Equipment operation rules and construction of multi-stage spray drying tower

Equipment operation rules and construction of multi-stage spray drying tower

The multi-stage spray drying tower is a linger dryer; it is particularly suitable for material properties: high fat content, poor thermal stability, thermoplastic, moisture absorbing and high moisture content viscous products; dairy products, microencapsulated flavors, coffee, Non-dairy creamer, egg products, fruit and vegetable powder, seasonings, yeast, health products, protein and proteolysis products; antibiotics, vitamins, enzyme preparations, blood products, sugar products, various fermentation liquid products, etc.; dyes, pesticides, Inorganic, organic, tannic acid, molasses, water treatment agents, etc.; multi-stage spray drying tower works:

This is ideal for scale production of dust-free, free-flowing, fast-dissolving agglomerated granules; the average particle diameter adjustment range (D50) of agglomerate products is 0.1 - 0.35 mm; the bulk density of agglomerate products Adjustment range (0.35-0.6) g/ml; can produce direct compression tablets of drugs, health products granule products:

It can control the granular powder to keep the temperature lower during the whole drying process, suitable for the production of a wide range of heat sensitive products; thermoplastic, high fat content, viscous and hygroscopic products are ideally effective for long-term continuous production; drying is at lower exhaust temperature conditions The energy utilization rate of the traditional spray drying equipment is 10-15% higher; the flexible modular design, the complete set of equipment can be conveniently combined according to the actual needs of the customer; the equipment is compact and requires relatively small equipment installation space, very The cost of the drying tower workshop is greatly reduced; the construction of the multi-stage spray drying tower:

Vibrating fluidized bed:

The multi-stage spray drying tower is subjected to fluidized drying and cooling at the end of the Zui to obtain a dust-free granule product which meets the specified moisture content and temperature conditions.

The fluidized form uses a plug flow to provide uniform drying and cooling of the product, maintaining consistency in product properties.

The frequency and excitation force of the vibration motor are adjustable to control the fluidization drying/cooling time.

Fine powder reflux agglomeration:

The fine powder separated from the air is sent to the atomization zone of the drying tower by the positive pressure air, collides with the droplets and the wet particles, and adheres to form agglomerated particles.

The production of low-level agglomerated product fine powder can be sent to the built-in fluidized bed or vibrating fluidized bed.

Nozzle atomization characteristics:

High-pressure nozzle atomization, atomization angle and atomization pressure can be selected according to material viscosity and atomization droplet diameter; multi-nozzle structure can adjust the angle between nozzles to produce products with high degree of agglomeration and low degree of agglomeration; Low temperature air flow protection around the nozzle; drying tower:

The hot air flow in the center of the drying tower top of the multi-stage spray drying tower is vertically downward, and is fully mixed with the atomized droplets in the center of the hot air vent to enhance the heat transfer effect; the hot air jet diffuses to the bottom of the cone of the drying tower to bounce back upwards. The particles formed by the drying are separated from the air, and the air forms an annular air curtain on the wall of the tower in the upward movement, so that the moist powder is separated from the tower wall, and the powder deposition on the tower wall is prevented.

The fine powder is air-selected from the side exit of the top of the tower into the fine powder separator; the particles fall straight to the built-in fluidized bed at the bottom of the tower; the built-in fluidized bed:

The material is obtained in a built-in fluidized bed to obtain a stable and uniform fluidized drying/cooling in a low temperature and low humidity state. The zui greatly reduces the material deposition of the cone of the drying tower.

The fine powder is more easily selected to produce dust-free granule products.

Company Name: Changzhou Lima Drying Technology Co., Ltd. Contact: Zhou Youlai: 88968881
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