Plasma reforming of toluene as a model tar compound from biomass gasification:effect of CO_(2) and steam

作     者：Shiyun Liu Danhua Mei Yaolin Wang Yichen Ma Xin Tu 

作者机构：Department of Electrical Engineering and ElectronicsUniversity of LiverpoolLiverpool L693GJUK College of Electrical Engineering and Control ScienceNanjing Tech UniversityNanjing 211816China 

出 版 物：《Waste Disposal and Sustainable Energy》 (废弃物处置与可持续能源（英文）)

年 卷 期：2019年第1卷第2期

页      面：133-141页

核心收录：

学科分类：081704[工学-应用化学] 07[理学] 070304[理学-物理化学(含∶化学物理)] 08[工学] 0817[工学-化学工程与技术] 0703[理学-化学] 

基　　金：the UK EPSRC Impact Acceleration Account(IAA)is gratefully acknowledged.This project has received funding from the European Union’s Horizon 2020 research and innovation program under the Marie Skłodowska-Curie Grant agreement No.823745 

主　　题：Gliding arc discharge Non-thermal plasma Tar reforming Biomass gasification 

摘      要：In this study, plasma reforming of toluene as a tar model compound from biomass gasification has been carried out using an AC gliding arc discharge reactor. The influence of steam and CO_(2) addition on the reforming of toluene has been evaluated. The results show that the highest toluene conversion (59.9%) was achieved when adding 3 vol% CO_(2) at a toluene concentra-tion of 16.1 g/Nm3 and a specific energy input of 0.25 kWh/m3. Further increasing CO_(2) concentration to 12 vol% decreased the conversion of toluene. The presence of steam in the plasma CO_(2) reforming of toluene creates oxidative OH radicals which contribute to the enhanced conversion of toluene and energy efficiency of the plasma reforming process through stepwise oxidation of toluene and reaction intermediates. Hydrogen and C_(2)H_(2) were identified as the major gas products in the plasma reforming of toluene without CO_(2) or steam, with a yield of 9.7% and 14.5%, respectively, while syngas was the primary products with a maximum yield of 58.3% (27.5% for H_(2) and 30.8% for CO) in the plasma reforming with the addition of 12 vol% CO_(2). The plausible reaction pathways and mechanism in the plasma reforming of toluene have been proposed through the combination of the analysis of gas and condensed products and spectroscopic diagnostics.