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Product details:
The vacuum rake dryer is a novel horizontal intermittent vacuum drying equipment. Wet materials are evaporated through conduction, and a scraper stirrer is used to continuously remove the materials on the hot surface, forming a circulating flow in the container. After the water evaporates, it is pumped out by a vacuum pump. Vacuum rake dryer is widely used in organic semi-finished products and fuel drying operations in the chemical industry.
The vacuum rake dryer device uses a steam jacket to indirectly heat materials and exhausts them under high vacuum, making it particularly suitable for drying materials that are not resistant to high temperatures, are prone to oxidation at high temperatures, or are prone to powder production during drying (such as various fuels), as well as materials that require the recovery of steam or solvents removed during the drying process. The moisture content or solvent content of the dried material in the vacuum rake dryer can reach up to 90%, while the lowest is only 15%. The dried material can be in the form of slurry, paste, granular, powdery, or fibrous. The moisture content of these materials after drying generally reaches 0.1%, or even 0.05%. The dried material is added from the center of the shell, and under the stirring of the constantly rotating rake teeth, the surface of the material constantly updates when it comes into contact with the shell wall. The dried material is indirectly heated by steam, causing the moisture in the material to vaporize. The vaporized moisture is promptly extracted by a vacuum pump. The machine can use both sandwich and rake teeth heating methods simultaneously, with a larger heat transfer area and higher thermal efficiency, resulting in higher drying efficiency. Due to the high degree of vacuum operation, the surface water vapor pressure of the dried material is much higher than the water vapor pressure in the evaporation space inside the drying machine, which is conducive to the discharge of internal and surface moisture of the dried material, and facilitates the movement of water molecules in the dried material to achieve the purpose of drying.
Application:
Drying of the following materials is carried out in industries such as pharmaceuticals, food, and chemicals:
Suitable for paste like, paste like, and powdery materials.
Require low humidity and dry heat sensitive materials.
Easily oxidizable, explosive, strongly irritating, and highly toxic materials.
Require the recycling of materials containing organic solvents.
characteristic:
The interlayer and mixing shaft of this machine are heated simultaneously, with a large heat transfer surface and high thermal efficiency.