How to deal with leaks in hydrogen-related high-temperature areas?
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The large flanges of continuous reforming or regeneration reforming reactors, the large flanges of heat feed heat exchangers, and the blind covers of heater manifolds are all hydrogen-containing high-temperature components that have experienced multiple leaks during operation. Sealing welding has been applied, but a risk of leakage still exists. Do you have any good approaches to dealing with this?
Is the flange surface uneven? How to handle it? Stay tuned
When increasing the volume and temperature, it is important to pay attention to this; regular inspections, dark-light inspections of the hydrogen-related systems, and video monitoring should be strengthened. Steam fire suppression rings must be installed on components such as the large flanges of the reforming reactor and those of the hot feed heat exchanger. If the device cannot be shut down to fix the issue, special care is the only option. But is there a risk of leakage? Then we have no choice but to keep the fire truck on standby at the scene
This issue has been discussed several times: (1) Check whether there are defects, such as uneven flange surfaces; (2) Disc springs can be used; (3) Even if the flange surface is completely smooth, threads are still necessary; (4) Protect the area around the flange with a steam ring; (5) Increase inspections, including checks in the dark at night. The first three solutions require shutting down operations to be implemented, and relevant partner units can be consulted for further information.
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