Negative CO2 emissions in the lime production using an indirectly heated carbonate looping process

Abstract Lime is an essential raw material for iron and steel production, in construction agriculture, civil engineering, environmental protection, manifold chemical manufacturing processes. To address the problem of unavoidable process CO 2 emissions associated with production lime, efficient capture technologies need to be developed implemented. The indirectly heated carbonate looping (IHCaL) candidate this application because it utilizes lime as sorbent capture. In work, a retrofit configuration presented analyzed net negative emissions. This done considering different fuels that provide heat required regeneration sorbent. scenarios were simulated AspenPlus® model, key performance indicators calculated, was compared other post-combustion methods. results show high −1805 kg CO2 /t CaO , calculated state-of-the-art coal power plant energy scenario ( η e = 44.2 %; ref,el 770 /MWh el ), can obtained. represents equivalent avoidance more than 230% respect reference without (1368 ). A specific primary consumption avoided SPECCA ) lower 1.5 MJ LHV /kg CO2,av achieved same scenario. Particularly promising accomplished when applying biogenic fraction low emissions, such solid recovered (SRFs) calorific value.