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大气压等离子体射流重整CH4-CO2制合成气
引用本文:李祥,白玫瑰,陶旭梅,尚书勇,印永祥,戴晓雁.大气压等离子体射流重整CH4-CO2制合成气[J].燃料化学学报,2010,38(2):195-200.
作者姓名:李祥  白玫瑰  陶旭梅  尚书勇  印永祥  戴晓雁
作者单位:1.College of Science, Southwest University of Science and Technology, Mianyang 621010, China; ,2.Center of Plasma Application, School of Chemical Engineering, Sichuan University, Chengdu 610065, China
基金项目:国家自然科学基金(10475060); 国家自然科学基金委员会 中国工程物理研究院联合基金(1097602/A06); 四川省教育厅重点项目(09ZA128); 西南科技大学青年基金(08ZX3122)
摘    要:采用大气压等离子体射流,以CH4和CO2直接作为放电气体进行常压下重整制合成气的实验研究,考察了等离子体射流的放电特征及放电距离、放电功率、原料气配比和流量对反应的影响。结果表明,该等离子体具有放电稳定、均匀的特征。重整反应的主要产物为合成气,只有少量的H2O和积炭生成。优化的反应条件为放电距离为9mm,CH4和CO2的摩尔比为4/6。当原料气流量为1000mL/min,放电功率为88.4W时,CH4和CO2的最高转化率为分别为94.99%和87.23%。甲烷和二氧化碳的转化率随放电功率的增加而增加,随流量的增加而减少。

关 键 词:重整  甲烷  二氧化碳  合成气  等离子体射流  
收稿时间:2009-07-10
修稿时间:2009-10-09

Carbon dioxide reforming of methane to synthesis gas by an atmospheric pressure plasma jet
LI Xiang,Bai-Mei-Gui,DAO Xu-Mei,Chang-Shu-Yong,Yin-Yong-Xiang,Dai-Xiao-Yan.Carbon dioxide reforming of methane to synthesis gas by an atmospheric pressure plasma jet[J].Journal of Fuel Chemistry and Technology,2010,38(2):195-200.
Authors:LI Xiang  Bai-Mei-Gui  DAO Xu-Mei  Chang-Shu-Yong  Yin-Yong-Xiang  Dai-Xiao-Yan
Abstract:An experimental investigation on CO2 reforming of CH4 to synthesis gas was performed by a novel atmospheric pressure plasma jet, which is initiated by an alternating current of 50Hz and a high ratio transformer. The plasma jet proved to be a stable and uniform atmospheric pressure discharge that held the advantages of both thermal and non-thermal plasma. The effects of discharge distance, CH4/CO2 mol ratio in the feed, feed flow rate and discharge power on the reforming reaction were investigated. The results showed that the products of the reforming reaction are simple, including H2, CO, a small amount of H2O and carbon powder. The optimal discharge distance between two electrodes is 9mm and the optimal CH4/CO2 mol ratio is 4/6. When the flow rate is 1000mL/min and the discharge power is 88.4W, the conversions of CH4 and CO2 are 94.99% and 87.23%, respectively, which are higher than those via other plasmas. The conversions of CH4 and CO2 increase with increasing the discharge power and decrease with increasing the flow rate. Current process is more advantageous in treatment capacity and conversion ability for carbon dioxide reforming of methane than other plasma systems.
Keywords:reforming  methane  carbon dioxide  synthesis gas  plasma jet  
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