Overview

BXF series closed-loop boiling drying unitIt is a drying and cooling equipment that can operate continuously, widely used for drying, cooling, and other operations of powder and fine granular materials in industries such as chemical, pharmaceutical, and food. It is particularly suitable for handling flammable and explosive powder and fine granular materials.

This system consists of vacuum feeding, heater, drying host, condenser, cyclone dust collector, fan, absorption tower, and nitrogen system. The entire drying process is carried out in a sealed environment under nitrogen protection, and the discharge is carried out in a sealed environment, which has the characteristics of no dust and high safety.

working principle

This system consists of vacuum feeding, heater, drying host, condenser, dust collector, fan, absorption tower, and nitrogen system. The entire drying process is carried out in a sealed environment under nitrogen protection, and the discharge is carried out in a sealed environment, which has the characteristics of no dust and high safety.

Feeding: The feeding of the equipment adopts differential feeding, with low working intensity, non stick material to the pipeline, and rapid feeding.

Drying: After the system is filled with nitrogen, the air inside the equipment is driven by a fan and enters a filter for filtration. After heating, it enters the main unit; In the hopper of the host, a two-phase exchange of heat and mass transfer occurs through extensive gas-solid contact (taking away the solvent and leaving heat); Then it enters the dust collector, and the fine powder is intercepted again; Subsequently, it enters the condenser for another two-phase exchange of heat and mass transfer (taking away heat and leaving solvent), and then returns to the fan to achieve circulation. There is no contact between the inside and outside of the equipment during drying.

Discharge: When discharging the equipment, open the flip plate at the bottom of the equipment barrel, use the pneumatic vacuum suction device, and pump the material to the storage position.

Features of the equipment

• After being dried by this system, the hot and humid gases containing solvents enter the condenser to condense the solvents in the gas (with a solvent recovery rate of over 95%), which can both recover the solvents and condense the dehumidified dry gas. The recovered solvent can be recycled again, which can save costs and will not cause environmental pollution due to exhaust emissions. The hot and humid gas undergoes condensation dehumidification, resulting in a lower absolute humidity inside the gas (compared to ordinary fluidized bed drying) and stronger drying ability. It is more suitable for moisture absorbing materials that are affected by humidity environments and is suitable for drying or cooling flammable and explosive materials such as MBS.
• 2. This system is a fully enclosed structure, and the equipment is filled with inert gas (such as nitrogen) inside. When drying anaerobic materials or materials containing flammable and explosive solvents, there is no oxygen in the gas, making it impossible to burn or oxidize. This can effectively prevent equipment from catching fire or exploding during production, making it safer than ordinary equipment.
• 3. When the system is working, the unique air separation design reduces the clumping phenomenon of the product, ensures the boiling height, and makes the contact between the hot air and the coarse and fine particles more complete, resulting in a faster drying rate.
• 4. This system achieves discharge under fully enclosed conditions, greatly reducing the labor intensity of workers and ensuring that there is no dust in the workshop. The workshop environment is good and the degree of automation is high.
• 5. The fluidized heat transfer is uniform, without overheating or dead corners, and the product quality is good.
• 6. Adjustable weir plate design for export, adjustable material layer thickness to increase production.
• 7. This system has a high degree of automation and is easy to disassemble, clean, and maintain.