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螺旋过滤机的工作过程是在螺旋体转动作用下,固液混和物沿过滤槽斜向上方输送并完成固液过滤分离,过滤分离后的固体物料经螺旋体输送排出.该设备可连续过滤,生产能力大,能耗低,操作简单.本文以硝酸钾晶体料液采用螺旋过滤机过滤为例,简要介绍螺旋过滤机的主要结构原理,并对螺旋过滤机过滤面积、过滤槽尺寸、螺旋轴轴径、螺旋直径与螺距、... 相似文献
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全封闭连续高效过滤机 总被引:1,自引:0,他引:1
全封闭连续高效过滤机是一种操作过程全封闭、过滤过程可连续的新型过滤机,具有内外两层滤网,比同类机型的过滤面积增大近一倍。本机是加压过滤,过滤推动力大,是一种较为理想的固液分离设备。 相似文献
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利用动态过滤机对沉积物或多孔物进行洗涤,能使物料得到充分的扩散和混合,洗涤效果甚佳。与滤饼过滤设备相比,动态过滤机的过滤速度高,洗涤液用量少。少本文提出了考虑固液扩散传质阻力的洗涤模型,描述了参量测定法,并将理论值与实验结果进行了比较。还提出了节约能耗和液耗量的优化方案,指出了所述洗涤方法的应用范围。 相似文献
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本文介绍板框隔膜式过滤机的工作特性以及其在灰水处理固液分离过程中的应用,通过对板框隔膜式过滤机的过滤面积的计算,指导选取合适的板框隔膜式过滤机. 相似文献
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本文介绍了一种固液混合物的过滤分离装置的结构组成,该装置实现了过滤和洗涤过程的分离,实现了生产的连续化;整套装置处于密闭的管道中,密封性好;由于重力作用,滤渣在第一过滤介质下不会累积过厚,提升了过滤速度与效率。 相似文献
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利用立式自动压滤机对4A沸石晶化料浆和合格料浆进行了一系列分离洗涤和风干试验,试验结果表明,该设备的洗涤效果不明显,不能用该设备对4A沸石晶化滤饼进行直接洗涤;但是其滤饼水分可以降到15%以下,故可以用在晶化料浆和合格料浆的分离与风干工序上,能大大降低搅洗工序的洗涤水耗和烘干工序的能耗。 相似文献
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用移动室带式真空过滤机对4A沸石晶化料浆进行了一系列的分离洗涤试验,试验结果表明,该设备完全可以代替原有XMZ压滤机,并且,其产能是原来的10倍以上,洗涤水耗是原来的60.4%。 相似文献
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《分离科学与技术》2012,47(12-13):1323-1349
Abstract Charge characteristics of particles in aqueous or nonaqueous slurries are known to play an important role in solids-liquid separation processes. We have been conducting a fundamental study on filtration of colloidal particles suspended in nonaqueous media, such as coal and tar sand slurries based on their charge characteristics. This paper presents results of such a study involving cross-flow electrofiltration of nonaqueous slurries. Data are reported for α-Al2O3 particles suspended in tetralin. The effects of feed rate, driving pressure and electrical field strength on the filtration rate, total deposition rate on the central electrode, and the efficiency of the filter are presented. The outlet slurry concentrations were measured with a specially built X-ray densitometer. These data are analyzed by a mathematical model using a Graetz-type analysis. The rate of deposition was found to be determined mainly by the electric field. The sludge flow near the central electrode significantly affected the efficiency of separation. 相似文献
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Cordierite monoliths were washcoated with slurries of different zeolites (ZSM5, β zeolite, mordenite, and Zeolite Y) in order to establish the relationship between washcoat characteristics and the powder and slurry properties. To achieve this objective, initially, the zeolite particle size was reduced to 2–3 μm by wet ball milling, and during this process the crystallinity and surface area of the powder were not significantly affected. The rheological behavior of the zeolite slurries is a function of the type of zeolite and solid content. The washcoat properties, such as loading, thickness, uniformity, and reproducibility, depend on the particle size of the powder, number of immersions, slurry concentration, slurry viscosity, and surface tension. The mechanical stability of the zeolite washcoat decreases with an increase in cumulative loading and slurry particle size. Addition of binder (colloidal silica) results in an improvement in zeolite loading and washcoat adherence. 相似文献
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商品磷酸要求其中的固含量低于1%,湿法生产的磷酸不能完全达到要求。介绍了采用改进后的LAROX压滤机过滤浓磷酸淤浆和粗磷酸混合后固含量较低的淤浆,冲洗滤布后的洗涤液洗涤滤饼,并改用浓磷酸冲洗淤浆管道,取得了较好的效果。 相似文献
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W. E. Adam K. Neumann J. P. Ploumen 《European Journal of Lipid Science and Technology》1979,81(11):445-449
Sodium Aluminium Silicates - Properties and Application Sodium aluminium silicates in amorphous and crystalline form are used since many years in various technical processes. The crystalline sodium aluminium silicates, e. g. zeolites, belong to the group of structured silicates and are known for their reversible water uptake and alkaline earth exchange properties. Recently, sodium aluminium silicates have gained considerable importance since their cation exchanging ability can be utilized in washing agents for the removal of undesirable hardness of water. Thus, the polyphosphates used in washing agents can possibly be substituted. Zeolites can be supplied to the detergent industry in the form of powder or suspension. Production of the powder by spray drying does not involve special problems. Incorporation of the powder into the slurry of the detergent appears to be an anachronism from the viewpoint of energy saving. Optimization work on suspensions of zeolite yielded stable products with 45 to 48% zeolite content. The theory of critical particle concentration was applied in this work. 相似文献
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目前国内使用的盐水过滤器包括国产PE精密过滤器、戈尔(GORE)膜液体过滤器以及美国颇尔(PALL)公司推出的新型通用舒马赫FT型表面过滤器,它们的过滤过程及反洗过程均具有静态过滤器的特征。笔者对静态过滤器的特征及影响过滤器性能的主要参数进行了分析,并对过滤器的滤芯结构、过滤形式、运行特征进行了比较。认为戈尔过滤器具有膜薄、滤芯有柔性、易清洗及装置较简单等优点。 相似文献