For some customers who are new to chemglass 20l jacketed reactor, they may wonder what glass reactors are used for, so today, I will briefly explain what small laboratory glass reactor are for my friends on Zhihu. And the method of using the glass reactor. I hope this article can dispel your doubts and let you understand the use of type of glass reactors. Glass reactors are actually just one of many reactors. Other reactors include glass-lined reactors, hydrothermal synthesis reactors, and magnetic stirring reactors. , Electric heating reactor and steam reactor etc. But small laboratory glass reactor are the most commonly used. The glass reactor has the characteristics of no pollution, high temperature resistance, corrosion resistance, sanitation, and fast heating speed. The basic working principle of the small laboratory glass reactor is to stir the reaction in a closed container with a set constant temperature under normal pressure or negative pressure, and control the reflux and evaporation of the solution. There are single-layer glass reactors, double-layer glass reactors and triple-layer glass reactors. The most common of these is the jacketed glass reactor manufacturer.

 
The application of the type of glass reactor can be summarized as: high temperature reaction (the highest temperature can reach 300), low temperature reaction (the lowest temperature can reach -80), vacuum reaction, constant temperature solvent synthesis reaction, distillation reflux reaction, vacuum distillation reaction, separation and extraction reaction, purification reaction, concentration reaction, stirring reaction, etc. According to different use conditions and requirements, users can adjust the use temperature and pressure to adapt to different experimental environments.
 
As a biochemical instrument, the double-layer glass reactor is widely used in industry, so it is widely used in modern fine chemicals, scientific research experiments, biopharmaceuticals, colleges and universities, etc. It is an ideal equipment for teaching, experiment, production and pilot test.
 

Features of material selection:

1. Pt100 temperature sensor probe has high temperature measurement accuracy and small error, which can effectively improve work efficiency.
2. The components are sealed with tetrafluoroethylene, which can maintain a good vacuum degree and maintain high-precision sealing under working conditions. And there is a chip collection groove.
3. PTFE discharge valve, movable interface, clean and fast discharge.
4. Double PTFE stirring paddle, suitable for mixing low viscosity or viscous liquid.
5. Alloy steel mechanical seal, PTFE connection port, high-precision seal keep in working condition.
6. High-quality brushless motor, low noise and can be used continuously for a long time, with long service life.
7. After the reaction, the cooling or heating solution in the interlayer can be discharged, so that there is no residue inside the interlayer.
8. The materials used have excellent physical properties and chemical properties, and the operation will be relatively stable during the stirring process of frequency conversion speed regulation, and even if the torque is large, it will not catch fire.
9. The overall stainless steel column moving frame structure, five-port reaction kettle cover, a full set of glass internal reflux, liquid addition, temperature measurement, etc.

 

Double glass reactor distillation principle:

Most people's understanding of the word distillation only knows it but they don't know why. Although we usually use distillation equipment such as type of glass reactor , we only use tools. Next, I will take you with us. Learn how distillation works. The analysis was carried out by taking the separation of two-component mixture as an example. After the raw material liquid is heated, partial vaporization will occur, in which the volatile components will be concentrated in the steam, while the remaining liquid will produce higher non-volatile components, which achieves the separation of the two to a certain extent. . The greater the difference in volatilization between the two, the greater the concentration of the two substances. Using an industrial rectification device, the partially evaporated liquid phase is directly contacted with the partially condensed gas phase, thereby realizing partial evaporation of the liquid phase and partial condensation of the gas phase, that is, partial evaporation of the gas phase and partial condensation of the gas phase, so as to realize the partial evaporation of the gas phase and the partial condensation of the gas phase. Partial evaporation and partial condensation of the gas phase.
 
The molecules of the liquid tend to spill over the surface due to molecular motion. This trend increases with increasing temperature. When a liquid is placed in a closed vacuum system, the molecules of the liquid will continuously escape, forming a vapor on the surface of the liquid, after which the molecules will escape from the vapor, and then the molecules will escape from the vapor back into the liquid, and the vapor remains certain pressure. At this point in time, the liquid surface is saturated, which is called saturated vapor, and the pressure it exerts on the liquid surface is called the saturated vapor pressure. The results show that the saturated vapor pressure of the liquid is only related to the temperature, that is, the liquid has a certain vapor pressure at a certain temperature. Refers to the pressure under which a liquid is in equilibrium with its vapor, regardless of the amount of liquid and vapor in the system.
 
The combined operation of heating a liquid until it boils, turning it into a vapor, and then cooling the vapor and condensing it into a liquid is called distillation. Obviously, distillation can separate volatile and non-volatile substances, as well as mixed liquids with different boiling points. However, in order to obtain a good separation effect, the boiling points of the components of the mixture must be very different (at least 30°C or more). During atmospheric distillation, since the atmospheric pressure is usually not exactly 0.1MPa, strictly speaking, the boiling point plus the correction value should be observed, but since the deviation is usually small, even if the atmospheric pressure differs from the atmospheric pressure by 2.7KPa, the correction value is only ± 1°C, so it can be ignored.
 
The above is what ZZKD instrument brings to you about the principle of double-layer glass reactor distillation that you don't know. If you have any questions, you can contact us at any time, and we will serve you wholeheartedly.