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. 74 (1995), No. 6

  • Energy balance of China in 2010

    pp. 378-386

    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.74.378

    In order to assess the impact of the economic growth on the energy structure, the total primary energy supply (TPES) of China in 2010 was estimated assuming that the ratio of energy consumption to the GNP growth is 0.7. This ratio is nearly the average of GNP growth rate in China from 1981 to 1990, after the projection of energy demand of various the sectors, e. g., industry, transportation, and other sectors. Our estimated TPES was then compared with the TPES projected for the same year by the International Energy Agency (IEA) and by the Energy Research Center China (ERCC).
    As the result of this study, it is clear that the TPES is significantly affected by the assumed energy consumption to the GNP growth ratio. The lower GNP growth projected by IEA and ERCC (between 0.43 and 0.53) resulted in lower in lower TPES estimates, when compared to our predictions. In our estimation, coal will still be one of the main energy resources for China at 2010. If the fractional distillation technology to convert crude oil to gasoline and diesel oil is remarkably improvemed, the clude oil supply will then depend on the demand for liquid fuel for transportation. Therefore the increase in the motorization will likely have a great influence on structure of energy demand and supply in China in the near future.
  • Sintering Behavior of Flying Slag Particles in Entrained Bed Coal Gasifiers

    pp. 387-393

    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.74.387

    Flying slag particles have a tendency to deposit and sinter on the exit wall of entrained coal gasifiers. Sintering behavior was examined using water quenched slag and char obtained by the Taiheiyo coal gasification at the pilot plant of HYCOL (Research Association for Hydrogen from Coal Process Development). This plant was designed to gasify 50 tons of coal per day. In this paper the compressive strength was measured and used to estimate the sintering temperature . The sintering temperature of the slag was approximately 800°C, whereas that of the standard JIS ash was 1050°C. It was also found that the presence of carbon in the slag hindered the progress of sintering. When the concentration of carbon in the slag was above 4%, the slag did not sinter even at 900°C. SEM and EDX analyses showed that the carbon in the slag acted as a dispersant. The X-ray diffraction for the cold slag could hardly detect peaks because it was quenched and amorphous. However, the peak intensity of Anorthite detected in the heat treated slag and the JIS ash. The peak intensity of Anorthite was increased with increasing heat treatment temperature and time, but not much affected by the carbon content. This suggests that the slag melts partially regardless of the carbon content, but the carbon hinders the progress of sintering.
  • Study on Entrained Flow Gasification of Coal under Ash Fusion Controlling (II)

    pp. 394-401

    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.74.394

    A laboratory scale entrained bed coal gasifier was used to study ash melting behavior and the effect of flux addition on the ash melting behavior. Blair Athol coal, Taiheiyo coal and limestone as a flux were used in this study.
    Ashes produced by char gasification, mostly adhere to the surface of unreacted char particle, and flow together with char in gases flow. Ash adhension to the gasifier wall, ηa, w was increased with the progress of gasification, and was mostly increased around at the exit of gasifier, where char gasification was in the final stage.
    By the flux addtion, slag (Blair Athol coal, FT > 1873K) melting temperature was reduced to 1613K, when CaO content is about 40wt% in slag. The ratio of flux in slag to the flux added, η was found to about 0.65 in this work.
    Melting temperature change of slag with flux addition can be explained by the mineral change in slag with a phase diagram for CaO-Al2O3-SiO2 compositions.

Article Access Ranking

16 Oct. (Last 30 Days)

  1. Preface to the Special Topics on “Cutting-edge Technologies and Scientific Researches of Zinc and Zinc Alloy Coated Steel Sheets” ISIJ International Vol.58(2018), No.9
  2. Mechanical Property of Ultrafine Elongated Grain Structure Steel Processed by Warm Tempforming and Its Application to Ultra-High-Strength Bolt Tetsu-to-Hagané Advance Publication
  3. Improvement of Wettability between Steel and Liquid Zn–Al Alloy by Forced Wetting ISIJ International Vol.58(2018), No.9
  4. Automotive Corrosion and Accelerated Corrosion Tests for Zinc Coated Steels ISIJ International Vol.58(2018), No.9
  5. Effect of Annealing Temperature on the Selective Oxidation and Reactive Wetting of a 0.1C-6Mn-2Si Advanced High Strength Steel During Continuous Galvanizing Heat Treatments ISIJ International Vol.58(2018), No.9
  6. Effect of Si/Mn Ratio on Galvannealing Behavior of Si-added Steel ISIJ International Vol.58(2018), No.9
  7. Crystal Structures and Mechanical Properties of Fe–Zn Intermetallic Compounds Formed in the Coating Layer of Galvannealed Steels ISIJ International Vol.58(2018), No.9
  8. Micro-Vickers Hardness of Intermetallic Compounds in the Zn-rich Portion of Zn–Fe Binary System ISIJ International Vol.58(2018), No.9
  9. Influence of Annealing Temperature and Dew Point on Kinetics of Mn External Oxidation ISIJ International Vol.58(2018), No.9
  10. Fracture Toughness of the Fe–Zn Intermetallic Compounds Measured by Bend Testing of Chevron-Notched Single-Crystal Microbeams ISIJ International Vol.58(2018), No.9

Search Phrase Ranking

16 Oct. (Last 30 Days)

  1. blast furnace
  2. blast furnace permeability
  3. blast furnace productivity
  4. isij international
  5. 半田恒久
  6. isij
  7. local formability high strength steel
  8. carbon monoxide reduction and accompanying swelling of lron oxide compacts
  9. castrip process
  10. convertor scrap