ピンボール 木の豆ミックス2

Journal of the Hydrogen Energy Systems Society of Japan
Online ISSN : 2436-5599
Print ISSN : 1341-6995
Volume 34, Issue 1
Displaying 1-14 of 14 articles from this issue
  • [in Japanese]
    2009 Volume 34 Issue 1 Pages 1-2
    Published: 2009
    Released on J-STAGE: July 21, 2022
    DOI
    RESEARCH REPORT / TECHNICAL REPORT FREE ACCESS
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  • Makoto Akai, Masahiro Nishio
    2009 Volume 34 Issue 1 Pages 3-10
    Published: 2009
    Released on J-STAGE: July 21, 2022
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    RESEARCH REPORT / TECHNICAL REPORT FREE ACCESS

    Carbon Dioxide Capture and storage (CCS) is a process consisting of the separation of CO2 from industrial and energy related sources, transport to a storage site and long-term isolation from the atmosphere. Recently, this technology is expected to play an important role for prevention of global warming. For example, G8 Hokkaido Toyako summit Leaders Declaration said, ‘We strongly support the launching of 20 large-scale CCS demonstration projects globally by 2010, taking into account various national circumstances, with a view to beginning broad deployment of CCS by 2020’. In this paper, we would like to introduce the outline of the CCS technology, quoted from ‘IPCC special report on Carbon Dioxide Capture and Storage’ and the recent direction aimed for promotion of CCS.

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  • Shingo Kazama, Yuichi Fujioka
    2009 Volume 34 Issue 1 Pages 11-14
    Published: 2009
    Released on J-STAGE: July 21, 2022
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    Hydrogen production from fossil resources without CO2 emission will take on an important new role for the continuous and stable supply of hydrogen. CO2 capture and storage (CCS) is a promising way of mitigating CO2 emission during the hydrogen production from fossil resources. To ensure CCS, new CO2 capture technology is of great importance. Membrane separation is a promising candidate method of CO2 capture from a pressurized gas stream such as water gas shift reaction product containing CO2 and H2. RITE has developed novel membranes based on PA MAM dendrimer having a good CO2/H2 selectivity which would not be attained by conventional membranes. New type of polymeric membrane is also studied as a membrane reactor for CH4 reforming.

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  • Naokazu KIMURA
    2009 Volume 34 Issue 1 Pages 15-20
    Published: 2009
    Released on J-STAGE: July 21, 2022
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    To reduce greenhouse gas emissions in particular, the EAGLE (coal Energy Application for Gas, Liquid and Electricity) pilot plant test of the coal processing amount 150tons/day has been executed as a joint research of J-POWER (Electric Power Development Co., Ltd.) and NEDO (New Energy and Industrial Technology Development Organization). Coal gasification is a key technology of a super-high efficiency power generation system, such as IGCC or IGFC. In addition, this system is suitable for CCS (carbon capture and storage) technology. So from 2008 we installed a carbon capture facility for EAGLE. This paper describes the development status of the EAGLE technology and the carbon capture facility based on more than 6,500 hours of EAGLE operation and 24 7 hours of the carbon capture facility operation.

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  • Mitsuo TOYOTA, Masanori DAIRAKU
    2009 Volume 34 Issue 1 Pages 21-26
    Published: 2009
    Released on J-STAGE: July 21, 2022
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    MCFCs are characterized by a high CO2 concentration in anode outlet gas after the cell electrochemical reaction, by taking advantage of this high concentration, CO2 can be captured efficiently. To reduce CO2 emission from thermal power stations, we have been developing CO2 capture system using MCFC since 2004. The problem of this system is the corrosion at the cathode current collector caused by sulfur oxides (SOx) included in coal-fired flue gas. In 2005, we carried out the test operation of 10kW-class MCFC with supplying coal-fired flue gas to the cathode inlet, and we have verified to be able to continue the operation with desulfuring SOx to less than 1ppm by wet limestone-gypsum process. Reflecting the results of 10kW-class test, in 2007, we carried out the test operation of 50kW-class MCFC and CO2 capture facility, using PSA (pressure swing adsorption) process, with supplying coal-fired flue gas to the cathode inlet and capturing CO2 from anode outlet gas. This report is the introduction of the results of these test operations.

