一种过滤器滤芯

本实用新型属于一种过滤器的部件，具体涉及一种过滤器滤芯。它包括中心管，位于中心管外部的外护圈，中心管与外护圈之间设有过滤层，中心管与外护圈的上端部设有上封端盖，下端部设有下封端盖，在上封端盖与下封端盖之间设有拉杆。过滤层采用核级玻璃纤维滤材，并呈褶叠状。     

2006年《玻璃纤维》总目次

《卜一一一友术与瘫穷1一01一玻璃电熔窑Scott供电时内部等效电流分析吴嘉培1一04一核级玻璃纤维滤材的研制夏山鹰，王志明，林文新1一09一聚合物光纤照明用灯头设计陈强，江源，潘贤1一15一玄武岩纤维物化性能的研究梁磊，梁玉舫，李谨1一20一环保节能型玻璃球窑技术唐秀凤1一     

玻璃纤维针剌毡

过滤用玻璃纤维针刺毡是七十年代诞生并投入使用的一种新型结构的玻璃纤维过滤材料。由于它集中了玻璃纤维和体型结构滤材各自的优点,在与其它滤材的竟争中,占有一定的优势。近年来国外使用情况表明,它是一种很有发展前途的耐高温过滤材料。过里根据查阅的部分资料对它作一简单介绍。     

静电纺丝纤维滤材表征及其气液过滤性能

以聚丙烯腈与二甲基甲酰胺为原料配制纺丝溶液,采用静电纺丝技术制备玻璃纤维/聚丙烯腈纤维/玻璃纤维三层复合滤材,研究了纺丝溶液浓度与纺丝电压等参数对纤维形貌及尺寸的影响,分析了复合滤材的过滤性能. 结果表明,控制不同纺丝溶液浓度可得形貌不同的纤维,且溶液浓度越大纤维尺寸越大;纺丝电压对纤维形貌的影响较小,但增加纺丝电压使静电纺纤维层的孔径减小. 相比玻璃纤维滤材,复合滤材过滤效率明显提升,稳态效率最大可提升21%,最易穿透粒径效率最大可提升39%,但复合滤材孔径较小时,过程压降增加了一段跳跃阶段,纳米纤维层表面形成液膜,使复合滤材稳态压降升高.     

纺黏玻璃纤维非织造布滤材性能的测试与分析

测试了纺黏玻璃纤维非织滤材等几种过滤材料的性能,分析比较了不同试样的克重、厚度、断裂强力、断裂功、顶破强力、断裂伸长率、透气量、透湿量、有效孔径、过滤性能和容尘量等,实验发现纺黏玻璃纤维非织滤材的断裂强力、顶破强力、断裂伸长率、透气量、透湿量等均与克重和厚度有一定关系,结果表明:纺黏玻璃纤维非织滤材具有独特的性能,适合开发各类功能性产品,在纺织工业上应用广泛。     

高效空气过滤用PTFE膜材料的结构和性能

聚四氟乙烯(PTFE)膜高效空气过滤材料以其过滤效率高、初始阻力小和无硼释放等优点,在电子工业洁净室中得到了广泛的应用,然而目前尚缺乏PTFE膜与传统滤材结构及性能的系统对比研究。本文选取了两种商业应用的PTFE膜高效滤材,采用扫描电子显微镜、孔径分析仪、自动滤材测试仪等多种表征手段对材料的微观结构和过滤性能与超细玻璃纤维(简称玻纤)滤材进行了较为全面的对比研究,结果表明,PTFE膜本质上也是一种纤维类滤材,其纤维平均直径为60～85nm,远低于玻纤滤材的668.8nm;高效PTFE膜的过滤效率与玻纤滤材相当,且其初始阻力不及玻纤滤材的50%,但PTFE膜滤材的容尘性能不及玻纤滤材,更适合应用于有再生或预过滤装置的场所。     

自主创新,促核级涂料国产化——拥有自主知识产权的中远关西CAP核电站防护涂层系列产品通过鉴定

正如今,我国正在大力发展核电新能源,要全面提升核工业竞争优势。其中,第三代核电CAP堆型核电站是未来几年我国核电发展的主要方向。但目前核电站使用的核级保护涂层均被国外产品所垄断,因此,开发具有自主知识产权的CAP系列核级保护涂层势在必行。中远关西涂料化工有限公司在推进核级涂料国产化的进程中走在了前列……2016年4月28日,CAP核电站防护涂层系列产品鉴定会在天津召开。此次鉴定会,由来自中国核工业集团公     

