Abstract
The concept of Carbonate Looping Cycle (CaL) offers many advantages compared to other CO2 capture technologies within cement plants. The configurations currently discussed in the literature employ oxy-fuel combustion to supply the necessary heat for the calcination process in a single reactor. As a result, the process requires an air separation unit. The indirectly heated calcium looping (IHCaL) offers solutions to overcome the present limitations. Numerous heat pipes connecting a separate combustion unit to a calciner supply thermal energy for the calcination process. This study, based on the best available technology, recommends both full and tail-end IHCaL integrations within a commercial cement plant. Both systems provide over 1.3 million tonnes of cement per annum. The fully integrated option produces 309 GWh of electricity, compared to 875 GWh for the tail-end option. The CO2 avoidance rates for fully integrated and tail-end options are 0.83 and 0.88 t CO2/t Clinker, respectively. The tail-end version has a notably high capital cost, resulting in a high CO2 avoidance cost of €37.6/t CO2. On the other hand, the fully integrated version lowers the CO2 avoidance cost to €29.8/t CO2 because of a lower capital requirement and a smaller gap between the amount of CO2 captured and avoided.
Original language | English |
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Article number | 125349 |
Pages (from-to) | 1-13 |
Number of pages | 13 |
Journal | Applied Thermal Engineering |
Volume | 263 |
Issue number | 125349 |
Early online date | 25 Dec 2024 |
DOIs | |
Publication status | Published online - 25 Dec 2024 |
Bibliographical note
Publisher Copyright:© 2024
Data Access Statement
Data will be made available on request.Keywords
- post-combustion capture
- decarbonising cement plants
- indirectly heated calcination
- heat pipes, calcium looping cycles
- techno-economic analysis
- Techno-economic analysis
- Heat pipes
- Post-combustion capture
- Calcium looping cycles
- Decarbonising cement plants
- Indirectly heated calcination