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美国Bepex流化床干燥机介绍

信息来源: | 发布日期: 2013-01-25 09:34:29 | 浏览量:218041

摘要:

流化床干燥机,直接干燥法原则之间的直接接触加热的气体/空气和影响传热和传质的产品。该工艺气流通过流化床空气腔室通过气体分布板,其中保留上述的固体进入。流化床干燥器此流化过程中是有效的这样的操作,如干燥,加热,冷却,煅烧反应,除尘,或附聚...

流化床干燥机,直接干燥法原则之间的直接接触加热的气体/空气和影响传热和传质的产品。该工艺气流通过流化床空气腔室通过气体分布板,其中保留上述的固体进入。流化床干燥器此流化过程中是有效的这样的操作,如干燥,加热,冷却,煅烧反应,除尘,或附聚。

静止流化床干燥机有没有移动部件。流态化使产品通过流化床连续流动,在相对端溢出。流化床干燥机中的多个区域允许在同一单元中的加热和冷却。每个区域都有独立控制温度,露点和流化速度。停留时间可以变化通过调节堰的高度为每个区域中的单元的四倍。

非常适合易碎或软团聚颗粒的流化床干燥机的温和但有效的干燥作用。它的工作原理^好的干燥产品,在一个狭窄的颗粒大小范围。

增强的传热和传质,通过紧密接触,并与流化气体混合
热敏感材料可以在的沸点以上的温度下干燥,由于减少了蒸汽压力
间接传热表面可以被添加以增加容量或减少床面积
闭式循环流化床系统,惰性气体可以回收,处理有毒产品,氧气敏感的产品或易燃溶剂的湿材料。

流化床干燥机的应用
聚合物:PET,聚丙烯,PVC
无机化学品:盐,钾肥,磷酸盐
食品:糊精,葡萄糖,咖啡,酵母菌,凝聚物,洗涤剂,Instantized食品,橡胶添加剂
制药:阿司匹林,对乙酰氨基酚,氨基酸

FLUID BED DRYER

The Fluid Bed Dryer operates under the direct drying principle of direct contact between a heated gas/air and the product to effect heat transfer and mass transfer. The process gas stream enters through the fluid bed air plenum passing through the gas distributor plate, which retains the solids above. This fluidization process of the fluid bed dryer is effective for such operations as drying, heating, cooling, calcining, reacting, dedusting, or agglomerating.

The stationary fluid bed dryer has no moving parts. Fluidization enables the product to flow continuously through the fluid bed, overflowing at the opposite end. Multiple zones in the Fluid Bed Dryer allow heating and cooling in the same unit. Each zone has independent control for temperature, dew point and fluidizing velocity. Residence time can vary up to four fold in the unit by adjusting the weir height for each zone.

The Fluid Bed dryer's gentle but efficient drying action is well suited for friable or soft agglomerated particles. It works best drying products within a narrow particle size range.

Enhanced heat and mass transfer through intimate contact and mixing with the fluidizing gas
Heat sensitive materials can be dried at temperatures lower than the boiling point due to reduced vapor pressure
Indirect heat transfer surfaces can be added to increase capacity or reduce bed area
Closed cycle Fluid Bed systems, in which inert gases can be recycled, are available to handle toxic products, oxygen sensitive products, or flammable solvent wetted material.


APPLICATIONS OF THE FLUID BED DRYER

Polymers
PET
Polypropylene
PVC

Inorganic Chemicals
Salt
Potash
Phosphates

Foods
Dextrin
Dextrose
Coffee
Yeasts
Agglomerated Products
Detergents
Instantized foods
Rubber additives

Pharmaceuticals
Aspirin
Acetaminophen
Amino acids

Pharmaceuticals
MAP
NPK
urea

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