玻璃纤维屋面材料需要量将增加

根据PPG公司玻璃纤维分部的纸增强材料销售经理Edward V Haney估计,在今后五年内美国玻璃纤维纸的销售量将增加62％,他的依据是今后美国将推广使用以玻璃纤维为基材的屋面材料,使之普及化。他认为,在价格相同的条件下,玻璃纤维屋面材料的性能要比以有机材料为基材的屋面材料来得优越。玻璃纤维屋面材料的耐火等级为A级,而以有机材料为基材的屋面材料的耐火等级仅为C级,而且,前者的使用寿命比后者多五年。目前,大多数屋面材料制造厂商相信玻     

采用聚四氟乙烯材料的超高性能空气滤材

日本大金工业公司开发了以氟树脂的聚四氟乙烯(PTFE)为素材的超高性能空气过滤材料“牛洛法因”。 该滤材具有2～3μm厚的致密纤维结构,其捕集效率与以往的玻璃纤维制的滤材相比,可提高到1.5倍的9N。另外,作为氟树脂的PTFE     

玻纤空气滤纸的产品特点及应用

玻璃纤维纸由于具有极高的过滤效率、很好的化学稳定性和较低的阻力而成为高效尤其是超高效空气过滤器的首选材料.本文将在描述国内外玻纤空所滤纸发展现状的基础上,介绍我公司新建玻纤空气滤纸生产线的技术特点和产品特点.并概括地谈了一些玻璃滤材检测和应用方面的问题.同时,作者希望国内滤器生产厂家能够关注国内滤纸的发展,特别是玻璃纤维滤纸的应用,在选择合理的检测技术,安装使用技术的基础上,使国内玻璃滤纸行业再上一个新台阶.     

新型玻纤布覆膜滤料在燃煤电厂袋式除尘器上的应用

介绍了玻纤布滤料发展及应用,并对玻纤布覆膜滤料代替PPS滤料用于电力行业袋式除尘器的可行性进行分析,讨论了玻纤布滤料与电力行业传统用PPS滤料的性能差距以及成本优势。针对国外玻纤布滤料早在燃煤电厂袋式除尘有长期应用的案例,开发出了新型玻纤布覆膜滤料,成功应用于2×200 MW燃煤机组烟气净化,实际使用效果良好。     

电力行业用新型高防酸处理玻纤布覆膜滤料的性能研究

针对电力行业酸性烟气工况的特点,开发了新型高防酸处理玻纤布覆膜滤料。对比研究了新型高防酸处理与常规处理玻纤布覆膜滤料的防酸性能、防水性能,结果显示新型高防酸处理玻纤布覆膜滤料相比普通玻纤布覆膜滤料具有明显的防水、防酸优势。     

玻纤覆膜滤料在水泥熟料生产线中的应用

介绍了福泰(Filtex)覆膜滤料在4500t/d带纯低温余热发电水泥熟料生产线中的应用与维护。通过对覆膜滤料使用情况的跟踪与数据分析和定期抽换检测,及时了解滤料在该项目上的积灰程度、是否结露、强度损失等工作情况,对个别破袋现象和结露现象进行及时的处理并总结了维护经验。     

Optimization of Pleated Filter Designs Using a Finite-Element Numerical Model

A numerical model has been developed to optimize the design of pleated filter panels. In this model, the fluid flow is modeled by a steady laminar flow and the filter media resistance is governed by the Darcy-Lapwood-Brinkman equation. A finite element method with a nine-node Lagrangian element is used to solve the governing equations. For the rectangularly pleated filter panel, the numerical results agree well with the analytical model of Yu and Goulding (1992) and with his experimental data. The pressure drop increases at small pleat count due to increased media face velocity, and at large pleat count due to increased viscous drag in the pleat spacings. Therefore, an optimal pleat count for minimum pressure drop exists at a certain pleat height for each filter media type. The optimization of rectangular pleated filters, e.g., mini-pleated filter panels, has been performed for six commercial filter media. The optimal pleat count is shown to increase with decreasing media permeability of the filter media. A generalized correlation curve has been found for the six filter media by using a nondimensional parameter analysis. The results can be used to design pleated filter panels with minimum pressure drop.     

