GOALI: Effect of Fiber Orientation on Filter Media Performance

摘要CTS-0310429 G。Chase，University of Akron过滤是许多工业过程中的重要操作。 过滤介质控制性能和分离效率。 制造商仅限于操纵几个参数来设计具有所需性能的介质。 三维纤维结构由于难以表征和控制，在非织造布的设计中很少考虑。 我们将开发一种在施工过程中使用电场控制过滤介质三维结构的方法，并利用我们在过滤方面的专业知识来评估过滤介质的性能。这项工作建立在以前和目前的工作，并有很高的成功概率。 在先前的NSF项目中，开发了一种方法来测量相对于z轴（垂直于过滤板平面的轴）的平均纤维角度和角度分布。 在先前的工作中测试的玻璃纤维过滤介质被成形方法限制为平均角度在45至90度的范围内。 液体过滤实验表明，过滤器的性能显着影响的纤维的角度和较小的角度具有更好的渗透性的介质。在当前正在进行的工作中，实验测试过滤介质在从加压空气中聚结和去除亚微米油滴方面的有效性。 这项工作的实验数据表明，在45至90度范围内接近45度的介质角度比具有更大角度的介质性能更好。在这项拟议的工作中要构建的介质将把纤维角度范围扩展到0到45度的范围。 这些介质将在液体过滤和气相聚结实验中进行测试，以将性能与先前未测试的0至45度范围内的纤维角度相关联。 这种相关性将为制造商提供预测过滤器性能的手段，以优化参数，如压降和捕获效率。初步实验表明，玻璃纤维，典型的那些用于非织造介质，是强烈的电场取向。 在这个提议的工作中，片材成形器将构造有电极以产生电场，该电场在片材形成时定向纤维。 一组介质样品将被制成具有相对于z轴测量的在0至45度范围内的平均纤维角的变化。这是一个GOALI提案。 该项目的更广泛影响包括对学生工程师进行颗粒技术培训，并与帕克汉尼芬公司建立强有力的合作，以加强工艺开发和促进技术转让。 这项技术的其他出口是通过阿克伦大学的六家过滤器公司的聚结研究联盟以及密歇根州阿克伦大学州立大学和塔尔萨大学之间关于多相运输现象的联合研究和课程开发的伙伴关系提供的。 作为该项目的一部分，来自帕克汉尼芬的合作PI工程师将作为该项目的工业顾问每年两次访问阿克伦大学，为本科生举办研讨会，并与学生进行问答。 学生和教师将访问帕克Hannifin每年进行实验在帕克的牛津，密歇根州的设施。 研究结果还将链接到AICHE粒子技术论坛的粒子技术教育资源网站（ERPT）。

AbstractCTS-0310429G. Chase, University of AkronFiltration is an important operation in many industrial processes. The filter medium controls the performance and separation efficiency. Manufacturers are limited to only a few parameters to manipulate to design a medium with a desired performance. The three-dimensional fiber structure is seldom considered in design of non-woven media because difficulty in characterization and control. We will develop a method using an electrical field to control the three-dimensional structure of the filter media during construction and use our expertise in filtration to evaluate the filter media performance. This work builds upon prior and current work and has a high probability of success. In a prior NSF project a method was developed to measure the average fiber angle and angle distribution relative to the z-axis (the axis perpendicular to the plane of the filter sheet). The glass fiber filter media tested in the prior work were limited by the formation method to average angles in the range of 45 to 90 degrees. Liquid filtration experiments show that the filter performance is significantly affected by the fiber angle and that media with smaller angles have improved permeabilities. In a current work in progress, filter media are experimentally tested for effectiveness in coalescence and removal of submicron oil drops from pressurized air. Experimental data from this work show that media angles closer to 45 degrees in the 45 to 90 degree range perform better than media with larger angles. The media to be constructed in this proposed work will extend the fiber angle range to the 0 to 45 degree range. These media will be tested in the liquid filtration and gas phase coalescence experiments to correlate the performance to the fiber angles in the 0 to 45 degree range that has not been tested previously. Such correlations will provide manufacturers the means to predict filter performance to optimize parameters such as pressure drop and capture efficiency. Preliminary experiments show that glass fibers, typical of those used in non-woven media, are strongly oriented by electrical fields. In this proposed work sheet formers will be constructed with electrodes to generate electric fields that orient the fibers while the sheets are formed. A set of media samples will be made with a variation of average fiber angles in the 0 to 45 degree range as measured relative to the z-axis. This proposal is a GOALI proposal. The broader impacts of this project include training of student engineers in particle technology and establishing a strong collaboration with the Parker Hannifin Corporation to enhance process development and to promote technology transfer. Additional outlets for this technology are provided through the Coalescence Research Consortium of six filter companies, at the University of Akron, and a partnership in Combined Research and Curriculum Development on multiphase transport phenomena between the University of Akron, Michigan State University, and University of Tulsa. As part of this project the co-PI engineer from Parker Hannifin will visit the University of Akron twice per year as an industrial advisor on the project, to give seminars to undergraduate classes, and to conduct question and answer sessions with students. The students and faculty will visit Parker Hannifin each year to conduct experiments at Parker's Oxford, Michigan facility. The results will also be linked to the AICHE Particle Technology Forums website for Educational Resources for Particle Technology (ERPT).