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Static analysis of the thermochemical hydrogen production IS process for assessment of the operation parameters and the chemical properties

操作パラメータと物性による熱化学的水素製造ISプロセスの定常状態の解析

笠原 清司  ; 小貫 薫; 野村 幹弘*; 中尾 真一*

Kasahara, Seiji; Onuki, Kaoru; Nomura, Mikihiro*; Nakao, Shinichi*

ISプロセスの定常フローシートについて、操作パラメータと物性の感度解析を行った。熱物質収支をもとに、熱効率,物質流量,交換熱量についてパラメータと物性の評価を行った。最も重要なパラメータは、電解電気透析セルでのHI濃縮濃度とセル内膜のプロトン輸率であった。物性では、HI分解工程入口の組成とHIx溶液の擬共沸組成の影響が大きかった。この評価をもとにパラメータや物性の検討すべき順序を提案した。

Sensitivity analysis of the operation parameters and the chemical properties in the thermochemical hydrogen production IS process (iodine-sulfur process) was carried out for a static flow sheet. These parameters were evaluated by hydrogen production thermal efficiency, mass flow rate or heat exchange based on heat/mass balance. The most important parameters were concentration of HI after the electro-electrodialysis (EED) cell and apparent transport number of proton of the cation exchange membrane in the EED cell. HI concentration operation should be operated carefully because the parameters for optimum thermal efficiency and for optimum flow rate and heat exchange were different. For the chemical properties, composition at the inlet of the HI decomposition procedure and HIx pseudo-azeotropic composition had great effects. HI concentration after the EED cell should be optimized for each composition. Order of priority for assessment of the operation parameters and chemical properties was determined by the evaluation.

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パーセンタイル:42.47

分野:Engineering, Chemical

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