Explanation of “Gas-Liquid Diffusion” Problem of Jacketed Laboratory Glass Reactor
Explanation of the “Gas-Liquid Diffusion” Problem of Jacketed Laboratory Glass Reactor
The inner layer of the laboratory glass reactor can be used for stirring reaction with a reaction solvent. The interlayer can be circulated through a cold and heat source. The interlayer of jacketed laboratory glass reactor can provide high temperature reactions (the highest temperature can reach 300℃); jacketed lab reactor can also do low temperature reactions (the lowest temperature can be reach -80℃); jacketed glass reactor can be evacuated for negative pressure reaction. And glass reactor laboratory unique design makes the test safer and more convenient.
Laboratory glass reactor is suitable for petrochemical, pharmaceutical, chemical, p metallurgy, polymer synthesis, and other fields. Specifically, such as catalytic reaction, polymerization reaction, supercritical reaction, high temperature and high pressure synthesis, hydrogenation reaction, etc. The uneven suspension of the solid catalyst also restricts the reaction rate of the laboratory glass reactor. In order to increase the reaction rate of glass chemical reactor, the industry generally adopts three methods of gas external circulation, liquid external circulation, and gas internal circulation.
1. Outer gas circulation of laboratory glass reactor
The reaction gas is led out from the gas phase space, and the gas is pressurized by the compressor and then introduced from the bottom of the laboratory glass reactor. With the cooperation of the magnetic stirrer, a larger gas holding capacity and contact area can be obtained, thereby increasing the reaction rate.
The advantage is that any amount of gas circulation can be obtained, but the disadvantage is that a large amount of hydrogen circulation equipment is required, which increases the complexity and capital investment of the device.
2. Liquid external circulation of glass reactor laboratory
The reaction liquid is pumped out from the bottom of the jacketed lab reactor with a centrifugal pump. The glass reactor laboratory sucks the reaction gas in the gas phase space of the reactor through a venturi tube and fully mixes and disperses it in a venturi tube to obtain very fine bubbles. Significantly increase the gas-liquid contact area and reaction rate.
The advantages of the liquid external circulation type are fast reaction rate, continuous production, convenient heat transfer, etc. The disadvantage is that energy consumption is large and the requirements for the circulating pump are very strict.
3. Gas-liquid internal circulation of jacketed lab reactor
Jacketed lab reactor is a self-absorption gas-liquid reactor. It is one of the core technologies of the gas/liquid reaction device. Glass reactor laboratory is a reaction that can suck the gas in the upper space of the reactor by itself without additional gas transportation machinery for gas-liquid contact.
Laboratory glass reactor uses a specially designed hollow turbine agitator to continuously suck in the reaction gas on the liquid surface while mixing the material and liquid to achieve the purpose of gas-liquid circulation and dispersion. At the same time, the combined high-efficiency axial flow paddle can combine the gas and the solid catalyst evenly dispersed in the reactor to achieve the purpose of rapid response.