What Are The Preparations Before Using A Stainless Steel Reaction Kettle?

The preparation before using a stainless steel reaction kettle involves a rigorous and coherent procedure, focusing on comprehensive safety inspections and meticulous equipment verification to ensure operational safety and stability. This serves as the foundation for smooth reaction processes and is crucial for preventing equipment damage and safety incidents.

Preparation begins with a thorough and systematic equipment inspection. First, carefully examine the kettle body and sealing surfaces to ensure there are no damages, scratches, or corrosion. Particular attention should be paid to the sealing surfaces between the kettle lid and the body, which must be smooth and clean, as this is the first line of defense against leaks during the reaction. Next, inspect the stirring system to ensure that components such as the stirrer, motor, and reducer operate without unusual noise and are well-lubricated, with the stirring shaft rotating smoothly and the blades securely installed. For all safety attachments on the equipment, such as safety valves, pressure gauges, and thermometers, each must be verified to be within their calibration validity period and confirmed to provide accurate readings and reliable, sensitive operation. Simultaneously, check that the pipelines connected to the heating or cooling systems are clear. Manually test all valves (including feed inlets, discharge outlets, vent valves, etc.) to ensure they open and close smoothly without sticking and are in their correct positions. If the equipment uses thermal oil for heating, the oil level in the jacket must also be checked and confirmed as sufficient and meeting requirements before startup. Once these checks are complete, the reaction kettle should be thoroughly cleaned using appropriate cleaning agents and methods to remove any impurities that could affect product quality or equipment performance. After cleaning, rinse with clean water and dry completely.

After confirming the equipment's condition, proceed to the material preparation and feeding stage. This phase emphasizes safety and precision. According to the production formula, raw materials should be added in the specified proportions and sequence, with strict control over the total feeding volume—typically not exceeding 80% of the kettle's rated capacity—to allow sufficient space for reaction expansion and boiling. During feeding, special care must be taken to prevent hard metal objects or other impurities from falling into the container, which could scratch the inner walls. Additionally, significant temperature differences between the material and the kettle wall should be minimized to avoid adverse effects on the equipment's lifespan due to sudden thermal stress. After feeding, double-check that the kettle lid is securely tightened according to requirements to achieve a reliable seal, and ensure all feed valves are tightly closed.

Finally, before starting the equipment for heating or stirring, there are several key final confirmation steps. Depending on the specific process requirements, follow the correct sequence for starting the equipment: typically, the stirrer should be activated first. Once its smooth and stable operation is confirmed, gradually initiate the heating or cooling system. If steam or electric heating is used, the initial temperature increase must be slow and uniform to prevent localized overheating or sudden boiling of the medium. Only after strictly and sequentially completing all the above steps—inspection, cleaning, feeding, and startup confirmation—can the stainless steel reaction kettle proceed to the formal operation phase. This lays a solid foundation for safe and efficient production.