Low Temperature Plasma Assisted Catalytic Reduction of NOx in Simulated Marine Diesel Exhaust
Low Temperature Plasma Assisted Catalytic Reduction of NOx in Simulated Marine Diesel Exhaust
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DOI：
10.1007/s11090-007-9091-1
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发表时间：
2008-02
影响因子：
3.6
通讯作者：
R. Mcadams;P. Beech;J. Shawcross
中科院分区：
文献类型：
--
作者：
R. Mcadams;P. Beech;J. Shawcross
在实验室规模上研究了等离子体辅助催化还原（PACR）对船舶柴油机尾气中NOx的去除效果。在350°C、60 J/l的等离子体比能和两种NOx浓度（1，200和1，800 ppm）下测量到超过90%的PACR NOx还原。在250°C、60 J/l和1，200 ppm NOx的模拟船用发动机条件下，测得PACR NOx减少超过50%。在这些条件下的性能可以增加，实现了74% NOx还原的峰值，尽管在相对高的等离子体功率下。水，存在于柴油机排气中，被证明可以抑制燃料硫的中毒效应，使用SO2作为代表性的排气成分。PACR系统性能证明了在测试期间对高达1%的模拟燃料硫含量的耐受性。PACR的性能也被证明是敏感的烃还原剂的用量。
Plasma Assisted Catalytic Reduction (PACR) of NOxhas been investigated at laboratory scale for gas stream compositions representative of marine diesel exhausts. PACR NOxreduction in excess of 90% was measured at 350°C, a plasma specific energy of 60 J/l and two NOxconcentrations (1,200 and 1,800 ppm). PACR NOxreduction of over 50% was measured for simulated marine engine conditions at 250°C, 60 J/l and 1,200 ppm NOx. The performance under these conditions could be increased, achieving a peak of ∼74% NOxreduction, although at a relatively high plasma power. Water, present in diesel exhaust, was shown to inhibit the poisoning effects of fuel sulphur using SO2as a representative exhaust component. The PACR system performance demonstrated tolerance to simulated fuel sulphur levels of up to 1% for the duration of the tests. PACR performance was also shown to be sensitive to the amount of hydrocarbon reductant used.