废印刷电路板高温快速热解气体释放及碳结构演化研究。

IF 7.1 2区环境科学与生态学 Q1 ENGINEERING, ENVIRONMENTAL

Waste management Pub Date : 2025-02-01 DOI:10.1016/j.wasman.2024.11.041

Yunfeng Zhu , Bo Li , Yonggang Wei , Shiwei Zhou , Hua Wang

{"title":"废印刷电路板高温快速热解气体释放及碳结构演化研究。","authors":"Yunfeng Zhu , Bo Li , Yonggang Wei , Shiwei Zhou , Hua Wang","doi":"10.1016/j.wasman.2024.11.041","DOIUrl":null,"url":null,"abstract":"<div><div>Pyrometallurgy has proven to be a highly effective method for the large-scale recycling of waste printed circuit boards (WPCB) in industrial settings. This study focused on the fast pyrolysis characteristics of WPCB at smelting temperatures and characterized the gas product release behavior and solid product features in detail. The results indicate that the pyrolysis gas was mainly composed of H<sub>2</sub>, CH<sub>4</sub> and CO, and the maximum yield of pyrolysis gas was obtained at 1300 °C, which was 233.66 mL/g. The retention of copper and tin decreased from 98.61 % and 92.39 % to 87.98 % and 70.66 %, respectively, when the temperature increased from 800 °C to 1300 °C. The structure of the glass fibers in the WPCB remained invariant, whereas the carbon fraction progressively tended to graphitize. The results of Py–GC/MS analysis indicate that high temperatures and extended residence times were more favorable for the formation of small molecules such as alkenes and aromatics and inhibited the production of brominated contaminants.</div></div>","PeriodicalId":23969,"journal":{"name":"Waste management","volume":"193 ","pages":"Pages 84-94"},"PeriodicalIF":7.1000,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Research on high-temperature fast pyrolysis of waste printed circuit boards for gas release and carbon structure evolution\",\"authors\":\"Yunfeng Zhu , Bo Li , Yonggang Wei , Shiwei Zhou , Hua Wang\",\"doi\":\"10.1016/j.wasman.2024.11.041\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>Pyrometallurgy has proven to be a highly effective method for the large-scale recycling of waste printed circuit boards (WPCB) in industrial settings. This study focused on the fast pyrolysis characteristics of WPCB at smelting temperatures and characterized the gas product release behavior and solid product features in detail. The results indicate that the pyrolysis gas was mainly composed of H<sub>2</sub>, CH<sub>4</sub> and CO, and the maximum yield of pyrolysis gas was obtained at 1300 °C, which was 233.66 mL/g. The retention of copper and tin decreased from 98.61 % and 92.39 % to 87.98 % and 70.66 %, respectively, when the temperature increased from 800 °C to 1300 °C. The structure of the glass fibers in the WPCB remained invariant, whereas the carbon fraction progressively tended to graphitize. The results of Py–GC/MS analysis indicate that high temperatures and extended residence times were more favorable for the formation of small molecules such as alkenes and aromatics and inhibited the production of brominated contaminants.</div></div>\",\"PeriodicalId\":23969,\"journal\":{\"name\":\"Waste management\",\"volume\":\"193 \",\"pages\":\"Pages 84-94\"},\"PeriodicalIF\":7.1000,\"publicationDate\":\"2025-02-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Waste management\",\"FirstCategoryId\":\"93\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0956053X24006159\",\"RegionNum\":2,\"RegionCategory\":\"环境科学与生态学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"ENGINEERING, ENVIRONMENTAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Waste management","FirstCategoryId":"93","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0956053X24006159","RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENGINEERING, ENVIRONMENTAL","Score":null,"Total":0}

引用次数: 0

摘要

火法冶金已被证明是工业环境中大规模回收废弃印刷电路板（WPCB）的一种高效方法。本研究重点研究了WPCB在冶炼温度下的快速热解特性，详细表征了其气态产物释放行为和固体产物特征。结果表明：热解气主要由H2、CH4和CO组成，热解气产率在1300℃时达到最大，为233.66 mL/g；当温度从800℃升高到1300℃时，铜和锡的保留率分别从98.61%和92.39%降低到87.98%和70.66%。WPCB中玻璃纤维的结构保持不变，而碳组分逐渐趋于石墨化。Py-GC/MS分析结果表明，高温和延长停留时间更有利于烯烃和芳烃等小分子的形成，抑制了溴化污染物的产生。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

查看原文本刊更多论文

Research on high-temperature fast pyrolysis of waste printed circuit boards for gas release and carbon structure evolution

Pyrometallurgy has proven to be a highly effective method for the large-scale recycling of waste printed circuit boards (WPCB) in industrial settings. This study focused on the fast pyrolysis characteristics of WPCB at smelting temperatures and characterized the gas product release behavior and solid product features in detail. The results indicate that the pyrolysis gas was mainly composed of H₂, CH₄ and CO, and the maximum yield of pyrolysis gas was obtained at 1300 °C, which was 233.66 mL/g. The retention of copper and tin decreased from 98.61 % and 92.39 % to 87.98 % and 70.66 %, respectively, when the temperature increased from 800 °C to 1300 °C. The structure of the glass fibers in the WPCB remained invariant, whereas the carbon fraction progressively tended to graphitize. The results of Py–GC/MS analysis indicate that high temperatures and extended residence times were more favorable for the formation of small molecules such as alkenes and aromatics and inhibited the production of brominated contaminants.

求助全文

通过发布文献求助，成功后即可免费获取论文全文。去求助

来源期刊

Waste management 环境科学-工程：环境

CiteScore

15.60

自引率

6.20%

发文量

492

审稿时长

39 days

期刊介绍： Waste Management is devoted to the presentation and discussion of information on solid wastes,it covers the entire lifecycle of solid. wastes. Scope: Addresses solid wastes in both industrialized and economically developing countries Covers various types of solid wastes, including: Municipal (e.g., residential, institutional, commercial, light industrial) Agricultural Special (e.g., C and D, healthcare, household hazardous wastes, sewage sludge)