Reforming of CO2-Containing Natural Gas Using an AC Gliding Arc System: Effect of Gas Components in Natural Gas
Reforming of CO2-Containing Natural Gas Using an AC Gliding Arc System: Effect of Gas Components in Natural Gas
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DOI：
10.1007/s11090-007-9082-2
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发表时间：
2007-06
影响因子：
3.6
通讯作者：
N. Rueangjitt;C. Akarawitoo;T. Sreethawong;S. Chavadej
中科院分区：
文献类型：
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作者：
N. Rueangjitt;C. Akarawitoo;T. Sreethawong;S. Chavadej
本工作的目的是研究模拟天然气的低温等离子体重整过程，重点是氢气和高碳烃的生产。在常温下的交流滑动弧形反应器中进行了模拟天然气的重整反应。模拟天然气的原料组成为CH4：C2H6：C3H8：CO2摩尔比为70：5：5：20。为了考察天然气中存在的所有气态烃和CO2的影响，等离子体反应器采用不同的原料组成：纯CH4、CH4/He、CH4/C2H6/He、CH4/C2H6/C3H8/He和CH4/C2H6/C3H8/CO2。结果表明，进料中气体组分的加入对反应性能和等离子体稳定性有较大影响。在所有所研究的原料体系之间的比较中发现，氢气和C2烃的产率都取决于原料气的组成，顺序如下：CH4/C2H6/C3H8/CO2>；CH4/C2H6/C3H8/He>；CH4/C2H6/He&Gt；CH4/He&Gt；CH4。在CH4/C2H6/C3H8/CO2进料体系中，氢气和C2产物的最大产率分别约为35%和42%。在制氢能耗方面，CH_4/C_2H_6/C_3H_8/CO_2混合气的进料系统所需的输入能量最低，为3.58×10-10−18-4.14×10-−18W(22.35-25.82 EV)。
The objective of the present work was to study the reforming of simulated natural gas via the nonthermal plasma process with the focus on the production of hydrogen and higher hydrocarbons. The reforming of simulated natural gas was conducted in an alternating current (AC) gliding arc reactor under ambient conditions. The feed composition of the simulated natural gas contained a CH4:C2H6:C3H8:CO2molar ratio of 70:5:5:20. To investigate the effects of all gaseous hydrocarbons and CO2present in the natural gas, the plasma reactor was operated with different feed compositions: pure CH4, CH4/He, CH4/C2H6/He, CH4/C2H6/C3H8/He and CH4/C2H6/C3H8/CO2. The results showed that the addition of gas components to the feed strongly influenced the reaction performance and the plasma stability. In comparisons among all the studied feed systems, both hydrogen and C2hydrocarbon yields were found to depend on the feed gas composition in the following order: CH4/C2H6/C3H8/CO2> CH4/C2H6/C3H8/He > CH4/C2H6/He > CH4/He > CH4. The maximum yields of hydrogen and C2products of approximately 35% and 42%, respectively, were achieved in the CH4/C2H6/C3H8/CO2feed system. In terms of energy consumption for producing hydrogen, the feed system of the CH4/C2H6/C3H8/CO2mixture required the lowest input energy, in the range of 3.58 × 10−18–4.14 × 10−18W s (22.35–25.82 eV) per molecule of produced hydrogen.