Why is a safety valve installed in the aromatic extraction and recovery tower?
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Distinguished colleagues: The aromatic extraction and recovery tower is a vacuum tower – why is a safety valve installed? Thank you!
Safety valves are installed to prevent the equipment from experiencing overpressure； All the negative-pressure towers for cyclohexanol at Asahi Kasei in Japan are also equipped with safety valves.
The design pressure for such towers is usually 0.35 Mpa; in situations such as leaks within the steam generator or reboiler, there is a risk of overpressure, based on my personal understanding.
The tower process is prone to overpressure, so a safety valve must be installed to protect the tower.