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以前的博客文章中提到的，Rotacurrent和Venturijet的閃蒸干燥機利用選擇性的原則運作，每個人都有自己獨特的優(yōu)勢。處理的非粘性Rotacurrent產(chǎn)品沒有返混，中而Venturijet會降低旋流器的大小和互補集塵設備。 Heyl帕特森提供兩種類型，但本文將重點對Rotacurrent。的Rotacurrent閃蒸干燥機中的停留時間變化，根據(jù)其物理性質，對每個粒子，每個粒子的停留時間，它的重量成比例。這將導致在沒有過度干燥，無過熱和處理任何不必要的風險或產(chǎn)品降解。在閃蒸干燥機的Rotacurrent，制造Heyl＆Patterson的Renneburg分部，每個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，構成為顆粒的總的停留時間。由于螺旋軌跡，停留時間是干燥器的實際柱高度無關。細顆粒具有短的停留時間，而較重的有較長的時間。特強，不良份子分離和消除在干燥器的列的基礎上通過檢查放電陷阱。濕進料進入的Rotacurrent的的機通過在干燥塔的基礎上的氣閘。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部。在蒸餾柱底部的排出門是反加權，所以額外的重粒子如腫塊，寶石和雜散金屬被自動排出。這的陷阱也允許目視檢查和物理訪問的列的內部。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被添加到主流程通過可調節(jié)百葉窗沿氣缸的內部隔開。該二次空氣流產(chǎn)生一個機械的效果，補強的初始螺旋空氣流，和熱效應的主空氣流拿起水分和在蒸發(fā)過程中冷卻，以補償損失的干燥潛力經(jīng)加工的產(chǎn)品在通過出口渦旋盤，并進入一個額外的高效率的旋流器的列的頂部排出。這旋風實現(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存或立即使用的導管。烘干機排出廢氣由一個風扇，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合內的Rotacurrent的閃存機為^高熱效率。列設計的外部的熱輻射的損失^小化。由于良好的熱傳導性能，柱的高度，其他尺寸小于同等大小的，傳統(tǒng)的烘干機。其結果是，建設成本和絕緣要求也較低。由于氣流移動的產(chǎn)品，而不是機械的手段，Rotacurrent^少的移動部件。 Rotacurrent機的日常維護活動也提高了運營商的流動和連續(xù)的視覺檢查，通過直接訪問柱內飾。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。混紡或“返混”的原料通常可以更加簡單且有效地進行處理。此外，一個特別設計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化控制及儀器儀表。一個Rotacurrent閃蒸干燥機是幾臺機器，可在Heyl和帕特森的研究實驗室之一，任何產(chǎn)品的完整的測試，以確保客戶加工各種規(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.熱風干燥設備適用于塑料凹版及柔性版印刷油墨、溶劑型光油的干燥，還可加速水性油墨、光油的干燥。使用熱風干燥設備干燥技術所需要的裝置：
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