一 应用
适用于高温下易分解，聚合和变质的热敏性物料的低温干燥，被广泛的采用在制药、化工、食品、电子等行业。
二 原理
所谓的真空干燥，就是将干燥物料处在真空条件下，进行加热干燥，并利用真空泵进行抽气抽湿，加快了干燥速率。
三 特点
1.真空下物料溶液的沸点降低，使蒸发器的传热推动力增大，因此对一定的传热量可以节省蒸发器的传热面积。
2.蒸发操作的热源可采用低压蒸汽或废热蒸汽。
3.蒸发器热损失少。
4.在干燥前进行干燥处理，干燥过程中无任何不纯物混入，符合GMP要求。
5.属于静态真空干燥器，故干燥物料的形体不会破坏。
One application
Applicable to high temperature decomposition, dry heat sensitive material polymerization and metamorphose, is widely used in pharmaceutical, chemical, food, electronics and other industries.
Two principle
The so-called vacuum drying, is to dry material in vacuum conditions, heating drying, and use vacuum pump pumping suction wet, accelerate the drying rate.
Three characteristics
1. under vacuum, the boiling point of the material solution is reduced, so that the heat transfer driving force of the evaporator is increased. Therefore, the heat transfer area of the evaporator can be saved by a certain heat transfer.
2. evaporation heat source can use low pressure steam or waste heat steam.
The heat loss of 
3. evaporator is less.
4. drying before drying, without any impurity in the drying process, meet the requirements of GMP.
5. belongs to the static vacuum dryer, so the dry material form will not destroy.
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