• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to project page

1999 Fiscal Year Final Research Report Summary

Development of non-thermal plasma reactors for mobile emission sources

Research Project

Project/Area Number 10555087
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section展開研究
Research Field 電力工学・電気機器工学
Research InstitutionThe University of Tokyo

Principal Investigator

SHIMIZU Kazuo  The University of Tokyo, School of Engineering, Research Associate, 大学院・工学系研究科, 助手 (90282681)

Co-Investigator(Kenkyū-buntansha) NISHIOKA Masateru  The University of Tokyo, School of Engineering, Research Associate., 大学院・工学系研究科, 助手 (00282575)
ODA Tetsuji  The University of Tokyo, School of Engineering, Professor, 大学院・工学系研究科, 教授 (90107532)
Project Period (FY) 1998 – 1999
Keywordsnon-thermal plasma / catalyst / NOx / pulse discharge
Research Abstract

In order to control air pollution, several researchers have applied atmospheric pressure, non-thermal plasma processing to polluted gases and reported its effectiveness in removing NOx. We have already studied the feasibility of combining non-thermal plasma with catalysts to improve energy efficiency.
The removal of NOx by non-thermal plasma with catalysts was investigated in the presence of water vapor and hydrocarbons. Catalysts tested in this paper were copper- and sodium-coated zeolite (CuZSM-5, NaZSM-5) and a conventional 3-way catalyst (Pt-Rh, alumina cordierite). The simulated flue-gases had from zero to 15% water vapor. Seventy percent (70%) NO removal was achieved with NaZSM-5 catalyst at 200-500 ℃, with 10% moisture and the power to the reactor turned off. High temperature removal of NOx was the result of plasma chemical reactions and adsorption in the catalyst. However, non-thermal plasma degrades the NOx removal with CuZSM-5 catalyst, when the gas temperature is 300℃ or above. When the gas temperature was 100℃, the non-thermal plasma process was enhanced by the combination of non-thermal plasma with any type of catalyst. The catalysts investigated in this paper do not work at lower temperatures by themselves. Adsorption characteristics were also investigated and only NaZSM-5 catalyst showed significant adsorption.
Also, to improve NOx removal reactions, hydrocarbons were added where real exhaust gas contains hydrocarbons from incomplete combustion. However some catalysts have shown NOx adsorption. In order to overcome these difficulties, mesh electrode-plate dielectric barrier reactors have newly developed to increase NOx removal efficiency. It has superiority over wire-cylinder reactors we have used formally. These superior points are shown below.
1) A use of small quantity of catalyst (0.8-1g) coated on plate surface
2) Law pressure loss (without any pellets or honeycomb catalysts)
3) High electric field achieved by narrow gap (2-3 mm).

  • Research Products

    (14 results)

All Other

All Publications (14 results)

  • [Publications] T. Oda and K. Shimizu: "Non-thermal Plasmas Processing of Flue Gas as a DeNOx Related with Catalytic Reactions"J. Adv. Oxid. Technol.. Vol. 4. 352-357 (1999)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] T. Oda, K. Shimizu et al.: "Nitric Oxide decomposition in Air by Using Non-thermal Plasma Processing with Additives and Catalyst"IEEE Trans. on IAS. Vol. 34. 268-272 (1998)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] K. Shimizu and T. Oda: "DeNOx Process by Using Non-thermal Plasma and Zeolite Catalyst"Proc. of 12th Sympo. on Plasma Science for Materials. 98 (1998)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] K. Shimizu, T. Hirano, T. Oda: "Effect of Catalyst and Water Vapor on Non-thermal Plasma Processing of Flue Gas"Proc. Int'l Symp. on Advanced Oxidation Technologies. 19-22 (1998)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] K. Shimizu, T. Hirano, T. Oda: "Effect of Water Vapor and Hydrocarbons in Removing NOx by Using Non-thermal Plasma"IEEE/IAS Annual meeting conf. rec.. 1865-1870 (1998)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] K. Shimizu, T. Hirano, T. Oda: "Non-thermal Plasma Processing of Flue Gas with Catalytic Reactions, and Water Vapor"Proc. of ICESP VII. 310-315 (1998)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] T. Oda, and K. Shimizu: "Non-thermal Plasmas Processing of Flue Gas as a DeNOx Related with Catalytic Reactions"J. Adv. Oxid. Technol.. vol. 4. 352-357 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] K. Shimizu, and T. Oda: "DeNOx Process in Flue Gas Combined with Non-thermal Plasma and Catalyst"IEEE Trans. on IAS. Vol. 35. 1311-1317 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] T. Oda, T. Kato, T. Takahashi, and K. Shimizu: "Nitric Oxide decomposition in Air by Using Non-thermal Plasma Processing with Additives and Catalyst"IEEE Trans. on IAS. Vol. 34. 268-272 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] K. Shimizu, and T. Oda: "DeNOx Process by Using Non-thermal Plasma and Zeolite Catalyst"Proc. of 12th Sympo. On Plasma Sci. for Materials. 98 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] K. Shimizu, T. Hirano, and T. Oda: "Effect of Catalyst and Water Vapor on Non-thermal Plasma Processing of Flue Gas."Proc. Int'l Symp. on Advanced Oxidation Tech. 19-22 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] K. Shimizu, T. Hirano, and T. Oda: "Effect of Water Vapor and Hydrocarbons in Removing NOx by Using Non-thermal Plasma"IEEE/IAS Annual meeting conf. rec.. 1865-1870 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] K. Shimizu, T. Hirano, and T. Oda: "Non-thermal plasma Processing of Flue Gas with Catalytic Reactions and Water Vapor"Proc. of ICESP VII. 310-315 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] T. Oda, T. Kato, T. Takahashi, and K. Shimizu: "Nitric Oxide decomposition in Air by Using Non-thermal Plasma Processing with Additives and Catalyst"IEEE Trans. on IAS. Vol. 34. 268-272 (1998)

    • Description
      「研究成果報告書概要(欧文)」より

URL: 

Published: 2001-10-23  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi