2 capture plant (with a CO2 capture capacity of 4,776 tonnes per day) from an enhanced oil recovery (EOR) project mainly promoted by NRG Energy Inc. and JX Nippon Oil & Gas Exploration Corporation. Captured CO2 will be utilized for EOR at mature oil fields in the Gulf Coast region in U.S.. The operation will be started in 4th quarter, 2016 and it is expected that oil production will be enhanced from 500 barrels/day to approx. 15,000 barrels/day. Furthermore, 1.4 million metric tons of greenhouse gas will be used annually or injection into geological formations.

This presentation will introduce MHI's CO2 capture technologies and the current activities including the results of the CO2 capture and storage demonstration test.