Complete SOx and NOx Removal Using Plasma Concertration Technique

来自典型发电厂的气体体积非常大，并且NOx和Sox浓度在100-200 ppm的范围内。因为NOx和SOx去除系统的尺寸变大并且运行成本变高，所以不管控制装置的选择如何，处理这些气体是低效的并且不经济的。应用我们开发的低温等离子体气体浓缩技术，首先用吸附材料吸附烟气，然后用低温等离子体解吸吸附的气体。我们能够从低浓度的大容量转换到高浓度的小容量。等离子体解吸富集技术在常压、低温、低能量、短处理时间下实现。此外，吸附材料可以重复再生。该技术能够将气体体积减少一个数量级，从而显著减小设备尺寸。我们的研究重点是开发创新的NOx去除系统，采用等离子体解吸和非热等离子体-化学混合系统的浓缩技术。本文在前一年所取得的基础数据的基础上，对分子束填充的脉冲电晕等离子体反应器进行了研究，确定了最佳条件。结果，气体体积减少了一个数量级，而浓度增加了20多倍。

Gas volume from a typical power plant is extremely large and NOx and Sox concentrations are low in the range or 100-200 ppm. It is inefficient and not economical to treat these gases as they are because the size of NOx and SOx removal systems becomes large and the running cost becomes high regardless the selection of the control device. Applying more economically sound gas concentration technology using the nonthermal plasma, which we developed, the flue gas was initially adsorbed with the adsorption materials and the adsorbed gas was then desorbed by the nonthermal plasma. We are able to convert from large volume with low concentration to low volume with high concentration. The concentration technique by the plasma desorption was attained at atmospheric pressure and low temperature with low energy and short treatment time. Moreover, adsorbed materials can be regenerated repeatedly. This technology is able to reduce the gas volume by one order of magnitude, resulting in a significant reduction of equipment size. Our research is focused on the development of innovative NOx removal system by employing the concentration technique using the plasma desorption and the nonthermal plasma-chemical hybrid system. Based on the fundamental data obtained from the previous year, the pulsed corona plasma reactor packed with molecular sheaves was investigated to determine the potimum condition. As a result, the gas volume was reduced by one order of magnitude, while the concentration increased more than 20 times.