化工进展2018，Vol.37Issue(3)：1174-1180,7.DOI:10.16085/j.issn.1000-6613.2017-1134
旋转滑动弧降解垃圾气化焦油组分中的萘
Decomposition of naphthalene as tar model compound from the gasification of municipal solid waste by rotating gliding arc plasma
摘要
Abstract
In this study,a novel rotating gliding arc(RGA)plasma co-driven by a magnetic field and a tangential gas flow was used for tar decomposition. Naphthalene in nitrogen flow was proposed as a tar surrogate. The effects of injection concentration,gas flow rate and preheating temperature on naphthalene degradation efficiency and gas production were investigated. In addition,liquid byproducts were characterized by gas chromatography-mass spectrometry(GC/MS). With the rise of the injection concentration,the degradation efficiency of naphthalene increased first,reaching a maximum value of 88.3% at 6mg/L,and then decreased. With the rise of gas flow rate from 2L/min to 12L/min,the degradation efficiency of naphthalene decreased continuously from 92.1% to 82.5%. Increasing the preheating temperature could promote the degradation of naphthalene. The results showed that the main gas products were H2and C2H2,with maximum selectivity of 44.0% and 13.7% respectively. The variation trend of the selectivity of H2and C2H2were consistent with that of naphthalene degradation efficiency. The major liquid byproducts were acetylene,indene and acenaphthylene,whose GC/MS peak areas were 2—3 orders of magnitude lower than that of naphthalene. On this basis,the reaction pathways and mechanisms of naphthalene decomposition in the plasma zone were preliminary proposed and discussed.关键词
旋转滑动弧/等离子体/生活垃圾气化/焦油降解/萘Key words
rotating gliding arc/plasma/municipal solid waste gasification/tar decomposition/naphthalene分类
资源环境引用本文复制引用
颜欣,李晓东,朱凤森,孔相植,严建华..旋转滑动弧降解垃圾气化焦油组分中的萘[J].化工进展,2018,37(3):1174-1180,7.基金项目
国家自然科学基金项目(51576174). （51576174）
