MHI received the CO2 capture system order from Petra Nova CCS, a special-purpose company of NRG Energy and one of the companies implementing the project, through Mitsubishi Heavy Industries America (MHIA), a wholly owned subsidiary of MHI in the US.

The system will capture CO2 from flue gas from a coal-fired power generation plant and will have a CO2 capture capacity of 4,776 tonnes per day. The system is slated for completion in the fourth quarter of 2016.

The project involves the separation and capture of CO2 from flue gas emitted from Unit 8 of NRG’s WA Parish generation station, a coal-fired power generation plant about 60km southwest of Houston, and injection of the CO2 into nearby West Ranch oil field to boost crude oil production.

The CO2 capture system will consist of a flue-gas quencher, absorber and regeneration system, CO2 compression unit, and utility facilities. It will have a CO2 capture efficiency of 90%. MHI will license CO2 capture technology to Petra Nova through MHIA.

The MHI consortium will undertake engineering, procurement and construction of the CO2 capture system and its ancillary facilities.

MHI’s CO2 capture technology is the KM CDR Process, which uses a proprietary KS-1 TM high-performance solvent for CO2 absorption and desorption that was jointly developed by MHI and the Kansai Electric Power.

Compared with other CO2 capture technologies, the KM CDR Process uses less energy, MHI said.