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DOSE ENHANCEMENT IN ELECTRON BEAM DENOX AND DESOX

Research Project

Project/Area Number 59420027
Research Category

Grant-in-Aid for General Scientific Research (A)

Allocation TypeSingle-year Grants
Research Field 電力工学
Research InstitutionThe University of Tokyo

Principal Investigator

MASUDA Senichi  Professor, Faculty of Engineering, University of Tokyo, 工学部, 教授 (40010615)

Co-Investigator(Kenkyū-buntansha) ITAGAKI Toshifumi  Technical Official, Faculty of Engineering, University of Tokyo (60242012)
Project Period (FY) 1984 – 1986
Project Status Completed (Fiscal Year 1986)
Budget Amount *help
¥36,000,000 (Direct Cost: ¥36,000,000)
Fiscal Year 1986: ¥6,000,000 (Direct Cost: ¥6,000,000)
Fiscal Year 1985: ¥10,000,000 (Direct Cost: ¥10,000,000)
Fiscal Year 1984: ¥20,000,000 (Direct Cost: ¥20,000,000)
KeywordsElectron Beam / De <NO_x> / De <SO_x> / Dose Enhancement / High Voltage Pulse / Corona Discharge / 電気集麈
Research Abstract

Tests on removal of <NO_x> and <SO_x> from combustion gas using pulse-induced corona discharge has been performed and it is confirmed that pulsed corona is effective for removal of NO by its oxidation to <NO_2> and removal of <NO_2> by its conversion to other substances. The reaction speed is greatly enhanced by raising the peak field intensity, which requires the use of very sharp pulse. The speed of these two processes by positive pulsing is more than one order of magnitude higher than that by negative pulsing. This is because the positive pulsing produces streamer coronas bridging across the entire electrode gap to produce copious active species in the entire gap space, whereas negative pulsing produces small streamer coronas restricted in an area around the corona wire. However, there is no difference in the energy yield of NO-removal, compared at the same residence time and same total power consumption. <SO_2> can also be removed by pulsing, but the use of negative pulsing does not come into question owing to its too slow effect. The addition of <NH_3> produces <SO_2> -reduction by itself, but it does not produce an additional enhancement of <SO_2> -removal by pulsed corona. When pulsed corona is used for dose enhancement in electron beam De <NO_x> and De <SO_x> , it is mecessary to consider these two processes separately, since there is no evidence for pulsed corona to enhance the effective dose beyond its own effect. However, the volume of the electron beam reactor might be better exploited by pulsed corona without too much additional expenditures. Again in this case, the energy yield of pulsed corona will become the matter of primary concern. In such application, positive pulsing should be used as the gas residence time in the electron beam reactor is short (ca. 3 seconds).

Report

(2 results)
  • 1986 Final Research Report Summary
  • 1985 Annual Research Report
  • Research Products

    (7 results)

All Other

All Publications (7 results)

  • [Publications] 増田閃一,中尾英之: 静電気学会講演論文集´85. 162-165 (1985)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1986 Final Research Report Summary
  • [Publications] Senichi Masuda;Hideyuki Nakao: Record of IEEE/IAS 1986 Annual Meeting. 1173-1182 (1986)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1986 Final Research Report Summary
  • [Publications] 増田閃一,中尾英之: 静電気学会講演論文集´86. 171-174 (1986)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1986 Final Research Report Summary
  • [Publications] Masuda, Senichi and Nakao, Hideyuki: "EFFECTS OF SUBMICROSECOND PULSE CORONA DISCHARGE ON REMOVAL OF NOX" Proceedings of 1985 Annual Meeting of The Institute of Electrostatics Japan. 162-165 (1985)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1986 Final Research Report Summary
  • [Publications] Masuda, Senichi and Nakao, Hideyuki: "CONTROL OF NOX BY POSITIVE AND NEGATIVE PULSED CORONA DISCHARGES" Record of IEEE/IAS 1986 Annual Meeting. 1173-1182 (1986)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1986 Final Research Report Summary
  • [Publications] Masuda, Senichi and Nakao, Hideyuki: "REMOVAL OF NOX AND SOX BY PULSE CORONA DISCHARGE" Proceedings of 1986 Annual Meeting of The Institute of Electrostatics Japan. 171-174 (1986)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1986 Final Research Report Summary
  • [Publications] 静電気学会講演論文集′85 第9回. (1985)

    • Related Report
      1985 Annual Research Report

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Published: 1987-03-31   Modified: 2016-04-21  

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