Methanol distillation tower top safety valve
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This post was last edited by qy576100527 on 2017-8-13 08:15. The diagram shows that three safety valves are installed at the top of the methanol distillation tower; the pressure at the tower top is generally around 50 Kpa. 1. What is the purpose of installing 3 safety valves? 2. Are the takeoff pressures equal? Everyone is welcome to join the discussion; there are rewards at the end of the month, with rewards for wealth and charm depending on the quality of the contributions.
To prevent the tower from overpressuring, the operating pressure should theoretically be the same; in practice, this is not always the case. However, the operating pressure of the safety valve must be lower than the design pressure of the tower! It serves to protect the tower equipment!
Operating pressure < relief valve setting pressure < design pressure
Is the flow capacity of a single safety valve insufficient? The set pressures of the three safety valves may vary slightly, but they must all be lower than the design pressure. Designing three safety valves also facilitates offline maintenance of each one individually without shutting down the system later (it seems that your safety valves don’t have front and rear valves, at least not in the drawings).
1. What is the purpose of installing 3 safety valves? The discharge volume of each safety valve is reduced, thereby decreasing the likelihood of leakage. 2. Are the takeoff pressures equal? Not equal.
The pressure should be the same; firstly, there’s a concern that if one valve fails to release pressure in time, it might be easier for twenty or more valves to reset to their original state, making it less likely that there will be a significant leak.
Why isn’t there a shut-off valve at the inlet? How to perform maintenance?