GOALI: Effect of Fiber Orientation on Filter Media Performance

摘要CTS-0310429G。大通，阿克伦大学过滤是许多工业过程中的重要操作。过滤介质控制着性能和分离效率。制造商仅限于操纵少数几个参数来设计具有所需性能的介质。由于非织造布的表征和控制困难，在非织造布的设计中很少考虑三维纤维结构。我们将开发一种方法，在施工过程中使用电场来控制滤料的三维结构，并利用我们在过滤方面的专业知识来评估滤料的性能。这项工作建立在以前和当前工作的基础上，成功的可能性很高。在先前的NSF项目中，开发了一种方法来测量平均纤维角度和相对于z轴(垂直于滤片平面的轴)的角度分布。以往工作中测试的玻璃纤维滤料受成型方法的限制，平均角度在45度至90度范围内。液体过滤实验表明，纤维夹角对过滤性能有显著影响，夹角越小的滤料渗透率越高。在目前正在进行的一项工作中，对过滤介质在合并和去除加压空气中的亚微米油滴方面的有效性进行了实验测试。这项工作的实验数据表明，在45度到90度范围内，接近45度的媒体角度比角度较大的媒体表现得更好。在这项拟议的工作中要建造的介质将把光纤角度范围扩展到0到45度范围。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0到45度范围内的纤维角度关联起来，这是以前从未测试过的。这种相关性将为制造商提供预测过滤器性能的手段，以优化压降和捕集效率等参数。初步实验表明，用于非织造介质的玻璃纤维在电场的作用下具有很强的取向特性。在这项拟议的工作中，片材成型机将用电极来构造，以产生电场，在片材形成时定向纤维。将制作一组相对于z轴测量的平均纤维角度在0到45度范围内变化的媒体样本。这项提案是一项目标提案。该项目的更广泛影响包括培训粒子技术方面的见习工程师，并与Parker Hannifin公司建立强有力的合作，以加强工艺开发和促进技术转让。阿克伦大学的六家过滤器公司组成的联合研究联盟以及阿克伦大学、密歇根州立大学和塔尔萨大学之间关于多相输送现象的综合研究和课程开发的合作伙伴关系，为这项技术提供了更多的渠道。作为该项目的一部分，Parker Hannifin的合作PI工程师将作为该项目的工业顾问每年访问阿克伦大学两次，为本科生班级举办研讨会，并与学生进行问答环节。学生和教职员工将每年访问帕克·汉尼芬，在帕克位于密歇根州牛津的设施进行实验。结果还将链接到爱车粒子技术论坛网站，以获得粒子技术教育资源(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).