Steel Science Portal

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. 96 (2017), No. 4

  • Effect of Meso-scale Pore Structure on Coke Strength

    Yasuhiro SAITO, Tetsuya KANAI, Yoshiaki YAMAZAKI, Yohsuke MATSUSHITA, Hideyuki AOKI, Seiji NOMURA

    pp. 93-101

    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.96.93

    Abstract

    To explore the factors that affect coke strength in the meso-scale pore structure of coke, we investigated the relationship between the strength and meso-scale pore structure of the polished surface of coke sample. Coke was fractured using diametral-compression tests, and the tensile strength of coke was measured. Furthermore, we observed the polished surface of coke and obtained combined images with a size of 10 mm × 10 mm. The size and roundness of the pores were evaluated by image analysis. The pores were classified according to the pore size, and the strength of coke with many pores with a diameter of more than 1000 µm was indicated to be low. Moreover, the roundness of pores with a diameter of more than 1000 µm was low. Therefore, pores with diameter of more than 1000 µm and low roundness are considered to greatly affect the strength of coke in a meso-scale structure.

    Recommended Articles: Economic Evaluation of Wastewater Treatment System Based on Recovery Characteristics of Oil and Suspended Solids by Filtration [ View more ]

    x

    Readers Who Read This Article Also Read

    1. Economic Evaluation of Wastewater Treatment System Based on Recovery Characteristics of Oil and Suspended Solids by Filtration Journal of the Japan Institute of Energy Vol.96(2017), No.4
    2. Table of Contents (in Japanese) Journal of the Japan Institute of Energy Vol.96(2017), No.7
    3. Dynamic Wettability of Liquids on Gasified Metallurgical Cokes ISIJ International Vol.57(2017), No.7

  • Economic Evaluation of Wastewater Treatment System Based on Recovery Characteristics of Oil and Suspended Solids by Filtration

    Eriko ANKYU, Toshihiko OTSUKA, Ryozo NOGUCHI

    pp. 102-111

    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.96.102

    Abstract

    Filtration experiments were conducted using artificial wastewater at 20 °C and 60 °C to explain the relationship between the separation ability of oil-water separation equipment and the recovery rate of suspended solids (SS) recovery equipment for oil concentrations. Based on the characteristics of oil and SS explained by the filtration experiments, an economic evaluation method for a wastewater treatment system was proposed for two cases: using oil-water separation equipment without SS recovery equipment (single use) and using oil-water separation equipment with SS recovery equipment (combination use) using Separative Work Unit (SWU). The separation ability of oil-water separation equipment could determine the required recovery rate of SS recovery equipment. The SWU for combination use at 20 °C and 60 °C was higher than the SWU for single use. The SWU for combination use at 60 °C was higher than that at 20 °C. At 60 °C, combination use increased the SWU by 562 JPY/day (treatment amount 3,000 L/day) compared to single use, at 45% separation ability of the oil-water separation equipment according to the results of our filtration experiments.

    Recommended Articles: Effect of Meso-scale Pore Structure on Coke Strength [ View more ]

    x

    Readers Who Read This Article Also Read

    1. Effect of Meso-scale Pore Structure on Coke Strength Journal of the Japan Institute of Energy Vol.96(2017), No.4
    2. Optimization of Coke Mixed Charging Based on Discrete Element Method Tetsu-to-Hagané Vol.103(2017), No.2

  • A Study of Home Energy Management Systems for Northern Houses

    Atsuhiro KAWAMURA, Hiroki HAYASHI, Taro MORI, Hidekazu KAJIWARA, Kazunori CHIDA, Takafumi NOGUCHI, Makoto ARAI, Hiroshi UCHIUMI

    pp. 112-120

    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.96.112

    Abstract

    The purpose of this study is to construct a home energy management system (HEMS) that uses information and communication technologies (ICT) and solar energy more effectively to reduce energy consumption without sacrificing comfort in houses at higher northern latitudes, i.e., in colder climates. The two core technologies of this system are a room environment control system that regulates temperature and illuminance only in the vicinity of the occupants by detecting them and a solar heating system that uses a ventilation heater that warms fresh air via stored solar energy. The aim of the former is to reduce energy consumption by not raising the average room temperature and illuminance. The aim of the latter is to improve the total efficiency of the solar heating system by increasing the efficiency of the input and output of the storage tank.

