李杰

个人信息Personal Information

教授

博士生导师

硕士生导师

性别:男

毕业院校:大连理工大学

学位:博士

所在单位:电气工程学院

学科:环境工程. 电工理论与新技术. 高电压与绝缘技术

办公地点:大连理工大学电气工程学院静电所

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Improved performance of parallel surface/packed-bed discharge reactor for indoor VOCs decomposition: optimization of the reactor structure

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论文类型:期刊论文

发表时间:2015-10-14

发表刊物:JOURNAL OF PHYSICS D-APPLIED PHYSICS

收录刊物:SCIE、EI、Scopus

卷号:48

期号:40

ISSN号:0022-3727

关键字:indoor VOC degradation; non-thermal plasma; structure optimization

摘要:The purpose of this paper is to develop a high-efficiency air-cleaning system for volatile organic compounds (VOCs) existing in the workshop of a chemical factory. A novel parallel surface/packed-bed discharge (PSPBD) reactor, which utilized a combination of surface discharge (SD) plasma with packed-bed discharge (PBD) plasma, was designed and employed for VOCs removal in a closed vessel. In order to optimize the structure of the PSPBD reactor, the discharge characteristic, benzene removal efficiency, and energy yield were compared for different discharge lengths, quartz tube diameters, shapes of external high-voltage electrode, packed-bed discharge gaps, and packing pellet sizes, respectively. In the circulation test, 52.8% of benzene was removed and the energy yield achieved 0.79 mg kJ(-1) after a 210 min discharge treatment in the PSPBD reactor, which was 10.3% and 0.18 mg kJ(-1) higher, respectively, than in the SD reactor, 21.8% and 0.34 mg kJ(-1) higher, respectively, than in the PBD reactor at 53 J l(-1). The improved performance in benzene removal and energy yield can be attributed to the plasma chemistry effect of the sequential processing in the PSPBD reactor. The VOCs mineralization and organic intermediates generated during discharge treatment were followed by COx selectivity and FT-IR analyses. The experimental results indicate that the PSPBD plasma process is an effective and energy-efficient approach for VOCs removal in an indoor environment.