摘要
研究了废旧印刷电视电路板的热解,探索了氮气流速对热解产物产率和成分的影响,并采用SEM、XRF、GC、GC/MS等检测手段对热解产物进行了分析表征。结果表明,液体产率随着氮气流速的增大而减少,气体产率随氮气流速增大呈上升趋势,两者分别在0.3L/min时达到最小值10.85%和最大值14.4%。Cu、Sn和Ag等金属在固体产物中得到富集,随氮气流速增大而波动,可作为铜冶炼的原材料;H2是气体产物中的主要成分,在氮气流速为0.3L/min时含量最大,达到68.21%,H2、CO、CH4的总含量在80.12%~82.39%,是富氢的优良燃气;液体产物主要产物是苯酚、4-异丙基苯酚等,可作为化工原料。废旧印刷电视电路板热解得到的气、液、固产物可实现综合高效利用。
Conventional pyrolysis of waste printed TV circuit boards was studied.Effect of nitrogen flow rate on yield and composition of pyrolysis products were explored,and pyrolysis products were analyzed and characterized by SEM,XRD,GC,GC/MS and other tests means.The results show that liquid yield decreases with increase of nitrogen flow rate and reaching the minimum value of 10.85%at 0.3 L/min;gas yield rises with increase of nitrogen flow rate and reaching the maximum value of 14.4%at 0.3 L/min.Metals such as Cu,Sn and Ag are enriched in solid product,which fluctuate with increase of nitrogen flow rate,and can be used as raw material for copper smelting.H2 is main component in gas product,and the maximum content is 68.21%when nitrogen flow rate is 0.3 L/min;the total content of H2,CO,CH4 is 80.12%—82.39%,which is a good hydrogen-rich gas.Main liquid products are phenol,4-isopropylphenol,etc.,which can be used as chemical raw materials.The gas,liquid and solid products obtained from pyrolysis of waste printed TV circuit boards can be comprehensively and efficiently utilized.
作者
曾抗庆
刘承飞
刘大方
张威
辛椿福
夏洪应
ZENG Kang-qing;LIU Cheng-fei;LIU Da-fang;ZHANG Wei;XIN Chun-fu;XIA Hong-ying(School of Metallurgy and Energy Engineering,Kunming University of Science and Technology,Kunming 650093,China;Chuxiong Dianzhong Nonferrous Metals Co.,Ltd.,Chuxiong 675000,Yunnan,China)
出处
《有色金属（冶炼部分）》
CAS
北大核心
2021年第9期111-116,共6页
Nonferrous Metals（Extractive Metallurgy)
基金
云南省万人计划产业技术领军人才计划资助项目(云发改人事[2019]1096号)
云南省万人计划青年拔尖人才计划资助项目(云人社发[2018]73号)。
关键词
废旧印刷电视电路板
热解
产率
产物成分
氮气流速
waste printed TV circuit boards
pyrolysis
product yield
product composition
nitrogen flow rate