核电涂料性能及其涂装

简要介绍了核电站防腐涂料对保护核电站的重要作用。讨论了核电站配套所需涂料的基本性能。针对核电系统防护所涉及的特殊污染介质和涂料性能测试的相关标准,阐述了核电涂料的施工要求。     

Experimental Study on Filtration Performance of Flat Sheet Multiple-Layer Depth Filter Media for Intake Air Filtration

Depth filter media are usually composed of multiple layers to attain optimal values of main filtration parameters such as pressure drop and particle collection efficiency (PCE). Understanding the performance of the single layers that make up the filter media can contribute to attaining these optimum values. For the purpose of this study, we have developed two samples of depth filter media, 2LM and 3LM, composed of two and three layers, respectively. Samples of the media and single layers have been prepared in flat sheet form. Filtration performance of these samples has been evaluated using a lab-scale flat sheet filter media test unit with KCl as the test aerosol. Results from these tests have been compared with those from an automated filter tester (AFT) with NaCl as the test aerosol. These media have been characterized based on filter media properties and data from the filtration performance tests and the effect of layers on filtration performance has been observed. Pressure drop data from the tests with a standard test unit and our laboratory test unit are similar, and the difference in data is attributed to high inlet concentration of KCl particles. The overall filtration performance is strongly dependent on the final layer regarding pressure drop and particle of two- and three-layer filter media. Other constituent layers can be seen as contributors to the dust-holding capacity of the filter media and can reduce the dust load for the final layer.

Copyright 2013 American Association for Aerosol Research     

A study on the effects of laminating temperature on the polymeric nanofiber web

The use of fine fiber has become an important design tool for filter media. Nanofibers-based filter media have some advantages such as lower energy consumption, longer filter life, high filtration capacity, easier maintenance, low weight rather than other filter media. The nanofibers-based filter media made up of fibers of diameter ranging from 100 to 1,000 nm can be conveniently produce by electrospinning technique. Common filter media have been prepared with a layer of fine fiber on typically forming the upstream or intake side of the media structure. The fine fiber increases the efficiency of filtration by trapping small particles, which increases the overall particulate filtration efficiency of the structure. Improved fine fiber structures have been developed in this study in which a controlled amount of fine fiber is placed on both sides of the media to result in an improvement in filter efficiency and a substantial improvement in lifetime. In the first part of this study, the production of electrospun nanofibers is investigated. In the second part, a different case studyis presented to show how they can be laminated for application as filter media. Response surface methodology (RSM) was used to obtain a quantitative relationship between selected electrospinning parameters and average fiber diameter and its distribution.     

Electrospun nanofibers with application in nanocomposites

The use of fine fiber has become an important design tool for filter media. Nanofibers-based filter media have some advantages such as lower energy consumption, longer filter life, high filtration capacity, easier maintenance, low weight rather than other filter media. The nanofibers-based filter media made up of fibers of diameter ranging from 100 to 1,000 nm can be conveniently produce by electrospinning technique. Common filter media have been prepared with a layer of fine fiber on typically forming the upstream or intake side of the media structure. The fine fiber increases the efficiency of filtration by trapping small particles, which increases the overall particulate filtration efficiency of the structure. Improved fine fiber structures have been developed in this study in which a controlled amount of fine fiber is placed on both sides of the media to result in an improvement in filter efficiency and a substantial improvement in lifetime. In the first part of this study, the production of electrospun nanofibers is investigated. In the second part, a different case studyis presented to show how they can be laminated for application as filter media. Response surface methodology (RSM) was used to obtain a quantitative relationship between selected electrospinning parameters and average fiber diameter and its distribution.     

Optimized Backflushing Process for Fibrous Media in Engine Oil Filtration and Enhancement by Ultrasound

Filter media that are made of metal fiber fleece have been qualified as a very suitable method to clean engine oils from fine particles in large diesel application. However, regeneration by backflushing of these densely packed depth filtration media is a great challenge. In experimental studies, the principles of successful hydrodynamic backflushing could be identified. Furthermore, the auxiliary effects of medium‐ and high‐power ultrasound on this process were investigated and could be qualified. Ideal process parameters for the general aim of freeing filter media from clogging particle fractions whilst using minimized amounts of flushing medium can be derived. This generates input parameters for an optimized apparatus design in real‐scale application.     

Probleme bei der Filtration unter extremen Gas- und Staubbedingungen

Filtration problems under extreme conditions . Filtering separators belong to the high-performance separators and their significance in dust extraction techniques is increasing. They are distinguished by offering almost any desired efficiency of separation which property, on use of appropriate filter media, is also preserved under fluctuating working conditions with regard to dust content in the crude gas, size of the dust particles to be separated, and the rate of gas flow. In order to exploit these advantages also under extreme conditions of gas and dust attempts were made in recent years to extend the operating range by the development of new filter media. Among the applications deserving mention are the fly-ash collection in coal-fired power plants and the dust separation under high temperatures for new power technologies. The present state of the art and experience gained so far are presented.