Abstract
According to the findings of the first part of this work, the two impurities in the CO2 stream, from post-combustion capture, which require deep removal are oxygen and water, down to 10 and 50 ppmv, respectively. In addition, a review and preliminary evaluation of the possible technologies which can be used for oxygen and water deep removal was conducted, and the results showed that the promising technologies are: catalytic oxidation of hydrogen and refrigeration and condensation, respectively. In this paper, detailed process modeling, design and a techno-economic evaluation are performed on these two technologies. Both selected technologies were designed and proved their potential by achieving the required levels of impurities with a total cost of treating and compressing one ton of CO2 of $13.09 for the coal-fired power plant full purification case and $17.23 for the NGCC full purification process. The cost of CO2 compression without the purification step was found to be approximately $10.12 per ton of CO 2 for the coal-fired case. This means that adding the purification technologies to the coal fired case will increase the cost of CO2 compression by around 29.3%. Assuming a total CO2 capture and compression cost of $73-94 per ton of CO2 shows that the total CO2 purification cost is roughly 3-4% of the overall capture cost.
Original language | British English |
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Pages (from-to) | 2462-2469 |
Number of pages | 8 |
Journal | Energy Procedia |
Volume | 37 |
DOIs | |
State | Published - 2013 |
Event | 11th International Conference on Greenhouse Gas Control Technologies, GHGT 2012 - Kyoto, Japan Duration: 18 Nov 2012 → 22 Nov 2012 |
Keywords
- Design
- Economic evaluation
- Purification