| Project/Area Number |
13650313
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
電力工学・電気機器工学
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| Research Institution | Oita University |
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Principal Investigator |
KANAZAWA Seiji Oita University, Department of Electrical and Electronic Engineering, Associate Professor, 工学部, 助教授 (70224574)
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| Co-Investigator(Kenkyū-buntansha) |
OHKUBO Toshikazu Oita University, Department of Electrical and Electronic Engineering, Associate Professor, 工学部, 教授 (00094061)
NOMOTO Yukiharu Oita University, Department of Electrical and Electronic Engineering, Professor, 工学部, 教授 (90037953)
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| Project Period (FY) |
2001 – 2002
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| Project Status |
Completed (Fiscal Year 2002)
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| Budget Amount *help |
¥900,000 (Direct Cost: ¥900,000)
Fiscal Year 2002: ¥900,000 (Direct Cost: ¥900,000)
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| Keywords | LIF / NOx / Streamer / Non-thermal plasma / Gaseous pollution control / Ionic wind / Environmental protecion technology / 非熱平衡プラズマ / 大気圧放電プラズマ / 反応器内NO分布 |
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| Research Abstract |
Non-thermal plasma process has been considered to be an effective method to remove NOx from flue gas. In order to optimize the reactor and provide the information for numerical simulation of NOx removal, it is important to study directly the discharge induced plasma chemical processes responsible for NOx removal in the reactor. Laser-induced fluorescence (LIF) is a useful diagnostic method for in-situ observation of the phenomena during the NOx removal. The main objective of the presented work is visualization of two-dimensional NO concentration and monitoring the process of NOx removal inside the corona radical shower reactor. Planar laser induced fluorescence (PLIF) was employed for this purpose. The corona radical shower reactor consists of a nozzle-to-plate electrode system, having an electrode gap of 50mm. Stable dc streamer corona discharge was generated and laser pulses in the form of the sheet were shot between the electrodes during the discharge. LIF signal emitted at 90 degree to the laser sheet was imaged onto a gated ICCD camera and the two-dimensional LIF images from the various regions of the reactor were recorded. By the wide range imaging of NO (image size: 240mm in width and 160mm in height), two-dimensional distributions of NO could be observed not only the discharge zone but also both the downstream and the upstream regions of the reactor. In the present reactor at a low main gas flow rate, electrohydrodynamic (EHD) flow became dominant, and the flow towards the upstream affected the decrease of NO along the reactor from the upstream region. It is considered that this information is important for modeling and optimizing the plasma processes and designing the non-thermal plasma reactors.
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