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Reduction of Electric Power Consumption in CO 2 -PSA with Zeolite 13X Adsorbent

Author

Listed:
  • Nobuyuki Shigaki

    (Steel Research Laboratory, JFE Steel Corporation, 1 Kokan-cho, Fukuyama, Hiroshima 721-8510, Japan)

  • Yasuhiro Mogi

    (Steel Research Laboratory, JFE Steel Corporation, 1 Kokan-cho, Fukuyama, Hiroshima 721-8510, Japan)

  • Takashi Haraoka

    (Steel Research Laboratory, JFE Steel Corporation, 1 Kokan-cho, Fukuyama, Hiroshima 721-8510, Japan)

  • Ikuhiro Sumi

    (Steel Research Laboratory, JFE Steel Corporation, 1 Kokan-cho, Fukuyama, Hiroshima 721-8510, Japan)

Abstract

Reduction of CO 2 from waste gases from various industries is now desired worldwide. As a technology for separating CO 2 from mixed gases, Pressure Swing Adsorption (PSA) is one of the practical processes that are widely used at present owing to the simplicity of its gas separation mechanism. In order to reduce the cost of CO 2 separation, a further reduction of the running cost of CO 2 -PSA operation is required. Among all the utilities used in CO 2 -PSA, electric power consumption has the greatest impact, especially in cases where the pressure swing range between gas adsorption and gas desorption is large. Electric power consumption increases significantly when the pressure loss inside the adsorber has reached a non-negligible level. Changing the adsorbent pellet size is a convenient method for reducing pressure loss, but its effect on CO 2 -PSA performance was unclear. Therefore, in this work, the effects of the size of the adsorbent pellets on both the gas adsorption behavior and the electric power consumption in CO 2 -PSA were evaluated experimentally. From the results of laboratory-scale CO 2 -PSA experiments and gas adsorption rate measurements, it was observed that the effect of the pellet size appeared only in the early stage of the gas adsorption step and was not dominant when the cycle time was sufficiently long. Subsequently, pilot-scale CO 2 -PSA experiments with the same CO 2 throughput were also conducted, and as a result, the electric power consumption of a vacuum pump was lowered by 15% in case of using d = 3.0 mm larger adsorbent pellets compared to the results with d = 1.5 mm smaller adsorbent pellets.

Suggested Citation

  • Nobuyuki Shigaki & Yasuhiro Mogi & Takashi Haraoka & Ikuhiro Sumi, 2018. "Reduction of Electric Power Consumption in CO 2 -PSA with Zeolite 13X Adsorbent," Energies, MDPI, vol. 11(4), pages 1-21, April.
    • Handle: RePEc:gam:jeners:v:11:y:2018:i:4:p:900-:d:140594
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    References listed on IDEAS

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    1. Nobuyuki Shigaki & Sumito Ozawa & Ikuhiro Sumi, 2017. "Effect of Gas Velocity Distribution on Heat Recovery Process in Packed Bed of Plate-Shaped Slag," Energies, MDPI, vol. 10(6), pages 1-20, May.
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    Cited by:

    1. Wang, Shule & Yang, Hanmin & Shi, Ziyi & Zaini, Ilman Nuran & Wen, Yuming & Jiang, Jianchun & Jönsson, Pär Göran & Yang, Weihong, 2022. "Renewable hydrogen production from the organic fraction of municipal solid waste through a novel carbon-negative process concept," Energy, Elsevier, vol. 252(C).

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