During the long-term use of the reactor, a large amount of dirt will accumulate, which will affect the normal operation of the reactor, increase energy consumption, and reduce product quality. In the reactor for long-term use, the reactants are easily left and gradually deposited in the reactor, which not only affects the capacity of the reaction, but also the components in the residue may affect the reaction, which may adversely affect the quality of the product, and may even cause serious The catastrophic reaction jeopardizes the safety of personnel and equipment.
Therefore, in addition to strict daily maintenance and inspection, the reactor is also cleaned regularly. The reactor cleaning mainly includes mechanical cleaning and chemical cleaning.
Dirt deposited in the reactor
Mechanical cleaning
Mechanical cleaning is the most common method in reactor cleaning. The most common one is high-pressure water gun cleaning. It has obvious effects on general dirt such as powder agglomeration deposition, simple and convenient operation, low cleaning cost, low damage, and general loss to the kettle. Smaller but narrower. In most production and test, the dirt in the reactor is difficult to achieve with high-pressure water gun cleaning. Under special circumstances, such as solidification of the polymerization solid, it needs to be cleaned with other cleaning methods, such as breaking, cutting and so on.
For viscous or highly adsorbable liquid-based dirt, it can be removed by scrubbing method. This method is especially suitable for glass-type reaction kettle and enamel reaction kettle. The small-sized kettle can be used with rag or test tube brush to achieve the effect and easy to operate.
Mechanical cleaning reactor
Precautions
Mechanical cleaning uses a high-pressure water gun method to reduce the loss of the kettle, but other mechanical cleaning methods should be handled with care in a simple and rough operation to avoid damage to the kettle. At the same time, mechanical cleaning is limited by the method of operation, and is particularly suitable for detachable reactors, which are limited in applications in large or non-removable kettles.
Chemical cleaning
Chemical cleaning is the most commonly used method in reactor cleaning. It has a wide range of applications and obvious effects, but the cost is high. At the same time, a large amount of chemical waste liquid is difficult to handle and environmental pollution is high. In chemical cleaning, it is first necessary to determine the dirt composition, and then select the corresponding cleaning solvent, at the same time need to evaluate the cleaning safety and the corrosion strength of the kettle. Chemical cleaning can find the corresponding cleaning measures for most of the dirt, and the cleaning effect is also good, but in the consideration of the kettle and the environment, it is generally necessary to coordinate the relationship between the cleaning effect and the loss for cleaning.
Precautions
In chemical cleaning, in addition to being effective against dirt, the cleaning solvent will also corrode the reaction kettle and other related accessories, so it is necessary to select the cleaning agent and equipment and personnel protection.
Cleaning effect
After cleaning, the reaction conditions can be directly improved, the heat transfer efficiency can be improved, and the energy consumption of the enterprise in the production process can be greatly reduced. At the same time, the cleaning of the reaction kettle can ensure the unity of the reaction, reduce the occurrence of impurity reactions, and greatly reduce the occurrence of safety accidents. Probability; In addition, the clean reactor working environment can greatly reduce the load on the heat exchange equipment and prolong the service life.
After cleaning the inner wall of the reactor
Establishing a good reactor cleaning and maintenance system is of paramount importance to laboratories and manufacturing companies, both in terms of business efficiency and safety.
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