The carbonate looping principle represents an attractive alternative to other systems of CO2 capture, as the energy consumption associated with it is relatively low and, for this reason, this approach is very well-suited as a retrofit technology for existing plants.
Another alternative is the so-called chemical looping process, an innovative technology for converting fossil fuels for the purpose of energy production. In both processes, carrier materials are circulated in a loop. With carbonate looping, CO2 is absorbed and then calcinated, and the carrier material (e.g. calcium) is circulated in a loop. In the case of chemical looping, a metal oxide is circulated in a loop as the oxygen carrier (alternating reduction and oxidation). Read more