Reactor SIS settings
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The pressure of the reactor vessel needs to be protected by a SIS system; in case of overpressure, the reaction system connected to that line should be shut down. However, there are too many openings on the reactor vessel at present. Could we install pressure tapping points at both the top and bottom of the reactor vessel, as well as one on the inlet pipeline, so that a 2oo3 configuration can be used for SIS protection? Reactor vessel 3800, inlet pipe 250.
Just like this, the values of these 3 level gauges will be different; it’s not easy to work with 2oo3, right?
It’s not the liquid level, but rather the pressure. Moreover, there are two pressures related to the reactor: one is the pressure on the inlet pipeline of the reactor. The role of the SIS is to prevent the reactor from experiencing overpressure. Can the pressure on that inlet pipeline be used as a sensing point for the SIS?
I misread it: It’s more convenient to take pressure readings directly on the upper outlet pipe; the pressures at the bottom and the top must be different, as there is a pressure drop
For a 3-out-of-2 selection based on overpressure in the reactor, the variable to be chosen should be the one that represents the pressure inside the reactor; the pressure in the inlet pipeline is not suitable, nor is the pressure at the bottom of the reactor – instead, a point from the top of the reactor should be used.
The pressure in the reactor tank needs to be protected by a SIS system; this cannot be handled casually on one’s own – a qualified organization must carry out the evaluation and design. Otherwise, it’s fine as long as nothing goes wrong; if something does go wrong, it will be **annoying**. Moreover, after it is completed by oneself, an expert team will review the design document, and if any discrepancies are found, corrections will be required.
You set these 3 points. . The pressure at the bottom is definitely higher than that at the top; 2oo3 is not comparable. Rather than talking too much, it’s better to simply make an opening in the pipe and install 3 meters there.
Bottom pressure measurement is certainly inaccurate, unless it is a reactor where the reaction takes place entirely in the gas phase； Pressure measurement on the pipeline is required, with the measurement point needing to be close enough to the reaction vessel ；
Mm-hm, the reaction takes place in the gas phase; the exact location for pressure measurement on the pipeline hasn’t been determined yet. If this design works, then it’s fine.
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2oo3 or 2oo2; the corresponding input source must be the same.