领会一种传导式枯燥机的任务道理-利来国际官网

江苏前锋枯燥工程无限公司

国度高新手艺企业 / 行业规范主草拟单元 / 中国枯燥装备行业协会副理事长 / 中国枯燥装备十强企业

前锋旗下产物专题网
征询热线:

400-8585-815

消息中间news center
行业消息 以后地位:喜玩兔 > 消息中间 > 行业消息

领会一种传导式枯燥机的任务道理

信息来历: | 宣布日期: 2012-12-28 16:56:40 | 阅读量:638
关头词:领会一种传导式枯燥机的任务道理

领会一种传导枯燥机的任务道理

一种枯燥机利用了更多的能量比大大都其余散装物料处置装备。一种枯燥机,能够节活动力,进步动物的出产力,是一种传导枯燥机。一看若何传导与其余枯燥方式的第一步是领会烘干机工程,和它是不是合适枯燥的须要。一个传导枯燥机能够处置热敏感的资料,节制枯燥进程中的氛围,以确保^终产物的品质,乃至能够利用余热源,以削减动力本钱。

heyl帕特森供给了一个定制设想的传导枯燥处置计划中的multidisc的热处置器。

从湿物料蒸发液体,凡是须要增添热量。此热量被通报到资料若何取决于枯燥方式。这些方式包含:

传导 - 传输中经由进程两个外表之间的打仗的热和能量 打仗加热的气体传输热量条约 - 辐射 - 通报经由进程裸露到热外表的热量 对流凡是被称为间接的传热方式,由于该资料打仗的加热介质。传导和辐射凡是被称为间接换热的方式,由于这类资料不打仗的加热介质。在导通枯燥器中的间接热通报合适详细的资料和枯燥请求。

一个典范的传导枯燥器是一个金属壁,是牢固的或扭转的热夹套容器。在某些环境下,枯燥器装有搅拌器。冷凝蒸汽,热水,熄灭气体,热油或电加热的外衣,它的热量传输到枯燥器外表。经由进程传导,热量通报经由进程烘缸外表的湿资料。搅拌器或容器的扭转,挪动和夹杂的资料床,消弭在床内的湿度梯度和增添的枯燥速度。由于资料的枯燥,汽化的水份加入容器。

的传导枯燥器的外表的温度能够范围从上面的冷冻(冷冻枯燥的化学品,邃密化学品,药品和食物产物如咖啡)枯燥非热敏感资料,如某些黏土和碳酸盐资料须要间接传热。的枯燥机凡是是合适用于轻细的负压下,在惰性氛围中处置资料。是以枯燥器能够避免挥发物的溶剂收受接管进程中的热氛围夹杂,并能够避免从氧化性,比方无机物和食物产物轻易分化的资料。

由于不气流打仗资料外部的传导枯燥机,烘干机比很多对流枯燥机供给了更好的粉尘节制。并且不像的对流枯燥机,传导枯燥器也耗损只要尽能够多的燃料,以坚持所需的枯燥的温度,这象征着,仅是从资料枯燥的枯燥器排挤的热负荷。在对流枯燥器中,热负荷是从资料和热气流,从而下降了枯燥器的效力。由于传导枯燥机能够利用各类热源,包含,如蒸汽从汽锅的余热,烘干机能够下降动力本钱的持久。

传导枯燥机可在差别范例的批处置和持续处置。一个批处置传导枯燥机蒸发和枯燥的处置计划,浆料,浆料及颗粒。它也能够在真空下操纵。的干衣机的燃料需要的范围从1.5-3.0磅的蒸汽每磅水蒸发掉,这取决于资料的所需的^终水份含量。本机的动力本钱取决于搅拌或撤退的资料和利用法式的需要。用于充电和放电的资料和后续清算的休息是枯燥器的首要的运营本钱。一个批处置机是从尝试室范围的巨细,范围化出产。

两种范例的批量传导机可供挑选:搅拌锅。

的搅拌枯燥机包含一个程度或垂直的热用桨状或带状搅拌器的夹套容器。桨或色带搅拌的资料,以赞助从血管壁的传热。的干衣机能够处置小的湿资料的几近任何情势的,如溶液,淤浆,糊剂和颗粒剂的产量。搅拌使枯燥器不合适某些可降解资料,如茶叶,糖和别的的附聚的,纤维状或结晶产物。单元任务在常压或加压下轻细的负压。枯燥器是易于洁净,和搅拌器的音高能够调剂,以削减资料的活动,并增添在烘干机中的资料的滞留时候。

泛机的程度,牢固热夹套容器和一台搅拌锅。在某些环境下,被加热油锅。该平移振动或扭转,以赞助将热量从血管壁。的干衣机能够疾速枯燥大批次的非粘性资料,如自在活动的粉末,颗粒剂,晶体和纤维,并且能够收受接管溶剂。的干衣机的搅拌建立一个研磨感化,能够下降一些资料,以是枯燥器能够请求一个尘埃搜集器。本机也能够在真空前提下任务。删除冲刷液洗濯后的锅,能够花费时候。

heyl和帕特森设想和制作机,可供给多年的无端障运转,并供给尝试室测试举措措施。由于咱们自界说工程师每个multidisc的热处置器和坚持原始图纸,咱们能够按照本来的规格,烘干机办事。咱们担任送货上门,装置和启动您的装备,您的任务职员,并供给开端的操纵申明。

