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. 75 (1996), No. 11

  • Catalysis of Pyrite for Coal Liquefaction Reaction

    pp. 977-986

    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.75.977

    Catalysis of pyrite on coal liquefaction has been investigated with a 5 L batch-autoclave. The following conclusions are obtained.
    (1) Pulverized pyrite exhibits high catalytic activity for asphaltene hydrogenating reaction so that high oil yield and high grade solvent having high hyodrogen donatability are obtained in the coal liquefaction system.
    (2) It is inferred that oxidation of pulverized pyrite slows down the transformation rate to pyrrhotite which exhibits high catalytic activity on coal liquefaction reaction.
    (3) Sulfur addition to pulverized and oxidized pyrite increases the catalytic activity for asphaltene cracking reaction, but it is not effective for asphaltene hydrogenating reaction . Sulfur addition is supposed to have different effect from pulverization for the catalytic activity of pyrite.
  • The Study of Dry Desulfurization Process Producing Ammonium Sulfate

    pp. 987-992

    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.75.987

    In China the acid rain problem due to SOx from the coal combustion facility has been serious after 80's. It is important to devolop the economical and effective desulfurization process to solve the acid rain problem in China. In this study a new dry desulfurization process producing useful fertilizer as a byproduct has been proposed and studied. The reactant gas of NH3, SO2, and NO2 was supplied into the reactor packed with fly ash or an activated ash where the reaction occurred on the surface of the packed particle. The product of the reaction was analyzed by X ray diffraction (XRD) and other qualitative analysis, the weight change of the packed material after the reaction was measured to calculate the removal rate of SO2. The result showed that the ammonium sulfate could be formed at 110°C when the activated ash was used as the packed material, a coexistence of NO2 improve the removal rate of SO2 significantly and ultra fine (NH4) 2SO4 particles could be newly formed on the flake-like (NH4) 2SO4 surface.
  • Pressure Effects on Hydrogen-Oxygen Reaction over Platinum Catalytic Surface

    pp. 993-998

    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.75.993

    A surface reaction occurs at a certain surface temperature when the catalyst is heated up in a reactive mixture. If homogeneous ignition does not occur, a steady state is observed because the heat produced by the surface reaction is balanced with the heat loss caused by convection, conduction and radiation. The steady temperature is defined as the temperature at the steady state. This paper treats the pressure effects on the surface reaction. Hydrogen and oxygen are used as reactants and nitrogen as an inert gas. The height, width and length of the combustion chamber are 76 mm, 140 mm and 140 mm, respectively. A spherical Pt catalyst sample of 1.5 mm in diameter is sustained in the chamber with two wires of 0.1 mm in diameter. As results, there is a maximum steady temperature at a certain equivalence ratio (ERmax) and ERmax increases with total pressure. At the steady state, it can be approximated that the heat release is evaluated by the mass transfer which includes the effect of natural convection. The experimental results could be explained qualitatively by the approximation.

Article Access Ranking

07 May. (Last 30 Days)

  1. Perspective toward Long-term Global Goal for Carbon Dioxide Mitigation in Steel Industry Tetsu-to-Hagané Vol.105(2019), No.6
  2. Steam Reforming of Methane on Sponge Iron: Influence of Gas Composition on Reaction Rate ISIJ International Vol.61(2020), No.1
  3. Preface to the Special Issue on “Toward Suppression of Hydrogen Absorption and Hydrogen Embrittlement for Steels” ISIJ International Vol.61(2021), No.4
  4. Automatic Ultrasonic Testing of Non-metallic Inclusions Detectable with Size of Several Tens of Micrometers Using a Double Probe Technique along the Longitudinal Axis of a Small-diameter Bar ISIJ International Vol.61(2020), No.1
  5. Rapid Method to Measure Hydrogen Diffusion Coefficient in Metal Using a Multi-sine Wave Signal ISIJ International Vol.61(2021), No.4
  6. Three-dimensional Investigations of Non-metallic Inclusions in Stainless Steels before and after Machining ISIJ International Advance Publication
  7. Review of Positron Lifetime Studies of Lattice Defects Formed during Tensile Deformation in a Hydrogen Environment ISIJ International Vol.61(2021), No.4
  8. Method for Evaluating Hydrogen Embrittlement of High-Strength Steel Sheets Considering Press Formation and Hydrogen Existence State in Steel ISIJ International Vol.61(2021), No.4
  9. A Visualization Method of Quantifying Carbon Combustion Energy in the Sintering Packed Bed ISIJ International Advance Publication
  10. Effects of Stress and Plastic Strain on Hydrogen Embrittlement Fracture of a U-bent Martensitic Steel Sheet ISIJ International Vol.61(2021), No.4

Search Phrase Ranking

07 May. (Last 30 Days)

  1. blast furnace
  2. blast furnace permeability
  3. coke oven gas injection
  4. ultrasonic inclusion
  5. blast furnace productivity
  6. continuous casting of electrical steel
  7. slag
  8. activities in the liquid solution sio2-cao- mgo-al2o3 at 1600℃
  9. activity coefficient of ti in liquid iron
  10. cokes gasification