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. 81 (2002), No. 10

  • A Study on the Economic Evaluation Method of Coal Resources (II)

    pp. 915-929

    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.81.915

    In the previous report, the authors analysed economically mineable coal resource by way of scrutinizing production and railway transportation cost with respect to horizontal and vertical annual progress, and annual removal of coal mining front line in NSW State, Australia, and concluded that the front line removal of coal mining could be extinct only in 13 years or one twenty fifth of duration in terms of demonstrated coal resources released by the State Government.
    The authors therefore studied subsequently the pragmatic economic evaluation method envisaging that numerous numbers of studies covering World's potential coal fields are essential to detect actually available coal tonnages produced and supplied to the coal consuming countries particularly to Japan.
    Basic analysis has been carried out in this report to compare established but complicated methodology (IRR) with newly developing conventional but ambiguous in its theoretical back ground (SC).
    As the results of theoretical comparison of these methods, it was found that the SC method is suitable to study the economic potential of the World's major coal fields because
    i) In principle, theoretical back ground of SC is the same as established IRR method.
    ii) Data can be utilized, for the SC calculation is comparably easy to collect from the coal fields.
    x

    Readers Who Read This Article Also Read

    1. EXPERIMENTAL STUDY ON DUCTILE FRACTURE MECHANISM OF STEEL MEMBERS UNDER CYCLIC BENDING Kou kouzou rombunshuu Vol.27(2020), No.105
    2. Chemical Composition of Coal-derived Liquid and Its Upgraded Oils Journal of the Japan Institute of Energy Vol.81(2002), No.10
    3. Local deformation behavior of SHS in beam-to-column connection with exterior-diaphragm assembled by high-strength bolts Kou kouzou rombunshuu Vol.27(2020), No.105
  • Chemical Composition of Coal-derived Liquid and Its Upgraded Oils

    pp. 930-940

    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.81.930

    Coal -derived liquid obtained from 150ton/day NEDOL pilot plant was upgraded over a presulfided Ni-W/Al2O3 catalyst under a hydrogen pressure of 12MPa. The original coal liquid and three upgraded oils were separated into several compound groups and analyzed by GC -FID/NPD, GCMS and FIMS in order to identify the molecular species in the feedstock and upgraded oils.
    The coal liquid was composed of paraffins (17%), naphthenes (20%), oleffins (4%), monoaromatics (17%), polyaromatics (17%) and polar components (25%). After the upgrading over Ni-W/Al2O3, polyaromatics decreased to 0.7-4.7% and polar components were reduced below 0.1%, which resulted in the large increase of naphthenes and naphthenobenzenes. Basic nitrogen compounds (N: 4, 200ppm) in the coal liquid were piridines, anilines, quinolines and benzoquinolines and their hydrogenated derivatives, and nonbasic nitrogen compounds (N: 1, 400ppm) were alkylnitriles, pyrroles, indoles and carbazoles. Sterically hindered nitrogen compounds like 2, 4, 6-trimethylpyridines and 2, 6-anilines tended to remain in upgraded oils. Saturated cyclic nitrogen compounds of which molecular weights were expressed as 165+14n and 205+14n (n=0, 1, 2 …) were found to be least reactive for the denitrogenation, although their detail structure was not identified. Polyaromatic compounds which remained in upgraded oils were biphenyls and dibenzofurans due to their less reactivity and dihydrophenalene and pyrene at their hydrogenation equiribrium.
    x

    Readers Who Read This Article Also Read

    1. EXPERIMENTAL STUDY ON DUCTILE FRACTURE MECHANISM OF STEEL MEMBERS UNDER CYCLIC BENDING Kou kouzou rombunshuu Vol.27(2020), No.105
    2. A Study on the Economic Evaluation Method of Coal Resources (II) Journal of the Japan Institute of Energy Vol.81(2002), No.10
    3. Local deformation behavior of SHS in beam-to-column connection with exterior-diaphragm assembled by high-strength bolts Kou kouzou rombunshuu Vol.27(2020), No.105

Article Access Ranking

07 Dec. (Last 30 Days)

  1. Heat conduction through different slag layers in mold. Thermal conductivity measurement of commercial mold fluxes ISIJ International Advance Publication
  2. Deformation of Non-metallic Inclusions in Steel during Rolling Process: A Review ISIJ International Vol.62(2022), No.11
  3. Activity of Chromium Oxide in Calcium Silicate Bearing Molten Slag for Highly Clean Chromium Steel Refining Process ISIJ International Advance Publication
  4. Effects of basicity and Al2O3 content on the crystal structure of silico-ferrite of calcium and aluminum ISIJ International Advance Publication
  5. Behavior and kinetic mechanism analysis of dissolution of iron ore particles in HIsmelt process based on high-temperature confocal microscopy ISIJ International Advance Publication
  6. Corrections of the figure in the paper “Effect of Cerium and Magnesium Addition on Evolution and Particle Size of Inclusions in Al-killed Molten Steel” [ISIJ International, Vol. 62 (2022), No. 9, pp. 1852-1861] ISIJ International Vol.62(2022), No.11
  7. Precipitation Behavior of Magnetite Phase during Modified Nickel Slag Treated by Molten Oxidation ISIJ International Advance Publication
  8. A shallow neural network for recognition of strip steel surface defects based on attention mechanism ISIJ International Advance Publication
  9. Characterization and Control of Secondary Phase Precipitation of Nb–V–Ti Microalloyed Steel during Continuous Casting Process ISIJ International Vol.62(2022), No.11
  10. Improvement of Sinter Productivity and Qualities by Placing Low Slag Green Pellet at Lower Layer of Sinter Packed Bed ISIJ International Vol.62(2022), No.11

Search Phrase Ranking

07 Dec. (Last 30 Days)

  1. blast furnace
  2. converter slag
  3. si-killed spring steel
  4. 高温変形抵抗
  5. 5%nickel
  6. 钢渣脱磷
  7. coatings hot formed steel
  8. free lime
  9. secondary cooling billet
  10. steel