1995 Fiscal Year Final Research Report Summary
Cooperative Research on Gaseous Air Contaminants Removal by using of Discharge Plasma Processing
| Project/Area Number |
05302078
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| Research Category |
Grant-in-Aid for Co-operative Research (A)
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| Allocation Type | Single-year Grants |
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| Research Field |
環境保全
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| Research Institution | The University of Tokyo |
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Principal Investigator |
ODA Tetsuji The University of Tokyo, Faculty of Engineering, Professor, 大学院・工学系研究科, 教授 (90107532)
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| Co-Investigator(Kenkyū-buntansha) |
TABATA Yasuyuki Institute of Industrial Safety, Department of Electrics and Physics, Director, 産業安全研究所, 部長
OKUYAMA Kikuo Hiroshima University, Faculty of Engineering, Professor, 工学部, 教授 (00101197)
OHKUBO Toshikazu Oita University, Faculty of Engineerin, Professor, 工学部, 教授 (00094061)
OKAZAKI Ken Tokyo Inst.of Techonol., Coal Recycling Center, Professor, 炭素循環素材研究センター, 教授 (20124729)
MIZUNO Akira Toyohashi Inst.of Techonol., Ecology, Professor, エコロジー工学系, 教授 (20144199)
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| Project Period (FY) |
1993 – 1995
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| Keywords | Plasama Processing / VOCs Decomposition / NOx Reduction / Oxidation / Byproducts |
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| Research Abstract |
The main aim of this project is that fundamental research and development of practical technology of cleaning gaseous air contaminants by using Non-Thermal Plasma Processing. Contaminants studied are various volatile organic compounds (VOCs) and NOx in flue gas exhausted from fuel combustion. Typical VOCs are chlorofluoro-carbon (CFC-113 : controlled against ozone layr depletion), halogenated organic compounds (trichloroethylene, tetrachloromethane : cause of cansor or others) and normal organic materials such as alcohol, acetone. Non-Thermal Plasma is generated by various methods. They are high frequency surface discharge using an alumina ceramic reactor with stripe electrode formed on inner wall or a quartz tube with a spiral wire electrode contacted on the inner wall, barrier discharge, or ultra short pulse discharge where barrier is not essential. Combining effects of those discharge or mutual comparison were also tested now. In any case, very high decomposition rate more than 95% is available, if enough dischage energy is supplied. Final products of VOCs decomposition are found to carbondioxide and water. Various byproducts generated by the plasma were identified by using FID-GC,GC-MS and FTIR.It is found that NOx decomposition by the plasma is strongly dependent on the residual oxygen concentration. The addition of anmonia or others is necessary to enhance NOx removal. Combined method of catalysis, additioning and plasma processing was very effective in reducing NOx.
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