Electric Tube Furnace
2.Lab Box Furnace Equipment:1L-36L
3.Working Temperature can reach 1200℃-1700℃
***Price List for whole above, inquire us to get
Description
Technical Parameters
Electric tube furnace,also known as tubular atmosphere resistance furnace,is a kind of testing and testing equipment mainly used in metallurgy,glass,ceramics,electronics,chemical industry,machinery,refractory materials,new material development,special materials,building materials and other fields.It can also be used in lithium anode and cathode materials,new energy,abrasives and other industries,as a professional equipment to determine the material at a certain temperature or atmosphere conditions.It includes single tube,double tube,horizontal,open type,vertical,single temperature zone,double temperature zone,three temperature zone and so on.In addition,there are vacuum tube furnace,atmosphere tube furnace,ordinary tube furnace,rotary tube furnace,multi-station tube furnace and other categories.
The design of furnace body and furnace structure and the use of advanced technology make the furnace body new in appearance and reasonable in structure.The shell is usually made of national standard steel,and has been sprayed with plastic treatment,and has the advantages of temperature resistance,durability,oxidation resistance,acid resistance,alkali resistance.The furnace materials are all made of imported Morgan fiber,with high temperature,low heat storage and good thermal insulation performance.At the same time,furnace tubes are usually made of quartz glass tubes or corundum 99 ceramics,and are equipped with stainless steel metal flange seals (double rubber rings).
Working principle
The working principle of electric tube furnace is to put the workpiece into the inductor (coil),when the inductor is passed into a certain frequency of alternating current,the alternating magnetic field is generated around.
The electromagnetic induction of alternating magnetic field produces a closed induced current - eddy current in the workpiece.The distribution of induced current on the workpiece cross-section is very uneven,the current density on the surface of the workpiece is very high,and it gradually decreases inward,this phenomenon is called skin effect.The electrical energy of the high density current on the surface of the workpiece is converted into heat energy,which increases the temperature of the surface layer,that is,surface heating is realized.
In addition,the working principle of the high-temperature tubular electric furnace is that the thermocouple converts the furnace temperature into a voltage signal and adds it to the microcomputer temperature control regulator.
The regulator compares this signal with a programmed setting and outputs an adjustable signal.
Then the adjustable signal is used to control the trigger,and the trigger triggers the voltage regulator to achieve the purpose of adjusting the electric furnace voltage and temperature.
Parameter
| Lab Tubu Furnace Equipment | ||||
| Specification | Working Temperature | Outer diameter of furnace tube(mm) | Number of heating zones | Length of heating zone(mm) |
| TFH：Desktop Type | 1200:1200℃ | 25:Φ25mm | Single Temperature Zone | 150:150mm |
| TFV：Vertical Type | 1500:1500℃ | 30:Φ30mm | Double Temperature Zone | 220:220mm |
| TFR：Rotary Type | 1700:1700℃ | 50:Φ50mm | Three Temperature Zone | 290:290mm |
| TFM：Multi-station Type | 60:Φ60mm | 440:440mm | ||
| TFP：High Pressure Type | 80:Φ80mm | |||
| TFC:CVD | 100:Φ100mm | |||
| TFE:PECVD | ||||
| TFG：Atmosphere Fired Type | ||||
| TFD：Customized | ||||
| Lab Box Furnace Equipment | ||
| Specification | Working Temperature | Volume(L) |
| BFC:General type | 1200:1200℃ | 1:1L |
| BFV:Vacuum Type | 1500:1500℃ | 3.4:3.4L |
| BFW:Visible type | 1700:1700℃ | 4.5:4.5L |
| BFD:Customized | 7.2:7.2L | |
| 12:12L | ||
| 16:16L | ||
| 18:18L | ||
| 36:36L | ||
Market price
Price range
Common model
Price range:thousands to tens of thousands of dollars.
Application scenario:general laboratory,small production line,etc.
High-end models or special configurations
Price range:tens of thousands to hundreds of thousands of dollars.
Application scenario:Special requirements for heating temperature,atmosphere control,degree of automation,etc.
