Science last ten years, waste plastic generated from MSW(Municipal Solid Waste) has been increased in Korea. Landfilling, incineration and recycle are main methods for treatment for waste plastic. During incinerating of waste plastic or RPF(Refused Plastics Fuel), the emission of chlorine gas comes ...
Science last ten years, waste plastic generated from MSW(Municipal Solid Waste) has been increased in Korea. Landfilling, incineration and recycle are main methods for treatment for waste plastic. During incinerating of waste plastic or RPF(Refused Plastics Fuel), the emission of chlorine gas comes from burning or pyrolyzing PVC included in RPF. Chlorine gas has effects of corrosion of equipment and deterioration in product quality. In order to prevent these problems effectively, it is essential to separate or screening of waste Plastic. In this study, thermogravimetric and kinetic analysis has been investigated to define the characteristics in the process of pyrolysis of RPF with sawdust and rice bran as additives. In addition, PVC was isolated from waste plastic before manufacturing RPF, and characteristics of manufactured RPF as solid fuel including properties, calorific value, pyrolysis and chlorine content was analyzed. Based on the result of TGA(Thermogravimetric analysis), kinetics characteristics was analyzed by using Kissinger method and Ozawa method which are the most common method for obtaining activation energy, and experimental conditions of TGA was set as follows: in a nitrogen atmosphere, gas flow rate of 20㎖/min, heating rate of 5~50℃/min, and maximum hottest temperature of 800℃. Applying of Kissinger method, activation energy was obtained from slope which is calculated from relation of ln() and 1/Tm. The kinetic parameters obtained from Kissinger method were 61.68kJ/mol of RPF, 44.43kJ/mol of rice bran, 50.13kJ/mol of saw dust and 36.37kJ/mol of mixture of RPF and rice bran. Applying of Ozawa method, activation energy was also obtained from slope which is calculated from relation of and 1/T. As a result of kinetic analysis by Ozawa method, activation energy were 29.37~54.80kJ/mol of RPF, 31.41~37.26kJ/mol of rice bran, 46.75~48.61kJ/mol of saw dust and 33.06~36.10kJ/mol of mixture of RPF and rice bran. In conclusion, activation energy showed a tendency to gradually increase by a rise of reaction rate. Although activation energy with pyrolysis of RPF was irregularly scattered, it showed that activation energy was stabilized by co-pyrolysis of RPF and additives(rice bran and saw dust).
Science last ten years, waste plastic generated from MSW(Municipal Solid Waste) has been increased in Korea. Landfilling, incineration and recycle are main methods for treatment for waste plastic. During incinerating of waste plastic or RPF(Refused Plastics Fuel), the emission of chlorine gas comes from burning or pyrolyzing PVC included in RPF. Chlorine gas has effects of corrosion of equipment and deterioration in product quality. In order to prevent these problems effectively, it is essential to separate or screening of waste Plastic. In this study, thermogravimetric and kinetic analysis has been investigated to define the characteristics in the process of pyrolysis of RPF with sawdust and rice bran as additives. In addition, PVC was isolated from waste plastic before manufacturing RPF, and characteristics of manufactured RPF as solid fuel including properties, calorific value, pyrolysis and chlorine content was analyzed. Based on the result of TGA(Thermogravimetric analysis), kinetics characteristics was analyzed by using Kissinger method and Ozawa method which are the most common method for obtaining activation energy, and experimental conditions of TGA was set as follows: in a nitrogen atmosphere, gas flow rate of 20㎖/min, heating rate of 5~50℃/min, and maximum hottest temperature of 800℃. Applying of Kissinger method, activation energy was obtained from slope which is calculated from relation of ln() and 1/Tm. The kinetic parameters obtained from Kissinger method were 61.68kJ/mol of RPF, 44.43kJ/mol of rice bran, 50.13kJ/mol of saw dust and 36.37kJ/mol of mixture of RPF and rice bran. Applying of Ozawa method, activation energy was also obtained from slope which is calculated from relation of and 1/T. As a result of kinetic analysis by Ozawa method, activation energy were 29.37~54.80kJ/mol of RPF, 31.41~37.26kJ/mol of rice bran, 46.75~48.61kJ/mol of saw dust and 33.06~36.10kJ/mol of mixture of RPF and rice bran. In conclusion, activation energy showed a tendency to gradually increase by a rise of reaction rate. Although activation energy with pyrolysis of RPF was irregularly scattered, it showed that activation energy was stabilized by co-pyrolysis of RPF and additives(rice bran and saw dust).
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