選擇工業(yè)干燥設備要考慮的因素

由于工業(yè)烘干機是一個重大的資本投資，任何組織，是值得仔細選擇和測試設備。幾十年來，可以測量機的生命，所以選用低效率的設備可以有一個長期的經濟健康狀況的影響，里面的設施。干燥設備的選擇主要是一項練習，即知識，經驗和科學都扮演著重要的角色。由于干燥過程中的復雜性，許多因素需要考慮并稱重。

在選擇工業(yè)烘干機，干燥的需要進行了初步分析。問您的材料，生產和^終產品質量的要求，和你的工廠的問題。

材料：材料的物理特性時，濕的或干的是什么？的粒度分布是什么？有毒，易燃，腐蝕性或磨損性的材料嗎？

干燥要求：材料中的水分結合（化學被困在里面的粒子），綁定（未連接到的顆粒，也稱為游離水分）或兩者？材料的初始和^終的水分含量是什么？什么是允許的^高干燥溫度，可能我的材料干燥時間嗎？什么是干燥：干燥溫度波動干燥過程的中途嗎？

生產要求：材料是否需要批量或連續(xù)處理？多少數量的材料必須干燥機每小時處理？什么樣的保留時間，實現(xiàn)高品質的^終產品？干燥前后的過程將如何影響我的機選擇？

^終產品的質量要求：材料的收縮，降低overdry或在干燥過程中受到污染？其^終含水率是如何統(tǒng)一？^終產品的溫度和體積密度是什么？將干燥后的材料給灰塵或需要溶劑回收嗎？

植物：有多少空間是在工廠嗎？如何溫暖，濕潤和清潔工廠的空氣嗎？什么樣的燃料和動力源，濕飼料來源和排氣的氣體噴出口，可在工廠中？什么級別的噪聲，振動，灰塵和熱量的損失，允許在工廠根據當地分區(qū)和環(huán)保法規(guī)嗎？

通過回答這些問題，你會排除許多機，為您的應用程序是不適合的。例如，物理或處理的材料的特性將消除一些干衣機。蒸汽管回轉干燥機是潮濕的，有粘性材料，如云母不是一個好的選擇。烘干機將材料旋轉和滾動，這種消極輸送不能移動粘性物質的入口區(qū)域前對血管壁和蒸汽管道的蛋糕。螺旋輸送器或間接的多圓盤式干燥機是更好的選擇。任一個單元提供正位移，可以快速移動云母遠離入口朝向出口。

其次，考慮足跡機，以滿足您的要求或所需的占地空間。排除任何機，不符合現(xiàn)有的空間，或將需要昂貴的工廠改建，擴建。剩余的候選人的資本和經營成本和性能進行比較。

如果選擇一個高性能的機升級您現(xiàn)有的干燥過程中，考慮現(xiàn)有的配套項目，如存儲和接收設備，輸送機和污染控制設備，可以處理新機的容量增加。

一旦干燥機的選擇已經縮小，與你的材料測試機，根據您的作業(yè)條件。

機測試，可進行中試試驗研究實驗室設施，并應建立：

為你的材料的^佳操作條件 每個機處理材料的物理特性 干燥后的材料的質量和特色 適當的機大小 基于這些結果，烘干機生產廠家Heyl和帕特森等設備，將滿足您的干燥需求制定詳細的建議。建議在手，你可以選擇一個機和干燥選項。討論的因素包括機的安裝和運營成本，本機的操作和維護要求。

Factors to Consider in Selecting Industrial Drying Equipment

Because an industrial dryer is a major capital investment for any organization, it pays to select and test the unit carefully.  Dryer life can be measured in decades, so the selection of inefficient equipment can have a long-term impact on the economic health of the facility that houses it.  The selection of drying equipment is predominantly an exercise in which knowledge, experience and science all play important roles.  Because of the complexity of the drying process, many factors need to be considered and weighed.

Before choosing an industrial dryer, conduct a preliminary analysis of your drying needs.  Ask questions about your material, the production and final product quality requirements, and your plant.

Material:  What are the material's physical characteristics when wet or dry?  What is the particle size distribution?  Is the material toxic, flammable, corrosive or abrasive?

Drying requirements:  Is the material's moisture bound (chemically trapped inside the particles), unbound (not attached to the particles, also called free moisture) or both?  What are the material's initial and final moisture contents?  What are the maximum permissible drying temperature and probably drying time for my material?  What is the drying curve: Will the drying temperature need to fluctuate midway through the drying process?

Production requirements:  Does the material need to be batch or continuously processed?  What quantity of material must the dryer handle per hour?  What retention time will achieve a high-quality final product?  How will the processes before and after drying affect my dryer choice?

Final product quality requirements:  Can the material shrink, degrade, overdry or become contaminated during drying?  How uniform must its final moisture content be?  What should the final product temperature and bulk density be?  Will the dried material give off dust or require solvent recovery?

Plant:  How much space is available in the plant?  How warm, humid and clean in the plant air?  What fuel and power sources, wet feed sources and exhaust gas outlets are available in the plant?  What levels of noise, vibration, dust and heat loss are permissible in the plant according to local zoning and environmental regulations?

By answering these questions, you will rule out many dryers that are not suitable for your application.  For instance, a material's physical or handling characteristics will eliminate some dryers.  A steam-tube rotary dryer is not a good choice for a wet, sticky material such as mica.  The dryer moves material by rotating and rolling it, and such passive conveying can't move a sticky material out of the inlet area before it cakes on the vessel wall and steam tubes.  A screw conveyor or indirect multiple disc dryer is a better choice.  Either unit provides positive displacement that can quickly move the mica away from the inlet and toward the outlet.

Next, consider the footprint or required floor space of the remaining dryers that meet your requirements.  Rule out any dryer that does not fit the existing space or would require a costly plant renovation or expansion.  Compare the capital and operating costs and performance of the remaining candidates.

If selecting a high-performance dryer to upgrade your existing drying process, consider whether existing ancillary items such as storage and receiving equipment, conveyors and pollution control equipment can handle the new dryer's increased capacity.

Once the field of dryer choices has been narrowed, test the dryers with your material under your operating conditions.

Dryer tests can be conducted in a pilot plant lab facility, and should establish:

The optimal operating conditions for your material How well each dryer handles the material's physical characteristics The material's quality and characteristics after drying The appropriate dryer size Based on these results, a dryer manufacturer such as Heyl & Patterson can develop detailed recommendations for equipment that will meet your drying needs.  With recommendations in hand, you can select a dryer and drying options.  Factors to discuss include the dryer's installation and operating costs, the dryer's operation and maintenance requirements.