新規CO<sub>2</sub>分離膜の創製と実用化への導入

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  • 甲斐 照彦
    （財）地球環境産業技術研究機構　化学研究グループ

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タイトル別名
  • Development of Novel CO<sub>2</sub> Separation Membranes and Scale–up for Commercialization
  • 特集 日本膜学会膜学研究奨励賞(2010)受賞総説 新規CO2分離膜の創製と実用化への導入
  • トクシュウ ニホン マク ガッカイ マクガク ケンキュウ ショウレイショウ 2010 ジュショウ ソウセツ シンキ CO2 ブンリ マク ノ ソウセイ ト ジツヨウカ エ ノ ドウニュウ

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抄録

Membrane technology is regarded as a promising means to reduce the cost of carbon dioxide capture and storage (CCS) for global warming problem. In this paper, three types of CO2 selective membranes were investigated for separation of CO2/N2 in order to remove CO2 from the flue gas: poly(ethylene glycol) based membranes, Cs–incorporated carbon membranes and dendrimer composite membranes. In development of poly(ethylene glycol) based membranes, crosslinked poly(ethylene glycol) diacrylate membranes were prepared using water as the solvent and UV polymerization. Swelling behavior and separation performance were affected by preparation conditions, especially water concentration in polymerization mixture. In development of Cs–incorporated carbon membranes, the original carbon membrane without Cs had a lower CO2 permeance and CO2/N2 separation factor under humid conditions than it did under dry conditions. On the other hand, Cs-incorporated carbon membranes had a higher CO2 permeance and separation factor under humid conditions. It was suggested that the change in pore size distribution and the pore surface properties played an important role in improving CO2 separation performance under humid conditions. In development of dendrimer composite membranes, a commercial-sized module of PAMAM dendrimer composite membrane, with length 1,100 mm, diameter 35 mm, and membrane area 0.4 m2, was developed using the insitu modification (IM) method. Also, a long–term stability test (a separation experiment continuously running for 1,000 h) was conducted using an 800 mm module and real exhaust gas at a steel manufacturing plant. It was demonstrated the membrane module was stable for at least 1,000 h of exposure to real exhaust gas.

収録刊行物

  • 膜

    膜 35 (4), 194-200, 2010

    日本膜学会

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