Capture research is divided into a demonstration and a research part. The demonstration part is focused on generating knowledge about scale-up and large scale implementation in line with industrial user requirements. The research part targets break-through technologies that can potentially highly improve capture efficiency but are not expected to be ready for industrial application in the near future.

The various processes for capturing and purifying CO2 fall into three main categories:

• post-combustion
• pre-combustion and
• oxy-fuel combustion (which is also referred to as denitrogenated combustion

The optimal CO2 capture technique for a particular power plant or factory depends on specific characteristics such as the type of fuel used, the concentration of CO2 in the flue gas, the possibility of integrating the capture processes, available space on the plant site, pipeline infrastructure, and the availability of adjacent sources of heat, cold and gases.

As no single technology has yet emerged as a winner, CATO-2 is investigating a variety of promising capture processes of these three main routes. These routes each have their

work packages. A fourth package is dedicated to the comparison and benchmarking

of the several technologies.