Atmospheric Pressure, Plasma Chemistry, Plasma Dynamics, Particle Effects and Gas Dynamics in Plasma Remediation of Toxic Gases

日益提高的环保意识和法规促使人们研究新的方法来修复大气压气流中的毒素。在首届EPRI/NSF高级氧化技术国际研讨会上，等离子体修复被确定为一种有前途的处理污染气流和空气的技术。等离子体修复来自移动排放源（例如，柴油卡车发动机的氮氧化物排放）、远程或零星排放源（例如，柴油应急发电机）或小型装置（例如，干洗店释放的挥发性有机溶剂，voc）的有毒气体流需要廉价、低压、紧凑和可靠的系统，该系统可有效和有选择地将有毒气体转化为良性或更可处理的产品。介质阻挡放电是这些系统的备选方案。在这个项目中，将进行等离子体修复污染大气压力气流的多维计算机建模。这项工作的目标是：a)研究介质阻挡放电等离子体修复系统的流体动力学和等离子体化学；B)开发有毒气体等离子体修复的计算机模型，能够用于设计实际的可制造系统；c)与洛斯阿拉莫斯国家实验室和南加州大学正在进行的实验合作，以验证模型并实施建议。测试系统将从柴油废气中修复氮氧化物。对挥发性有机化合物的整治将在稍后进行调查。

Increasing environmental awareness and regulation have motivated research into new methods to remediate toxins from atmospheric pressure gas streams. At the First International EPRI/NSF Symposium on Advanced Oxidation Techniques, plasma remediation was identified as a promising technology treating contaminated gas streams and air. Plasma remediation of toxic gas streams from mobile emitting sources (for example, Nox emission from diesel truck engines), remote or sporadically emitting sources (for example, diesel emergency generators) or small installations (for example, volatile organic solvents, VOCs, released from dry cleaners) require inexpensive, low-voltage, compact, and reliable systems which efficiently and selectively convert the toxic gas to benign or more treatable products. Dielectric barrier discharges are candidates for these systems. In this project, multidimensional computer modeling of the plasma remediation of contaminated atmospheric pressure gas streams will be performed. The goals of this work are: a) Investigate the hydrodynamics and plasma chemistry of plasma remediation systems using dielectric barrier discharges; b) develop computer models of plasma remediation of toxic gases capable of being used to design practical manufacturable systems; and c) collaborate with experiments being performed at Los Alamos National Laboratory and the University of Southern California to validate the models and implement recommendations. The test system will be Nox remediation from diesel exhaust. Remediation of VOCs will be investigated later.