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有色金属工程:2021,(10):-
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废旧电视电路板的热解研究
(1.昆明理工大学冶金与能源工程学院;2.楚雄滇中有色金属有限责任公司)
Study on pyrolysis of waste TV circuit board
xia hongying1, li jiangping2, chen xitang2, shu bo2, yu bin2, wang enzhi2, zeng kangqing3
(1.School of metallurgy and energy engineering, Kunming University of science and technology;2.Chuxiong Dianzhong Nonferrous Metals Co., Ltd. g;3.School of Metallurgy and Energy Engineering, China, Kunming University of Science and Technology)
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投稿时间:2021-03-30    修订日期:2021-04-11
中文摘要: 论文研究了脱锡后废旧电视印刷电路板的热解,探索了温度(400、500、600和700℃)对热解固、液、气产物的产率以及产物成分的影响,并采用XRD、SEM、GC、GC/MS等检测手段对热解产物进行了分析表征。研究表明,随着温度上升,气体产率随着温度的上升而有所增加,在700℃时达到最大值13.45%,液体产率在600℃时达最大值17.4%,固体产率随温度上升而减少,最后趋于稳定。Cu、Sn和Ag等金属在固体产物中得到富集,随热解温度升高而波动,600℃时Cu含量达23.46%,可为铜冶炼的原料;气体产物的主要成分为H2,热解温度为600℃时气体产物中的H2含量最大,达到56.9%,热值达到21.23MJ/Nm3,是优良的富氢燃气;液体产物主要产物是苯酚、4-异丙基苯酚等,产物热值较高。废旧电视印刷电路板热解可实现热解固、液、气产物的综合高效利用。
Abstract:The paper studied the conventional pyrolysis of waste TV printed circuit boards, and explored the influence of temperature (400, 500, 600 and 700℃) on the product yield and product composition of conventional pyrolysis of waste TV circuit boards. XRD, SEM, The pyrolysis products were analyzed and characterized by GC, GC/MS and other detection methods. The experimental results show that the gas yield increases with the rise in temperature. The temperature reaches the maximum value of 13.45% at 700°C, but the overall change is not significant. The liquid yield is the largest at 600°C, which is 17.4 %, the solid yield decreases as the temperature rises, and finally stabilizes. The main components of the gas product are H2 and CO2. When the pyrolysis temperature is 600℃, the H2 content in the gas product is the largest, and the CO2 content is less. The obtained gas product has the highest comprehensive calorific value, and the dioxin content is higher than the national standard. Only after exhaust gas treatment can be discharged; the main products in the liquid product are phenol and 4-isopropylphenol, and the product has a low calorific value; Cu, Sn and Ag are enriched in the solid product, but the content does not change with temperature Big. Therefore, the optimal temperature for conventional pyrolysis of waste TV printed circuit boards is 600°C, and the obtained product has the highest economic value.
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基金项目:国家自然科学基金项目(面上项目,重点项目,重大项目)
引用文本:
夏洪应,李江平,陈习堂,舒波,余彬,王恩志,曾抗庆.废旧电视电路板的热解研究[J].有色金属工程,2021,(10):.

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