Abstract
A technical evaluation of CO 2 capture technologies when retrofitted to a cement plant is performed. The investigated technologies are the oxyfuel process, the chilled ammonia process, membrane-assisted CO 2 liquefaction, and the calcium looping process with tail-end and integrated configurations. For comparison, absorption with monoethanolamine (MEA) is used as reference technology. The focus of the evaluation is on emission abatement, energy performance, and retrofitability. All the investigated technologies perform better than the reference both in terms of emission abatement and energy consumption. The equivalent CO 2 avoided are 73–90%, while it is 64% for MEA, considering the average EU-28 electricity mix. The specific primary energy consumption for CO 2 avoided is 1.63–4.07 MJ/kg CO 2 , compared to 7.08 MJ/kg CO 2 for MEA. The calcium looping technologies have the highest emission abatement potential, while the oxyfuel process has the best energy performance. When it comes to retrofitability, the post-combustion technologies show significant advantages compared to the oxyfuel and to the integrated calcium looping technologies. Furthermore, the performance of the individual technologies shows strong dependencies on site-specific and plant-specific factors. Therefore, rather than identifying one single best technology, it is emphasized that CO 2 capture in the cement industry should be performed with a portfolio of capture technologies, where the preferred choice for each specific plant depends on local factors.
| Original language | English |
|---|---|
| Article number | 559 |
| Journal | Energies |
| Volume | 12 |
| Issue number | 3 |
| DOIs | |
| Publication status | Published - 2019 |
Funding
This project has received funding from the European Union’s Horizon 2020 Research and Innovation Programme under grant agreement no. 641185, and the Swiss State Secretariat for Education, Research and Innovation (SERI) under contract number 15.0160.
UN SDGs
This output contributes to the following UN Sustainable Development Goals (SDGs)
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SDG 7 Affordable and Clean Energy
Keywords
- Calcium looping
- Cement production with CO capture
- Chilled ammonia
- CO capture
- CO capture in industry
- CO capture retrofitability
- Membrane-assisted CO liquefaction
- Oxyfuel
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