Forming and Scavenging orming Scavenging of Hydrogen Bromide During Pyrolysis of Waste Printed Circuit Boards

Journal of South China University of Technology (Natural Science Edition) ›› 2006, Vol. 34 ›› Issue (10): 15-19,24.

• Chemistry,Chemical & Energy Engineering • Previous Articles Next Articles

Forming and Scavenging orming Scavenging of Hydrogen Bromide During Pyrolysis of Waste Printed Circuit Boards

Peng Shao-hong Chert Lie-qiang Cai Ming-zhao

School of Chemical and Energy Engineering,South China Univ.of Tech.,Guangzhou 510640,Guangdong,China

Received:2005-11-02 Online:2006-10-25 Published:2006-10-25
Contact: 彭绍洪(1969-)，男，博士生，主要从事电子废物的综合利用研究 E-mail:yc-1970@tom.com
About author:彭绍洪(1969-)，男，博士生，主要从事电子废物的综合利用研究
Supported by:
广东省科技计划项目(2003e32104)

Abstract

Abstract:

The characteristics of HBr form ing and scavenging during the pyrolysis of waste printed circuit boards were investigated using the TG-FTrIR and a qua~z-pipe pyrolysis system.The results indicate that(1)HBr is main. ly released at the fast weight-losing stage(300 to 360℃)of printed circuit boards,accompanying with the main chain scissions of epoxy and brominated epoxy backbones;(2)HBr can be eficiently scavenged by adding calcium
carbonate,which has no negative effect on the degradation behavior of printed circuit boards;and(3)the harm of HBr can be completely eliminated by selecting the amount and diameter of the added ca1cium carb0nate as well as by controlling the heating rate and the pyrolysis temperatur

Key words: waste printed circuit board, pyrolysis, calcium carbonate, hydrogen bromide

Peng Shao-hong Chert Lie-qiang Cai Ming-zhao. Forming and Scavenging orming Scavenging of Hydrogen Bromide During Pyrolysis of Waste Printed Circuit Boards[J]. Journal of South China University of Technology (Natural Science Edition), 2006, 34(10): 15-19,24.

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Forming and Scavenging orming Scavenging of Hydrogen Bromide During Pyrolysis of Waste Printed Circuit Boards

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