Vibrating Fluid Bed Dryer

Vibrating Fluid Bed Dryer Introduction

The Hywell Machinery vibrating fluid bed dryer is a new technology developed on the basis of the static fluidized bed dryer. Mechanical vibration is added to the fluidized bed dryer. The material has been fed into the vibrating fluid bed dryer, under the dual function of the vibrating and airflow, the material moves along the fluidized bed being thrown forward continuously. Hot air is upward through the fluidized bed and wet materials from the heat after the exchange. And after dried products will be discharged from the vibrating fluid bed dryer. Our company not only has a vibrating fluidized bed dryer, but it also has a fluidized bed granulator.

Vibrating Fluid Bed Dryer Description

The Vibrating fluid bed dryer includes the heating device, main machine, air filtration system for products, and air system.

The main air heating system of the vibration fluidized bed dryer supplies the drying chamber with the designed amount of air. The air rate is calculated with Hywell Machinery’s process calculation program.

The program of the shaking fluid bed dryer is based on the actual ambient conditions at the physical place where the dryer will be installed.

The main air system of the shaking fluid bed dryers consists of air filters, pre-heating systems, an air heater, a supply fan, and from time to time a dehumidification system. The main air system of the shaking fluid bed dryer is constructed according to the actual requirements of the product and the ambient conditions.

Fines and air filtration system of fluid bed dryer process. The fines coming out of the drying chamber and the external fluid bed, together with the exhaust air will be separated from the exhaust air before letting it into the atmosphere.

Cyclones and bag filters of the shaking fluid bed dryers are the most common ways of filtering the fines from the air. Cyclones seldom stand alone. This is because the emission will often violate the environmental requirements in terms of the permitted mg of powder per m3/air. Therefore, a bag filter is necessary(option).

A bag filter of the shaking fluid bed dryer can be a standalone solution as this technology is able to remove the required powder fines before outlet to the atmosphere. The fines are collected in a fines return system, thereby the powder loss is reduced to a minimum. The fines can be re-entered to the top of the drying chamber, to achieve agglomeration of the powder or they can be sent to the internal or external fluid bed. Again, the required powder specifications will decide the design of the fines system.

Powder sifter (option): The final step of the shaking fluid bed dryer is the powder sifter. The powder sifter will separate the large powder particles from the powder, size is determined for the separation. The off size is bagged off and the powder can be either directly packed into big bags or conveyed to a silo system for other packing systems.

if the materials is heat sensitive, it can use our vacuum tray dryer to dry it.

Vibrating Fluid Bed Dryer for Beverage Granules Line

 

Vibration fluid bed dryer for potassium chloride

Vibrating Fluid Bed Dryers Specifications

Model	Bed area (M⊃2;)	Inlet air temperature (ºC)	Exhaust air temperature (ºC)	Water evaporated capacity (kg/h)	Vibration motor power (kw)
ZLG4.5*0.45	2.025	70-300	40-80	30-70	1.1x2
ZLG4.5*0.60	2.7	70-300	40-80	50-100	1.1x2
ZLG6*0.45	2.7	70-300	40-80	50-100	1.5x2
ZLG6*0.60	3.6	70-300	40-80	80-130	1.5x2
ZLG6*0.75	4.5	70-300	40-80	110-160	2.2x2
ZLG6*0.9	5.4	70-300	40-80	130-180	2.2x2
ZLG7.5*0.60	4.5	70-300	40-80	110-190	2.2x2
ZLG9X1.2	10.8	70-300	40-80	230-400	4X2
1. Hywell machinery reserves the right to the design without notice 2. All specifications of vibrating fluid bed dryers are as accurate as is reasonably possible, but they are not binding.

Drying bed plate model of vibration fluid bed dryer

   

The bed plate of a vibration fluid bed dryer is the main component that comes into contact with the material throughout the entire drying process. It also plays a critical role in fluidization and moisture evaporation, making it one of the most important parts of the machine.

To suit the characteristics of different materials, Hywell Machinery offers a variety of bed plate designs, including straight perforated plates, louver (tongue-type) perforated plates, mesh plates, and combined perforated plates.

• Louver (tongue-type) perforated plates are generally recommended for materials with a low bulk density or light specific gravity, as they help prevent fine particles from being blown away.

• Mesh plates are ideal for powders or fine particles with a relatively high specific gravity. The minimum mesh opening can be as small as 0.2 mm, making them suitable for materials such as salt, sodium sulfate, and other fine granular products.

