Catalytic reforming hot shutdown
Thread Content
There is one case where the pressure in the liquid separation tank at the inlet of the circulating nitrogen compressor is extremely high, resulting in a thermal shutdown. Why?
OP, it should be recycled hydrogen rather than recycled nitrogen. Generally, there is a high liquid level interlock to shut down the system and prevent oil from entering the compressor; I’ve never encountered a high pressure interlock.
It’s about the circulating nitrogen; it is said that high pressure makes catalyst circulation difficult, and it’s hard to lift it to the upper hopper
A high inlet pressure indicates a high pressure in the separation hopper; high pressure in the separation hopper can cause problems with the level of material in the blocking hopper, leading to a high-high interlock.
Same question; I still haven’t figured this out either. . . Visually, there are two effects: one is the high pressure in the separation hopper, which affects the lifting of the four reverse mechanisms, and the other is the impact on the pressure balance in the locking hopper. But it doesn’t seem to pose any fundamental risks; unlike other shutdown conditions, there is no risk of hydrogen and nitrogen mixing with each other or of equipment damage due to overheating.
He was referring to the regenerative cycle air compressor