Heating Mantle 5000ml
Feature: Heating Function
Capacity: 100ML/250ML/500ML/1,000ML/2,000ML/3,000ML/5,000ML/10,000ML/20,000ML
2.Digital Temperature Control Type
Feature: Heating Function, Temperature Display, Temperature Sensor
Capacity:100ML/250ML/500ML/1,000ML/2,000ML/3,000ML/5,000ML/10,000ML/20,000ML/50,000ML
3.Digital Magnetic Type
Feature: Heating Function, Temperature Display, Temperature Sensor, Magnetic Stirring
Capacity:100ML/250ML/500ML/1,000ML/2,000ML/3,000ML/5,000ML/10,000ML/20,000ML/50,000ML
4.Digital Display Constant Temperature Magnetic Force
Feature: Heating Function, Temperature Display, Time Display, Temperature Sensor, Magnetic Stirring, Timer
Capacity:100ML/250ML/500ML/1,000ML
Description
Technical Parameters
A heating mantle 5000ml, is a laboratory apparatus used for gentle and even heating of round-bottomed flasks or other laboratory vessels up to a specified volume, in this case, up to 5000 milliliters (ml). It consists of a flexible, heat-resistant fabric or silicone sheath that wraps around the exterior of the vessel. Inside this sheath, there are heating elements, typically electric wires or coils, that generate heat when energized.
The 5000ml heating cover is suitable for experimental and production scenarios requiring high capacity and uniform heating, especially in the organic synthesis, material preparation, pharmaceutical and food industries. You need to configure the parameters based on your requirements (temperature range, temperature control accuracy, and security).
Description
The heating mantle 5000ml is designed to distribute heat uniformly around the vessel, eliminating hot spots that can occur with direct heat sources like flames or hot plates. This even heating is crucial for many chemical reactions and experiments, as it promotes better control over reaction temperatures and minimizes the risk of local overheating or boiling over.
The 5000ml capacity refers to the maximum size of the vessel that can be safely and effectively heated by the mantle. It ensures that the heating elements are positioned and powered appropriately to maintain an even temperature throughout the entire volume of the vessel, up to its 5000ml capacity.
In use, the heating mantle is placed around the vessel, connected to a power source, and then turned on to start the heating process. Temperature controls, such as a thermostat or variable transformer, may be employed to regulate the heat output and maintain a desired temperature for the reaction or experiment.
Heating mantles are commonly used in chemistry, biology, and other scientific fields where precise temperature control is essential. They are particularly useful for reflux reactions, distillations, and other processes that require gentle and uniform heating of large volumes of liquid.
Specifications
Security
The use of a heating mantle can potentially lead to the bursting or cracking of glass laboratory ware, though this outcome is not inevitable and can be mitigated by proper precautions and handling. A heating mantle is a device designed to uniformly heat flasks, beakers, or other round-bottomed glassware, often used in chemical reactions requiring gentle and controlled heating.
Here are some reasons why a heating mantle might cause glassware to burst or crack, along with preventative measures:
Rapid Heating or Overheating: If the glassware is heated too rapidly or exceeds its temperature tolerance, it can undergo thermal shock, which leads to cracking or bursting. To prevent this, ensure the heating mantle is set to a gradual temperature increase and does not exceed the recommended maximum temperature for the glassware.
Uneven Heating: While heating mantles are designed for uniform heating, improper use or defects in the mantle can result in hot spots that locally overheat the glassware. Regularly inspect the mantle for damage and ensure it is in good working condition. Additionally, stirring the contents of the glassware can help distribute heat more evenly.
Incompatible Glassware: Not all glassware is suitable for use with a heating mantle. Some types of glass, especially thin or fragile ones, may not withstand the heat or pressure generated by the mantle. Always use glassware specifically designed for heating, such as borosilicate glass, which has a higher thermal shock resistance.
Improper Placement: Placing the glassware too close to the edges of the heating mantle or failing to secure it properly can lead to direct exposure to excessive heat or accidental knocks that could damage the glass. Ensure the glassware is centered and stable within the mantle.
Abrupt Cooling: Sudden temperature changes, particularly rapid cooling after heating, can also cause thermal shock. Allow the glassware to cool slowly and gradually, either by turning off the heating mantle and letting it cool naturally or by using a cooling bath under controlled conditions.
In summary, while a heating mantle can pose risks to glass laboratory ware, these risks can be significantly reduced by following proper safety procedures, using compatible and appropriate glassware, and maintaining the heating mantle in good working condition. Always consult the manufacturer's instructions and safety guidelines when using any laboratory equipment.
Application in crystallization process
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In the crystallization process, the heating mantle 5000ml provides an ideal thermal environment for large-scale crystallization operations through precise temperature control and uniform heating. Its core advantage is that it is suitable for large-capacity containers (such as 5L crystallization reactors), which can effectively promote solution supersaturation control, crystal growth and purification, and significantly improve crystallization efficiency and product quality. The following three dimensions are explained from the process principle, application advantages, and operation points:
The process principle
Supersaturation control
The temperature of the solution is maintained above the crystallization point through the heating cover, and the supersaturation of the solution increases uniformly when the temperature is lowered slowly, so as to avoid excessive nucleation caused by excessive local concentration and the formation of fine crystals.
