Vibrating Fluid Bed Dryer

Vibrating fluidized bed dryer is a type of drying equipment that utilizes vibratory fluidized bed technology and finds extensive application in industries such as chemical, pharmaceutical, and food processing for the drying of solid granules materials. This vibrating fluidized bed dryer works by placing the material onto the bed layer and employing the principles of vibrational dynamics to suspend the particles within the bed layer in the airflow, thereby achieving the drying purpose.

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Description Of Vibrating Fluid Bed Dryer

The vibrating fluidized bed dryer is essentially a conventional fluidized bed dryer with mechanical vibration applied. By adjusting the vibration parameters, the ZLG dryer is capable of achieving a more ideal piston flow in continuous operation, thus reducing the tendency for material mixing found in ordinary fluidized bed dryers. Additionally, the introduction of vibration greatly improves the issue of uneven moisture content in the dried particles, as well as mitigates problems such as agglomeration and caking that occur when the material moisture content is slightly higher.

Advantage Of Vibratory Fluidized Bed Dryer

Reduction in Minimum Fluidization Velocity

The application of vibration can significantly reduce the minimum fluidization velocity, leading to a decrease in air demand and consequently reducing dust entrainment. This reduction in air demand allows for downsizing of auxiliary equipment such as heat sources, fans, and cyclone separators, resulting in a substantial decrease in the overall cost of the equipment and energy savings.

Reduction in Minimum Fluidization Velocity

The application of vibration can significantly reduce the minimum fluidization velocity, leading to a decrease in air demand and consequently reducing dust entrainment. This reduction in air demand allows for downsizing of auxiliary equipment such as heat sources, fans, and cyclone separators, resulting in a substantial decrease in the overall cost of the equipment and energy savings.

Improved Material Dispersion:

Vibration aids in dispersing materials. By selecting appropriate vibration parameters, materials prone to agglomeration or channeling in ordinary fluidized beds can be smoothly fluidized and dried.

Improved Material Dispersion:

Vibration aids in dispersing materials. By selecting appropriate vibration parameters, materials prone to agglomeration or channeling in ordinary fluidized beds can be smoothly fluidized and dried.

Noise Generation:

Vibration generates noise, which is a consideration in the operation of the equipment. Additionally, certain components of the equipment may have shorter lifespans compared to other types of drying equipment.

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Why Choose Our Vibratory Fluidized Bed Dryer

At Machtech Industry, we have boldly improved upon the traditional structure of vibratory fluidized bed dryer in several key areas.

Segmented Air Inlet

Our equipment adopts a segmented air inlet design, featuring pre-drying, intense drying, and cooling sections.

Downward Air Inlet

Departing from the traditional deflection air inlet method, we have opted for a downward air inlet design to ensure uniform and rational distribution upon reaching the bed surface. This ensures even heating of materials, uniform product drying, and minimizes system resistance.

Rapid Assembly Structure

Utilizing a quick-assemble upper and lower bed body structure, our equipment facilitates easy and fast cleaning of various parts of the main unit.

Expanded Body Box Upper Bed

By expanding the body box of the upper bed, we have reduced the exhaust ducts on the bed, enabling centralized discharge, reducing cleaning points, and improving drying efficiency.

Tongue-Type Bedplate Structure

Considering the drying characteristics of materials, we have employed a tongue-type bedplate structure in the fluidized bed. This structure ensures consistent airflow, low pressure drop, uniform and rapid material advancement, and eliminates material leakage.

Drying and Cooling Combined Bed Structure

Our system integrates drying and cooling in the bed structure, providing high yield and strong adjustability. Additionally, in the cooling system, we incorporate a refrigeration dehumidification device to forcibly cool and dehumidify the inlet air, ensuring effective material cooling and preventing moisture regain during the cooling process.

Specification Of Vibrating Fluid Bed Dryer

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Working Principle Of Vibrating Fluid Bed Dryer

Vibrating Fluid Bed Dryer working principle

The vibratory fluidized bed operates by introducing vibration to the fluidized material, resulting in a tossing and loosening process that integrates with fluidization to achieve a low bed fluidization effect. Unlike traditional fluidized bed dryers where material transport and fluidization rely solely on air (or hot air) circulation, vibratory fluidized bed dryers primarily utilize vibration. This approach reduces the minimum fluidization velocity of materials, particularly near the bottom where particles tend to fluidize first, improving the fluidization quality and enabling the drying of materials that are difficult to fluidize conventionally.

A vibratory fluidized bed is a modified form of a fluidized bed, supported on a set of springs and powered by a vibration motor. Granular materials introduced into the dryer are agitated by the vibrational force acting on a porous plate, causing them to be tossed towards the outlet end. Hot air is introduced from beneath the porous plate, passing through the material layer to transfer heat to the material and carry away evaporated moisture, which is then expelled through the exhaust port, resulting in drying. Because the material in the vibratory fluidized bed experiences mechanical vibration and is in a state of motion, dynamic drying can be achieved with just the right amount of hot air, resulting in high thermal efficiency and uniform drying of materials.

Application Of Vibrating Fluid Bed Dryer

The vibratory fluidized bed dryer finds wide application across various industries including chemical, pharmaceutical, food processing, plastics, grain and oil, slag, salt production, and tobacco, for drying powdery and granular materials.

Food Industry

monosodium glutamate (MSG), sugar, refined salt, distillers' grains, gelatin, bean paste, etc.

Other Industries

ore powder, metal powder, coke, steel sand, feed, bran aldehyde, silica sand, coloring agents, ceramics, glutamic acid, quartz, abrasive materials, fertilizers, granular pesticides, seeds, grass, bone meal, mica asbestos, wood chips, etc.

Pharmaceutical Industry

glucose, gentian root, Anemarrhena asphodeloides, platycodon root, Atractylodes, granular pills, capsules, etc.

Light Industry

laundry detergent, corn germ, starch, etc.

Chemical Industry

boric acid, borax, resorcinol, catalysts, polyvinyl chloride (PVC), light calcium carbonate, anhydrous sodium sulfate, etc.

New Energy

vibrating fluidized bed technology has also been applied to the manufacturing and production of new energy products such as solar panels and fuel cells etc.

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Virbrating Fluid Bed Case Studies

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Vibrating Fluid Bed Dryer FAQ

Disadvantages of Vibrating Fluid Bed Dryers

Vibrating fluidized bed dryers are limited to loose powders or granular materials. They cannot directly process materials in other states, such as pastes or liquids. This limitation restricts their application range and calls for improvement and expansion.
Uneven fluidization is a common issue with vibrating fluidized bed dryers. These issues can lead to inefficient inter-phase contact, thereby affecting drying effectiveness. Additionally, uneven fluidization results in uneven distribution of material residence time within the bed layer, leading to non-uniform moisture content in the products and even causing some products to deteriorate due to over-drying.
Vibrating fluidized bed dryers consume considerable power and thermal energy. Continuous vibration requires significant electrical energy to sustain operation. Moreover, achieving drying effectiveness requires heating the drying medium to high temperatures, resulting in substantial energy consumption.