For hydrogen production using dry gas, how should one handle the activation of the large steam drum safety valve?
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No matter how I think about it, I can’t come up with a perfect solution
Let’s analyze the reasons why the drum safety valve operates, and then find a solution
The activation of a safety valve strictly speaking constitutes an overpressure incident； The start-up pressure relief safety valve returns to its normal position; the inlet and outlet valves of the start-up safety valve are closed, and the backup safety valve is put into use ； Remove the safety valve used for launching; after it has passed the inspection, install a backup one. The petrochemical industry must strictly control the operating pressure of towers and vessels, and be aware of the design pressure and temperature for all pressure vessels. . Prevent overpressure and overheating from occurring.
If it is not possible to return to the seat, the feed to the converter must be cut off, as well as the steam supply from the drum to the converter; steam must then be supplied from the external pipeline network. If it can return to its original position, once it is back in place, switch it to the standby safety valve