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成果報告書詳細
管理番号20180000000357
タイトル*平成29年度中間年報 水素利用等先導研究開発事業 エネルギーキャリアシステム調査・研究 水素分離膜を用いた脱水素
公開日2018/6/28
報告書年度2017 - 2017
委託先名千代田化工建設株式会社 公益財団法人地球環境産業技術研究機構
プロジェクト番号P14021
部署名次世代電池・水素部
和文要約
英文要約Advancement of Hydrogen Technologies and Utilization Project
Analysis and Development on Hydrogen as an Energy Carrier
Development of dehydrogenation system using inorganic hydrogen separation membrane for organic chemical hydride

Chiyoda Corporation, Research Institute of Innovative Technology for the Earth

Organic chemical hydrides such as methylcyclohexane have high potential as hydrogen carriers for efficient hydrogen storage and transport. For the widespread of energy system with organic chemical hydrides, it is necessary to develop compact and efficient dehydrogenation systems suitable for commercial buildings, office complex, or hydrogen-supplying stations. Membrane reactors with inorganic membranes such as hydrogen selective silica membrane are expected to reduce the volume and increase efficiency of dehydrogenation systems. This program studies technical issues and economic feasibility of membrane reactors with hydrogen separation membranes for developing compact and efficient dehydrogenation systems.

・Studies of wide-area silica membrane tubes for dehydrogenation
We have developed technologies for preparing wide-area silica membrane tubes (500mm-long and 10mm outer diameter) having the more excellent hydrogen separation performance (2.7×10-6 [mol m-2 s-1 Pa-1]) than the previous smaller one.

・Development of membrane modules and membrane reactor
We have developed a prototype module utilizing outsourcing, which is composed of 3 of 500mmL silica membranes. It demonstrated gas-tight joining with the reactor and indicated the possibility of low cost module necessary for commercialization of membrane reactors.
In the study of improvement of the hydrogen separation performance, both the permeance of 3.5×10-6 [mol m-2 s-1 Pa-1] and the ideal selectivity [H2 permeance]/[SF6 permeance] of 64,000 was achieved. These values are more than three times that of the conventional one.
In the study of the small-scale dehydrogenation reactor system, we performed operation and data collection of MCH dehydrogenation reaction using 3 membrane reactors (membrane length 500mmL) and confirmed the large equilibrium shift effect in this membrane reactor. Single tube membrane reactor was also constructed and demonstrated the high conversions under high retentate pressure.

・Feasibility study (FS) of the dehydrogenation process using hydrogen permselective membrane
We have studied the market of dispersed power generator for industry or large scale store. We estimated that the 100kW SOFC generator is desirable for this system.
 We have studied the influence of hydrogen purification method (inorganic membrane and PSA) in the capital cost and the operation cost for 100kW SOFC system. As a result, if the membrane cost can be cut by half from the experimental stage, the capital cost of membrane system is favorable than the PSA system. And, the operation cost of membrane system is also favorable than the cost of the PSA system.
 We have studied the conceptual design of the pilot scale dehydrogenation plants using the hydrogen separation membrane.
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