Oxy-combustion CPU – From Pilots Towards Industrial-scale Demonstration

The CPU (Compression and Purification Unit) is used to capture, purify and compress the CO 2 contained in oxy-combustion boiler flue gas. Therefore, it plays a key role in the oxy-combustion route for carbon capture and storage (CCS). Over the last ten years Air Liquide has been developing this technology from a conceptual stage towards industrial maturity. Since the last GHGT conference in 2012 [1] , significant progress has been made. The objective of this paper is to present an overview of the progress made in developing the technology with a particular focus on results from pilot plants, and the intended application of key technology developments to the FutureGen 2.0 project.