Combined Reforming and Partial Oxidation of CO2-Containing Natural Gas Using an AC Multistage Gliding Arc Discharge System: Effect of Stage Number of Plasma Reactors
Combined Reforming and Partial Oxidation of CO2-Containing Natural Gas Using an AC Multistage Gliding Arc Discharge System: Effect of Stage Number of Plasma Reactors
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DOI：
10.1007/s11090-009-9191-1
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发表时间：
2009-09
影响因子：
3.6
通讯作者：
N. Rueangjitt;Wariya Jittiang;Krittiya Pornmai;J. Chamnanmanoontham;T. Sreethawong;S. Chavadej
中科院分区：
文献类型：
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作者：
N. Rueangjitt;Wariya Jittiang;Krittiya Pornmai;J. Chamnanmanoontham;T. Sreethawong;S. Chavadej
以CH 4：C2 H6：C3 H8：CO2摩尔比为70：5：5：20的模拟含CO2天然气为原料，研究了多级交流滑动弧放电反应器级数对重整-部分氧化联合工艺性能的影响。对于部分氧化的实验，使用纯氧或空气作为氧源，烃与氧的固定摩尔比为2/1。在没有部分氧化的情况下，在恒定的进料流速下，除CO2外，所有烃类的转化率随着级数从1增加到3而大大增加;但超过3级，反应物转化率几乎保持不变。然而，对于恒定的停留时间，只有C3 H8转化率逐渐增加，而其他反应物的转化率几乎保持不变。发现氧气的加入显著提高了天然气重整的工艺性能。利用空气作为氧源在反应物转化率和所需产物选择性方面显示出比纯氧优越的上级工艺性能。以空气为氧源，采用三级等离子体反应器，在4.38 s的恒定停留时间下，反应的最佳能量消耗为12.05 × 1024 eV/mol反应物，最佳能量消耗为9.65 × 1024 eV/mol氢气。
The effect of stage number of multistage AC gliding arc discharge reactors on the process performance of the combined reforming and partial oxidation of simulated CO2-containing natural gas having a CH4:C2H6:C3H8:CO2molar ratio of 70:5:5:20 was investigated. For the experiments with partial oxidation, either pure oxygen or air was used as the oxygen source with a fixed hydrocarbon-to-oxygen molar ratio of 2/1. Without partial oxidation at a constant feed flow rate, all conversions of hydrocarbons, except CO2, greatly increased with increasing number of stages from 1 to 3; but beyond 3 stages, the reactant conversions remained almost unchanged. However, for a constant residence time, only C3H8conversion gradually increased, whereas the conversions of the other reactants remained almost unchanged. The addition of oxygen was found to significantly enhance the process performance of natural gas reforming. The utilization of air as an oxygen source showed a superior process performance to pure oxygen in terms of reactant conversion and desired product selectivity. The optimum energy consumption of 12.05 × 1024eV per mole of reactants converted and 9.65 × 1024eV per mole of hydrogen produced was obtained using air as an oxygen source and 3 stages of plasma reactors at a constant residence time of 4.38 s.