Journal of the Japan Institute of Energy
New Arrival Alert : OFF

You can use this feature after you logged into the site.
Please click the button below.

Log in / Sign up
ONLINE ISSN: 1882-6121
PRINT ISSN: 0916-8753

Journal of the Japan Institute of Energy Vol. 73 (1994), No. 1

  • The Discharge Coefficient for Swirl Type Pressure Nozzles (II)

    pp. 50-54

    Bookmark

    You can use this feature after you logged into the site.
    Please click the button below.

    Log in / Sign Up

    DOI:10.3775/jie.73.50

    Atomization of non-Newtonian liquids is widely used for spray combustion, spray drying, spray cooling, and so on. The purpose of this study is to predict the discharge coefficient (“C”) of pressure nozzles for non-Newtonian liquids based on the estimation of the apparent viscosity at the injection.
    Detergent slurry is a non-Newtonian liquid with pseudo-plasticity, which is approximated with the generalized-Bingham model.
    It is estimated that the apparent viscosity of slurry at the injection is not so high because of its high shear rates (γ) in the swirl chamber. The shear rate “γ” at the injection is evaluated as the inlet velocity (u) to the swirl chamber divided by the radius of vortex in the swirl chamber (ri-ro). According to this assumption, the apparent viscosity of the detergent slurry is approximately 0.1 to 0.3 Pa·s.
    It is found that the correation between “C” and nozzle parameter “Δm” for the detergent slurry are compatible with those for PEG solution, which is a typical Newtonian liquids, at the viscosity of 0.1 to 0.3 Pa·s. It is considered that the assumption of the apparent viscosity at injection is useful for the prediction of “C” for non-Newtonian liquids.
  • Effects of the Amount of Iron Based Catalysts and Reaction Temperature on Coal Liquefaction

    pp. 55-60

    Bookmark

    You can use this feature after you logged into the site.
    Please click the button below.

    Log in / Sign Up

    DOI:10.3775/jie.73.55

    Effects of the amount of iron based catalysts and reaction temperatures on the liquefaction of Taiheiyo coal was investigated with respect to hydrogen transfer to the products. The catalysts used were FeS2 and a sulfate promoted iron oxide (Fe-sulfate). Amounts of the catalysts were varied in the range of 0.4% to 19% to coal and reaction temperatures were changed between 648K and 723K. Conversions of coal was independent upon kinds of catalyst. Futhermore, the reaction temperature of around 698K was found to be better for both catalysts. On the basis of the hydrogen transfer to the products, it was found that the reaction products obtained at a lower or a higher temperature contained higher aliphatic fraction and higher aromatic fractions, respectively. Another findings were observed in the results on effect of amounts of catalysts. The FeS2 catalyst required more than 8 wt% to coal in order to promote the liquefaction reaction effectively, but the amount of Fe-sulfate catalyst was much smaller. Optimum amount of the Fe-sulfate catalyst was found to be about 2% to coal with respect to effective liquefaction reaction of coal.

Article Access Ranking

21 Sep. (Last 30 Days)

  1. Formation and Evolution of Inclusions in High Chromium Steel ISIJ International Vol.61(2021), No.9
  2. Perspective toward Long-term Global Goal for Carbon Dioxide Mitigation in Steel Industry Tetsu-to-Hagané Vol.105(2019), No.6
  3. Effect of Heating Rate on Carbothermic Reduction and Melting Behavior of Iron Ore-Coal Composite Pellets ISIJ International Advance Publication
  4. Preface to the Special Issue on “Recent Progress in Inclusion/ Precipitate Engineering” ISIJ International Vol.61(2021), No.9
  5. Evaluation of Interfacial Energy between Molten Fe and Fe-18%Cr-9%Ni Alloy and Non-Metallic Inclusion-Type Oxides ISIJ International Vol.61(2021), No.9
  6. Production and Technology of Iron and Steel in Japan during 2020 ISIJ International Vol.61(2021), No.6
  7. Modeling of Wall Shear Stress Induced Inclusion Transport and Removal in Multi-Strand Tundish ISIJ International Vol.61(2021), No.9
  8. Three-dimensional Quantitative Evaluation of the Lamellar Curvature in Pearlitic Steel Based on an Orientation Analysis of Cementite ISIJ International Advance Publication
  9. Analysis of Air-Mist Cooling Effect for Coil in the Electromagnetic Induction Controlled Automated Steel Teeming System ISIJ International Vol.61(2021), No.9
  10. Simultaneous Analysis of Soluble and Insoluble Oxygen Contents in Steel Specimens Using Inert Gas Fusion Infrared Absorptiometry ISIJ International Vol.61(2021), No.9

Search Phrase Ranking

21 Sep. (Last 30 Days)

  1. blast furnace
  2. inconel 600
  3. blast furnace productivity
  4. miyamoto goro
  5. nozzle clogging
  6. b2o3 mold flux
  7. blue carbon
  8. investigation of arc behavior and temperature distribution corresponding to electrode and phase configurations in a multiphase ac arc
  9. ohno
  10. sei kimura