水喷雾对非热等离子体流吸附甲苯分解的影响

T. Kuroki, Masanari Tanaka, M. Okubo
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引用次数: 1

摘要

我们一直在研究一种利用非热等离子体流分解吸附的挥发性有机化合物(VOCs)的技术,这种技术很容易用小型设备以低成本产生。在这项研究中,我们研究了水喷雾对利用非热等离子体流实现吸附甲苯分解的影响。在吸附剂上游喷水,应增加OH自由基的数量,OH自由基形成强氧化剂,从而增强甲苯的氧化作用。试验了两种不同的喷水条件:(1)30分钟后喷10秒,60分钟后喷20秒,90分钟至120分钟内每3分钟喷10秒;(II)每5 min喷10 s。将工况I和工况II下的分解效率与不喷水的分解效率进行比较。在不喷水的情况下,在条件I下,实验开始后105min,甲苯的转化率最高可达98%。相比之下,条件II下的转换效率为76%。众所周知,过度的湿度会减少臭氧的产生;因此,转换效率降低。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Effect of water spray on adsorbed toluene decomposition by nonthermal plasma flow
We have been investigating a technology for decomposing adsorbed volatile organic compounds (VOCs) using a nonthermal plasma flow, which is easily generated at low cost with a compact apparatus. In this study, we investigated the effect of water spray on the decomposition of adsorbed toluene that is achieved using nonthermal plasma flow. Spraying water upstream of the adsorbent should increase the amount of OH radicals, which form a strong oxidizing agent, and thereby enhance the toluene oxidation. Two different water spray conditions are tested: (I) spraying for 10 s after 30 min, spraying for 20 s after 60 min, and spraying for 10 s every 3 min from 90 min to 120 min; and (II) spraying for 10 s every 5 min. The decomposition efficiencies under conditions I and II are compared to that achieved without water spray. With no water spray and under condition I, the toluene conversion efficiency reaches a maximum of 98% in 105 min after the experiment starts. In contrast, the conversion efficiency is 76% under condition II. Excessive humidity is known to decrease ozone generation; therefore, the conversion efficiency decreases.
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