Reward for information on the installation of safety valves before and after the pressure relief valve
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The product from the top of one reactor is sent to the bottom of another reactor; there is a pressure relief valve on the product pipeline. Does this pressure relief valve separate the two reactors from each other? Is it necessary to install a safety valve on each unit separately? Consider the overpressure condition when the pressure relief valve is closed? Solve
They are not separated; a separate safety valve needs to be installed, and overpressure conditions must be taken into account
The pressure relief valve is unrelated to the safety valve; a safety valve must definitely be installed separately
Can a pressure relief valve be fully closed? I had never seen a case where it was said to be due to the safety valve closing accidentally before
You’d better post the entire relevant process for us to see; otherwise it’s hard to analyze
A sudden increase or decrease in the pressure relief valve setting can cause overpressure in one of the reactors, so safety valves must be installed.
No, a pressure relief valve cannot divide it into two separate systems. You can consider the scenario where the pressure relief valve fails.
The product from the top of one reactor is sent to the bottom of another reactor; there is a pressure relief valve on the product pipeline. Does this pressure relief valve separate the two reactors from each other? Answer: The pressure relief valve serves as a check valve; the flow in the forward direction should not be separated, while it is separated in the reverse direction (unless there is internal leakage in the valve). In a production process, there’s no such concept of separation, right? ； “Is it necessary to install a safety valve on each unit separately? Consider the overpressure condition when the pressure relief valve is closed? ” Answer: For the first reactor, it depends on what the production conditions are; it may be necessary to have overpressure protection measures, and if so, safety valves must be installed ； Another reactor must be equipped with a safety valve. “That’s what ‘considering the overpressure condition when the pressure relief valve is closed’ means. (For reference)
We have 10 reactors, and the feeding method is as you mentioned. We have installed a safety valve on each one, primarily to prevent overpressure in any single reactor in the event of an accident.
Of course, safety valves need to be installed separately, as pressure relief valves can experience two types of failures: complete disconnection or short circuiting.