How to put the pressure difference line of the hydrogenation reactor into use
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As the title suggests, if there are three bed layers, how should the pressure difference in the hydrogenation reactor be controlled? Are the valves for each bed layer open? If only the pressure difference of a single bed layer is to be measured, does it suffice to close the remaining bed layers, or is it also necessary to close the valve at the bottom of the reactor?
Check the PID diagram to see if there is any indication of NC/NO for the valve on the pressure difference measurement pipeline
Take a look at how the pressure difference lines are distributed; generally, they are all enabled and no separate action is required
Oh, so all the pressure difference lines, including those for purge hydrogen, are turned on, right?