Performance Analysis of Existing 300MW Coal-Fired Power Plant with Ammonia-Based CO2 Capture

This paper presents the results of ASPEN simulations of a carbon-dioxide (CO₂) removal and recovery plant that captures CO₂ from a 300 MW conventional coal-fired power plant. It also analyzes the techno-economic performance of 300 MW coal-fired power plant with and without ammonia-based CO₂ capture process, based on the operating data of an existing power plant. Simulation and calculations indicate that, adopting the aqueous ammonia process for capturing CO₂ from a condensing power plant, the net power output will drop from 295.13 MW to 225.23 MW, which makes the efficiency fall from 38.15% to 29.12%, with CO₂ avoidance cost being 21.16€/tCO₂, which is still high but obviously better than those of the amine-based system.