Example: When preparing paraxylene isomers, controlling the cooling rate (such as 0.5-1℃/min) can obtain crystals with a particle size of 50-100μm.
Crystal growth and purification
Uniform heating ensures stable crystal surface temperature gradient, promotes directional arrangement of solute molecules and reduces impurity retention. Combined with the sweating process (heating to near the melting point), low melting point impurities in the crystal interlayer can be removed.
Data: In the crystallization of bisphenol A, the purity of melt crystallization method can reach 99.9%, which is better than that of traditional distillation method (99.5%).
Multistage crystallization optimization
The high-capacity design supports multi-stage crystallization operations, progressively enriching the target product through repeated solution-crystallization cycles.
Case: When purifying naphthalene from ethylene tar, three melting crystallization can increase the purity of naphthalene from 5% to 93%, and the yield is over 40%.
Application advantages
Energy-saving and efficient
The melting crystallization operation temperature is lower than that of rectification (such as bisphenol A crystallization temperature is only 150-160℃), the latent heat of crystallization is much less than the latent heat of vaporization, and the energy consumption is reduced by more than 30%.
Comparison: The energy consumption of the traditional distillation method is about 1200kJ/kg, and the melt crystallization method only needs 400kJ/kg.
Environmental protection and safety
No solvent recovery, avoid volatile pollution of organic solvents, meet the requirements of green chemical industry.
Regulations: Comply with the emission limits of volatile organic compounds (VOCs) under the EU REACH regulation.
Device compatibility
It can be linked with magnetic stirrer and condenser to realize automatic control of crystallization process.
Configuration: Temperature control accuracy ±1℃, mixing speed 0-1000rpm adjustable.
The main points of operation
Temperature control
Heating stage: heating at the rate of 5℃/min to 5-10℃ above the boiling point of the solvent to ensure that the solute is completely dissolved.
Crystallization stage: Cooling at the rate of 0.5-2℃/min, maintaining susaturation in the metastable region (△C=0.1-0.5g/100g solvent).
Case: When acrylic acid crystallizes, the cooling rate is too fast, resulting in a crystal transformation (from alpha type to beta type).
Mixing optimization
Speed: 300rpm at the beginning of crystallization promotes solute dispersion, and 50rpm at the later stage reduces crystal fragmentation.
Impeller design: axial flow mixing impeller is used to ensure that the temperature difference between the upper and lower layers of the solution is less than 2℃.
Sweating process
Heating rate: 0.1-0.3℃/min to avoid crystal melting too fast resulting in entrainment of mother liquor.
Sweating time: adjusted according to the thickness of the crystal layer (such as 4-6 hours for 10mm crystal layer).
Effect: Crystal purity can be increased by 2-3 orders of magnitude after sweating.
Typical application case
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Matter |
Process parameter |
Product indicators |
|
Bisphenol A |
The crystallization temperature was 155℃, the cooling rate was 0.8℃/min, and the sweating temperature was 158℃ |
Purity 99.9%, particle size 200-500μm |
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P-xylene isomer |
Crystallization temperature -10℃, cooling rate 0.5℃/min, sweating temperature -8℃ |
The purity of m-xylene is 98.5%, the purity of o-xylene is 99.2% |
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Monochloroacetic acid |
Crystallization temperature 75℃, cooling rate 1.5℃/min, sweating temperature 78℃ |
Purity 99.0%, yield 85% |
Technological expansion
Zone melting coupling
Combined with mobile heaters, continuous crystallization is achieved, suitable for high purity requirements (such as semiconductor-grade monocrystal silicon preparation).
Vacuum fused crystallization
Operates under vacuum to reduce the melting point, suitable for heat sensitive substances (such as biological products).
Ultrasonic auxiliary
Through the ultrasonic field to promote crystal nucleation, shorten the crystallization time (such as ultrasonic frequency 20kHz, power 100W).
Purchase suggestion
Temperature range
Choose from -50℃ to 400℃ wide temperature zone models, compatible with different crystallization systems.
Temperature control accuracy
High precision (±0.5℃) suitable for pharmaceutical grade products, ordinary accuracy (±2℃) to meet the needs of industrial grade.
Safety
Preferred models with explosion-proof certification (e.g. ATEX) for organic solvent crystallization.
Extended functions
Support RS485/Modbus communication, easy to integrate into the DCS control system.
Through the rational application of heating mantle 5000ml, the efficiency of crystallization process and product quality can be significantly improved, especially in the fields of organic purification and fine chemical production.
About US
Our heating mantle 5000ml boast several key advantages. Crafted with premium materials, they ensure uniform and gentle heating, preventing hot spots that can damage glassware. Designed for durability and longevity, they undergo rigorous testing to withstand heavy use. Energy-efficient, they minimize power consumption while maintaining precise temperature control. Safety features like automatic shut-off and overheat protection safeguard users and equipment. Plus, our mantles are compatible with a wide range of glassware, making them versatile for various laboratory applications.
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