Welcome to contact Hywell Machinery. Our experienced engineers will provide free technical consultation and recommend the most suitable bed plate design for your material and production requirements.

Heating method of the vibration fluidized bed dryer

A vibration fluidized bed dryer requires a large volume of hot air and a significant amount of thermal energy to achieve efficient drying. Therefore, selecting the appropriate heating method is an important part of the system design.

Common heating options for vibration fluidized bed dryers include:

• Steam heat exchangers

• Natural gas or diesel-fired hot air generators

• Thermal oil (hot oil) heating systems

• Coal-fired hot air furnaces (used in some regions)

• Electric heaters

Among these options, electric heating is generally recommended only for small-capacity equipment, as large-scale dryers require high heating power, resulting in high electricity consumption and operating costs.

The most suitable heating method depends on several factors, including the material properties, production capacity, available energy sources, local energy costs, and the customer's operating conditions.

Contact Hywell Machinery for a free technical consultation. Our experienced engineers will recommend the most efficient and cost-effective heating solution for your specific application.

Fluidized Bed Dryer Construction Materials

Hywell Machinery is able to offer our ZLG series fluidized bed dryer with contact parts to be built in SS304, SS316L, Titanium, Duplex stainless steel, etc. Electrical parts of the control system of the drying machine can be adapted to the customer’s needs.

How does the Vibratory Fluid Bed Dryer Work

A continuous fluid bed system is a machine in which a continuous flow of “wet” powder, granular, or flake material is conveyed over a perforated bed.  Hot drying air is blown through the holes of a perforated plate.  The wet solids are lifted from the bottom and cause the solids to behave as fluid. The air velocity is adjusted to keep the moving layer of material fluidized.

Advantages of Hywell Vibrating Fluid Bed Dryer

The Hywell ZLG Series Vibrating Fluid Bed Dryer offers the following advantages over conventional drying equipment:

1. Low Energy Consumption

The vibrating fluid bed dryer provides excellent heat transfer efficiency, resulting in lower energy consumption compared with many conventional drying systems.

2. Uniform Drying Quality

Accurate control of the material residence time ensures consistent moisture content and uniform drying throughout the entire product.

3. Low Operating and Maintenance Costs

The simple mechanical structure, reliable operation, and high thermal efficiency help reduce both operating and maintenance costs.

4. Flexible Process Design

The dryer can be designed with integrated drying and cooling sections, allowing different process requirements to be met in a single machine.

5. Reliable Continuous Operation

The vibration generated by vibration motors ensures stable material movement, reliable continuous production, minimal downtime, and a long service life.

6. Flexible Feeding Options

The feeding system can be customized with manual feeding, screw feeders, vibrating feeders, or belt conveyors to suit different production lines.

7. Easy Operation and Cleaning

The machine features a simple control system, smooth operation, and highly polished internal and external surfaces without dead corners, making cleaning easy and preventing cross-contamination.

8. Adjustable Operating Parameters

The material bed depth, vibration amplitude, vibration frequency, and conveying speed can all be adjusted to accommodate a wide range of materials and production capacities.

9. Gentle Product Handling

The gentle vibration minimizes product breakage, making the dryer ideal for fragile granules, crystals, and irregularly shaped materials.

10. Hygienic Closed-System Design

The enclosed drying process prevents external contamination, reduces dust emissions, and is suitable for continuous production in food and chemical industries.

Vibratory Fluid Bed Dryer Options

1.  Construction Material of Vibratory Fluid Bed Dryer:

Hywell is able to offer the vibratory fluid bed dryer system with contact parts to be built in Carbon steel, SS304, SS316/316L, Titanium, Duplex stainless steel, etc. The standard of internal and external finish can be adapted to the customer’s needs.

2.  Vibratory Fluid Bed Drying System Feeding & Discharge Options:

A vibratory fluid bed drying system can have a variety of feeding & discharging methods that match the demands of the filling & production line.

3.  Custom Engineered Dimensions of Vibratory Fluid Bed Drying System:

Dimensions of the vibratory fluid bed drying system can be defined according to the customer’s requirements.

4.  Vibratory Fluid Bed Drying System Sizes:

The vibratory fluid bed drying system total treat capacity with a bigger size as per request &. more.

