Mitsubishi completes CO2 capture system for Petra Nova Carbon Capture Project

Mitsubishi Heavy Industries America, NRG Energy and other partners completed construction of a post-combustion carbon capture and compression system.

“Completion of the Petra Nova project is an important milestone in our quest to help ensure reliable, affordable and increasingly cleaner energy from fossil fuels,” said Mauricio Gutierrez, president and CEO of NRG Energy. “This project represents another major step in NRG‘s effort to reduce our carbon emissions and create a more sustainable energy future, and we are proud that this accomplishment was achieved on-budget and on-schedule in a competitive energy environment. I want to thank our partners at JX Nippon, Hilcorp and the U.S. Department of Energy as well as the State of Texas, our contractors and lenders for their commitment to the successful completion of this landmark project.”

Managed and executed in the U.S., the system is based on MHI’s KM CDR Process and KS-1 amine solvent which was jointly developed by MHI and Kansai Electric Power Co. and is used for CO2 absorption and desorption.

The system captures CO2 from a 240 MW equivalent coal exhaust slipstream from Unit 8 at NRG’s W. A. Parish coal-fired generating station in Thompsons, Texas, and is rated at 4,776 metric tons per day of CO2 captured.

the United States Department of Energy is providing up to $190 million in grants as part of the Clean Coal Power Initiative Program, a cost-shared collaboration between the federal government and private industry. A portion of the project was financed with project loans from the Japan Bank for International Cooperation and Mizuho Bank, backed by Nippon Export and Investment Insurance.

MHIA, together with MHI, licensed and provided the KM CDR Process and KS-1 solvent and delivered overall system design services, engineering, procurement for major system equipment (from primarily U.S.-based vendors), operator training, and commissioning support. MHIA formed a consortium with TIC (The Industrial Co.) for execution of a full turnkey contract of the CO2 capture plant. The MHIA — TIC consortium was awarded in July 2014, began construction in September 2014 and completed the performance tests in December 2016.

The CO2 capture and compression system at the W.A. Parish coal-fired generating station is part of the Petra Nova Carbon Capture Project which is jointly promoted by NRG and JX Nippon Oil & Gas Exploration Corp. (JX Nippon). Captured CO2 will be transported through an 81-mile pipeline and used for enhanced oil recovery at the West Ranch Oilfield, located on the Gulf Coast of Texas.

MHI has, through successful deployment of the KM CDR Process and KS-1 Solvent, delivered 11 commercial plants for natural gas and oil combustion exhaust gases and holds an outstanding market share in the world in the field of post combustion CO2 capture. CO2 capture application to coal-fired power stations is a cutting-edge technology that requires highly sophisticated tools and know-how to treat various impurities contained in flue gases.

MHI has taken several steps to commercialize the technology, including extensive R&D efforts. In 2006, MHI successfully conducted a demonstration test, at a scale of 10 metric tons per day, in cooperation with Electric Power Development Co., Ltd. (J-POWER). In 2011 MHI, together with Southern Co., successfully proved the reliability of the KM CDR Process in a joint demo project at Alabama Power’s Plant Barry coal-fired generating station, operating at a scale of 500 metric tons per day.

MHIA’s involvement in the Petra Nova Carbon Capture Project is part of the company’s ongoing efforts to contribute to the development of a sustainable society through innovative technological solutions.

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