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- W2390410285 abstract "This paper is aimed at its authors' findings on their study on the pyrolysis features and the kinetic analysis of the printed circuit board(PCB) wastes.The experimental study has been done in a thermo-gravimetric analyzer(TG) and in a laboratory scale tubular furnace reactor,respectively.Kinetics analysis of PCB wastes were investigated under various heating rates(10 K/min,15 K/min,20 K/min,40 K/min) in the nitrogen atmosphere by means of thermo-balance.The results of our study indicate that the pyrolysis process of the PCB wastes is strongly influenced by the heating rates,for all the following temperatures,including the initial reaction temperature(Ts),the DTG peak temperature(Tmax)(where the weight loss rate reaches the maximum value),as well as the final reaction temperature(Te),tend to increase with the increase of the heating rate.On the other hand,the application of the Arrhenius-type kinetic model helps to determine the activating energy(E) and the pre-exponential factor constant(A) for each heating rate.The activation energy and pre-exponential factor constant of the samples have also been found to increase with the increase of the heating rates.That is to say,the E values tend to increase from 110 to 180 kJ/mol while the A values would increase from 2.0×107 to 1.2×1013 min-1.Besides,a set of experiments performed in the above said furnace reactor has also been designed to evaluate the influence of the final pyrolysis temperature(FPT)(400 ℃,500 ℃,600 ℃,700 ℃,or 800 ℃) on the yields and the gas concentrations under the constant heating rate of 20 K/min.It can thus be concluded that when the FPT is above 600 ℃,the char yields would reach approximately the constant value,in which case the rise of FPT seems to lead to the change of the ratio of the oil and gas.According to the result of gas chromatography,the gas products mainly consisted of H2,CO,CO2 CH4,C2H4,C2H6,C3H6 and C3H8.Heating values of both gases and oils prove to be within the range of 11.24-15.21 MJ/m3 and 24.5-27.5 MJ/kg,respectively.The solid pyrolysis residues prove to be friable with its glass fiber and metallic fractions separated easily." @default.
- W2390410285 created "2016-06-24" @default.
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- W2390410285 date "2008-01-01" @default.
- W2390410285 modified "2023-09-26" @default.
- W2390410285 title "Study on the pyrolysis features and the kinetic analysis of the printed circuit board wastes" @default.
- W2390410285 hasPublicationYear "2008" @default.
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