How does a vibrating fluidized bed work, what is the working principle of a fluidized bed?

The fluidized bed dryer is made of materials from the feed inlet into the machine, under the action of vibration force, the material is thrown along the horizontal plane fluidized bed, forward continuous movement, hot air upward through the fluidized bed with the wet material heat exchange, the moist air through the cyclone separator dust removal by the exhaust air 1:3 discharge dry material by the discharge inlet. It is suitable for drying and cooling of powdery and granular materials in chemical, pharmaceutical, food, dehydrated vegetables, grain, minerals and other industries.

The working principle of the vibrating fluidized bed is mainly to use the excitation force generated by the vibrating motor to vibrate the machine, and at the same time, the hot air input from the bottom of the bed makes the material in a fluidized state, and the material particles are in full contact with the hot air, so as to achieve the drying effect.

Vibrating fluidized beds work differently than traditional fluidized bed dryers. The traditional fluidized bed dryer mainly relies on hot air (wind power) to complete the transportation and fluidization of materials, while the vibrating fluidized bed mainly relies on vibration force to complete the transportation and fluidization of materials. As a result, the vibratory fluidized bed has higher heat transfer efficiency, lower energy consumption, and better drying results.

In a vibrating fluidized bed, the material enters through the feed port and jumps forward within the bed by the excitation force generated by the vibrating motor. At the same time, the hot air is input through the bottom of the bed, so that the material is in a fluidized state, and the material particles are in full contact with the hot air, so as to achieve the drying effect.

In addition, the vibratory fluidized bed is more adaptable and can be applied to a variety of different types of materials and different process conditions. At the same time, the vibrating fluidized bed also has the advantages of simple operation, convenient maintenance and long service life.

It should be noted that in actual operation, it is necessary to make appropriate adjustments according to different materials and process conditions to achieve the best drying effect. At the same time, it is also necessary to pay attention to safe operation and maintenance to ensure the normal operation and service life of the equipment.

Fluidized bed. The working principle is to evenly stack the solid particles in a container with an open bottom to form a bed, if the fluid passes through from top to bottom, the particles do not move, and it belongs to the fixed bed stage.

If the fluid passes through the bed from top to bottom, when the flow rate is low, the situation is no different from the solid bed, the flow rate increases, the particles will move to expand the bed, and when the flow rate is further increased, the particles will leave each other and the source width will move in the fluid, the greater the flow velocity, the more intense the activity, and move in various directions in the Bi crack rock bed. The last case is called the solid fluidized state, and the particle bed layer after the fluidized state is called the fluidized bed.

Vibrating fluidized bed is a kind of equipment that uses vibration force and air flow to work together, which is used for the drying, cooling, screening, classification, coating and other processes of solid particles. Its main point is that a flow state is formed inside the bed, so that the solid particles show a flow state under the action of air flow, so as to realize the treatment of solid source contact particles. At the same time, the vibrating fluidized bed also has the advantages of low energy consumption, high processing efficiency and easy operation.

In view of the problem of vibrating fluidized bed, it is suggested that we can start from the following aspects:

1.Equipment selection: select the appropriate vibration fluidized hail bed equipment according to the actual needs, including the selection of bed size, vibration force, air flow and other parameters.

2.Operation specifications: When using the vibrating fluidized bed, it is necessary to operate in accordance with the operation specifications, including the start, stop, cleaning and other operations of the equipment, as well as regular maintenance and maintenance of the equipment.

3.Process optimization: The operating parameters of the vibratory fluidized bed can be optimized for specific process requirements to improve processing efficiency and product quality.

Summary. Hello dear, the fluidized bed vibration force is usually achieved by controlling the vibration frequency and vibration amplitude of the shaker. If you want to increase the vibration force, there are several ways:

1.Increase the vibration frequency: By increasing the frequency of the shaker, the vibration force can be increased.

Please note that if the frequency is too high, it may cause damage to the fluidized bed, so it needs to be adjusted carefully. 2.Increase the amplitude of vibration:

By increasing the vibration amplitude of the shaker, the vibration force can be increased. Please note that if the amplitude is too large, it can also cause damage to the fluidized bed, so careful adjustment is required. 3.

Adjusting the particle size and porosity of the fluidized bed: By adjusting the particle size and porosity of the fluidized bed bed, the magnitude of the vibration force can also be affected. In general, the finer the particle size and the greater the porosity, the less vibrational force is required.

How to increase the vibration force of the fluidized bed.

Hello dear, the fluidized bed vibration force is usually achieved by controlling the vibration frequency and vibration amplitude of the shaker. If you want to increase the vibration force, there are several ways:1

Increase the vibration frequency: The vibration force can be increased by increasing the frequency of the shaker to make a guess. Please note that if you grip the manuscript too frequently, it may cause damage to the fluidized bed, so you need to adjust it carefully.

2.Increase the amplitude of vibration: By increasing the amplitude of the vibration of the shaker, the vibration force can be increased.

Please note that if the amplitude is too large, it can also cause damage to the fluidized bed, so careful adjustment is required. 3.Adjust fluidized bed particle size and porosity:

By adjusting the particle size and porosity of the fluidized bed bed, the magnitude of the vibration force can also be affected. In general, the finer the particle size and the greater the porosity, the less vibrational force is required. [slightly tan-skinned smile] <>

In order to avoid safety problems caused by the vibration of the fluidized blind bed, please be sure to follow the relevant safety regulations and operating guidelines when adjusting the vibration force, and operate with caution. It is recommended to adjust the vibration force under the guidance of professional technical personnel.

