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How to precisely control the temperature of high-pressure chemical reactor and prolong its life?
May 11, 2018

Generally, the temperature of a high-pressure chemical reactor is very easy to control, but in practice, due to the high requirements of the experiment, we need to accurately control the temperature of a high-pressure chemical reactor in order to achieve our experimental expectations.


In order to more accurately control the temperature of high-pressure chemical reactors, it is necessary to consider from the characteristics of its temperature changes, in the reaction process of equipment is usually accompanied by a strong thermal effect, resulting in a sharp increase in the temperature inside the high-pressure reactor, then in the jacket Zhong Tong takes excess heat away with liquid nitrogen to reduce the temperature in the kettle. However, because the heat exchange between the reactor and the outside world mainly depends on the heat transfer between the reaction chambers, it takes a certain amount of time for the inner wall to heat the entire reactor, which results in a large time lag.


The temperature control characteristics in high-pressure chemical reactors generally depend on the severity of the chemical reaction in the reactor. The entire production process starts from the initial temperature rise, the intermediate constant temperature to the final temperature drop, and the object has a significant time variation. And, for a specific stage, due to the instability of the chemical reaction rate, the process gain, inertia time, and pure delay will also change accordingly.


In fact, for a temperature process of a high-pressure chemical reactor, there are three forms of heat transfer: convection, convection, and radiation. However, the proportion of various heat transfer modes is different at different stages. Therefore, we must fully grasp the above three points in order to more accurately control the temperature of the reactor.


In addition to temperature, the service life of high-pressure chemical reactors can also be extended in different ways. For example, when using, the refrigerant inlet valve must be closed, and the remaining refrigerant in the disease prevention pot and the jacket must be re-entered. Material, start the stirrer.


Then turn on the steam valve and electric heating power. After reaching the required temperature, turn off the steam valve and electric heating power, and then turn off the stirrer after 2~3 minutes. Wait until the processing of the high-pressure chemical reactor is finished, drain the pan and the residual condensate in the jacket, rinse with warm water as quickly as possible, brush off the sticky material, and then use the alkaline water of 40~50°C to thoroughly clean the inner wall of the container. Rinse with clean water.


Not only that, in order to extend the service life of high-pressure chemical reactors can not be separated from the correct maintenance, we must always pay attention to the working conditions of the entire equipment and reducer, reducer lubricant shortage should be immediately added, electric heating medium oil every six months to For replacement, check the safety valves, pressure gauges, thermometers, distillation holes, electric heating rods, and electrical instruments on the jacket and upper part of the lid, so as to make it more durable.

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