文摘
Each coal-fired boiler is designed to burn a particular variety of coal. Deviations from the targeted coal characteristics result in productivity losses. During the phase 1 of the ARP, most boilers switched to lower sulfur coal, others bought allowances, and a few adopted scrubbers. On average, productivity and output dropped between 1%–2.5%, and 1%–6%, respectively. The negative impact on productivity due to scrubbing was larger than that due to fuel switching.