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Blast Furnace

The Experts below are selected from a list of 324 Experts worldwide ranked by ideXlab platform

M. Asanuma – 1st expert on this subject based on the ideXlab platform

  • Recycling of waste plastics in Blast Furnace
    Nihon Enerugi Gakkaishi Journal of the Japan Institute of Energy, 2004
    Co-Authors: M. Asanuma, Tatsuro Ariyama

    Abstract:

    A review covers the use of waste plastics as a substitute reducing agent for coke and pulverized coal in Blast Furnaces. In Blast Furnace, waste plastics can be used with high efficiency due to the function of combustion and gasification of Blast Furnace. Waste plastics injection into the Blast Furnace is a favorable way to realize feedstock recycling of waste plastics and to solve environmental problems.

  • Development of Waste Plastics Injection Process in Blast Furnace
    ISIJ International, 2000
    Co-Authors: M. Asanuma, Tatsuro Ariyama, Michitaka Sato, Ryota Murai, Toshiharu Nonaka

    Abstract:

    At Keihin No. 1 Blast Furnace, waste plastics recycling system was installed in Oct. 1996. Before the installation of that system, the behavior of waste plastics injected into the Blast Furnace has been studied with the raceway hot model and the commercial Blast Furnace so as to investigate the possibility of effective waste plastics utilization in the Blast Furnace. From the observation of plastics particle injected into the raceway of Blast Furnace, it was estimated that combustibility of coarse plastics was much different from that of pulverized coal. The combustion point of coarse plastics located to deep domain in raceway compared with that of pulverized coal. Although C1-C4 hydrocarbons due to the decomposition of plastics was detected in in-Furnace, the decomposition products of plastics in the Blast Furnace top gas and dust were the same as that of pulverized coal injection. The preparation method of plastics had an influence on the combustion and gasification behavior in the raceway. The coarse plastics gave high combustion and gasification efficiency compared with fine plastics and pulverized coal, and CO2 gasification rate of unburnt char derived from waste plastics was much higher than that of pulverized coal. Thus, it was concluded that coarse waste plastics could be effectively utilized as a reducing agent in the Blast Furnace. On the basis of above results, the waste plastics recycling system was designed.

  • Recycling of plastic waste in Blast Furnace
    Nihon Enerugi Gakkaishi Journal of the Japan Institute of Energy, 1998
    Co-Authors: M. Asanuma, Tatsuro Ariyama, Yutaka Yamada, Mitsuhiro Fujii, Iwao Okochi, Takashi Sumigama, Masanori Tokuda

    Abstract:

    The recycling of waste plastics in the Blast Furnace has been investigated with the test Furnace and the commercial Blast Furnace. From the results of these experiments, it was found that the combustion and gasification behavior of waste plastics injected into the raceway of the Blast Furnace was much different from those of pulverized coal. Pulverized coal injected into raceway was consumed in the combustion zone of the raceway and converted into CO2 and H2O rapidly. On the other hand, waste plastics was mainly converted into CO and H2 by gasification with CO2 generated in the combustion zone of the raceway. Combustion and gasification efficiency of waste plastics was much higher than that of pulverized coal in spite of large particle. Waste plastics like -10 mm particle can be effectively gasified due to the circulation effect of coarse particle in the raceway. Recycling efficiency of waste plastics in the Blast Furnace was estimated to be 76%. It is considered that waste plastics injection into the Blast Furnace is a favorable way to realize material recycling of waste plastics and to solve environmental issue.

Tatsuro Ariyama – 2nd expert on this subject based on the ideXlab platform

  • Recycling of waste plastics in Blast Furnace
    Nihon Enerugi Gakkaishi Journal of the Japan Institute of Energy, 2004
    Co-Authors: M. Asanuma, Tatsuro Ariyama

    Abstract:

    A review covers the use of waste plastics as a substitute reducing agent for coke and pulverized coal in Blast Furnaces. In Blast Furnace, waste plastics can be used with high efficiency due to the function of combustion and gasification of Blast Furnace. Waste plastics injection into the Blast Furnace is a favorable way to realize feedstock recycling of waste plastics and to solve environmental problems.

