Abstract
This research investigated the application of the direct separation reactor (DSR) to the cement industry to capture a large portion of the process-derived CO2. The case herein assumed a DSR fuelled by natural gas, and downstream rotary kiln with a typical coal- and refuse-derived fuel blend. A range of key performance indicators were assessed with these compared to a baseline plant simulated with identical assumptions. This research found that the DSR has the potential to capture up to 58–68% of CO2, reducing net direct emissions from production to around 0.17–0.21 tCO2/tcmnt. This can be achieved with a minimal penalty to thermal duty (+8%) and modest increase in electrical requirement (+30%). Overall, this work calculated a cost of CO2 capture cost between £39-53/tCO2. Promisingly, these results were achieved without rigorous process optimisation, and there are many avenues to further improve the performance of the DSR.
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