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Waste Disposal & Sustainable Energy
Waste Disposal & Sustainable Energy  2019, Vol. 1 Issue (2): 133-141    DOI: 10.1007/s42768-019-00011-1
    
生物质气化焦油模型化合物甲苯的等离子体重整：CO2和水蒸气的影响
Shiyun Liu1,2, Danhua Mei1,2, Yaolin Wang1, Yichen Ma1, Xin Tu1
1.Department of Electrical Engineering and Electronics, University of Liverpool, Liverpool, UK  2.College of Electrical Engineering and Control Science, Nanjing Tech University, Nanjing, China
Plasma reforming of toluene as a model tar compound from biomass gasification: effect of CO2 and steam
Shiyun Liu<sup>1,2</sup>, Danhua Mei<sup>1,2</sup>, Yaolin Wang<sup>1</sup>, Yichen Ma<sup>1</sup>, Xin Tu<sup>1</sup>
1.Department of Electrical Engineering and Electronics, University of Liverpool, Liverpool, UK  2.College of Electrical Engineering and Control Science, Nanjing Tech University, Nanjing, China
 全文: PDF 
摘要： 本文采用交流滑动弧放电反应器对生物质气化焦油模型化合物甲苯进行等离子体重整研究，考察了蒸汽和CO2的加入对甲苯重整反应的影响。结果表明，在甲苯浓度为16.1g/Nm3、比能量输入为0.25kWh/m3的条件下，加入3vol%的CO2时，甲苯转化率最高（59.9%）。进一步将CO2的浓度提高至12vol%。甲苯等离子体CO2重整过程中，蒸汽的存在产生了氧化OH自由基，这有助于通过甲苯和反应中间体的逐步氧化来提高甲苯转化率和等离子体重整过程的能量效率。在无CO2或蒸汽的条件下，甲苯等离子体重整过程中，氢气和C2H2是主要气体产物，产率分别为9.7%和14.5%。而在加入12 vol % CO2的等离子体重整中，合成气是主要产物，最大产率为58.3%（H2为27.5%，CO为30.8%）。通过气体和冷凝产物的分析，结合光谱诊断，提出了甲苯等离子体重整中可能的反应途径和机理。
关键词： 滑动弧放电;  非热等离子体;  焦油重整;  生物质气化    
Abstract: 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 CO2 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% CO2 at a toluene concentration of 16.1 g/Nm3 and a specific energy input of 0.25 kWh/m3. Further increasing CO2 concentration to 12 vol% decreased the conversion of toluene. The presence of steam in the plasma CO2 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 C2H2 were identified as the major gas products in the plasma reforming of toluene without CO2 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 H2 and 30.8% for CO) in the plasma reforming with the addition of 12 vol% CO2. 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.
Key words: Gliding arc discharge    Non-thermal plasma    Tar reforming    Biomass gasification
收稿日期: 2019-06-13 出版日期: 2019-11-01
通讯作者: Xin Tu     E-mail: xin.tu@liv.ac.uk
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引用本文:

Shiyun Liu, Danhua Mei, Yaolin Wang, Yichen Ma, Xin Tu. Plasma reforming of toluene as a model tar compound from biomass gasification: effect of CO2 and steam. Waste Disposal & Sustainable Energy, 2019, 1(2): 133-141.

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http://www.zjujournals.com/wdse/CN/10.1007/s42768-019-00011-1    或    http://www.zjujournals.com/wdse/CN/Y2019/V1/I2/133

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