共查询到19条相似文献,搜索用时 62 毫秒
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从滤布的自身性能出发,分析归纳总结了编织滤布的纱线类型、线密度、纤维支数,捻度,编织方法和精整加工对过滤的影响,在此基础上,依据各种性能对过滤性进行了排序。对今后过滤介质的选用以及发展提供了可靠的参考依据。 相似文献
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东鞍山烧结厂应用GL919过滤浮选矿浆与原来使用的滤布相比,提高了精矿粉回收率,降低了滤饼中含水量,同时还减少了污水外排对河流的污染。综合效益十分可观。 相似文献
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笔者在“国内过滤介质调查(一)”中介绍了滤布及针刺毡,本文重点介绍编织滤网、滤带、各种板网、筛网、筛、滤纸、膜及烧结金属。 一、编织滤网、滤带 编织金属丝网是应用广泛、耐磨损的过滤介质,主要分编织金属丝网(带)与编织合成纤维网(带)两类。聚脂单丝滤带,是 相似文献
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本文通过实验研究,考察了滤饼的颗粒性质、饱和度、厚度、操作压差、滤布性质等因素对这过滤介质卸饼性能的影响,提出了评定过滤介质滤饼可剥落性实验方法的建议。 相似文献
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导出考虑滤布阻力时恒压过滤最佳操作周期的严格公式,并给出了忽略滤布阻力对最佳周期影响的严格判据(M-判据),对该判据的研究表明,当过滤辅助时间较短时,简单地根据滤布阻力当量滤液量和实际滤液量之比(Ve/V)来判断能否忽略滤布阻力对最佳操作周期的影响是不够充分的。 相似文献
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从过滤与分离基本原理出发 ,针对物料的特性以润滑油白土、悬浮液为例 ,确定过滤分离方法与操作条件。 相似文献
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A mathematical model for constant pressure filtration is established. The distribution of hydraulic pressure within the cake and the medium resistance are measured. The medium resistance Rm is calculated from the suppositional filtration time Ore. It is demonstrated that Rm is nearly a constant for a given filter cloth. 相似文献
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K. H. Rbbeling 《European Journal of Lipid Science and Technology》1970,72(12):1037-1040
Filtration of Edible Oils and Fats and Its Automation The various filtration operations in the edible oil industry are given. Processes are listed in which pressure filters, consisting of a pressure vessel and filter elements provided with metal cloth are advantageous. Automation of various filtration operations using these filters is finally dealt with. 相似文献
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针对湿法磷酸净化过程中存在的液固分离问题,采用离心过滤的方法,探讨了磷酸预处理脱色液的过滤特性,研究了分离因素、滤饼厚度、过滤介质等因素对过滤的影响。实验结果表明,当分离因素约为252,滤饼厚度约为20 mm,采用涤纶加密型滤布时,过滤效果最佳。 相似文献
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Andreas Kavouras 《Powder Technology》2005,154(1):24-32
Various physically based models are available to describe an uneven distribution of the filter cake on the filter area of jet-pulsed bag filters. Such an uneven distribution is intrinsically present, when only segments of the filter are cleaned at a time but not the entire filter. Moreover, also patchy cleaning causes an uneven filter cake loading, since only a fraction of a filter cake is removed by a jet pulse while the other fraction remains basically intact on the filter cloth. Unstable filter operation can be defined by a continuous or periodic reduction of the filtration time per cleaning pulse. The operation of a jet-pulsed filter was mathematically simulated and, by systematically altering model parameters, unstable operation was obtained. Three situations were investigated: a continuous increase of the filter cake resistance parameter, a continuous increase of the filter cloth resistance parameter, and a particular cake detachment function where, after a filter cake survived some filter cycles, it can hardly be removed. The transient pressure difference simulation results reveal characteristic patterns: Taking normal stable operation as a reference, an increase of the filter cake resistance leads to shorter filtration and somewhat longer cleaning intervals (i.e., more cleaning pulses). An increase of the filter cloth resistance causes longer filtration and also considerably more cleaning pulses. Deficient filter cleaning gives shorter filtration periods and extremely long cleaning intervals. A comparison between model simulations and pilot plant results shows that there, the experimentally observed unstable operation can most likely be attributed to problems with cake detachment. Hence appropriate measures for avoiding unstable operation were successfully introduced. 相似文献