Electron beam degradation of simulated toluene-containing exhaust gas

CHU Hailin MAO Benjiang YANG Ruizhuang CHEN Haiyan XU Jian 1

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Electron beam degradation of simulated toluene-containing exhaust gas

更新时间：2021-03-12

- Electron beam degradation of simulated toluene-containing exhaust gas
- NUCLEAR TECHNIQUES Issue 6, (2007)
- 作者机构：
  
  1. 中国工程物理研究院环保工程研究中心
  2. 中国工程物理研究院环保工程研究中心,绵阳,621900
- 作者简介：
- 基金信息：
  
  中国工程物理研究院科学技术基金面上资助课题(No.20060540)
- DOI：
  CLC： X701
- Published：01 June 2007
- 稿件说明：
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[1]褚海林,毛本将,杨睿戆,陈海燕,徐建.电子束辐照处理模拟甲苯废气实验研究[J].核技术,2007(06):522-526.

CHU Hailin MAO Benjiang YANG Ruizhuang CHEN Haiyan XU Jian 1. Electron beam degradation of simulated toluene-containing exhaust gas[J]. Nuclear techniques, 2007, (6): 522-526.
[1]褚海林,毛本将,杨睿戆,陈海燕,徐建.电子束辐照处理模拟甲苯废气实验研究[J].核技术,2007(06):522-526. DOI：

CHU Hailin MAO Benjiang YANG Ruizhuang CHEN Haiyan XU Jian 1. Electron beam degradation of simulated toluene-containing exhaust gas[J]. Nuclear techniques, 2007, (6): 522-526. DOI：

摘要

以甲苯作为挥发性有机化合物的代表物质

在800keV电子束的辐照下

模拟甲苯废气的气量在0.5—1.2m3/h范围内

研究了甲苯初始质量浓度为1600—4630mg/m3时吸收剂量、甲苯初始浓度和湿度对于甲苯分解效率的影响。实验结果表明

电子束辐照可有效去除甲苯

甲苯初始质量浓度为1600mg/m3

辐照10kGy和40kGy

甲苯去除率分别为46.5%和72.2%;增加湿度也可提高甲苯去除率。用气相色谱-质谱仪（GC-MS）和离子色谱仪（IC）定性研究了辐解产物。甲苯辐解产物比较复杂

主要含有苯甲醛、甲酸等物质。也探讨了电子束辐照处理甲苯气体的主要机理

讨论了O2和.OH对于电子束辐照分解甲苯中的重要作用。

Abstract

With toluene as an example

experimental investigation on VOCs treatment by electron beam irradiation was carried out. The system uses 0.8 MeV electron beams to irradiate simulated toluene-containing gases to 5kGy-40kGy for investigatiing effects of initial concentration

absorbed dose

humidity on toluene removal rate. The toluene removal rate increased with absorbed dose. With 0.5~1.2Nm3/h of the gas flow at an initial toluene concentration of 1600mg/Nm3

the toluene removal rate was 46.5% at 10kGy and 72.2% at 40kGy. And increasing humidity increased the toluene removal rate

too. Qualitative analysis on by-products of the toluene degradation was made by means of Gas Chromatogram-Mass Spectrometer (GC/MS) and Chromatography of Ions (IC). It was found that the by-products consist of mainly benzaldehyde and formic acid

plus a little benzoic acid

benzyl alcohol

methyl pyridine

nitrotoluene

o-cresol

phenol and benzoin ethyl etherl. Mechanisms of the E-beam toluene removal

i.e. the contributions of .OH free radicals and O2 to the oxidation of toluene

were discussed.

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