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. 80 (2001), No. 2

  • Ignition Characteristics of Dimethyl Ether Injected by a D.I. Diesel Nozzle

    pp. 87-96

    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.80.87

    Experiments were performed to clarify the ignition characteristics of dimethyl ether (DME) injected by a D.I. diesel injector into a high-pressure, high-temperature vessel. Ambient air pressure, temperature, oxygen concentration and nozzle valve opening pressure were changed as experimental parameters. The results clarify the differences between the DME and a conventional diesel fuel in the ignition characteristics such as flame luminosity characteristics and ignition delay. A non-luminous flame is observed in the ignition process of the DME spray. In the case of ordinary air (oxygen concentration 21%), the ignition delay for the DME spray is almost the same as the diesel fuel spray under a high ambient pressure, whereas under a low ambient pressure, the ignition delay for the DME spray is shorter than the diesel fuel spray. In the case of low oxygen concentration, the ignition delay for the DME spray is shorter than the diesel fuel spray under high ambient pressure as well as low ambient pressure. The effect of the nozzle valve opening pressure on the ignition delay is very small for the DME spray, whereas the ignition delay for the diesel fuel spray is increased with decrease in the valve opening pressure.
  • Nitrogen Functionality in Model Coals and Its Fate during Pyrolysis

    pp. 97-105

    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.80.97

    In order to study nitrogen release from different nitrogen functionality, two types of model coals with different nitrogen structures have been prepared using cellulose and phenolic nitrogen compounds, 2-hydroxycarbazole and 6-hydroxyquinoline. Carbon and nitrogen structures in the model coals have been analyzed by solid-state 13CNMR, pyrolysis GC-NPD and GC-MS. The 13C-NMR spectra of the model coals very closely resemble those of natural coals with similar carbon content, and the pyrolysis GCNPD analyses show that the model coals have the same nitrogen-containing skeleton as the original nitrogen compounds.
    Addition of Ca and Fe catalysts on the model coals has also been carried out to make clear the effects of the Ca and Fe on nitrogen release from the model coals. Nitrogen release during pyrolysis of the model coals without and with catalyst has been studied in a fixed-bed reactor at 50°C/min up to 1, 000°C. The pyrolysis results show that thermal decomposition behavior of pyrrolic and pyridinic nitrogen in the model coals is similar, and both calcium and iron catalysts are effective on nitrogen removal from the model coals prepared at 200°C. However, the efficiency of nitrogen removal by the catalysts depends on the preparation temperature of the model coals.

Article Access Ranking

30 Sep. (Last 30 Days)

  1. Recent Progress of Instrumentation Technology for Process Automation in Steel Industry Tetsu-to-Hagané Vol.106(2020), No.9
  2. Perspective toward Long-term Global Goal for Carbon Dioxide Mitigation in Steel Industry Tetsu-to-Hagané Vol.105(2019), No.6
  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. 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
  6. Review on the High-Temperature Thermophysical Properties of Continuous Casting Mold Fluxes for Highly Alloyed Steels Tetsu-to-Hagané Advance Publication
  7. Evaluation and Prediction of Blast Furnace Status Based on Big Data Platform of Ironmaking and Data Mining ISIJ International Advance Publication
  8. Potential Influences of Impurities on Properties of Recycled Carbon Steel ISIJ International Advance Publication
  9. Composition Changes of Inclusions by Reaction with Slag and Refractory: A Review ISIJ International Vol.60(2020), No.9
  10. Optimization Analysis of Mechanical Performance of Copper Stave with Special-shaped Tubes in the Blast Furnace Bosh ISIJ International Advance Publication

Search Phrase Ranking

30 Sep. (Last 30 Days)

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