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以前的博客文章中提到的，Rotacurrent和Venturijet的閃蒸干燥機(jī)利用選擇性的原則運(yùn)作，每個(gè)人都有自己獨(dú)特的優(yōu)勢(shì)。處理的非粘性Rotacurrent產(chǎn)品沒有返混，中而Venturijet會(huì)降低旋流器的大小和互補(bǔ)集塵設(shè)備。 Heyl帕特森提供兩種類型，但本文將重點(diǎn)對(duì)Rotacurrent。的Rotacurrent閃蒸干燥機(jī)中的停留時(shí)間變化，根據(jù)其物理性質(zhì)，對(duì)每個(gè)粒子，每個(gè)粒子的停留時(shí)間，它的重量成比例。這將導(dǎo)致在沒有過度干燥，無過熱和處理任何不必要的風(fēng)險(xiǎn)或產(chǎn)品降解。在閃蒸干燥機(jī)的Rotacurrent，制造Heyl＆Patterson的Renneburg分部，每個(gè)粒子需要其自己的螺旋路徑的干燥塔的頂部。路徑的總長度，構(gòu)成為顆粒的總的停留時(shí)間。由于螺旋軌跡，停留時(shí)間是干燥器的實(shí)際柱高度無關(guān)。細(xì)顆粒具有短的停留時(shí)間，而較重的有較長的時(shí)間。特強(qiáng)，不良份子分離和消除在干燥器的列的基礎(chǔ)上通過檢查放電陷阱。濕進(jìn)料進(jìn)入的Rotacurrent的的機(jī)通過在干燥塔的基礎(chǔ)上的氣閘。通過常規(guī)的熱源，它被注入到主熱空氣流。然后將濕的飼料如下螺旋路徑通過干燥塔內(nèi)部。在蒸餾柱底部的排出門是反加權(quán)，所以額外的重粒子如腫塊，寶石和雜散金屬被自動(dòng)排出。這的陷阱也允許目視檢查和物理訪問的列的內(nèi)部。有在柱頂部的另一檢查門。在一些模型中，熱的，干燥的空氣的二次供應(yīng)被添加到主流程通過可調(diào)節(jié)百葉窗沿氣缸的內(nèi)部隔開。該二次空氣流產(chǎn)生一個(gè)機(jī)械的效果，補(bǔ)強(qiáng)的初始螺旋空氣流，和熱效應(yīng)的主空氣流拿起水分和在蒸發(fā)過程中冷卻，以補(bǔ)償損失的干燥潛力經(jīng)加工的產(chǎn)品在通過出口渦旋盤，并進(jìn)入一個(gè)額外的高效率的旋流器的列的頂部排出。這旋風(fēng)實(shí)現(xiàn)非常有效的分離，節(jié)約資金和能源。在產(chǎn)品離開旋流器通過氣閘和定向到儲(chǔ)存或立即使用的導(dǎo)管。烘干機(jī)排出廢氣由一個(gè)風(fēng)扇，并可以部分地用于熱回收再循環(huán)。湍流傳熱和徹底的顆粒分散結(jié)合內(nèi)的Rotacurrent的閃存機(jī)為^高熱效率。列設(shè)計(jì)的外部的熱輻射的損失^小化。由于良好的熱傳導(dǎo)性能，柱的高度，其他尺寸小于同等大小的，傳統(tǒng)的烘干機(jī)。其結(jié)果是，建設(shè)成本和絕緣要求也較低。由于氣流移動(dòng)的產(chǎn)品，而不是機(jī)械的手段，Rotacurrent^少的移動(dòng)部件。 Rotacurrent機(jī)的日常維護(hù)活動(dòng)也提高了運(yùn)營商的流動(dòng)和連續(xù)的視覺檢查，通過直接訪問柱內(nèi)飾。為了提高加工效率，先前干燥的產(chǎn)品的一部分，可以被重新引入糊狀粘性產(chǎn)品的主要流�；旒徎�“返混”的原料通�？梢愿雍唵吻矣行У剡M(jìn)行處理。此外，一個(gè)特別設(shè)計(jì)的研磨和干燥的系統(tǒng)可以被提供，和溶劑浸漬的產(chǎn)品可以在惰性氣體的處理，以實(shí)現(xiàn)溶劑回收。所有Rotacurrent閃蒸干燥器和冷卻器可提供與控制柜容納自動(dòng)化控制及儀器儀表。一個(gè)Rotacurrent閃蒸干燥機(jī)是幾臺(tái)機(jī)器，可在Heyl和帕特森的研究實(shí)驗(yàn)室之一，任何產(chǎn)品的完整的測(cè)試，以確�？蛻艏庸じ鞣N規(guī)格。As mentioned in a previous blog article, the Rotacurrent and Venturijet Flash Dryers operate utilizing the selective principle, and each has its own particular advantages. The Rotacurrent handles non-sticky products without back-mixing, while the Venturijet reduces the size of the cyclone and complementary dust collection equipment. Heyl & Patterson offers both types, but this article will focus on the Rotacurrent.Residence time in the Rotacurrent Flash Dryer varies for each particle according to its physical properties, as each particle has a residence time proportionate to its weight. This results in no overdrying, no overheating and no unnecessary processing risks or product degradation.In the Rotacurrent Flash Dryer, manufactured by Heyl & Patterson's Renneburg Division, each particle takes its own spiral path to the top of the drying column. The total length of the path constitutes the total residence time for the particle. Because of the spiral trajectory, residence time is independent of the dryer's actual column height. Fine particles have short residence times, while heavier ones have longer times. Extra-heavy, undesirable elements are separated and eliminated via the inspection-discharge trap at the base of the column of the dryer.Wet feed enters the Rotacurrent dryer through an airlock at the base of the drying column. It is injected into the main hot air stream by a conventional heat source. The wet feed then follows a spiral path up through the interior of the drying column.The discharge gate at the bottom of the column is counter-weighted so extra-heavy particles such as lumps, stones and stray metal are automatically discharged. This trap also permits visual