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

日益提高的环境意识和法规推动了对从常压气流中修复毒素的新方法的研究。在第一届国际EPRI/NSF高级氧化技术研讨会上，等离子体修复被确定为处理受污染的气流和空气的一种很有前途的技术。对来自移动排放源(例如，柴油卡车发动机排放的NOx)、远程或零星排放源(例如，柴油应急发电机)或小型设施(例如，从干洗店释放的挥发性有机溶剂，VOC)的有毒气体进行等离子修复需要低成本、低电压、紧凑和可靠的系统，以高效和选择性地将有毒气体转化为无害或更可处理的产品。介质阻挡放电是这些系统的候选。在这个项目中，将对受污染的大气压气流的等离子体修复进行多维计算机模拟。这项工作的目标是：a)研究使用介质阻挡放电的等离子体修复系统的流体力学和等离子体化学；b)开发能够用于设计实际可制造系统的有毒气体的等离子体修复的计算机模型；以及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，验证模型并实施建议。测试系统将是柴油尾气中的NOx修复。VOCs的补救措施将在稍后进行调查。

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.