回轉(zhuǎn)式烘干機：直接干燥法與間接干燥-金陵干燥

在確定什么類型的旋轉(zhuǎn)干燥器的重要因素之一是正確的一定的過程是直接或間接熱的用法。旋轉(zhuǎn)式干燥機是利用無論是直接對流式傳熱或間接傳熱，熱表面干燥設(shè)備內(nèi)提供的熱量通過傳導(dǎo)和輻射能力。直接或間接干燥的測定是或然以被干燥的材料，在工藝條件和所需的^終產(chǎn)物的性質(zhì)。

Heyl & Patterson的Renneburg的司可以生產(chǎn)兩種類型的機，并提供了一個試驗工廠的測試實驗室，以確定較佳的技術(shù)和設(shè)備，為客戶的業(yè)務(wù)。

對于直接干燥的目的，熱空氣進入所述旋轉(zhuǎn)的缸體的一端，在其另一端穿過它并退出。機票焊接到氣缸升降機的內(nèi)部壁和淋浴的濕物料，將它與熱空氣直接接觸。航班的配置取決于被加工的材料的特性。這種配置被定制，以有效地處理的產(chǎn)品，因為它流經(jīng)干燥器。也根據(jù)客戶的干衣機的容量和特性的產(chǎn)品的長度和直徑的氣缸。

通常情況下，轉(zhuǎn)筒干燥器充滿氣缸容積的10％-15％。氣缸的長度通常是至少4倍的直徑，以實現(xiàn)產(chǎn)品和空氣流之間的有效的熱傳遞和溫度平衡。

直接熱旋轉(zhuǎn)干燥器中的氣流可以是計數(shù)器或平行于干燥器內(nèi)的材料的搬送。并聯(lián)均流機暴露在潮濕的飼料原料，以熱門的空氣溫度。他們是非常有效的處理含水量高的污泥濾餅。由于快速的熱交換，有顯著的蒸發(fā)冷卻的產(chǎn)品。這種冷卻效應(yīng)使干燥的寬范圍的材料沒有熱降解的材料具有不同的熱敏感性。

逆流烘干機暴露在干燥的材料的^高氣溫。這種配置通常是好的過程，需要一個特定的升高放電產(chǎn)物的溫度或水分含量非常低。

間接加熱型回轉(zhuǎn)干燥機是常用的產(chǎn)品粒徑小，可能會導(dǎo)致產(chǎn)生過多的灰塵。它們也可以用來為需要極端控制干燥器排氣的進程。間接熱干燥器取決于傳導(dǎo)和輻射的熱傳遞，從氣缸壁的濕料。一個靜止?fàn)t周圍的旋轉(zhuǎn)滾筒和加熱汽缸壁。需要很少或根本沒有氣流通過烘干機。間接旋轉(zhuǎn)干燥器，可以只提供一個有限的量的傳熱面積。他們不能有效地處理，往往堅持的加熱氣缸壁的材料。

Heyl & Patterson轉(zhuǎn)筒干燥器的設(shè)計和建造，以客戶的要求。因為我們自定義的工程師，回轉(zhuǎn)烘干機，并保持原來的圖紙，我們可以根據(jù)原來的規(guī)格，升級或維修服務(wù)的任何機。 Heyl & Patterson提供卓越的客戶支持之前，期間和之后，我們提供的每一個產(chǎn)品的購買。

Rotary Dryers: Direct Drying vs. Indirect Drying

One of the most important factors in determining what type of Rotary Dryer is right for a certain process is the usage of direct or indirect heat. Rotary Dryers are capable of utilizing either direct convection style heat transfer or indirect heat transfer, in which hot surfaces within the dryer provide heat by conduction and radiation. The determination of direct or indirect drying is contingent on the properties of the material to be dried, the process conditions and the desired end product.

Heyl & Patterson's Renneburg Division can manufacture either type of dryer, and offers a pilot plant testing lab to determine the best technology and equipment for a customer's operations.

For direct drying purposes, hot air enters the rotating cylinder at one end, passes through it and exits at the other end. Flights welded to the internal walls of the cylinder lift and shower the wet material, bringing it into direct contact with the hot air. The configuration of the flights depends on the characteristics of the material being processed. This configuration is customized to efficiently handle the product as it flows through the dryer. The length and diameter of the cylinder are also customized according to the capacity of the dryer and the characteristics of the product.

Typically, Rotary Dryers are filled to 10-15% of cylinder volume. The length of the cylinder is usually at least four times the diameter in order to achieve efficient heat transfer and temperature equilibrium between the product and the air stream.

The airflow in direct heat rotary dryers can be either counter or parallel to the conveyance of the material inside the dryer. Parallel flow dryers expose the wet feed material to the hottest air temperature. They are very efficient for handling high moisture content sludge and filter cakes. Because of the rapid heat exchange, there is significant evaporative cooling of the product. This cooling effect allows for drying a wide range of materials with varying heat sensitivities without thermally degrading the materials.

Counter flow dryers expose the driest material to the highest air temperature. This configuration is usually best for processes that require a specific elevated discharge product temperature or very low moisture content.

Indirect heat Rotary Dryers are most frequently used for products with small particle sizes that could result in excessive dust generation. They are also used for processes that require extreme control of the dryer exhaust. Indirect heat dryers depend on conduction and radiation to transfer the heat from the cylinder walls to the wet feed. A stationary furnace surrounds the rotary cylinder and heats the cylinder walls. Little or no airflow is required to pass through the dryer. Indirect rotary dryers can provide only a limited amount of heat transfer area. They cannot efficiently handle materials that tend to stick to the heated walls of the cylinder.

Heyl & Patterson Rotary Dryers are designed and built to the customer's requirements. Because we custom engineer each Rotary Dryer and maintain the original drawings, we can service any dryer with upgrades or repairs according to its original specifications. Heyl & Patterson provides superior customer support before, during and after the purchase of every product we supply.

聯(lián)系方式：

公司名稱：江蘇金陵干燥科技有限公司

聯(lián) 系 人：查經(jīng)理

電      話：13906113700

網(wǎng)      址：http://www.jinlingdry.com

地      址：江蘇省常州市鄭陸鎮(zhèn)三河口