inspection and physical access to the interior of the column. There is another inspection door at the top of the column.In some models, a secondary supply of hot, dry air is added to the main flow through adjustable louvers spaced along the inside of the cylinder. This secondary air stream produces a mechanical effect to reinforce the initial spiral air flow, and a thermal effect to compensate for the loss of drying potential as the main air flow picks up moisture and cools during the evaporation processThe processed product exits at the top of the column through the outlet scroll and into an extra high-efficiency cyclone. This cyclone accomplishes very effective separation, saving money and energy. The product leaves the cyclone through an airlock and a duct directed to storage or immediate use. Dryer exhaust is discharged by a fan and can be partially recycled for heat recovery.Turbulent heat transfer and thorough particle dispersion combine inside the Rotacurrent Flash Dryer for maximum thermal efficiency. The design of the column minimizes the loss of external heat radiation. Due to excellent heat transfer performance, column height and other dimensions are smaller than comparably sized, conventional dryers. As a result, building costs and insulation requirements are also lower.Because airflow moves the product rather than mechanical means, the Rotacurrent has minimal moving parts. Rotacurrent dryer routine maintenance activities are also enhanced by the operator's continuous visual inspection of the flow and by direct access to column interiors.To improve processing efficiency, a portion of previously dried product can be re-introduced into the primary stream of pasty of sticky product. The blended or "back-mixed" feed stock can generally be processed much more simply and effectively. In addition, a specially designed grinding and drying system can be supplied, and solvent-impregnated products may be processed in inert gases to achieve solvent recovery. All Rotacurrent Flash Dryers and Coolers can be supplied with control cubicles to house automatic controls and instrumentation.A Rotacurrent Flash Dryer is one of several machines available at Heyl & Patterson's research laboratory, to assure the complete testing of any product to a customer's processing specifications. 經(jīng)過20年的發(fā)展，在中國熱風(fēng)循環(huán)烘箱行業(yè)已形成一定數(shù)量的企業(yè)和生產(chǎn)規(guī)模。從區(qū)域分布的廠家，一些東半部是高于中西部地區(qū)；特別是在江蘇，浙江，上海企業(yè)相對(duì)集中，在江蘇省的常州市，一些熱風(fēng)循環(huán)烘箱生產(chǎn)企業(yè)已超過50。目前的常規(guī)熱風(fēng)循?隨著世界人口的不斷增長和城市化進(jìn)程的飛速發(fā)展，國家對(duì)環(huán)境保護(hù)政策實(shí)施力度不斷加強(qiáng)，使全國范圍內(nèi)污水處理率不斷提高，各城市紛紛建設(shè)污水處理廠，大、中、小型污水處理廠已達(dá)幾千座，而且還在迅速增加�！ 〉歉魑鬯幚韽S都面臨著如何處置每天產(chǎn)生的大量剩余污泥的問題。城市污泥產(chǎn)量的與日俱增和環(huán)境質(zhì)量標(biāo)準(zhǔn)的日 文章摘要：本文介紹了旋轉(zhuǎn)閃蒸干燥機(jī)干燥工藝過程、干燥機(jī)理，并介紹了閃蒸干燥機(jī)對(duì)多品種氧化鋁干燥的操作性及其設(shè)備特點(diǎn)。
多品種氧化鋁有別于冶煉級(jí)氧化鋁，它在晶形結(jié)構(gòu)、化學(xué)成分、外觀形狀、粒度分布等方面具有特色，因而有特殊物理化學(xué)性能，在多品種 非金屬礦與金屬礦、燃料礦一起被稱為材料工業(yè)的三大支柱。非金屬礦工業(yè)的發(fā)展?fàn)顩r是衡量國家科技進(jìn)步以及工業(yè)發(fā)達(dá)程度的重要標(biāo)志之一，許多工業(yè)發(fā)達(dá)國家的非金屬礦產(chǎn)值已超過金屬礦。由于非金屬礦產(chǎn)品獨(dú)特的物理化學(xué)性質(zhì)，非金屬礦產(chǎn)品的應(yīng)用領(lǐng)域幾乎滲透到各個(gè)工業(yè)部門，并在整個(gè)國民經(jīng)濟(jì)中起著愈來愈重要的作用氧化鉻綠專用旋轉(zhuǎn)閃蒸干燥機(jī)是一種氣流干燥系統(tǒng)的設(shè)計(jì)在許多行業(yè)堅(jiān)固的義務(wù)和多樣化。新的專利干燥技術(shù)，利用可調(diào)槳和空氣水壩創(chuàng)造固體傳熱優(yōu)化的空氣。通過閃蒸干燥機(jī)一次性干固體含量為5%的干燥效率可高達(dá)99%�！ ⊙趸t綠專用旋轉(zhuǎn)閃蒸干燥機(jī)允許熱空氣混合的濕產(chǎn)品進(jìn)入干燥機(jī)設(shè)置攪拌，減少干燥時(shí)間和斷塊。材 |
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