Reasons for the evacuation of the reforming pre-hydrogenation feed pump
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Today, in the Q&A section on *reformation technology, one of the reasons listed for the vacuum condition in the pre-hydrogenation feed pump was a low liquid level in the pre-distillation tower. Could any teacher please analyze this? Thank you
It’s because the liquid level at the bottom of the pre-fractionation tower is low. I’ve just started learning about reforming and don’t understand this well; I’d appreciate some guidance
Friend, I’m not quite familiar with the situation regarding your pre-distillation tower – does it come before or after pre-hydrogenation? Generally, the feedstock for pre-hydrogenation goes straight into the pre-hydrogenation reactor after heat exchange; the distillation towers are all used after pre-hydrogenation, so it shouldn’t affect the feedstock for pre-hydrogenation. Pre-hydrogenation feed generally has a feed buffer tank, and the liquid level in that tank affects things. What kind of technique is that in your place?
We use pre-hydrogenation, stripping, and distillation; does the book mean the pre-distillation tower mentioned earlier (that is, before pre-hydrogenation)?
The process is different; it is necessary to take into account the actual process of one’s own equipment.
It is possible that in some pre-hydrogenation processes, a so-called deoxygenation tower is first used – which essentially serves to remove light components; it can be considered a type of distillation tower. If the liquid level in that tower is too low, it will definitely cause the feed pump to experience vacuum conditions
No way, our process involves deoxygenation first and then feeding in material. Moreover, there’s a buffer tank for the feed material – how could low liquid level cause evacuation? ? I personally think it’s probably due to insufficient back pressure