In the chemical synthesis of various reactions such as nitrification, oxidation, hydrogenation, reduction, diazotization, addition, esterification, condensation, hydrolysis, etc., the temperature should be strictly controlled to prevent impact or explosion. The temperature of heating, reflux, cooling, distillation, recrystallization, filtration, etc. should also be controlled, otherwise it is very easy to burst.

For industrial production, process operability generally involves industrial equipment and process operation itself. Laboratory temperature control: oil bath, water bath, low-temperature reaction device, liquid nitrogen, etc.

The heat transfer medium used for most reactions in most plants is water or steam, that is, at – 20 ℃~110 ℃. If the temperature required by the process is higher than 110 ℃, it needs to be replaced with heat transfer oil for heating, and the whole equipment also needs to be replaced. It is necessary to measure whether the cost can be accepted; In the case of low temperature, most ice salt baths are used for cooling. The lower limit is – 30 ℃, but the actual temperature can only reach – 20 ℃. If the temperature is required to be lower, the deep cooling method must be adopted, and the equipment and media need to be replaced.

Very high and very low temperatures will increase the process cost, so when selecting the route, try to choose those synthesis processes with the temperature between – 20 ℃ and 110 ℃.

The precision of temperature control in the laboratory can reach ± 1 °. Temperature control under industrial conditions is not as convenient as that in the laboratory. Generally, temperature control is achieved through continuous exchange of cold and hot water. Some processes may indeed require rapid heating or cooling, which can be achieved. Higher temperature heat transfer medium (such as water vapor) or lower temperature cooling medium (such as ice salt water) can be used for heating, but this method is difficult to grasp the accuracy of temperature control.

Our LNEYA refrigeration and heating equipment has a very wide temperature control range from – 120 ℃ to 350 ℃, which is suitable for the constant temperature control needs of most enterprises. The temperature control accuracy can reach ± 0.5 ℃, and the refrigeration power can be supplied from 0.5kW to 1200kW. Typical applications: dynamic constant temperature control of cold and heat sources in high-pressure reactor, dynamic constant temperature control of cold and heat sources in double-glass reactor, dynamic constant temperature control of cold and heat sources in double-layer reactor, and constant temperature control of cold and heat sources in microchannel reactor; Small constant temperature control system, temperature control of distillation system, low temperature and high temperature aging test of materials, constant temperature control of combined chemical cold source and heat source, cooling and heating of semiconductor equipment, and constant temperature control of vacuum chamber cooling and heating. With magnetic drive pump, there is no shaft seal leakage problem. High-temperature cooling technology can directly cool from 300 ℃ [because only the heat transfer medium in the expansion chamber contacts with oxygen in the air (and the temperature of the expansion tank is between normal temperature and 60 ℃), which can reduce the risk of heat transfer medium being oxidized and absorbing water in the air.

In the face of the failure of the compressor of the low-temperature cooling unit of the reactor, we need to deal with it in time to ensure normal operation.

1. The compressor of the low-temperature cooling unit of the reactor is stuck. Basically, the shaft of the compressor is stuck. At this time, the compressor cannot rotate. At this time, the refrigeration oil of the compressor may not be able to come up, resulting in insufficient lubrication of the compressor and increased friction. It will lead to the risk of jamming.

2. If there is dust or impurities in the pipeline of the low-temperature cooling unit of the reactor, it will cause the moving surface of the compressor of the low-temperature cooling unit of the reactor to be stuck. Time to look at these methods to troubleshoot.

3. The user can choose a wooden hammer or other available objects to knock on the three solder joints on the compressor when the low-temperature cooling unit of the reactor is started. Pay attention when knocking, and gently tap to make the stuck part clear. The stuck place gradually becomes loose, and it can also be solved by the impact force of the compressor of the low-temperature cooling unit of the reactor.

4. If the compressor is stuck, a capacitor can also be used to start the engine. Replace the original capacitor of the compressor of the low-temperature cooling unit of the reactor with a larger capacitor to use the increased starting force to make the compressor run more easily.

The battery pack test water cooling chiller realizes the digitization of key experimental parameters in the whole reaction process and can record and search in real time, such as temperature, stirring rate, pH, conductivity, etc., and automatically adjusts the feeding by controlling the change of pH value during the reaction process Quantity, to realize the reasonable transformation of a single instrument in batch reaction and continuous reaction, using a common database platform, can flexibly design formulas and experimental conditions, requirements, and facilitate the export and processing of experimental data.

The battery pack test water cooling chiller can be integrated automatically. The entire chemical reaction operation process is carried out on the automatic control experiment platform. Using automatic control technology, the real-time parameter table and real-time curve are used to observe the reaction process, and at the same time, the main parameters in the reaction process can be accurately controlled.

The application of automatic control of the battery pack test water cooling chiller can ensure the consistency of each parameter, and reduce the interference of human factors on the experimental results to a greater extent. Through the real-time online data collection of scientific data and process key parameters, it is helpful Study the internal laws and mechanisms of synthesis or reaction systems, and provide theoretical basis data for process optimization, equipment amplification and intelligent controllable processing technology. The equipment of the battery pack testing water cooling chiller can be customized according to actual needs, and the system functions can be designed according to actual needs, and the system has a wide range of applications.

Nowadays, the battery pack test water cooling system is more and more widely available in the market, and there are more and more manufacturers. Therefore, users need to choose qualified manufacturers.