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  • Masakazu Ikeda
    2009 Volume 34 Issue 1 Pages 27-32
    Published: 2009
    Released on J-STAGE: July 21, 2022
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    Hydrogen is highly expected to be a key material to solve environmental problems such as global warming. However, we have to produce almost all hydrogen from fossil fuels because renewable energies have not become practical energy sources, yet. When we produce hydrogen from fossil fuels, carbon dioxide should be produced as a by-product. If we capture and storage such carbon dioxide, we will be able to produce hydrogen without emitting carbon dioxide into atmosphere.

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  • Takashi OHSUMI
    2009 Volume 34 Issue 1 Pages 33-37
    Published: 2009
    Released on J-STAGE: July 21, 2022
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    CO2 storage in aquifer is an established technology, but we may feel that the acceptance of the technology could be the key. Even high cost mitigation options such as solar voltaic or wind energy for the reduction of CO2 emission have some difficulties in their public acceptance, when their scale becomes large. If the storage site is near to the densely-populated area, the key to the acceptance is the occupancy area of the energy system. In this point of view, the terrestrial storage option as solid-CO2 near capture plants is revisited.

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  • Masahiko Ozaki
    2009 Volume 34 Issue 1 Pages 38-44
    Published: 2009
    Released on J-STAGE: July 21, 2022
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    CO2 ocean storage is one of CCS schemes. However, its role on the mitigation of atmospheric CO2 would be some different from geological storage, because a part of CO2 injected into deep ocean would become released to the air after several hundred years due to the global carbon circulation. In this paper, the equilibrium conditions in the low-carbon ages and the carbon-free ages are separately defined and the possible contribution of ocean storage in the low-carbon ages is pointed, especially in the case of overshoot scenarios in the near future. In the next, a result of case study is presented in order to show the technological potential of the moving ship type of ocean storage for example. In this case study, 50 million ton CO2 per year is assumed released in a deep water area of 1.03km by 333km. And the feasibility of engineering, the durability of the project for 30 years, the impact assessment on marine organization, etc are briefly presented.

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  • Masahiro INOUE, Hisayoshi TSUKIKAWA, Hiroshi KANAYAMA, Kazuo MATSUURA
    2009 Volume 34 Issue 1 Pages 45-56
    Published: 2009
    Released on J-STAGE: July 21, 2022
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    Experimental studies using models to know the behavior of the diffusion of hydrogen in a duct and under a ceiling were carried out. Two different models were used for the experiments. One of the models was a duct 5m in length with square cross-section 0.2m in one side. The duct was ventilated by a fan set on the end of the duct and the air speed was changed from 0.2 to 2.0m/s. Hydrogen was supplied from its ceiling with the flow rate from 5 to 15L/min. It was found that the diffusion of hydrogen in the ventilated air strongly depends on the air speed. In addition, hydrogen moved not only downwind direction but also upwind direction when the air speed was slow.

    Another model was an octagonal plate about 2 m diagonal length to simulate a ceiling of a room to know the optimum location of hydrogen sensors in a room. The hydrogen concentrations immediately under the ceiling were considerably higher than that of 8cm under the ceiling when the distance between the ceiling and the outlet of hydrogen is small. It is preferable to set a hydrogen sensor as near as possible to the ceiling from the results of the experiment.

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  • 2009 Volume 34 Issue 1 Pages 63-66
    Published: 2009
    Released on J-STAGE: July 21, 2022
    DOI
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  • 2009 Volume 34 Issue 1 Pages 67-69
    Published: 2009
    Released on J-STAGE: July 21, 2022
    DOI
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  • 2009 Volume 34 Issue 1 Pages 70-72
    Published: 2009
    Released on J-STAGE: July 21, 2022
    DOI
    RESEARCH REPORT / TECHNICAL REPORT FREE ACCESS
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  • 2009 Volume 34 Issue 1 Pages 73-76
    Published: 2009
    Released on J-STAGE: July 21, 2022
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