非平衡プラズマと化学反応プロセスを併用したディーゼルエンジン排気ガス中の NOx の除去(熱工学, 内燃機関, 動力など)

非平衡プラズマと化学反応プロセスを併用したディーゼルエンジン排気ガス中の NOx の除去(熱工学, 内燃機関, 動力など)
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利用非平衡等离子体和化学反应过程(热工、内燃机、电力等)去除柴油机废气中的NOx

DOI:
10.1299/kikaib.67.2891
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发表时间:
2001
期刊:
Transactions of the Japan Society of Mechanical Engineers. B
影响因子:
--
通讯作者:
浩一 北浦
浩一 北浦
中科院分区:
--
文献类型:
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作者:
俊昭 山本;雅章 大久保;高幸 宮下;浩一 北浦

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在以前的研究中,我们提出了一种两级等离子体-化学工艺来控制发电厂和工厂排放的NOx气体。该工艺包括以低功率和低副产物将NO氧化为NO2的等离子体工艺和使用Na2SO3将NO2还原为N_2的化学工艺。采用该混合方法对模拟废气NOx的脱除效率接近100%。在本研究中,首次将该方法应用于柴油机的实际废气,并考察了其脱除NOx的特性。结果表明,在柴油机负荷为50%的情况下,等离子体反应器可以将近100%的NO氧化为NO2。NO的氧化程度随着气体温度和湿度的升高而降低。采用等离子体-化学复合法,在比能量密度下脱除NOx的效率可达87%。140J/L。
In the previous studies, we proposed a two stage plasma-chemical process for control of NOx gas emitted from electric power plants and factories. This process consists of a plasma process to oxidize NO to NO2 with low electric power and low byproducts, and a chemical process to reduce NO2 to N2 using Na2SO3. Almost 100% NOx removal efficiency was achieved for simulated exhaust gas using this hybrid method. In the present study, this method was first applied to a real exhaust gas from a diesel engine and the removal characteristics of NOx were examined. As a result, the plasma reactor could oxidize nearly 100% of NO to NO2 with the 50% load in the diesel engine. The NO oxidation decreased with increase in gas temperature and humidity. Using the plasma-chemical hybrid method, a 87% NOx removal efficiency was obtained with the specific energy density. 140J/L.