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. 1

  • A Study for Torrefied Characteristics of Torrefied Green Tea Based on Index of the Coal

    pp. 1-7

    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.97.1

    This paper considers the possibility of applying indicators of coal as indicators of torrefied biomass characteristics. Used indicators of coal are fuel ratio which shows the combustion characteristics and coal band (van Krevelen diagram) which shows the degree of coalification. Torrefied biomass heated at different temperature are prepared by using green tea. Their changes of fuel ratio and chemical composition by coal band are considered. The results show the following findings. In the heating temperature from 293 K to 640K, fuel ratio is 0.38 to 2.07. There are the each negative correlation between yield of weight and fuel ratio when fuel ratios are a range of 0.38 to 0.65 and more than 0.65. When fuel ratio is 0.65, there is an inflection point. It is suggested that the volatile components released by thermal decomposition are different on the border line of the inflection point. By the application of coal band,chemical reactions are estimated during torrefaction process. However, it is difficult to decide what kind of reactions is occurring when the release of oxygen by decarboxylation and decarbonylation reaction and the release of hydrogen by demethanization and dehydrogenation reaction occur simultaneously.
  • Study on Solvent Circulation on Co-liquefaction of Woody Biomass and Plastics

    pp. 8-15

    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.97.8

    Because the re-use of the solvent is difficult in solvent circulation type direct liquefaction process of woody biomass, the authors examined the possibility of solvent supply from plastic and the degradative behavior of the initial solvent under the condition of co-liquefaction of woody biomass and plastic. In the present study, Japanese cedar was used as woody biomass, polypropylene, polyethylene, and polystyrene, as model waste plastics and mineral oil as initial solvent. The effect of the reaction temperature on its performance and possibility of solvent circulation have been investigated and the following results were obtained. Because the decomposition of the mineral oil occurs in the reaction temperature higher than 400 °C because of the interaction with the biomass and plastics, that lower than 400 °C is preferable. The decomposition of plastics is promoted by the interaction caused by the co-liquefaction and yield of solvent fraction increases, excluding the polystyrene. Because the decomposition of the mineral oil occurred when the mineral oil was used as the initial solvent, the amount of solvent fraction was not sufficient after the reaction and the solvent circulation was difficult. It is expected that this problem can be solved by adjusting the polar compound fraction in the initial solvent.
    x

    Readers Who Read This Article Also Read

    1. Economic Growth and Air Pollution in the Persian (Arabian) Gulf States: Environmental Kuznets Curve Hypothesis Journal of the Japan Institute of Energy Vol.97(2018), No.1
    2. Table of Contents (in Japanese) Journal of the Japan Institute of Energy Vol.97(2018), No.1
    3. Table of Contents (in English) Journal of the Japan Institute of Energy Vol.96(2017), No.12
  • Economic Growth and Air Pollution in the Persian (Arabian) Gulf States: Environmental Kuznets Curve Hypothesis

    pp. 16-22

    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.97.16

    This paper examines the relationship between economic growth (GDP per capita) and air pollution (CO2 emission per capita) in the Persian Gulf States based on the Environmental Kuznets Curve (EKC) hypothesis using regression analysis. First, the results provide weak support for the EKC hypothesis over the time series of data of 35 years from 1980 to 2014 spanning seven states. Instead, a positive linear relationship is suggested so that growth is associated with increasing emissions. Second, the factors underlying the rejection of the EKC hypothesis include institutional challenges for emission reduction such as (1) political restrictions, (2) soft budget constraints that are less-environmentally-friendly and (3) underdeveloped waste management, Third, weak support for the EKC hypothesis suggests opportunities for Japan to boost its international presence by participating in the Gulf States in decoupling economic growth from CO2 emissions.
    x

    Readers Who Read This Article Also Read

    1. Table of Contents (in English) Journal of the Japan Institute of Energy Vol.96(2017), No.12
    2. Study on Solvent Circulation on Co-liquefaction of Woody Biomass and Plastics Journal of the Japan Institute of Energy Vol.97(2018), No.1
  • Table of Contents (in English)

    p. 9706tce_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.97.9706tce_1

  • Table of Contents (in Japanese)

    p. 9706tcj_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.97.9706tcj_1

    x

    Readers Who Read This Article Also Read

    1. Study on Solvent Circulation on Co-liquefaction of Woody Biomass and Plastics Journal of the Japan Institute of Energy Vol.97(2018), No.1

Article Access Ranking

01 Oct. (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. Recent Progress of Instrumentation Technology for Process Automation in Steel Industry Tetsu-to-Hagané Vol.106(2020), No.9
  3. Accuracy Improvement of the XRD-Rietveld Method for the Quantification of Crystalline Phases in Iron Sintered Ores through the Correction of Micro-absorption Effects ISIJ International Advance Publication
  4. Melting Erosion Failure Mechanism of Tuyere in Blast Furnace ISIJ International Advance Publication
  5. Review on the High-Temperature Thermophysical Properties of Continuous Casting Mold Fluxes for Highly Alloyed Steels Tetsu-to-Hagané Advance Publication
  6. Mechanism of Corrosion Protection at Cut Edge of Zn-11%Al-3%Mg-0.2%Si Coated Steel Sheets ISIJ International Vol.60(2020), No.9
  7. Potential Influences of Impurities on Properties of Recycled Carbon Steel ISIJ International Advance Publication
  8. Evaluation and Prediction of Blast Furnace Status Based on Big Data Platform of Ironmaking and Data Mining ISIJ International Advance Publication
  9. Permeability Coefficient of Oxygen in Molten Slags and Its Mechanisms ISIJ International Vol.60(2020), No.9
  10. Composition Changes of Inclusions by Reaction with Slag and Refractory: A Review ISIJ International Vol.60(2020), No.9

Search Phrase Ranking

01 Oct. (Last 30 Days)

  1. blast furnace
  2. blast furnace permeability
  3. blast furnace productivity
  4. ultrasonic testing bar small diameter
  5. ultrasonic inclusion
  6. isij international
  7. jeong-sik kim
  8. 柳修介
  9. continuous casting of copper alloys
  10. tetsu