  • Development of Waste Plastics Injection Process in Blast Furnace
    ISIJ International, 2000
    Co-Authors: M. Asanuma, Tatsuro Ariyama, Michitaka Sato, Ryota Murai, Toshiharu Nonaka

    Abstract:

    At Keihin No. 1 Blast Furnace, waste plastics recycling system was installed in Oct. 1996. Before the installation of that system, the behavior of waste plastics injected into the Blast Furnace has been studied with the raceway hot model and the commercial Blast Furnace so as to investigate the possibility of effective waste plastics utilization in the Blast Furnace. From the observation of plastics particle injected into the raceway of Blast Furnace, it was estimated that combustibility of coarse plastics was much different from that of pulverized coal. The combustion point of coarse plastics located to deep domain in raceway compared with that of pulverized coal. Although C1-C4 hydrocarbons due to the decomposition of plastics was detected in in-Furnace, the decomposition products of plastics in the Blast Furnace top gas and dust were the same as that of pulverized coal injection. The preparation method of plastics had an influence on the combustion and gasification behavior in the raceway. The coarse plastics gave high combustion and gasification efficiency compared with fine plastics and pulverized coal, and CO2 gasification rate of unburnt char derived from waste plastics was much higher than that of pulverized coal. Thus, it was concluded that coarse waste plastics could be effectively utilized as a reducing agent in the Blast Furnace. On the basis of above results, the waste plastics recycling system was designed.

  • Recycling of plastic waste in Blast Furnace
    Nihon Enerugi Gakkaishi Journal of the Japan Institute of Energy, 1998
    Co-Authors: M. Asanuma, Tatsuro Ariyama, Yutaka Yamada, Mitsuhiro Fujii, Iwao Okochi, Takashi Sumigama, Masanori Tokuda

    Abstract:

    The recycling of waste plastics in the Blast Furnace has been investigated with the test Furnace and the commercial Blast Furnace. From the results of these experiments, it was found that the combustion and gasification behavior of waste plastics injected into the raceway of the Blast Furnace was much different from those of pulverized coal. Pulverized coal injected into raceway was consumed in the combustion zone of the raceway and converted into CO2 and H2O rapidly. On the other hand, waste plastics was mainly converted into CO and H2 by gasification with CO2 generated in the combustion zone of the raceway. Combustion and gasification efficiency of waste plastics was much higher than that of pulverized coal in spite of large particle. Waste plastics like -10 mm particle can be effectively gasified due to the circulation effect of coarse particle in the raceway. Recycling efficiency of waste plastics in the Blast Furnace was estimated to be 76%. It is considered that waste plastics injection into the Blast Furnace is a favorable way to realize material recycling of waste plastics and to solve environmental issue.

Masanori Tokuda – 3rd expert on this subject based on the ideXlab platform

  • Recycling of plastic waste in Blast Furnace
    Nihon Enerugi Gakkaishi Journal of the Japan Institute of Energy, 1998
    Co-Authors: M. Asanuma, Tatsuro Ariyama, Yutaka Yamada, Mitsuhiro Fujii, Iwao Okochi, Takashi Sumigama, Masanori Tokuda

    Abstract:

    The recycling of waste plastics in the Blast Furnace has been investigated with the test Furnace and the commercial Blast Furnace. From the results of these experiments, it was found that the combustion and gasification behavior of waste plastics injected into the raceway of the Blast Furnace was much different from those of pulverized coal. Pulverized coal injected into raceway was consumed in the combustion zone of the raceway and converted into CO2 and H2O rapidly. On the other hand, waste plastics was mainly converted into CO and H2 by gasification with CO2 generated in the combustion zone of the raceway. Combustion and gasification efficiency of waste plastics was much higher than that of pulverized coal in spite of large particle. Waste plastics like -10 mm particle can be effectively gasified due to the circulation effect of coarse particle in the raceway. Recycling efficiency of waste plastics in the Blast Furnace was estimated to be 76%. It is considered that waste plastics injection into the Blast Furnace is a favorable way to realize material recycling of waste plastics and to solve environmental issue.