The reactor is a key equipment in latex production. Due to long-term accumulation, it is difficult to remove the rubber buildup on the inner wall, stirring rod, and accessories using high-pressure water guns, which seriously affects the heat exchange and production of the reactor. Using a reactor electric heater to heat the entire reactor modifies the rubber buildup to remove the attachments. Below we will introduce in detail:
During latex production, due to the lack of timely measures, the rubber buildup on the inner wall and accessories of the reactor becomes thicker and thicker, and the adhesion becomes stronger. High-pressure water jet cleaning methods have been adopted, with water gun pressure reaching 40MPa, but the effect is poor, time-consuming and labor-intensive, and difficult to effectively remove. For excellent chemical cleaning methods, due to the inability to find an effective cleaning agent to dissolve the rubber, they cannot be used either. After analysis, we selected the electric heating method to heat the entire interior of the reactor, modifying the rubber buildup to achieve the purpose of removing attachments. On-site implementation of this method to remove attachments is introduced.
During on-site implementation, all connections of the reactor should be disconnected and isolated with asbestos gaskets. The electric heating components are fixed inside the reactor using brackets, and the electric heating components are insulated from the container with insulating ceramic tubes.The reactor electric heater heats the entire reactor that has been purged with nitrogen, with the temperature controlled at 250-300, and maintained at a constant temperature for 3-5h, heating the attachments to the point of carbonization. After cooling, the carbonized material is washed with a high-pressure water gun and supplemented by manual removal. Among them, an umbrella cap is added above the combined electric heater to prevent oil droplets from falling on the electric heating plate, causing local combustion and ensuring safe construction. The system adopts programmed temperature rise, gradually heating, introducing a small amount of nitrogen from the bottom of the reactor to dilute the smoke concentration inside the reactor, and adding an exhaust fan to promptly extract the smoke from the reactor.
The electric heating method can effectively remove reactor attachments. The operating temperature is controlled at 250-300, and the attachments can be treated when melted or carbonized. The appropriate temperature avoids a large amount of smoke and also reduces the impact of carburization on the inner wall of the stainless steel reactor on future production. The oil droplets precipitated during heat treatment will burn when exposed to open flames, posing a safety hazard. During on-site implementation, an umbrella cap is added above the combined electric heater to prevent local combustion of oil droplets. During construction, the system adopts programmed temperature rise, gradually heating, and adds an exhaust fan to promptly extract the smoke from the reactor. After cooling, the carbonized material is washed with a high-pressure water gun and supplemented by manual removal.
