A brief history of the development of vacuum drying equipment

A brief history of the development of vacuum drying equipment

Since ancient times, humans have been accustomed to using natural heat sources and natural ventilation to dry materials, which are completely restricted by natural conditions and have low production capacity. With the development of production, they are gradually replaced by artificially controllable heat sources and mechanical ventilation and dehumidification. Spray Dryers In the early 20th century, dairy production began to use spray dryers, which provided a powerful tool for large-scale drying of liquid materials. Beginning in the 1940s, with the development of fluidization technology, high-strength, high-productivity fluidized bed and airflow dryers appeared one after another. And freeze-sublimation, radiation and dielectric dryers provide new means to meet special requirements. In the 1960s, far-infrared and microwave dryers were developed.

Vacuum Drying Equipment Multilayer Vacuum Dryer

Due to the uniform residence time distribution of the multi-layer vacuum dryer, the actual drying time required is shorter than that of the single-layer fluidized bed. It can improve the uniformity of the water content of the dried product, and it is easy to control the drying quality of the product. However, the multi-layer vacuum dryer increases the complexity of the equipment structure due to the increase in the number of layers and the formation of a stable fluidized state between the layers. For materials to remove bound moisture, it is appropriate to use a multi-layer fluidized bed.

The multi-layer vacuum dryer is suitable for drying powder and granular materials such as polyester chips, sodium salicylate, aminopirin, oxytetracycline, chlortetracycline, tetracycline, tablet starch granules, powdered sugar, feed, plastic, grain, etc.

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The horizontal multi-chamber vacuum dryer overcomes the disadvantages of the complex structure of the multi-layer fluidized bed and the resistance of the layered bed. One room backwards. The dried materials are discharged from the discharge port of the rear drying chamber, which can dry various difficult-to-dry granular materials and heat-sensitive materials, and is gradually extended to powder materials.

Horizontal multi-chamber vacuum dryer is suitable for polyvinyl chloride resin, polypropylene resin, nylon 1010, o-chlorobenzoic acid, tetracycline, oxytetracycline, chloramphenicol, liver powder, powdered sugar, citric acid, oxalic acid, chlorinated rubber Wait for the

m drying equipment horizontal multi-chamber vacuum dryerwww.superbheater.comwww.superbheater.commaterial to dry.

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