Oxycombustion for coal power plants: Advantages, solutions and projects

In recent years oxycombustion has emerged as one competitive option for CO2 capture on coal power plants. quide has been a key contributor to this evolution by developing technology blocks essential to the technical feasibility, flexibility and economic competitiveness of oxycombustion. This concerns in particular the ASU (Air Separation Unit) and the CPU (Cryogenic Purification Unit) which represent the largest CO2 capture costs (Fig. 1). velopment carried out with boiler companies made oxycombustion potentially the most attractive carbon capture option for coal power plants. In addition to the highest efficiency, other advantages have become apparent:• rformances including:○ ffective CO2 recovery above 95% rity greater than 99.99% ter usage ero Air emissions and in particular zero chemicals emissions imited liquid and solid wastes exibility in design and operation including potential for energy storage through cryogenic liquids chemical” route per illustrates innovative solutions and experiences developed to overcome technical challenges and to provide new capabilities to the oxycombustion route. It also provides updates of oxycombustion projects under way including a few retrofit projects: Total Lacq, CIUDEN, Callide Oxyfuel and FutureGen 2.0.