High temperature vertical tube furnace fluidized bed is a high-temperature experimental equipment that combines fluidized bed technology with vertical tube furnace structure. Its core advantage lies in achieving uniform heating and efficient reaction of samples through fluidized bed technology, while utilizing the compact design of vertical tube furnace to save space and improve operational convenience. Let's take a detailed look below!

A commonly used high-temperature vertical tubular fluidized bed electric furnace (click on the image to view product details)

1. Technical principle: Integration of fluidized bed and vertical tube
fluidized bed technique
By suspending solid particles through gas or liquid, a fluid like state is formed. In a high-temperature vertical tube furnace, gas flows upward from the bottom, suspending solid materials (such as coal and biomass) or catalyst particles inside the tube bundle, forming a "fluidized bed". This state greatly increases the contact area between gas and solid, enhancing heat and mass transfer processes.

Vertical tube furnace structure
The furnace body is designed vertically, with vertical tube bundles arranged inside, and fuel or samples flow inside the tubes. Compared to horizontal furnaces, vertical structures save more space and are easier to observe and maintain. In high-temperature environments, tube bundle materials (such as quartz, ceramics, or high-temperature alloys) need to have good heat resistance and chemical stability.

2. Core advantages: Efficient, uniform, and flexible
Uniform heating and efficient reaction
Fluidized bed technology suspends solid particles, eliminates local overheating, and achieves uniform temperature distribution. Meanwhile, the sufficient contact between gas and solid accelerates the chemical reaction rate, making it suitable for scenarios that require rapid heating or efficient catalysis.

Accurate temperature control
Equipped with an intelligent temperature control system (such as PID regulation), it can accurately control the heating temperature and heating rate to meet different experimental needs. Some high-end models support multi-stage program temperature control to adapt to complex process flows.

The atmosphere is controllable
The atmosphere inside the furnace can be flexibly adjusted (such as inert gas, reducing gas), supporting vacuum or micro positive pressure operation, meeting the experimental requirements sensitive to atmosphere such as material synthesis and catalyst evaluation.

Easy to operate and maintain
Modern devices adopt touch screen control interfaces and automation systems to simplify the operation process. The vertical structure is convenient for cleaning the tube bundle and observing the reaction process, reducing maintenance costs.

3. Typical application scenarios
Materials Science
Powder/particle material processing: such as nano material synthesis, ceramic sintering, metal heat treatment.
Catalyst evaluation: Fluidized bed provides a uniform reaction environment, suitable for catalyst activity testing and life assessment.
CVD (Chemical Vapor Deposition): Deposition of thin films on substrate surfaces, such as carbon nanotubes and graphene, through gas reactions at high temperatures.

Energy & Chemicals
Coal/biomass combustion: Fluidized bed technology improves combustion efficiency, reduces pollutant emissions, and is suitable for clean energy research.
Petroleum Heating and Catalytic Cracking: Uniform Heating and Efficient Mass Transfer Characteristics Optimize Cracking Reactions to Improve Product Yield.
Hydrogen metallurgy: Green electric green hydrogen fluidized bed hydrogen metallurgy achieves low-carbon metallurgy by reducing iron ore through fluidized bed.

Environmental Engineering
Waste gas treatment: Fluidized bed reactors are used for high-temperature decomposition of organic pollutants, such as volatile organic compounds (VOCs) treatment.
Solid waste resource utilization: Hazardous waste is treated through high-temperature fluidized bed to achieve harmless treatment and resource recovery.

4. Selection suggestion: Match performance according to requirements
temperature range
The maximum temperature of conventional models can reach 1200-1600 ℃, while some high-end models can exceed 1800 ℃, depending on the temperature resistance of the experimental materials.

Tube bundle size and constant temperature zone
The diameter of the pipe (Φ 40-200mm) and the length of the constant temperature zone (200-1000mm) need to match the sample size and processing capacity. Large caliber tube bundles are suitable for block samples, and long constant temperature zones support continuous processes.

Atmosphere control ability
If a vacuum or special atmosphere is required, a model equipped with a vacuum pump and gas mass flow meter should be selected to ensure the purity and stability of the atmosphere.

Automation and safety functions
Prioritize selecting equipment with safety features such as overcurrent protection, overheating protection, and automatic power-off to reduce operational risks. Models with high levels of automation can improve experimental repeatability and efficiency.

Budget and Brand
The price range is wide (thousands to hundreds of thousands of yuan), requiring a balance between performance and cost. Choosing a brand with a good reputation can provide more assurance in terms of quality and after-sales service.

Touchscreen high-temperature vertical fluidized bed tube furnace (click on the image to view product details)

In general, it is recommended to communicate the parameters with relevant technical personnel when choosing a vertical tube furnace fluidized bed, so as to select a more suitable vertical tube furnace fluidized bed for one's own experiment or production!Click to learn more Vertical tube furnaces! Or click on online customer service to learn more about product information!