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. 97 (2018), No. 4

  • Analyses of Exergy and Environmental Impact on Bio-H2 Production System Using 2-step PSA

    pp. 77-87

    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.97.77

    In recent years, technological development of fuel cells has progressed, and hydrogen demand for the fuel is expanding. However, since fossil fuel is mainly used as the energy source for hydrogen, from the viewpoint of life cycle assessment (LCA), even if hydrogen is used as energy, it contributes to the emission of greenhouse gases. Therefore, we have been developing biomass-derived hydrogen (Bio-H2) production process. It was deemed that the hydrogen purification process (PSA; pressure swing adsorption) had the most environmental impact. as a solution to that, we developed a 2-step PSA. However, the effective use of energy and the environmental impact in the Bio-H2 production process that introduced 2-step PSA have not been conducted. Therefore, in order to verify the effective use of energy and the environmental impact of the process, we designed Bio-H2 production process using 2-step PSA based on gasification and purification experimental data, and evaluate the effectiveness of energy use of the process using the exergy analysis. In addition, we assessed the environmental impact of the process using LCA analysis. As a result, it was shown that the exergy efficiency of the 2-step PSA case could be improved by 1.7 points over that of the conventional PSA case. Furthermore, compared to the conventional PSA case, LCA analysis resolved that consumption of fossil fuel would be reduced in the case of 2-step PSA case, and the effect of global warming be greatly reduced. By using the evaluation method integrating the exergy analysis and the environmental impact assessment, which was newly proposed in this paper, we believe that it should contribute to promoting technology development of energy conversion process derived from renewable energy.
    x

    Readers Who Read This Article Also Read

    1. Elemental Speciation Analysis of Iron Compounds in Carbonized Biomass and Its Thermal Behavior by Oxidation Reaction Journal of the Japan Institute of Energy Vol.97(2018), No.10
    2. Behavior of Sulfur in Liquid Phase Oxidation of Coal Journal of the Japan Institute of Energy Vol.97(2018), No.4
  • Behavior of Sulfur in Liquid Phase Oxidation of Coal

    pp. 88-96

    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.97.88

    In order to develop an efficient pre-desulfurization technology for both inorganic and organic sulfurs in coals under the mild condition, oxidative desulfurization using hydrogen peroxide was carried out for five kinds of coals with different rank. The coal samples were agitated in the hydrogen peroxide aqueous solution for 2 h at the room temperature. Pyritic sulfur and sulfate as the inorganic sulfur were removed completely from the solid phase by the treatment. Organic sulfur was simultaneously removed, for example, 84% of organic sulfur was reduced for a low rank coal. The removed sulfur from the solid phase dissolved in the hydrogen peroxide aqueous solution as sulfate. XANES analysis showed that thiophenic sulfurs in the coals changed to sulfoxide and sulfone during the hydrogen peroxide treatment. The removal extent of thiophenic sulfur decreased with the increase of the coal rank and correlated well with the aromaticity of the raw coals.
    x

    Readers Who Read This Article Also Read

    1. Analyses of Exergy and Environmental Impact on Bio-H2 Production System Using 2-step PSA Journal of the Japan Institute of Energy Vol.97(2018), No.4
    2. Table of Contents (in Japanese) Journal of the Japan Institute of Energy Vol.97(2018), No.4
    3. Elemental Speciation Analysis of Iron Compounds in Carbonized Biomass and Its Thermal Behavior by Oxidation Reaction Journal of the Japan Institute of Energy Vol.97(2018), No.10
  • Table of Contents (in English)

    p. 9704tce_1

    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.97.9704tce_1

  • Table of Contents (in Japanese)

    p. 9704tcj_1

    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.97.9704tcj_1

    x

    Readers Who Read This Article Also Read

    1. Behavior of Sulfur in Liquid Phase Oxidation of Coal Journal of the Japan Institute of Energy Vol.97(2018), No.4

Article Access Ranking

17 Apr. (Last 30 Days)

  1. Three-dimensional Investigations of Non-metallic Inclusions in Stainless Steels before and after Machining ISIJ International Advance Publication
  2. Perspective toward Long-term Global Goal for Carbon Dioxide Mitigation in Steel Industry Tetsu-to-Hagané Vol.105(2019), No.6
  3. Influence of Ore Assimilation and Pore Formation during Sintering on Reduction Behavior of Sintered Ores Tetsu-to-Hagané Vol.107(2021), No.3
  4. Steam Reforming of Methane on Sponge Iron: Influence of Gas Composition on Reaction Rate ISIJ International Vol.61(2020), No.1
  5. Numerical Simulation of Flow, Heat, Solidification, Solute Transfer and Electromagnetic Field for Vertical Mold and Curved Mold of Billet ISIJ International Vol.61(2021), No.3
  6. Structural and Mechanical Characterizations of Top Dross in a Molten Zinc Bath ISIJ International Vol.61(2021), No.3
  7. Dissolution Behavior of Mg and Ca from Dolomite Refractory into Al-killed Molten Steel ISIJ International Advance Publication
  8. Effect of Rare Earth Ce on the Morphology and Distribution of Al2O3 Inclusions in High Strength IF Steel Containing Phosphorus during Continuous Casting and Rolling Process ISIJ International Vol.61(2021), No.3
  9. Deformation Behavior of Longitudinal Surface Flaws in Flat Rolling of Steel Wire ISIJ International Advance Publication
  10. Preface to the Special Issue on “Toward Suppression of Hydrogen Absorption and Hydrogen Embrittlement for Steels” ISIJ International Vol.61(2021), No.4

Search Phrase Ranking

17 Apr. (Last 30 Days)

  1. blast furnace
  2. coke oven gas injection
  3. tetsu-to-hagané
  4. blast furnace permeability
  5. blast furnace productivity
  6. slag
  7. ultrasonic inclusion
  8. continuous casting of electrical steel
  9. deoxygen in liquid iron
  10. electrical steel and continuous casting