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閃蒸干燥機(jī) 基爾M / S奈良機(jī)械公司,日本,閃蒸干燥器在世界上的^制造商的技術(shù)合作,生產(chǎn)閃蒸干燥器。這種設(shè)計(jì)使用懸浮顆粒表面的材料中的水分迅速除去的固體顆粒分散在加熱的氣體/空氣流的干燥技術(shù)。操作原理這個(gè)詞閃蒸是指瞬時(shí)或快速干燥的產(chǎn)品。有五種主要因素支配的干燥速度。這些是:1。水分分布 這被定義為潮濕的表面的干燥介質(zhì)(熱空氣或氣體)中的可訪問性。這是通過使用分散機(jī)如機(jī)械散射體,雙槳饋線或籠式磨機(jī)等,通過混合在飼料中的干燥產(chǎn)物的產(chǎn)物在閃蒸干燥器實(shí)現(xiàn)。2。溫度差 在閃蒸干燥,它是可能的,使用高的初始溫度。這些都可能是由于接觸時(shí)間短的結(jié)果,產(chǎn)品的溫度從未超過氣體的濕球溫度,除非所有的表面水分除去。3。 AGITATION 在閃蒸干燥機(jī),攪拌或湍流是通過使用高氣體速度。蒸汽膜不斷卷走從潮濕的顆粒。其結(jié)果是,除去水分幾乎是瞬時(shí)的。4。顆粒結(jié)構(gòu) 具有毛細(xì)管的材料將能夠更迅速地得到的迅速干燥作用中的內(nèi)部區(qū)域的表面自進(jìn)化水分。有沒有空隙的致密顆粒,是很難干燥,在一個(gè)閃蒸干燥系統(tǒng)。5。顆粒尺寸 通過蒸發(fā)從粒子的表面來完成干燥。因此,要除去的內(nèi)部的水分,這是必要的水分通過擴(kuò)散到達(dá)表面。這一轉(zhuǎn)移將明顯發(fā)生^迅速,更小的顆粒。典型布置 若干安排是可能的單獨(dú)的應(yīng)用程序,以適應(yīng)規(guī)范。少數(shù)的安排都在這里顯示?梢愿淖兊男枰蛻(yīng)用基礎(chǔ)的基本組成部分。應(yīng)用 閃蒸干燥可以考慮在幾乎任何應(yīng)用程序可以被轉(zhuǎn)換成一個(gè)干粉濾餅,離心機(jī)蛋糕,污泥或潮濕的固體。 這種技術(shù)可以經(jīng)濟(jì)地使用幾乎任何材料范圍從熱敏感的藥品,如青霉素,磺胺類藥物,可可蛋糕等食品原料,淀粉,纖維素,PVC,金屬硬脂酸鹽,礦物質(zhì),如碳酸鈣陶瓷,粘土,和許多其他的化學(xué)物質(zhì),如材料。 此技術(shù)是^經(jīng)濟(jì)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.近代干燥機(jī)開始使用的是間歇操作的固定床式干燥機(jī)。19世紀(jì)中葉,洞道式干燥機(jī)的使用,標(biāo)志著干燥機(jī)由間歇操作向連續(xù)操作方向的發(fā)展;剞D(zhuǎn)圓筒干燥機(jī)則較好地實(shí)現(xiàn)了顆粒物料的攪動(dòng),干燥能力和強(qiáng)度得以提高。一些行業(yè)則分別發(fā)展了適應(yīng)本行業(yè)要求的連續(xù)操作干燥機(jī),如紡織、造紙行業(yè)的滾? 隨著城市發(fā)展加快,城市污泥、市政污泥、食品污泥、制藥污泥、印染污泥、工業(yè)污泥、電鍍污泥等情況逐漸嚴(yán)重,污泥烘干機(jī)變的越來越重要。 污泥按其來源,一般分為生活污泥、電鍍污泥、印染污泥、制革污泥、造紙污泥、石油化工污泥等!疚勰嗵攸c(diǎn)】1、 污泥粘性大,不利用輸送;2、 污泥含水分高,耗能量較大;變送器,具有明顯增加固體停留時(shí)間氣流干燥器描述。結(jié)合閃蒸干燥機(jī)預(yù)干燥,它提供了一個(gè)簡單的和成本許多干燥采用流化床或轉(zhuǎn)筒干燥機(jī)否則解決問題有效解。今天我們主要介紹的是活性白土專用閃蒸干燥機(jī)的安裝露點(diǎn): 一個(gè)閃蒸干燥機(jī)理想情況下,露點(diǎn)傳感器應(yīng)加熱器和前安裝料斗測量和控制傳遞通過空中的露點(diǎn)塑料材料。 一、概述 旋轉(zhuǎn)閃蒸干燥機(jī)是連續(xù)操作的對流干燥設(shè)備,也是目前工業(yè)生產(chǎn)中用于干燥濾餅狀物料的****設(shè)備之一。閃蒸干燥機(jī)主機(jī)大致可分為三大部分: 集風(fēng)室及破碎流化段; 中一、概 述 微波真空干燥設(shè)備是微波能技術(shù)與真空技術(shù)相結(jié)合的一種新型微波能應(yīng)用設(shè)備,它兼?zhèn)淞宋⒉罢婵崭稍锏囊幌盗袃?yōu)點(diǎn),克服了常規(guī)真空干燥周期長、效率低的缺點(diǎn),在一般物料干燥過程中,可比常規(guī)方法提高工效4~10倍。具有干燥產(chǎn)量高、質(zhì)量好,加工成本低等優(yōu)點(diǎn),< |
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