期刊
POWDER TECHNOLOGY
卷 198, 期 3, 页码 422-428出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.powtec.2009.12.011
关键词
Printed circuit boards plastic (PCBP) particles; Kinetic equation; Pyrolysis; Liquid products; Fourier transform infared spectroscopy (FTIR)
资金
- National Natural Science Foundation of China [20676064, 20876079]
- Taishan Scholar Construction Foundation of Shandong Province [JS200510036]
- Program for New Century Excel lent Talents in University [NCET-07-0473]
- Shandong Natural Science Fund for Distinguished Young Scholars [JQ200904]
Pyrolysis behavior and corresponding pyrolysis products of printed circuit board plastic particles (PCBP particles) were investigated in a fluidized bed using TG-FTIR analysis system. PCBP particles were separated from crashed printed circuit boards using fluidized beds, 354 pm crashed plastic particles were pyrolyzed at the temperature ranging from 20 to 900 degrees C by a thermogravimetric analyzer. Two stages of decomposition were identified for PCBP particles under nitrogen conditions. The activation energy was 90.49 kJ/mol for the first-stage reaction and 137.80 kJ/mol for the second-stage reaction. Further, gas products, liquid products, and solid residues yielded in the fluidized bed were analyzed using an elemental analyzer and FTIR. It has been found that the liquid yields increased with an increase in pyrolysis temperature, and with an increase in superficial gas velocity. The main compositions of liquid products were aromatic compounds including substituted benzenes. Whereas, the solid products mainly contained char and fiberglass. (C) 2009 Elsevier B.V. All rights reserved.
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