What are the advantages of an experimental multi zone rotary furnace?

The experimental multi temperature zone rotary furnace combines independent temperature control and dynamic rotary processing technology, demonstrating significant advantages in fields such as materials science, chemical engineering, and new energy. Its core advantages are reflected in five aspects: process precision, experimental efficiency, sample adaptability, data reliability, and operational safety. The following is a specific analysis:

1. Precision of Process: Achieving Fine Control of Complex Heat Treatment Processes
Multi zone gradient temperature control
Independent temperature field construction: The equipment is equipped with 2-4 independent heating zones, each of which can be individually set for temperature, heating rate, and insulation time, forming a linear or nonlinear temperature gradient. For example, in catalytic reaction experiments, the dynamic process of reactants entering the high-temperature reaction zone (800 ℃) from the low-temperature preheating zone (200 ℃) can be simulated to accurately control the reaction path.
Temperature uniformity optimization: By optimizing the layout of heating elements (such as spiral winding) and furnace tube structure (such as thin-walled design), combined with the three-dimensional mixing effect generated by rotation, the radial temperature difference is reduced. Typical equipment has a radial temperature difference of ≤± 3 ℃ and an axial temperature difference of ≤± 5 ℃ at 800 ℃, ensuring overall temperature consistency of the sample.
Dynamic atmosphere regulation
Accurate atmosphere control: Integrated mass flow meter (MFC) and vacuum pump, capable of introducing inert gas (N ₂ Ar）、 Reductive gases (H ₂, CO) or reactive gases (O ₂, NH3), with precise flow control (0.1-500mL/min). For example, in CVD coating experiments, by adjusting the gas flow rate and temperature gradient, it is possible to achieve a film thickness uniformity of ≤± 5%.
Vacuum environment simulation: The vacuum type rotary furnace can achieve a high vacuum environment of ≤ 10Pa, meeting the requirements of anaerobic sintering or vapor deposition experiments, and avoiding sample oxidation or contamination.

2. Experimental efficiency improvement: shorten the cycle and reduce energy consumption
Continuous process support
Rotating dynamic processing: The furnace tube rotates at a speed of 1-15rpm, combined with tilt angle adjustment (such as -5 ° -20 °), to generate axial rolling and radial mixing of materials inside the furnace, significantly improving heat and mass transfer efficiency. For example, in powder sintering experiments, rotary processing can improve the uniformity of sample density by more than 30% and shorten the holding time by 20% -30%.
Continuous feeding and discharging: Supports simulating the working mode of industrial fluidized bed reactors, achieving precise control of reactant residence time and reducing batch differences by controlling the feeding speed and furnace tube speed.
Programmed operations and data recording
Process parameter storage: The device supports the storage and quick retrieval of multiple sets of process curves, avoiding duplicate parameter settings and improving experimental repeatability. For example, in catalytic cracking experiments, an integrated program of “heating reaction cooling” can be preset, and the single experiment cycle can be shortened to 4-6 hours.
Real time data collection: The built-in data collection system can synchronously record parameters such as temperature, speed, and atmosphere flow rate, and generate curve reports to assist in analyzing reaction kinetics and reduce manual recording errors.

3. Enhanced sample adaptability: covering diverse experimental needs
Multi form sample processing
Powder material: The rotational mixing effect can eliminate powder agglomeration and improve sintering activity. For example, in the sintering of nano ceramic powders, rotary processing can improve grain size uniformity by 40% and reduce the risk of cracking.
Block material: By adjusting the furnace tube speed (such as 1-3rpm) and tilt angle, block collision damage is avoided while ensuring surface temperature uniformity. For example, in the heat treatment of metal parts, rotary design can cause surface hardness fluctuations of ≤± 2HRC.
Molten material: Dynamic processing reduces the contact time between the material and the inner wall of the furnace tube, reducing the risk of wall sticking. For example, in glass melting experiments, a rotary furnace can achieve continuous discharge, avoiding the pipe blockage problem of traditional static furnaces.
Extreme condition simulation
High temperature and corrosive environment: equipped with corundum tube (Al ₂ O ∝) or metal tube (such as Hastelloy), temperature resistance ≤ 1700 ℃, strong corrosion resistance, suitable for experiments with corrosive gases such as sulfur and chlorine.
High pressure reaction support: Some models support high-pressure environments of 0.1-10MPa, meeting the needs of hydrothermal synthesis or supercritical fluid experiments.

4. Data reliability assurance: enhancing the credibility of scientific research achievements
High precision sensors and closed-loop control
Using S-type thermocouples (accuracy ± 0.25 ℃) or infrared thermometers, real-time temperature data is fed back to the PID control system to achieve temperature closed-loop control. For example, in semiconductor material annealing experiments, temperature fluctuations of ≤± 1 ℃ ensure the stability of the lattice structure.
The precision of speed control reaches ± 0.5rpm, avoiding uneven sample mixing caused by speed fluctuations.
Long term stability and repeatability
Heating element lifespan: Silicon carbon or silicon molybdenum rod heating elements have a lifespan of ≥ 2000 hours, reducing replacement frequency and lowering experimental costs.
Wear resistant design of furnace tube: The inner wall is polished (roughness Ra ≤ 0.8 μ m) to reduce the risk of material adhesion, extend the service life of equipment, and ensure consistency of experimental conditions.

5. Enhanced operational safety: reducing experimental risks
Multiple security protections
Explosion proof structure: The furnace body adopts a double-layer explosion-proof design, with the inner layer made of high-temperature refractory material, the outer layer made of cold-rolled steel plate, and the middle filled with insulation cotton. The surface temperature is ≤ 60 ℃ to prevent burns.
Leak detection and alarm: equipped with gas leak sensors and over temperature alarm devices, automatically cut off power and exhaust in case of abnormal situations to ensure personnel safety.
Humanized operation interface
Touch screen operation: Supports switching between Chinese and English interfaces, with intuitive and convenient parameter settings, reducing the threshold for operation.
Remote monitoring function: Through Wi Fi or Ethernet connection, remote monitoring and data transmission of the experimental process can be achieved, facilitating collaboration among multiple people.