2016 Fiscal Year Final Research Report
Pyrolysis and oxidation of particulates in exhaust gas by laser induced breakdown plasma
| Project/Area Number |
15K13891
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Thermal engineering
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| Research Institution | Shibaura Institute of Technology |
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Principal Investigator |
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| Co-Investigator(Renkei-kenkyūsha) |
MAEDA Shingo 芝浦工業大学, 工学部, 准教授 (40424808)
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| Project Period (FY) |
2015-04-01 – 2017-03-31
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| Keywords | レーザ誘起ブレークダウン / アブレーション / プラズマ / 排ガス処理 / 粒子状物質 / すす |
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| Outline of Final Research Achievements |
In this research, pyrolysis and oxidation of fine carbon particles by using laser induced breakdown followed by plasma state were investigated experimentally. First, in an attempt to have basic knowledge about the effects of pulse laser irradiation to carbon, we conducted preliminary experiments of pulse laser irradiation on solid-state carbon specimens. As a result, it was confirmed that carbon removed from the surface of the solid-carbon spevcimen by ablation is partially oxidized to carbon dioxide. Next, we targeted dispersed two-phase pipe flow in which the size of the solid-carbon particles is nanoscale. The number density of the carbon nanoparticles was confirmed to derease in the downstream region of the laser irradiation area. Although the removal efficiency of fine carbon particles is not so high at this moment, we believe that the experimental results obtained here suggest the possibility of utilization of laser for vaporization and oxidation of fine carbon particles.
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| Free Research Field |
燃焼工学、熱工学
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