废弃印刷线路板热解能耗实验研究  

Experimental Study on Pyrolysis Energy Consumption of Waste Printed Circuit Board

作　　者：郭晓娟[1] 左远志[1] 秦贯丰[1] 杨晓西[1] 

机构地区：[1]东莞理工学院能源与化工系,广东东莞523808

出　　处：《节能技术》2013年第3期205-208,212,共5页Energy Conservation Technology

基　　金：国家自然科学基金资助项目(51176036)

摘　　要：开展了线路板热解能耗实验研究。研究表明:线路板热解能耗包括热解反应热、系统热容、系统散热损失。对于本研究固定床热解实验装置,FR4板的热解反应热总能耗占比24.68%,系统热容20.75%,散热损失54.66%;对于Teflon板,热解反应热总能耗占比14.58%,系统热容39.59%,散热损失45.82%。FR4、Teflon型线路板热解反应热分别为19.692 MJ/kg和11.374 MJ/kg。每公斤FR4线路板产生的热解油热值约为4.50 MJ,热解气热值约为2.39 MJ。对于FR4板来说热解油和热解气作为燃料回收,热量仅为反应热的34.99%,不足以维持热解反应的持续进行。整个热解系统,系统热容和散热损失占比较大,热解工艺设计时,设计合理的加热方式保证线路板受热均匀和自动化监控停炉、起炉加热控制是节能的关键措施之一。同时添加催化剂以实现线路板较低的热解温度,减小平均升温速率也是提高热解技术处理废弃印刷线路板经济性的有效措施。Energy consumption was analyzed experimentally on the treatment of Printed Circuit Board （PCB） by pyrolysis technology. The results showed that： （ 1 ） The energy consumption of PCB pyrolysis consists of pyrolysis reaction heat value, pyrolysis system thermal capacity and system heat loss. Pyrolysis total energy consumption for FR4 contained 24. 68% of pyrolysis reaction heat, 20. 75% of pyrolysis sys- tem thermal capacity, 54. 66% of system heat loss and for Teflon 14. 58% of pyrolysis reaction heat, 39.59% of pyrolysis system thermal capacity, 45.82% of system heat loss in this study. Pyrolysis reac- tion heat was 19. 962 MJ/kg for FR4 PCB and 11. 374 MJ/kg for Teflon PCB respectively. The calorific capacity of pyrolysis gas and tar for FR4, according to calculation and measurement, are 2. 39 MJ/kg （PCB） and 4. 50 MJ/kg （PCB） respectively. The caloric value of pyrolysis gas and tar account for only 34. 99% of required reaction heat value, so additional heat source will be needed. Amounts of energy consumption lies in pyrolysis system thermal capacity and system heat loss. High-efficiency heating de-sign and autocontrol open and close for pyrolysis furnace, adding catalyst to decrease pyrolysis final tem-perature, lower heating rate are effective methods to the economy.

关 键 词：线路板 热解 能耗 反应热 

分 类 号：O621.25[理学—有机化学] X705[理学—化学]