Modeling of gas reactions in denitrification from flue gas by discharge plasma

Conference Record of the 2004 IEEE Industry Applications Conference, 2004. 39th IAS Annual Meeting. Pub Date : 2004-11-01 DOI:10.1109/IAS.2004.1348804

Dong Li-min, Zhou Zhi-qiang, Chi Xiao-chun, Yang Jia-Yang

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Abstract

Modeling of plasma discharge is a necessary complement for experimental investigation not only because it helps in understanding the fundamental chemistry and physics governing the discharge but also because it is necessary for the design and analysis of the performance of plasma devices. In this paper, a kinetics model was developed to characterize the chemical reactions taking place in a nonthermal plasma denitrification processes using a Matlab programs. The typical gas composition in this model is N/sub 2//O/sub 2//H/sub 2/O/CO/sub 2/=74/5/6/15 with 500 ppm NO and 1000 ppm SO/sub 2/ at the atmospheric pressure and 300 K. The calculations indicate that nitrogen oxide is removed principally by reactions with OH radicals to produce nitric acid. The removal rate of NO increased with increasing water vapor and oxygen content in the flue gas indicates. The presence of both O/sub 2/ and H/sub 2/O in the gas mixture gives the possibility to form a more extensive and reactive set of radicals for the oxidation of NO.

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放电等离子体烟气脱硝过程中气体反应的模拟

等离子体放电的建模是实验研究的必要补充，不仅因为它有助于理解控制放电的基本化学和物理，而且因为它对等离子体器件的设计和性能分析是必要的。本文利用Matlab程序建立了非热等离子体脱氮过程化学反应的动力学模型。该模型中典型的气体组成为:N/sub 2//O/sub 2//H/sub 2/O/CO/sub 2/=74/5/6/15, 500ppm NO和1000ppm SO/sub 2/在大气压和300k下。计算表明，氧化氮主要通过与OH自由基反应生成硝酸而被除去。随着烟气中水蒸气和氧含量的增加，NO的去除率增加。混合气体中O/sub 2/和H/sub 2/O的存在使得形成更广泛和更活跃的NO氧化自由基成为可能。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Conference Record of the 2004 IEEE Industry Applications Conference, 2004. 39th IAS Annual Meeting.

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