成果報告書詳細
管理番号20110000001143
タイトル*平成22年度中間年報 グリーン・サステイナブルケミカルプロセス基盤技術開発 規則性ナノ多孔体精密分離膜部材基盤技術の開発(3)
公開日2011/8/30
報告書年度2010 - 2010
委託先名日立造船株式会社
プロジェクト番号P09010
部署名電子・材料・ナノテクノロジー部
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 ・研究開発項目3-2-1「分離膜製造基盤技術及び分離膜評価技術の開発」 本年度の開発内容としては、早稲田大学/共同実験場所における成膜基礎特性の把握とともに、ゼオライト層を表面に供した多孔質部とその端部となる緻密質部から構成される全てセラミック材質による一体型膜エレメントを用いた長尺膜(1mサイズ)の工業的な製造方法開発を行った。 早稲田大学/共同実験場では、本PJにて共通に使用する支持体(NS-1及びNS-2)を用いて、ゼオライト種:MFI(ZSM-5)に着目した種結晶条件と支持体の関係が成膜状況に及ぼす影響を検討した。
英文要約Hitachi Zosen Corporation has aimed to develop a mono-block type membrane element, which possesses the high dehydration and the high durability performance for the raw materials of IPA and acidic acid with high water content. The element consists of an alumina support tube with solid parts at both ends and a thin film of Zeolite deposited on the outer surface of the tube. The effect of the kinds of both the seed crystal and support tube on the hydrothermal crystal growth processes has been investigated. As a result, it was found that the zeta potential of the seed crystal solution depended on the SiO2/Al2O3 ratio and the cation type of the seed crystal. It was supposed that the zeta potential caused the adhesion degree of the seed crystal on the support tube and gave significant influence on the zeolite structure in secondary growth process. The discussion about the relationship between zeta potential and the morphology of the outer surface of the tube will be done in next step. As for the VP performance of the ZSM-5 membrane with length of 10cm, the permeance was 1.5 x 10-6 mol/(m2 s Pa)and the separation factor was 231 for the raw material with the composition of IPA/H2O = 80wt%/20wt% at the operation temperature of 130°C. For MOR membrane with length of 10cm, the permeance was 4.5 x 10-7 mol/(m2 s Pa) and the separation factor 507 for the raw material with the composition of acetic ascid/H2O = 80wt%/20wt% at the operation temperature of 130°C. From the point of view about the productivity for the commercial membrane element with the length of 1 m, it was studied to reduce the distribution of the temperature and the chemical composition of the reactant in the zeolite synthesis reactor. The swing type reactor improved the distribution of separation factor performance along the long axis of the element by means of keeping the swing frequency suitably. The manufacturing process based on several knowledge mentioned above has been studied and applied for FAU(Y-type) zeolite membrane element with the commercial size. Resultantly, the Y-type Zeolite membrane element with the performance satisfying the project target was successfully developed. It was confirmed the permeance and the separation factor of the membrane element were 2 x 10-6 mol/(m2 s Pa) and 4000 respectively. The design of the membrane module structure was studied by the analogical simulation about the relationship between the membrane permeation model and the heat transfer model. The heat transfer model was useful to understand module efficiency and to reduce calculation time. The new module was also trially designed for both the shell & tube type configuration and the baffle type configuration. The new type module will be installed for the test facilities in the next step.
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