  • Production of Hydrocarbons in Fischer-Tropsch Synthesis with Cobalt-based Catalyst: Investigations of Primary Kerosene Yield and Carbon Mass Balance

    Kazuhiro KUMABE, Yuichiro KANAMORI, Li-Ming HAN, Hiroshi MORITOMI, Shinji KAMBARA, Tatsuya HASEGAWA

    pp. 121-127

    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.96.121

    Abstract

    The Fischer-Tropsch synthesis (FTS) of syngas (34 vol% H2, 16 vol% CO, and 50 vol% N2) was carried out using cobalt-based catalysts in order to produce hydrocarbons (HCs) equivalent to kerosene, which is used as an alternative aviation fuel. The FTS had been conducted for a duration of 5 h in a downdraft continuous-flow-type fixed-bed reactor under a temperature of 230 °C and a pressure of 3.0 MPa. The effects of space velocity (W/F) and the chelator on the FTS were studied by focusing on primary kerosene yield and the carbon mass balance. In HCs with carbon numbers more than 6, the selectivity of CO to the HCs with carbon numbers of 11-14 equivalent to kerosene was found to be the second highest, the highest being its selectivity to HCs with carbon numbers of 6-10 equivalent to gasoline. The amount of primary kerosene produced was maximum under the W/F of 9 g h/mol. The addition of a chelator to a cobalt-based catalyst decreased the selectivity to CO2. In the FTS with cobalt-based catalysts with the chelator of CyDTA, the selectivity of CO to the HCs with carbon numbers of 11-14 was found to be the highest.

  • Table of Contents (in English)

    p. 9604tce_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.96.9604tce_1

    Recommended Articles: Influence of Morphology of Silica-Alumina Composites on Their Activity for Hydrolytic Dehydrogenation of Ammonia Borane [ View more ]

    x

    Readers Who Read This Article Also Read

    1. Influence of Morphology of Silica-Alumina Composites on Their Activity for Hydrolytic Dehydrogenation of Ammonia Borane Journal of the Japan Institute of Energy Vol.95(2016), No.6

  • Table of Contents (in Japanese)

    p. 9604tcj_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.96.9604tcj_1

  • © 2017 The Japan Institute of Energy

Article Access Ranking

22 Feb. (Last 30 Days)

  1. Thermodynamic Modeling of the SFCA Phase Ca2(Fe, Ca)6(Fe, Al, Si)6O20 Tetsu-to-Hagané Advance Publication
  2. Effect of Nut Coke Addition on Physicochemical Behaviour of Pellet Bed in Ironmaking Blast Furnace ISIJ International Advance Publication
  3. Thermal Driving Demonstration of Li4SiO4/CO2/Zeolite Thermochemical Energy Storage System for Efficient High-Temperature Heat Utilizations ISIJ International Advance Publication
  4. Evolution of Blast Furnace Process toward Reductant Flexibility and Carbon Dioxide Mitigation in Steel Works ISIJ International Vol.56(2016), No.10
  5. Effects of Sulfur and Titanium Interaction in Molten Pig Iron on Erosion of Carbon Brick ISIJ International Vol.59(2019), No.1
  6. Chemical Structure of Si–O in Silica Fume from Ferrosilicon Production and Its Reactivity in Alkali Dissolution ISIJ International Advance Publication
  7. Viscosity Property and Melt Structure of CaO–MgO–SiO2–Al2O3–FeO Slag System ISIJ International Vol.59(2019), No.1
  8. Preparation of High-Carbon Metallic Briquette for Blast Furnace Application ISIJ International Vol.59(2019), No.1
  9. Preface to the Special Issue “Heterogeneous Structure Control: Towards Innovative Development of Metallic Structural Materials” Tetsu-to-Hagané Vol.105(2019), No.2
  10. Effects of Impurities and Processing Conditions in Al–1%Mn Alloys on the Formation of Thermally Stabilized Substructures MATERIALS TRANSACTIONS Vol.59(2018), No.11

Search Phrase Ranking

22 Feb. (Last 30 Days)

  1. blast furnace
  2. blast furnace productivity
  3. blast furnace permeability
  4. 鉄と鋼
  5. clean steel
  6. hydrogen brittle
  7. mold flux
  8. takayuki maeda
  9. mill setup
  10. mill-setup