Journal of the Japan Institute of Energy
Online ISSN : 1882-6121
Print ISSN : 0916-8753
ISSN-L : 0916-8753
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Volume 81, Issue 3
Displaying 1-3 of 3 articles from this issue
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  • Changes in the Energy Problem and the Required New Framework for the Solution
    Kenji KURATA, Keiji KANDA
    2002 Volume 81 Issue 3 Pages 190-197
    Published: March 20, 2002
    Released on J-STAGE: June 28, 2010
    DOIhttps://doi.org/10.3775/jie.81.190
    JOURNAL FREE ACCESS
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    Until recently, the energy problem in Japan had been the problem of how enough energy could be supplied to various sectors in society under Japan's conditions of only a few energy resources existing within its territory. However, recently new environmental and social conditions are arising. These new conditions strongly affect not only concrete measures for resolving the energy problem but also the characteristics of the energy problem itself. Nowadays, it seems to be impossible to resolve the energy problem without taking these conditions into consideration. For this reason, a new framework, which enables various social values to be reflected in concrete measures, is urgently needed to resolve the energy problem.
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  • Analysis on a Fuel Spray Mixture Suffered by Partial Oxidation through a Catalytic Honeycomb
    Toshio MOGI, Masataka ARAI
    2002 Volume 81 Issue 3 Pages 198-205
    Published: March 20, 2002
    Released on J-STAGE: June 28, 2010
    DOIhttps://doi.org/10.3775/jie.81.198
    JOURNAL FREE ACCESS
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    A fuel spray mixture suffered by partial oxidation through a catalytic honeycomb was studied experimentally. The palladium catalyst supported on the cordierite honeycomb monolith was used. Kerosene vapor was introduced into the ca talytic honeycomb. The parabolic shape blue flame that was supported on the catalytic honeycomb was formed even if the equivalence ratio of the mixture was less than stoi-chiometry. To clarify a reaction process in an combustible gas between the honeycomb and the blue flame, CO, HC (C1-C7) and NO were analyzed. When blue flame appeared, CO and HC concentration were increased between the honeycomb and flame. Further, high molecular species (C8-C15) in the combustible gas were trapped by the water-cooled condenser system and they were analyzed by the gas chromatograph and mass spectroscopy. Spontaneous emission spectra from the blue flame were measured. Strong spectral peaks of OH, CH and H2O radicals were observed in it. To compare with the spectra, spontaneous emission spectra from the pre-vaporized flame of kerosene mixture were measured.
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  • A Model of SO2 Removal by Single Limestone Particle under Pressurized Fluidized Bed Combustion Conditions with Solid Attrition
    Tadaaki SHIMIZU, Mirko PEGLOW, Kazuaki YAMAGIWA, Masato TANAKA
    2002 Volume 81 Issue 3 Pages 206-215
    Published: March 20, 2002
    Released on J-STAGE: February 23, 2011
    DOIhttps://doi.org/10.3775/jie.81.206
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    A mathematical model of SO2 capture by single limestone particle under pressurized fluidized bed combustion conditions was proposed. In the present model, particle attrition was taken into consideration. Effect attrition mode, i.e. continuous attrition or intermittent attrition, on overall reaction rate, overall reaction order with respect to SO2 concentration, and maximum utilization of solid were evaluated. Attrition mode had a great influence on sulfur capture behavior even if the average attrition rate was the same. Attrition mode was found to be very important to make a model of SO2 capture in pressurized fluidized bed
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