Price influencing factor
Brand:The products of well-known brands are often higher in price,but the quality and after-sales service are more guaranteed.
Type and configuration:Different types and configurations of tubular electric furnaces vary in price,such as heating temperature range,furnace size,atmosphere control system,etc.
Material and process:Furnace material (such as stainless steel,ceramic fiber,etc.) and manufacturing process will also affect the price.
Customized demand:According to the specific needs of customers to customize the design of tubular electric furnace,the price will be relatively high.
Market price example
The following are some examples of the price of tubular electric furnaces commonly found in the market (for reference only,the actual price may fluctuate due to market changes):
Small tubular electric furnace for laboratory:several thousand yuan to about 10,000 yuan.
Medium tubular electric furnace:between 10,000 yuan and 50,000 yuan.
Large or high-end tubular electric furnace:more than 50,000 yuan,or even hundreds of thousands of yuan.
Pyrolytic-extraction technology
The electric tube furnace pyrolyzation-extraction technology is an efficient treatment method for polymer materials,which combines the advantages of both pyrolysis and extraction technologies,and can pyrolyze polymer materials at high temperatures,and extract useful components from the pyrolysis products through the extraction process.
Technical principle
Pyrolysis process
In a tubular electric furnace,the polymer material is placed in a high temperature environment,and the chemical bonds between the molecules are broken at high temperatures,thus breaking down into small molecular compounds.
During the pyrolysis process,the composition and distribution of pyrolysis products can be optimized by precisely controlling the heating temperature and holding time.
Extraction process
The small molecule compounds produced by pyrolysis have different solubility in solvents.
These useful components can be extracted from the pyrolysis products by selecting suitable solvents and extraction conditions.
Technical characteristics
High efficiency
The high temperature environment of tubular electric furnace accelerates the pyrolysis process of polymer materials and improves the treatment efficiency.
The extraction process can quickly extract useful components from pyrolysis products and realize efficient utilization of resources.
Controllability
By precisely controlling the heating temperature and holding time,the pyrolysis process can be precisely controlled.
The extraction effect can be optimized by adjusting parameters such as solvent type,extraction time and temperature.
Environmental protection
The combined pyrolysis and extraction technology can reduce the pollution to the environment.
By optimizing the pyrolysis and extraction conditions,the waste can be reduced,recycled and treated harmlessly.
Application example
Waste plastics are one of the main sources of environmental pollution,and the combined pyrolysis and extraction technology of tubular electric furnace can effectively transform waste plastics into valuable fuels or chemicals.In the pyrolysis process,waste plastics are decomposed into small molecular compounds,such as hydrocarbons and aromatic compounds,at high temperatures.Subsequently,through the extraction process,these useful ingredients can be separated from the pyrolysis products and further processed into energy products such as fuel oil,diesel,gasoline,or used as chemical raw materials for the production of other chemicals.
Biomass resources,such as wood and crop waste,are also important application fields of tube furnace pyrolyzation-extraction technology.Through this technology,biomass materials can be converted into energy products such as bio-oil and biogas.These energy products have the advantages of renewable and environmental protection,which are of great significance for easing energy pressure and promoting the transformation and upgrading of energy structure.
Waste polymer materials such as plastics,rubber and so on are also the important treatment objects of this technology.The waste polymer materials can be decomposed into small molecular compounds by pyrolysis and extraction technology,and the useful components can be extracted by extraction process.These components can be further processed into new polymer materials to realize the recovery and reuse of waste polymer materials.This can not only reduce environmental pollution,but also save resources and reduce production costs.
In the process of drug development and production,the tube furnace pyrolyzation-extraction technology is also widely used.Through this technology,the pharmaceutical raw materials can be pyrolyzed to extract the active ingredients.At the same time,the technology can also be used in the purification,separation and identification of drugs to improve the quality and purity of drugs.
In environmental science research,the tube furnace pyrolysis and extraction technology is also used to simulate and study the decomposition process of waste at high temperatures.Through this technology,we can understand the decomposition law and product distribution of waste at different temperatures,and provide scientific basis for waste treatment and resource utilization.
