In chemical experiments and industrial production, glass reactor is one of the commonly used experimental equipment. Among them, the double-layer jacketed glass reactor has better temperature control performance and experimental effect due to its unique structure. In this paper, the temperature control method of double-jacketed glass reactor will be introduced in detail, in order to provide reference for research and application in related fields.
1. The structure of a double-layer jacketed glass reactor.
The double-layer jacketed glass reactor is mainly composed of an inner tank, an outer jacket, a stirrer, and a sealing material. Among them, the inner tank is used to hold chemical reagents and reactants, and the outer jacket plays the role of heat preservation and temperature control. The design of the double-layer jacket structure makes the reactor have good thermal insulation performance, which can effectively reduce heat loss and improve the stability and safety of the experiment.
2. Temperature control method of double-layer jacketed glass reactor.
1.Electric jacket heating.
Heating is achieved by wrapping the electric jacket around the reactor. The heating jacket is usually made of metal material and is equipped with an intelligent temperature controller that can set the temperature according to the needs of the experiment. Through the heating of the electric heating jacket, the reactants can be reacted at the set temperature. Due to the advantages of uniform heating and adjustable temperature, electric heating jacket heating is one of the commonly used heating methods for double-jacketed glass reactors.
2.Hot water is circulated for heating.
Hot water circulation heating is a way of heating by introducing hot water into the reactor jacket. Hot water usually enters the reactor jacket from an external pipe and circulates to keep the temperature constant. Hot water circulating heating has the advantages of high temperature control accuracy and uniform heating, and is suitable for experiments that require precise temperature control. However, hot water circulation heating requires additional water circulation equipment and heating equipment, and the operation is more complicated.
3.Heat in an oil bath.
Oil bath heating is a method of heating by injecting heat transfer oil into the reactor jacket. Heat transfer fluids have good thermal conductivity and stability, and are able to maintain low viscosity at high temperatures. Oil bath heating has the advantages of high temperature control accuracy and uniform heating, which is suitable for experiments that require high temperature heating. However, oil bath heating requires regular replacement of the heat transfer oil and cleaning of the jacket, which is cumbersome.
4.Refrigeration and heating cycle machine.
Dynamic temperature control from minus 120 degrees to high temperature 300 degrees, and the same heat conduction fluid is quickly refrigerated and heated. Fully enclosed pipeline, reduce the demand for heat transfer fluid, and the expansion tank does not participate in the circulation. The temperature output of the heat transfer fluid can be dynamically controlled according to the real-time temperature of the external sensor. It can handle exothermic or endothermic reactions, with high efficiency and stability, reliable and repeatable temperature control curves, magnetic drive pump, no shaft seal leakage, and controllable circulating flow pressure. Siemens PLC module, slope temperature control, multi-stage program temperature control, high precision.
3. Selection of temperature control method of double-layer jacketed glass reactor.
When choosing the temperature control method of double-layer jacketed glass reactor, it needs to be considered according to the specific situation and needs of the experiment. If the experiment requires precise temperature control, hot water circulation heating or oil bath heating can be selectedIf the experiment needs to heat up quickly, the refrigeration and heating cycle machine can be selected. In addition, it is necessary to consider the safety and environmental protection of the experiment, and give priority to the safe and environmentally friendly heating method.
In short, as an important experimental equipment, the choice of temperature control method of double-jacketed glass reactor directly affects the success or failure of the experiment and the reproducibility of the results. Therefore, in practice, it is necessary to choose the appropriate temperature control method according to the specific situation to ensure the accuracy and reliability of the experiment. At the same time, it is also necessary to strengthen the maintenance and maintenance of the equipment to ensure the normal operation and service life of the equipment.