咱们也制作商间接供给,以知足原始装备规格,以确保任何进级或维修将到达或跨越原有装备的机能程度。 heyl帕特森供给出色的客户撑持之前,时代和以后,咱们供给的每个产物的采办。

understanding how a conduction dryer works

a dryer uses much more energy than most other bulk material processing equipment.  one dryer that can save energy and enhance a plant's productivity is a conduction dryer.  a look at how conduction compares with other drying methods is the first step in understanding how such a dryer works and whether it's right for your drying needs.  a conduction dryer can handle heat-sensitive materials, control a drying process atmosphere to ensure final product quality, or even use a waste heat source to cut energy costs.

heyl & patterson offers a custom-engineered conduction drying solution in the multidisc thermal processor.

driving off the liquid from wet material typically requires adding heat.  how this heat is transferred to the material depends on the drying method.  these methods include:

conduction - transferring heat and energy by contact between two surfaces convention - transferring heat by contact with a heated gas radiation - transferring heat by exposure to a hot surface convection is often called a direct heat transfer method because the material contacts the heating media.  conduction and radiation are typically called indirect heat transfer methods because the material doesn't contact the heating media.  the indirect heat transfer in a conduction dryer suits specific materials and drying requirements.

a typical conduction dryer is a metal-walled, heat-jacketed vessel that is stationary or rotating.  in some cases, the dryer is equipped with an agitator.  condensed steam, hot water, combustion gas, hot oil or electricity heats up the jacket, which transfers the heat to the dryer surface.  by conduction, the heat transfers through the dryer surface to the wet material.  the agitator or the vessel's rotation moves and mixes the material bed, eliminating moisture gradients within the bed and increasing the drying rate.  as the material dries, the vaporized moisture exits the vessel.

the temperature of the conduction dryer's surface can range from below freezing (for freeze-drying chemicals, fine chemicals, pharmaceuticals and food products such as coffee) for drying non-heat sensitive materials such as some clays and carbonate materials that require indirect heat transfer.  the dryer is typically suitable for handling materials under slight negative pressure and in an inert atmosphere.  thus the dryer can prevent volatiles from mixing with hot air during solvent recovery and can prevent easily decomposed materials from oxidizing, such as organics and food products.

because no airflow contacts the material inside the conduction dryer, the dryer provides better dust control than many convection dryers.  and unlike a convection dryer, the conduction dryer also consumes only as much fuel as needed to maintain the temperature required for drying, which means that the heat load exiting the dryer is only from the material it dries.  in a convection dryer, the heat load is from both the material and hot airflow, which reduces the dryer's efficiency.  and because the conduction dryer can use various heat sources, including waste heat such as steam from a boiler, the dryer can cut energy costs over the long term.

conduction dryers are available in various types for both batch and continuous processing.  a batch conduction dryer can evaporate and dry solutions, slurries, pastes and granules.  it can also operate under vacuum.  the dryer's fuel requirements range from 1.5-3.0 pounds of steam per pound of water evaporated, depending on the material's required final moisture content.  the dryer's energy costs depend on the material and the application's requirements for agitation or evacuation.  the labor for charging and discharging the material and subsequent cleanup is the dryer's major operating cost.  a batch dryer is available in sizes from lab-scale to full-scale production.

two types of batch conduction dryers are available:  agitating and pan.

an agitating dryer consists of a horizontal or vertical heat-jacketed vessel with a paddle or ribbon agitator.  the paddle or ribbon agitates the material to aid heat transfer from the vessel wall.  the dryer can handle small production volumes of nearly any form of wet material, such as solutions, slurries, pastes and granules.  the agitation makes the dryer unsuitable for some degradable materials such as tea leaves, sugar and other agglomerated, fibrous or crystalline products.  the unit operates at atmospheric pressure or under slight negative pressure.  the dryer is easy to clean, and the agitator's pitch can be adjusted to reduce material flow and increase the material's retention time in the dryer.

a pan dryer has a horizontal, stationary heat-jacketed vessel and a flat agitating pan.  in some cases, the pan is heated.  the pan vibrates or rotates to help transfer heat from the vessel wall.  the dryer can quickly dry large batches of nonsticky materials such as free-flowing powders, granules, crystals and fibers, and can recover solvents.  the dryer's agitation creates a grinding action that can degrade some materials, so the dryer can require a dust collector.  the dryer can also operate under vacuum.  removing a washdown solution from the pan after cleaning can be time-consuming.

heyl & patterson designs and builds dryers to provide years of trouble-free operation, and offers facilities for laboratory testing.  because we custom engineer each multidisc thermal processor and maintain the original drawings, we can service your dryer according to its original specifications.  we oversee delivery, installation and start-up of your equipment, and provide preliminary operating instructions to your personnel.

we also provide manufacturer-direct parts that meet original equipment specifications, ensuring that any upgrades or repairs will meet or exceed the original equipment's performance levels.  heyl & patterson provides superior customer support before, during and after the purchase of every product we supply.

相干文章
language:

利来网 copyright(c)2019 江苏前锋枯燥工程无限公司(原常州前锋枯燥装备) 利来国际官网的版权申明 手艺撑持:-江苏东网科技 收集撑持: [背景办理]

top