Advancing chemical-looping combustion of domestic fuels

The high cost of CO2 capture is an important barrier to a wider application of Carbon Capture Utilization and Storage (CCUS). The ACLOUD project will develop and demonstrate a technology that can increase capture rate, reduce energy penalty, and improve cost-efficiency of CO2 capture. The technology is Chemical-Looping Combustion (CLC). Further, CLC offers a possibility to improve efficiency during utilization of waste-derived fuels. This is because volatile ash species will be concentrated to a small part of the boiler, the fuel reactor. This should relax material and design criteria of the rest of the boiler, where the majority of the heat transfer surfaces are located. In practice, this should allow for improved steam data and higher electric efficiency. In the project, CLC will be demonstrated at TRL6 with difficult fuels such as residues and waste. Also, new and improved methods will be applied to measure and characterize the impact of relevant ash species. This will allow firm conclusions about advantages with respect to corrosion and electric efficiency. The academic project partners are leading institutions in the areas of CLC and corrosion in boilers. The industrial partners include providers of boilers, superheater tubes and boiler services, as well as several potential end users. The project is well aligned with the R&D areas targeted for TRI module 3.1 as it involves CO2-capture from heavy industry sectors and advancing lower cost capture technologies.