成果報告書詳細
管理番号20130000000981
タイトル*平成22年度中間年報 最先端PG(Mega-ton Water System)高効率・大型分離膜エレメント・モジュール 高効率・大型RO膜中空糸型モジュール
公開日2014/1/10
報告書年度2010 - 2010
委託先名東洋紡績株式会社
プロジェクト番号P09025
部署名環境部
和文要約和文要約等以下本編抜粋
大型モジュール動向およびコストメリット調査と市場動向・技術調査
海外および、国内シンポジウムの参加、聴講等を通して情報入手を行なった。現時点での大型膜モジュールのサイズは16インチサイズが主流となっており、18インチサイズもみられるがごくわずか(1 社)であった。また、コストメリットに関しては、文献資料からもスパイラル型膜の場合、16インチサイズを超えると、大型化によるメリットであるコスト低減率の変化が小さくなる報告がなされている。海水淡水化の場合、RO装置のコストに占める配管、バルブ等の割合が大きく、膜モジュールの大型化はこのコスト低減の影響が大きいと考えると、上記の傾向は中空糸型モジュールにおいても同様と推察された。圧力容器に関しては、海水淡水化レベルの高圧の圧力容器の実績を持っている圧力容器メーカーは少なく、低圧容器にとどまっているメーカーも多い。既存の16インチサイズの市場動向および、さらに大口径化への技術動向について、今後も継続調査を進めて行く。
英文要約1) Market information and technical information analysis: Through the attending of international and national symposia, we were gathered information of current situation and cost benefit for large-scale module. At present, the majority of the large scale module is 16 inch diameter size, and maximum size of 18 inch diameter module is the minority. In case of spiral -wound type module, it has been reported that the benefit of cost reduction decreases as module size gets larger than 16 inch diameter. And there are still few manufacturers for commercialized high pressure type of pressure vessel using seawater desalination to drinking water system. 2) Large-scale module for reverse osmosis membrane element: a) study of basic module configuration: a)-1 analysis of stress for constituent parts of RO module: In accordance with large scaling module, constituent parts of RO module were required high strength. Therefore, we started to study analysis of stress for distribution feed pipe. Material property factor of distribution pipe that made by fiber-reinforced composite were decided to execute mechanical strength test. With anisotropic property using 1/2 solid component considered symmetry, analysis of material property was carried out by conventional analysis software Abaqus 6.10. We compared the actual mechanical strength data with the analytical data using this model. We confirmed that the analytical solution was well-fitting with the actual data. b) estimation of basic performance and simulation for large scale RO performance: b)-1 RO module performance estimation: We estimated large scale module performance to simulate mass transfer phenomenon of internal flow of RO module and bore side pressure and packing density of hollow fiber membrane. To improve hollow fiber arrangement, it was estimated higher efficiency performance of enhanced RO module. We obtained a guideline that target permeability performance would be an extension of this hollow fiber arrangement. b)-2 flow characterization analysis of internal flow of RO module: To analyze internal flow of hollow fiber RO module, we are approaching to make structural model showed aggregate of hollow fiber with simulation software of conventional Computational Fluid Dynamics. 3) Manufacturing technology of large scale RO module: a) study of basic manufacturing technology: Based on our estimation results for large scale RO module performance, we manufactured special equipment to make crossed hollow fiber arrangement for large scale module. With the special hollow fiber arrangement equipment, we confirmed that large diameter element as 16 inch diameter could be manufactured to study optimization condition such as travel resistance and winding resistance of fiber, and shape correction condition.
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