| 초록 |
Paper sludge ash is produced from paper sludge combustors. In the paper mill sludge, the large amounts of the coating filler, limestone (CaCO3) were added in the pulp tank during the paper manufacturing process. Therefore, CaO content in paper sludge is commonly up to around 30%. The major objectives of the present study are to determine the kinetics of desulfurization of paper sludge ash in a thermobalance reactor (0.055 m i.d. × 1.0 m high). The effects of sulfation temperature (750°C - 900°C) and partial pressure of SO3 (3000ppm - 10000ppm) on sulfation reaction rate have been determined in a thermobalance reactor. From the Arrhenius plot, the activation energy and the pre-exponential factor are determined based on the volumetric reaction and shirinking core model. The activation energy and pre-exponential factor are found to be 51.80 kJ/mol and 5.91 l/min, respectively. |
