TY  - SER
AU  - Ha Cho,Eung
AU  - Chateker,Poornima
AU  - Garlapalli,Ravinder
TI  - Mercury removal from coal by leaching with SO2
PY  - 2009///
CY  - 
PB  - 
N2  - Transcripción del resúmen publicado por el autor: This paper is about the pretreatment of coal to remove mercury content prior to coal combustion. The minute amount of mercury in Pittsburgh No. 8 coal (0.177 ppm) was removed by flowing a gas stream containing 10% oxygen and 1000 ppm SO2 into a coal-water slurry at 30 mL/s. A total of 50 g of 35-65 mesh coal was leached each time in 500 mL of solution. The temperature was varied from 50 to 80 °C, and the initial solution pH varied at 5.7, 1.8, and 1.5. It was found that the mercury removal increased from 44.2% at 50 °C to 88.6% at 75 °C at the natural pH (5.7) and after 3 h of reaction time. The pyrite conversions were much lower than those of mercury. Both the mercury and pyrite removals increased as the pH decreased at 71 °C. Mercury removal was high enough to consider the application of this technology to a commercial process
ER  -