Development prospect
With the increasing awareness of environmental protection and the continuous development of circular economy,the combined pyrolysis and extraction technology of electric tube furnace will play an increasingly important role in the field of polymer material treatment.In the future,the technology is expected to further develop in the following aspects:
Technological innovation:
Through continuous technological innovation,the pyrolysis and extraction efficiency is improved and the production cost is reduced.
Develop new catalysts and solvents to improve product purity and added value.
Equipment optimization:
Optimize the design and structure of tubular electric furnace to improve the stability and durability of the equipment.
Develop intelligent control system to realize automatic and intelligent control of pyrolysis and extraction process.
Application field expansion:
The technology is applied to more fields of polymer material processing,such as medicine,chemical industry,new energy and so on.
Explore the application of combination with other technologies,such as membrane separation,catalytic conversion and other technologies,to form a more efficient polymer material processing system.
Key component-Firebrick
Main species
High alumina brick
Raw material: alumina as the main raw material, adding appropriate additives.
Performance: Excellent high temperature resistance, refractoriness up to 1750~1800℃. At the same time, it also has good thermal shock resistance and wear resistance, and can withstand the thermal expansion and contraction of the furnace wall at high temperature, as well as the wear of the material on the furnace wall.
Application: Suitable for high temperature parts of tubular electric furnace.
Clay brick
Raw material: Kaolin as the main raw material, adding appropriate amount of additives.
Performance: Low refractoriness, generally between 1350~1450℃. But the price is low, has good insulation performance, can reduce the energy consumption of electric furnace. Thermal shock resistance and wear resistance are relatively poor.
Application: Suitable for low temperature tubular electric furnace wall parts.
Magnesia-chrome brick
Raw materials: magnesia and chromite as the main raw materials, adding appropriate additives.
Performance: Has a very high refractoriness, up to 2000~2200℃. At the same time, it also has good thermal shock resistance and wear resistance. However, the price is higher, and it is easy to react with alkaline substances at high temperatures.
Application: Suitable for high temperature parts of tubular electric furnace, but attention should be paid to avoid contact with alkaline substances when using.
Other special firebricks
Such as carbon bricks, zircon bricks, etc., these refractory bricks have higher refractoriness and better performance, but the price is usually higher. It is suitable for tubular electric furnace which requires high fire resistance.
Selection consideration
Temperature range: Select the appropriate firebrick type according to the operating temperature range of the tubular electric furnace.
Chemical stability: Consider the chemical compatibility of the refractory brick with the material in the furnace at high temperature to avoid adverse chemical reactions.
Thermal shock stability: Choose refractory bricks that can withstand the thermal stress caused by temperature changes in the furnace to avoid cracks and damage.
Mechanical strength: Ensure that the refractory brick has sufficient mechanical strength to withstand the erosion and wear of the materials in the furnace.
Cost-effectiveness: under the premise of meeting the performance requirements, consider the price and availability of refractory bricks, and choose cost-effective products.
Installation and maintenance
Installation
The installation of refractory bricks should follow the manufacturer's guidance and relevant standards to ensure that the brick seam is uniform and tight to avoid gas leakage and heat loss.
Maintenance
Check the wear and damage of the firebrick regularly, and replace the damaged firebrick in time. At the same time, keep the furnace clean to avoid ash accumulation and coking on the erosion of refractory bricks
Conclusion
Electric tube furnaces are essential tools in a wide range of industries and research fields, offering precise temperature control, uniform heating, and versatility in a compact package. Despite their limitations, such as limited sample size and temperature constraints, ongoing technological advancements are likely to address these issues and further expand the capabilities of electric tube furnaces. As the demand for high - quality thermal processing continues to grow in areas such as materials science, electronics, and environmental analysis, electric tube furnaces will play an increasingly important role in driving innovation and progress. By staying informed about the latest developments in electric tube furnace technology, researchers and industrial professionals can leverage these devices to achieve their thermal treatment goals more effectively and efficiently.
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