Chemical-looping combustion (CLC) is a new combustion technology with inherent separation of the greenhouse gas CO2. The technology involves the use of a metal oxide as an oxygen carrier which transfers oxygen from combustion air to the fuel.
Chalmers started the development of CLC in 1998 and was first to successfully demonstrate this fundamentally new fuel conversion process in sustained operation in a 10 kW prototype unit for gaseous fuel in 2003. Moreover, Chalmers was first to operate CLC with solid fuel (2006) and liquid fuel (2011). Chalmers has more than 2500 h of operational experience of CLC in four units, the largest being a 100 kW dual circulating fluidized-bed for solid fuels. This involves operation of CLC with oxygen carriers based on nickel, iron and manganese oxides, as well as natural minerals. Moreover, Chalmers has investigated more than 300 different oxygen carrier materials in laboratory. The work involves a number of breakthroughs in different aspects of chemical-looping technology.
For further information see: http://www.entek.chalmers.se/~anly/co2/co2.htm