石炭高効率発電システムにおいて発生する粒子状物質の生成過程と性状

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Coal is an important energy resource for meeting the future demand for electricity since coal reserves are much greater than those of other fossil fuels. However, carbon dioxide emission during coal combustion is greater than that of other fossil fuel because of the higher carbon content. Development of a high efficiency power generation system is essential in order to reduce the carbon dioxide emission from coal for power generation. As a high efficiency coal utilized power generation system, the Pressurized Fluidized Bed Combustion Combined Cycle System (PFBC) and the Integrated Coal Gasification Combined Cycle System (IGCC) have been developed. In these systems, a high temperature dust collection technology is applied for the protection of gas turbines from erosion. It is important to develop an optimal collection method depending on the particle property because the properties of particulates generated at high temperature and pressure are different from those generated by the conventional pulverized coal combustion.In this study, the characteristics of particulate matters from pressurized coal combustion for high efficiency power generation systems are investigated through experiments with a pressurized drop tube furnace as well as by numerical simulation employing a percolation model. It is found that the particulate matters generated from the combustion at high pressure and temperature contains less unburned carbon with a higher fraction of agglomerated spherical particles.
日本エアロゾル学会の論文
2005-03-20

石炭高効率発電システムにおいて発生する粒子状物質の生成過程と性状

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