Vacuum rake dryer application range

The vacuum rake dryer is a novel horizontal intermittent vacuum drying equipment. Wet materials undergo conduction evaporation, with a scraper agitator continuously removing material from the heated surface and creating a circulating flow within the container. After moisture evaporates, it is extracted by a vacuum pump. This machine employs a large-area jacketed heating method, resulting in a large heat transfer surface and high thermal efficiency. The agitator ensures continuous circulation of the material within the drum, further improving the uniformity of heating and enabling the successful drying of slurry, paste, and pasty materials.

 

The vacuum Rake dryer has a cylindrical body with three layers. The heating medium in the middle jacket can be circulating heat transfer oil (pressure <0.3 MPa gauge pressure) or steam (pressure <0.3 MPa gauge pressure). The outer layer is made of ultra-fine glass wool, providing excellent insulation and low energy consumption. Materials are fed into the inner layer. It is particularly suitable for drying materials at risk of oxidation and heat-sensitive materials. It does not damage crystalline materials during the drying process. Its advantages are even more pronounced for materials with strictly limited metal ions and materials requiring the recovery of volatile (or toxic) substances.

 

The vacuum rake dryer is simple to operate, facilitates material loading and unloading, significantly reduces the labor intensity of workers, and also reduces environmental pollution during the drying process, improving product quality and meeting the requirements of Good Manufacturing Practices (GMP) for pharmaceuticals.

Applications:

 

1. Drying of materials in the pharmaceutical, food, and chemical industries.

 

2. Suitable for slurry, paste, and powder materials.

 

3. Heat-sensitive materials requiring low-temperature drying. 4. Easily oxidizable, explosive, highly irritating, or extremely toxic materials.

 

5. Materials requiring the recovery of organic solvents.