Abstract
This paper focuses on carbon capture in an advanced combined cycle with air-blown gasification of high-sulfur coal. The technology selected for CO2 capture is based on cooled ammonia scrubbing in post-combustion mode, as recently investigated by the authors in another work. Here, a stronger integration among the desulfurization unit, the CO2 capture plant and the steam cycle is considered, in order to improve the ultimate performance. In detail, a specific primary energy consumption for CO2 avoided (SPECCA) as low as 1.97MJ/kgCO2 is calculated in case of 90% of CO2 capture, with an ultimate power plant efficiency of 42.53%.
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