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首页> 外文期刊>Journal of Hazardous Materials >Transmitted-light microscopy - a new method for surface structure analysis of cleanable non-woven dust filter media
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Transmitted-light microscopy - a new method for surface structure analysis of cleanable non-woven dust filter media

机译：透射光显微镜-一种可清洗的无纺布灰尘过滤介质表面结构分析的新方法

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摘要

With regard to the more stringent legislation in environmental protection strong efforts have been made to reduce fine dust emissions. As a result filter devices equipped with dry operating cleanable textile filter media have become one of the most favoured separation techniques for fine dust. For improvement of cleanable filter media it is necessary to understand the influence of their structure on their filtration behaviour and to develop parameters for characterising their clogging and penetration behaviour. The aim of the research work presented in this paper was to improve the already developed reflected-light method [W. Koschutnig, G. Mauschitz, W. Hoeflinger, Charakterisierung der Oberflaechenbehandlung und des Verstopfungsverhaltens von abreinigbaren Staubfiltermedien mittels Bildanalyse, CIT 76, 2004, 10, 5 pp.] to get a structure parameter of cleanable non-woven dust filter media, which can give information about the particle penetration. To reach this goal transmitted-light is used instead of reflected-light. By that way images with higher contrast will be achieved which enable to define a mean hydraulic diameter for the pores near the outer surface of cleanable non-woven dust filter media. Experimental measurements were carried out which prove that the mean hydraulic pore diameter can be a measure for the particle penetration of a filter medium. The pore volume equivalent, which can be used as a measure of the dust storage capacity of the filter medium can also be detected by the transmitted-light method.
机译：关于环境保护方面更加严格的立法，已经为减少细粉尘排放做出了巨大努力。结果，配备有可干燥操作的可清洁纺织品过滤介质的过滤装置已成为最受青睐的细粉分离技术之一。为了改进可清洁的过滤介质，必须了解其结构对其过滤行为的影响，并开发出表征其堵塞和渗透行为的参数。本文提出的研究工作的目的是改进已经开发的反射光方法。 Koschutnig，G。Mauschitz，W。Hoeflinger，Charakterisierung der Oberflaechenbehandlung und des Verstopfungsverhaltens von abreinigbaren Staubfiltermedien mittels Bildanalyse，CIT 76，2004，10，5 pp。]得到可清洁的无纺布过滤器的结构参数有关粒子渗透的信息。为了达到这个目标，使用透射光而不是反射光。这样，将获得具有更高对比度的图像，该图像能够为可清洁的无纺布灰尘过滤介质外表面附近的孔定义平均水力直径。进行实验测量，证明平均水力孔径可以作为过滤介质颗粒渗透的量度。也可以通过透射光法检测可以用作过滤介质的粉尘储存能力的量度的孔体积当量。

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