The 1200 ℃ vertical fluidized bed tube furnace is a high-temperature experimental equipment designed by combining fluidized bed technology and tube furnace. Its core principle is to achieve uniform heating and efficient reaction of solid particles through gas fluidization, which is suitable for powder material processing, CVD experiments, catalyst evaluation and other fields. Let's take a detailed look at this device below!

A commonly used 1200 ℃ vertical fluidized bed tube furnace (click on the image to view product details)

1. Technical principle: Fluidized bed technology achieves uniform heating
Formation of fluidized bed
Gas is introduced from the bottom of the furnace and evenly distributed through a porous quartz plate, blowing solid particles (such as powders or small particle samples) upwards at a specific flow rate. When the airflow velocity reaches a critical value, the particle layer enters a fluidized state, exhibiting liquid like flow characteristics, suspended in the airflow, and vigorously mixed.

Enhance heat transfer and reaction
Improved contact area: In fluidized state, the contact area between gas and solid particles is increased by multiple times compared to a fixed bed, greatly enhancing heat conduction and chemical reaction rate.
Temperature uniformity: The vigorous movement of particles ensures uniform temperature distribution in the bed, with a temperature difference controlled within ± 5 ℃, avoiding local overheating or uneven reactions.
Reaction efficiency optimization: promotes reactant diffusion and product desorption, especially suitable for multiphase catalytic reactions and powder material processing.

Advantages of vertical tubular structure
Gravity assisted conveying: After the material is added from the top and falls along the tube bundle, it is heated or reacted in the fluidized section, and finally discharged from the bottom to reduce the risk of blockage.
Gas flow control: The vertical design facilitates the optimization of the tube bundle layout, reduces system resistance, and accurately adjusts the gas flow rate through a mass flow meter. Combined with real-time feedback of temperature data from thermocouples, PID closed-loop control is achieved.

2. Structural features: Modular design meets diverse needs
core component
Furnace tube material: high-purity quartz tube or corundum tube, high temperature resistance and strong chemical stability, with porous quartz plate or ceramic plate embedded inside as gas distribution plate.
Heating element: High quality resistance wire, faster heating rate, maximum temperature up to 1200 ℃, rated temperature 1100 ℃.
Temperature control system: 30 segment program temperature control intelligent PID regulation, temperature control accuracy ± 1 ℃, equipped with over temperature protection, thermocouple protection, and power-off protection functions to ensure experimental safety.

Sealing and Vacuum System
Flange design: Stainless steel vacuum flange, using O-ring extrusion sealing, easy to disassemble and has good air tightness, can be reused.
Vacuum configuration: Single stage pump, two-stage pump or high vacuum system can be selected, with a maximum vacuum degree of 10 ⁻ 3Pa, meeting the requirements of different experimental atmospheres.

Accessibility
Data recording and transmission: Equipped with communication interfaces and software, it can draw real-time heating curves and save temperature data, supporting remote control by computer.
Safety protection: The surface temperature around is ≤ 45 ℃, equipped with leakage protection device, and the operation safety is high.

3. Application scenario: Covering high-temperature experimental needs in multiple fields
Powder material processing
CVD experiment: Powder surface deposition is achieved through gas fluidization to prepare thin films or coating materials.
Coating experiment: Coating other materials on the surface of powder particles to improve their performance (such as conductivity and corrosion resistance).
Catalyst evaluation: Simulate actual reaction conditions and test the activity and stability of the catalyst.

High temperature heat treatment
Sintering and Annealing: High temperature sintering or annealing treatment of ceramic and metal powders to optimize their microstructure.
Volatile Component Analysis: Analyze the volatile components in materials through high-temperature heating and study their thermal decomposition characteristics.

Atmosphere controllable experiment
Oxidation/Reduction Environment Simulation: By adjusting the atmosphere composition through a multi-channel gas switching system, the reaction behavior of materials under different atmospheres is studied.
Inert gas protection: Conduct experiments under inert atmospheres such as argon and nitrogen to prevent material oxidation or contamination.

Customized 1200 ℃ vertical fluidized bed tube furnace with five temperature zones (click on the image to view product details)

4. Selection suggestion: Match equipment parameters according to experimental needs
Temperature and temperature control accuracy
Confirm whether the maximum temperature (1200 ℃) and rated temperature (1100 ℃) meet the experimental requirements, and prioritize selecting equipment with a temperature control accuracy of ± 1 ℃ to ensure experimental repeatability.

Furnace tube size and material
According to the sample size, choose the furnace tube diameter (such as Φ 25mm, Φ 60mm) and length (such as 500mm, 1000mm). High purity quartz tubes are suitable for most experiments, while corundum tubes are more resistant to high temperatures but have higher costs.

Vacuum and Atmosphere System
If a high vacuum environment is required, choose a high vacuum system equipped with a molecular pump (with a vacuum degree of 10 ⁻ 3Pa); If only ordinary vacuum or atmosphere protection is needed, single-stage or two-stage pumps can meet the requirements.

Safety and operational convenience
Priority should be given to selecting equipment with over temperature protection, breaking protection, and leakage protection functions to ensure the safety of the experiment; The touch screen operation interface and automation control system can simplify the operation process and improve experimental efficiency.

Brand and after-sales service
Choose a reputable brand with stable product performance and comprehensive after-sales service; Confirm the warranty period (usually 12 months, excluding vulnerable parts) and technical support response speed.Click to learn more Tube furnaces! Or click on online customer service to learn more about product information!