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Combustion Control Group

Outline

Basic research is being conducted on the combustion reaction kinetics, flame structures, highly efficient combustion and treatment of harmful substances discharged as a result of combustion, and so on. Polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs) are substances unintentionally generated from the combustion of waste. However, since the details of PCDD/Fs formation mechanism are unknown, it is difficult to implement countermeasures in industrial furnaces and relatively small scale incinerators, etc. To control such emissions, we have been implementing researches to 1) investigate the generative behavior of PCDD/Fs and their precursors such as polycyclic aromatic compounds, etc. by using small scale fluidized bed combustors, and 2) to clarify the reaction characteristics of halogen compounds by using shock tubes, laser spectroscopy and numerical analysis, etc.

We are also conducting numerical and experimental investigations on the advanced combustion control and on the limit of combustion in the secondary combustion zone of gas turbine under the conditions of high temperature and lean. Researches on catalysts which can remove dioxins in fly ash and NOx in flue gas are also in progress.

Current Research Theme

• Formation mechanism of PCDDs/PCDFs and PAHs
• Advanced control technology for optimization of practical combustors
• Combustibility of fuel DME
• Recovery and decomposition of chlorofluorocarbon-replacing material

Publications

• "Effect of poly(vinyl chloride) and hydrogen chloride as a chlorine source on the formation of PCDDs and PCDFs in model waste incineration", Organohalogen Compounds, 66, 1085(2004).
• "Role of copper chloride in the formation of polychlorinated dibenzo-p-dioxins and dibenzofurans during incineration", Chemosphere, 57, 73(2004).
• "Dehydrogenation of 2-Propanol with Suspended Noble Metal Catalysts: Activity Enhancement by the Addition of Sodium Hydroxide", Reaction Kinetics and Catalysis Letters, 81, 305(2004).
• "Experimental Study of Extinction and its Quantification in Laminar and Turbulent Counterflow CH4-N2/O2-N2 Nonpremixed Flames", Combustion and Flame, 137, 93(2004).
• "Characteristic Homologue and Isomer Patterns of Polychlorinated Dibenzofrans from Phenol Precursors", Organohalogen Compounds, 66, 1050(2004).
• "Vibrational relaxation of SO(X3SIGMA-,v=1-5) and nascent vibrational distributions of SO generated in the photolysis of SO2 at 193.3 nm", J. Phys. Chem. A, 108, 2382 (2004).
• "Fluorine and Chlorine contents in the Products of the 1783 (Temmei) Eruption of Asama Volcano", Bulletin of the Volcanological Society of Japan, 49, 65(2004).
• "Effect of Combustion Conditions on Homologue Profiles of PCDD/Fs in Model Waste Incineration", Organohalogen Compounds, 63, 90(2003).
• "Effects of copper chloride on formation of polychlorinated dibenzo-p-dioxins in model waste incineration", Chemosphere, 51, 1041(2003).
• "Hydrogen-transfer Hydrodechlorination of Polychlorinated Dibenzo-p-dioxins and Dibenzofurans Catalyzed by Supported Palladium Catalysts", Applied Catalysis B: Environmental, 40, 141(2003).
• "High Temperature Reactions of O+COS and S+SO2. Abstraction versus Substitution Channels", Journal of Physical Chemistry A, 107, 2464(2003).

Staff