5. Vibration Pad of Vibratory Fluid Bed Drying System

Regarding the vibration pad, we can choose two options: one is the ordinary rubber vibration pad, and the other is the air bag. The air bag pad is used to dry the easily broken materials. such as the breadcrumb drying process.

Vibratory Fluid Bed Dryer Application

A vibratory fluid bed dryer is widely used in pharmaceutical, chemical, food, and electronic industries．

1. Vibratory Fluid Bed Dryers for the Petrochemical Industry

Vibratory Fluid Bed Dryers for Inorganic

Ammonium hydrogen fluoride, potassium permanganate, sodium thiocyanate, cobalt sulfate, nickel sulfate, zinc sulfate heptahydrate, ammonium chloride, calcium, strontium chloride, sodium chlorate, etc

Vibratory Fluid Bed Dryers for Organics

P-nitrobenzoic acid, fumaric acid, pentaerythritol, resorcinol, catechol, calcium hypochlorite, sodium silicate, GDL, sodium gluconate, thiourea, sorbitol, dicyandiamide.

Vibratory Fluid Bed Dryers for Pesticides

Imidacloprid granules, granules glyphosate

Vibratory Fluid Bed Dryers for Polymer

High-absorbent resin, a polystyrene resin, sodium polyacrylate

Vibratory Fluid Bed Dryers for Chemical Additives

Methylcellulose, polyacrylamide, hydroxyethyl cellulose

2. Vibratory Fluid Bed Dryers for the food and beverage industry

trehalose, caramel, tartaric acid, coffee, bread crumbs, milk powder, citric acid, potassium citrate, sodium citrate, maltitol, xylose, and xylitol.

Vibrating Fluid Bed Dryers Video

Features of Hywell Vibrating Fluid Bed Dryer

1. Bar-Type Perforated Bed Plate

The drying bed adopts a bar-type perforated plate with a minimum slot opening of 0.2 mm. Although the manufacturing cost is higher than that of conventional perforated plates, it effectively prevents material leakage and eliminates the need to clean accumulated product in the lower air chamber.

2. Flat Bed Surface for Better Fluidization

The bar-type bed plate provides a highly flat drying surface without dead zones, ensuring smooth material movement, uniform fluidization, and improved hygienic performance.

3. Air Spring Vibration Isolation System

The vibration isolation system uses air springs instead of conventional rubber mounts or mechanical springs. This significantly reduces vibration transmitted to the foundation, lowers operating noise, and minimizes product breakage.

4. Integrated Drying and Cooling

The equipment can be designed with a front drying section and a rear cooling section, allowing the product to be cooled immediately after drying and transferred directly to the packaging process.

5. Short Residence Time

Material residence time is typically 6–8 minutes, enabling rapid drying while minimizing thermal exposure and preserving product quality.

6. Adjustable Residence Time

An adjustable discharge weir allows operators to control the material bed depth and residence time, making it easy to achieve the desired final moisture content.

7. Optimized Multi-Zone Air Distribution

The lower air chamber features a multi-zone air distribution system with multiple air inlets. Different air volumes and temperatures can be supplied to each zone, ensuring uniform airflow distribution and higher drying efficiency.

8. Reinforced Vibration Structure

The vibration motor mounting tube is reinforced with heavy-duty strengthening plates to evenly distribute vibration across the drying bed. Adjustable eccentric counterweights are provided to optimize vibration performance and prevent resonance.

9. Enlarged Upper Chamber

The enlarged expansion chamber reduces air velocity, minimizes fine powder entrainment, and improves product recovery efficiency.

10. Convenient Inspection and Cleaning

Multiple inspection windows, cleaning doors, and a dedicated clean-out door at the discharge end make routine inspection, cleaning, and maintenance quick and convenient.

11. Heavy-Duty Structural Design

The upper chamber is reinforced with seamless steel tubes to improve structural rigidity and ensure long-term operational stability.

12. Fixed Upper Chamber Design

The upper chamber remains stationary and is connected to the vibrating lower bed through flexible connectors. This design reduces the moving mass, lowers the load on the vibration motors, and extends equipment service life.

13. Indirect Heating System

The hot air generator adopts an indirect heating design, preventing combustion gases from contacting the product and ensuring clean drying.

14. Multiple Fuel Options

The hot air generator can be configured for natural gas, diesel, LPG, thermal oil, steam, or electric heating, depending on the customer's energy source and operating conditions. (Gas and oil burners are alternative options and cannot be used simultaneously.)