Summary. The basic working principle of the fluidized bed is to suspend the solid particle material in the reactor by gas fluidization to form a fluid-like state, so as to achieve efficient mass transfer, heat transfer and reaction process.

The basic working principle of the fluidized bed is to suspend the solid particle material in the reactor by gas fluidization to form a state similar to the chain core spring fluid, so as to achieve efficient mass transfer, heat transfer and reaction process.

Specifically, a fluidized bed reactor is usually composed of a reactor body, a gas distributor, a solid material feeding device, and a discharging device.

In the reactor, the gas is introduced into the gas distributor at the bottom of the reactor through the gas import and export, so that the gas is evenly distributed in the splitting source trapped cracker, and then the solid particle material is suspended in the gas through a gas fluidizing medium such as compressed air or nitrogen.

In this process, the velocity of the gas fluidized medium and the rolling flow rate control the suspension state of the solid granular material, and the mixing of rubber liquor, mass transfer, heat transfer and reaction between solid and liquid or solid gas are realized from the large difference. At the same time, by adjusting the parameters such as flow rate and temperature of the gas fluidization medium, the control and optimization of the reaction process can be realized.

What are the basic structures of circulating fluidized bed.

Its basic structure consists of the following main components:

1. Burner: The burner is the core part of the circulating fluidized bed, which is used to burn solid fuel potato husks. It usually consists of a combustion chamber, a combustion bed, and a burner hand leakage air** system.

2. Circulator: The circulator is used to circulate solid particles from the bed back to the burner. It is usually composed of circulating pipes, circulating valves, and circulating fans.

3. Fuel supply system with virtual fuel: The fuel supply system is used to transfer solid fuel to the burner. It usually includes fuel storage equipment, fuel delivery devices, and fuel pre-treatment equipment, among others.

4. Guchun volume separator: The solid separator is used to separate the solid particles in the bed from the regret gas. It is usually composed of a solid separator body, a solid discharge device and a macro discharge device before exhaust gas exhaust.

5. Heat exchanger: The heat exchanger is used for the heat energy generated by combustion in the bed, and the common heat exchangers include grate, superheater and reheater.

6. Lead control monitoring system: The control system is used to monitor and control the operation of the circulating fluidized bed, including the monitoring and adjustment of temperature, pressure, flow and other parameters.

How is the bubbling of a bubbling fluidized bed formed.

The bubbling in the bubbling fluidized bed is sprayed from the bottom of the fluidized bed by the air residue imitation body, and interacts with the solid large ballast particles when it rises in the vertical blind layer of the bed, resulting in moist foam and increasing volume.

When the rising velocity of the gas and foam reaches a certain level, the foam is separated and bubbling is formed due to the action of the surface tension of the liquid.

The size and number of bubbling are related to factors such as the operating conditions of the fluidized bed, the characteristics of the material, and the height of the bed.

A fluidized bed reactor is a kind of reactor that uses gas or liquid through a granular solid layer to make solid particles in a suspended motion state, and carries out a gas-solid phase reaction process or liquid-solid phase reaction process. When used in gas-solid systems, it is also called an ebullating bed reactor. The early application of fluidized bed reactors in modern industry was the Winkler furnace (see Coal Gasifier) for pulverized coal gasification that appeared in the 20s of the 20th century; However, the development of modern fluidization reaction technology is represented by petroleum catalytic cracking in the 40s.

At present, fluidized bed reactors have been widely used in chemical, petroleum, metallurgy, nuclear industry and other sectors.

The structure of the fluidized bed reactor is available in two forms: There is a continuous feeding and discharging device for solid materials, which is used for solid phase processing or liquid phase processing where the catalyst is rapidly deactivated. In the catalytic cracking process, for example, the catalyst is significantly deactivated within a few minutes and must be continuously separated and regenerated by the above-mentioned devices.

The continuous feeding and discharging device without solid materials is used for the reaction process where the properties of solid particles do not change significantly for a long time (such as half a year or one year).

Principle and Application:

The fluid (gas or liquid) passes through the bed at a higher flow rate, drives the solid particles in the bed to move, and makes it suspend in the flowing main flow for reaction, and has some characteristics similar to fluid flow, which is called a fluidized bed reactor.

A fluidized bed reactor is a kind of reactor with the participation of solid particles, which are in a state of motion, and their movement direction is varied, which is different from a fixed bed reactor. The bed composed of fluid and solid particles in the fluidized bed reactor is like a boiling liquid, so it is also called an ebullated bed reactor. This type of bed has similar properties to liquid, also known as pseudo-liquefaction layer.

The fluidized bed adsorber is mostly used for the reaction between solids and gases and liquids, and is characterized by sufficient contact between gas and solids, and the gas flow speed is more than three or four times greater than that of the fixed bed, so the process strengthens the production capacity and is very suitable for the continuous and large gas reaction process. Fluidized bed reactor can be used for gas-solid, liquid-solid, gas-liquid-solid catalytic or non-catalytic reactions, and is a widely used reactor in industrial production. A typical example is a catalytic cracking reactor, but also a number of gas-solid catalytic reactions, such as naphthalene oxidation, propylene ammonia oxidation, and butene oxidative dehydrogenation.

Fluidized bed reactors are also used in solid-phase processing, such as roasting pyrite and sphalerite, calcination of limestone, etc.