聚氯乙烯松木粉低温共热解脱氯提质特性
摘要：摘要掌握聚氯乙烯（PVC）和木质纤维素类生物质共热解过程中脱氯提质特性,对开发生活垃圾脱氯预处理技术和实现其无害化具有重要意义。研究了PVC与松木粉（WP）在低温（200 ~ 450℃）共热解过程的提质和Cl的迁移转化特性。结果表明,在热解温度为300 ~ 350℃时,PVC和WP混合物的脱氯效率可以达到98%以上,对应的能量回收率约为76%。在300℃热解温度下停留15 min,超过90%的Cl以HCl形式释放,且HCl释放量随着热解温度升高和停留时间的延长而增加。热解焦油中氯的含量很低,仅为1.80% ~ 3.04%。低温共热解过程中,WP中木质素产生的酚羟基可以促进氯的取代反应,提高脱氯效率。
Abstract:：Understanding the de-chlorination and upgrading characteristics during co-pyrolysis of polyvinyl chloride (PVC) and lignocellulosic biomass is of great significance for developing de-chlorination pretreatment technology for municipal solid waste and achieving its harmless treatment. In this paper, the upgrading and migration transformation characteristics of Cl during the low-temperature co-pyrolysis of PVC and pine wood powder (WP) were studied. The migration and transformation characteristics of Cl during the low-temperature co-pyrolysis of PVC and WP were investigated. The results showed that the de-chlorination efficiency of PVC and WP mixture reached over 98% at a pyrolysis temperature of 300-350°C, corresponding to an energy recovery rate of about 76%. At a pyrolysis temperature of 300°C and a residence time of 15 minutes, over 90% of Cl was released in the form of HCl, and the release of HCl increased with increasing pyrolysis temperature and residence time. The chlorine content in the pyrolysis tar was very low, ranging from 1.80% to 3.04%. During low-temperature co-pyrolysis, the phenolic-OH generated by lignin in WP can enhance the substitution reaction of chlorine and improve the de-chlorination efficiency.
中文标题：聚氯乙烯松木粉低温共热解脱氯提质特性
英文标题：Characteristics of Quality Enhancement and De-Chlorination via Low-Temperature Co-Pyrolysis of PVC and Wood Powder
发表时间：2023-03-15
作者：
姚佳桂, 刘华财, 黄艳琴, 武修一, 崔杰, 阴秀丽, 吴创之
作者简介：
姚佳桂（1997-）,男,硕士研究生,主要从事生物质燃料的制备与转化研究。刘华财（1984-）,男,博士,副研究员,主要从事生物质热化学转化利用研究。黄艳琴（1982-）,女,博士,教授,硕士生导师,主要从事生物质热化学转化利用研究。
关键词：PVC,松木粉,低温共热解,脱氯,
Key words：PVC,wood powder,low temperature co-pyrolysis,de-chlorination,
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