Can an air pipeline be connected to the polymerization reactor?
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The distribution tray on the polymerization reactor in our facility is equipped with pipelines for nitrogen, steam, pure water, and air, which are connected to the reactor via valves. Is this acceptable? If it’s not possible, what is the basis for that?
Let’s take a look at the PID first, and learn about the use of various substances in the process. Also check the DCS to see the status of various substances during operation.
The compressed air pipeline connected to the polymerization reactor is used for purging the reactor during cleaning; it usually needs to be disconnected to prevent operators from accidentally opening the valve.
I also think it should be separated, but the boss said that in other places it’s all connected and no one separates them; I just want to find some evidence to convince him. Why were they connected together during the design phase? Just disconnect the gum tube used for purging and connect them together; I think it’s quite risky to have them connected in this design. When pure water or steam is used to raise the temperature, if there is a leak in the air valve, air will end up inside the tank
This isn’t the most dangerous factor; the real danger arises when compressed air is accidentally introduced during the reaction in the polymerization reactor. So it’s better to disassemble it and keep it on standby just in case
When not in use frequently, the valve handle can be removed and stored properly
Your specific requirements are not clear; let me first explain my situation. The reaction vessel can withstand a pressure of 0.1 MPa, its operating temperature is 300°C, and its volume is 5 m3. There are flanges pre-installed at the top of the equipment, through which nitrogen, compressed air, and ethylene glycol are introduced respectively to the inclined tubes； For pressurized media such as compressed air and nitrogen, you can install a pressure reducing valve at the inlet to ensure that the reaction vessel does not experience overpressure; this is for reference only
Yes, the air seal needs to be removed; otherwise, leaks inside will cause problems.
It definitely has to be disconnected. . . We usually use blowers to replace the air when cleaning the kettle
Pipelines that are set up but not used during normal production are generally prepared for maintenance purposes. These pipelines are usually equipped with 8-shaped blind flanges to prevent leaks from the valves; disassembly is a method of isolation, but it is not safe