Hydrorefining
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If the feed pump stops operating and cannot be restarted for an extended period, why is it necessary to fully open the hydrogen main line? What will happen if this step is not taken?
What line to use? It is necessary to be precise when specifying whether the main hydrogen line carries fresh hydrogen or recycled hydrogen. I think the feed pump has stopped, and it’s likely that the plant interlocks have also activated. At this time, the new hydrogen generator is shut down. The hydrogen circulation machine should be kept running to remove the heat of reaction. Pressure relief at 0.7 bar or 2.1 bar. If the interlock fails and pressure is released at 2.1 bar everywhere, it won’t be possible to bring it to a stop.
The description is unclear. Also, for future posts, include the specific question you’re asking about; always writing about hydrorefining makes it seem like a repeated posting. It is prone to being accidentally deleted.
It definitely refers to the cold bypass with a high conversion ratio of reaction products to raw materials; P
If the bed temperature rise can be controlled, the reaction system can achieve maximum cyclic cooling； If the bed temperature exceeds the limit, the system requires emergency pressure relief.
Agree with the fourth floor – that pipeline for mixing hydrogen in front of the furnace
The inlet flow rate to the hydrogen circulator is too low; the compressor is experiencing surge