成果報告書詳細
管理番号20120000000026
タイトル*平成22年度中間年報 水素製造・輸送・貯蔵システム等技術開発 水素製造機器要素技術に関する研究開発 CO2膜分離法を用いた水素製造装置改質システムの開発
公開日2012/2/17
報告書年度2010 - 2010
委託先名株式会社ルネッサンス・エナジー・リサーチ 株式会社ミクニ 国立大学法人神戸大学 国立大学法人京都大学 独立行政法人産業技術総合研究所
プロジェクト番号P08003
部署名新エネルギー部
和文要約和文要約等以下本編抜粋:1. 研究開発の内容及び成果等 現在開発中の水素ステーション用改質システムでは、水蒸気改質により炭化水素を水素、COに改質し、さらにCO変成反応を用いてCOを水素に変換することにより水素を製造している。
その後、燃料電池自動車用の高純度水素を造る為、PSA(プレッシャー・スイング・アドソープション)により水素を精製している。しかし、これらの技術は基本的に大規模水素製造プロセスとして開発されたものであり、天然ガスや石油からオンサイトで水素を製造、供給する水素ステーションにおいては、システムの低コスト化、コンパクト化、高効率化が技術開発の課題となっている。
これら課題を解決するために、本プロジェクトでは、選択的、効率的にCO2の分離が可能なCO2選択透過膜と、高性能なCO変成触媒を組み合わせたCO2分離型メンブレンリアクターの開発を行っている。
英文要約Title:Development of Technologies for Hydrogen Production, Delivery, and Storage Systems. Development of Elemental Technologies for Hydrogen Production Components. Development of Advanced Reforming System for H2 Station Using CO2 Selective Membrane (FY2008-FY2012) FY2010 Annual Report

In this project, for the purpose of making hydrogen stations more efficient, compact and low in cost, we are carrying out the development of a membrane reactor, which combines CO2 selective membranes and CO shift catalysts. In the former project, we successfully developed novel facilitated transport membranes with excellent performances exceeding our target values, i.e. CO2 permeance of 1x10-4mol/(m2skPa) and CO2/H2 selectivity of 100 at 160 degree Celsius. In 2008, we succeeded in developing a heat-resistant membranes which have CO2 permeance of 1x10-4mol/(m2skPa) and CO2/H2 selectivity of 200 at 180 degree Celsius. Last year, we succeeded in developing of heat resistant membrane with long term stability at 180 degree Celsius. However, we observed decline in CO2/H2 selectivity at longer operation period than 400 hours. Such decline would make hydrogen station less efficient. This year, we tried to improve CO2/H2 selectivity to achieve the selectivity of more than 200 and accomplished CO2/H2 selectivity of more than 800 and CO2 permeance of 1x10-4mol/(m2skPa) at 160 degree Celsius.
As for the development of CO shift catalysts, in the former project, we developed a precious metal-based CO shift catalysts which have high activity for the CO shift reaction at low temperatures and are applicable to membrane reactors. Last year, we improved resistance against CO2 by adding another metal to standard Cu-ZnO-Al2O3 catalyst. In addition, we succeeded in reducing precious metal content to one-third of the precious metal content of original catalysts. This year, based on past results and experiences that we acquired, we have kept improving CO shift catalysts. As a result, we achieved better results at 160 degree Celsius with newly developed Cupper based catalysts than we obtained with conventional Cupper based catalysts at 180 degree Celsius.
As for the study of total system of hydrogen station, In 2008, we confirmed that using membrane reactor, we could make the hydrogen station compact and also reduce the driving cost of the hydrogen station remarkably. Last year, we updated PSA design using the latest absorbents for PSA and improved design of membrane reactor based on the latest PSA study. This year, we kept trying to optimize the design of membrane reactor and the total system and we made simulation studies of membrane reactor to lower CO concentration. As a result, we found further possibility of lowering CO concentration that enable to make PSA size more compact.
ダウンロード成果報告書データベース(ユーザ登録必須)から、ダウンロードしてください。

▲トップに戻る