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闪蒸干燥机 基尔M / S奈良机械公司,日本,闪蒸干燥器在世界上的^制造商的技术合作,生产闪蒸干燥器。这种设计使用悬浮颗粒表面的材料中的水分迅速除去的固体颗粒分散在加热的气体/空气流的干燥技术。操作原理这个词闪蒸是指瞬时或快速干燥的产品。有五种主要因素支配的干燥速度。这些是:1。水分分布 这被定义为潮湿的表面的干燥介质(热空气或气体)中的可访问性。这是通过使用分散机如机械散射体,双桨馈线或笼式磨机等,通过混合在饲料中的干燥产物的产物在闪蒸干燥器实现。2。温度差 在闪蒸干燥,它是可能的,使用高的初始温度。这些都可能是由于接触时间短的结果,产品的温度从未超过气体的湿球温度,除非所有的表面水分除去。3。 AGITATION 在闪蒸干燥机,搅拌或湍流是通过使用高气体速度。蒸汽膜不断卷走从潮湿的颗粒。其结果是,除去水分几乎是瞬时的。4。颗粒结构 具有毛细管的材料将能够更迅速地得到的迅速干燥作用中的内部区域的表面自进化水分。有没有空隙的致密颗粒,是很难干燥,在一个闪蒸干燥系统。5。颗粒尺寸 通过蒸发从粒子的表面来完成干燥。因此,要除去的内部的水分,这是必要的水分通过扩散到达表面。这一转移将明显发生^迅速,更小的颗粒。典型布置 若干安排是可能的单独的应用程序,以适应规范。少数的安排都在这里显示。可以改变的需要和应用基础的基本组成部分。应用 闪蒸干燥可以考虑在几乎任何应用程序可以被转换成一个干粉滤饼,离心机蛋糕,污泥或潮湿的固体。 这种技术可以经济地使用几乎任何材料范围从热敏感的药品,如青霉素,磺胺类药物,可可蛋糕等食品原料,淀粉,纤维素,PVC,金属硬脂酸盐,矿物质,如碳酸钙陶瓷,粘土,和许多其他的化学物质,如材料。 此技术是^经济的,如果只以除去表面水分。FLASH DRYERS KILBURN manufactures Flash Dryers in technical Collaboration with M/S NARA MACHINERY COMPANY, JAPAN, the leading manufacturer of Flash Dryers in the world.This design uses suspended particle drying techniques where surface moisture of the material is rapidly removed by dispersing the particulate solids in a heated stream of gas / air.PRINCIPLE OF OPERATIONThe very word FLASH means instantaneous or rapid drying of products.There are five primary factors which govern the speed of drying. These are :1. MOISTURE DISPERSION This is defined as the accessibility of the moist surface to the drying medium (Hot air or gas). This is achieved in a flash dryer by use of a product disperser such as mechanical scatterer, double paddle feeder or cage mill etc. by mixing dried product in the feed.2. TEMPERATURE DIFFERENTIAL In flash drying it is possible to use high initial temperatures. These are possible due to short contact time with the result that the product temperature never exceeds the wet bulb temperature of the gas unless all surface moisture is removed.3. AGITATION In Flash Dryer, agitation or turbulence is accomplished by the use of high gas velocities. The vapour film is continuously swept away from moist particles. As a result, moisture removal is practically instantaneous.4. PARTICLE STRUCTURE Materials having capillaries will be able to evolve moisture to the surface from internal areas more rapidly resulting in swift drying action. Dense particles which have no voids are difficult to dry in a flash drying system.5. PARTICLE SIZE Drying is accomplished by evaporation from the surface of the particle. Therefore to remove the internal moisture, it is necessary that the moisture reaches the surface by diffusion. This transfer will obviously take place most rapidly with smaller particles.TYPICAL ARRANGEMENTS Several arrangements are possible for individual application to suit specification. A few arrangements are shown here. The basic components can be changed on need & application basis.APPLICATIONS Flash drying can be considered in almost any application where a Filter Cake, Centrifuge Cake, Sludge or Damp solids can be converted to a dry powder. This technique can be economically utilized on practically any material ranging from heat sensitive Pharmaceuticals like sulfa drugs, Penicillin, Food Materials like Cocoa Cake, Starch, Chemicals like Cellulose, PVC, Metallic Stearates, Minerals and Ceramics like Calcium Carbonates, Clay, and many other materials . This technique is most economical if only surface moisture is to be removed.流化床干燥机又称沸腾干燥机,流化床技术在我国制药工业的应用应回溯到上世纪80年代,从原先的流化床干燥发展到流化床混合、流化床包衣、流化床制粒(丸)和流化床粉碎等方面的应用,在 直管气流干燥机 湿料由加料器加入直立管,空气经鼓风机鼓入翅片加热器,加热到一定温度后吹入直立管,在管内的速度决定于湿颗粒的大小和密度,一般大于颗粒的沉降速度(约为10~20米/秒)。已干燥的颗粒被强烈气流带出,送到两个并联的旋风分离器分离出来,经螺旋输送器送出,尾气则经袋式过滤器以前的博客文章中提到的,Rotacurrent和Venturijet的闪蒸干燥机利用选择性的原则运作,每个人都有自己独特的优势。处理的非粘性Rotacurrent产品没有返混,中而Venturijet会降低旋流器的大小和互补集尘设备。 Heyl帕特森提供两种类型,但本文将重点对Rotacurrent? 污泥烘干机可广泛应用于活性污泥干燥、下水污泥干燥、石化污泥干燥、造纸污泥干燥、印染污泥干燥、制革污泥干燥、电镀污泥干燥、市政污泥干燥、生物发酵菌渣等各种污泥及各种糟渣等高湿物料干燥。 污泥烘干机是针对污泥这一类具有高水分、高粘性、高持水性和低热值等特点的物料,专门研发设计的污泥专用干燥设备, 硬脂酸盐是一种添加剂,适用范围很广,其中最重要的一个作用是对于聚合物有非常好的效果。比如可用作聚烯烃中的酸的中和剂,对于物品的润滑有很好的效果,增加寿命(对于热固性制品而言)。市场上,硬脂酸盐需求很大,一般是集中在:硬脂酸钙、硬脂酸锌、硬脂酸钠这几种。 |
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