What does “skimming” refer to in oil refining processes?
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Does it mean sending defective products through the defective product line to the recycling tank? Does it still refer to replacing the top layer of catalyst in the reactor? Please advise, experts
I’ve never heard of it; I’ve been working in vacuum distillation for four years now!
This term is commonly used in hydrogenation units; \"changing the catalyst\" refers to the situation where there is a high pressure difference across the catalyst bed in the reactor, and in such cases the catalyst on the upper layer is replaced with new catalyst, or the old catalyst is regenerated before being put back in use.
http://bbs.hcbbs.com/viewthread.php?tid=173597. For beginners, I suggest that you first search on the forum for “turning the head””
Hehe, sorry, it seems I need to learn how to make good use of the search function first:lol
Simply put, it refers to a high differential pressure in the bed layer inside the reactor, necessitating the replacement of the catalyst at the top.
It mainly involves the reforming pre-hydrogenation reactor, or the accumulation of scale at the top of the hydrogenation reactor; the caked catalyst, protectants, ceramic balls, etc. are removed and replaced to reduce the pressure drop in the bed layer, and it is unrelated to catalytic and atmospheric/ vacuum distillation units.
In disaster hydrogenation, the process of replacing the catalyst in the upper part of the reactor is referred to as “skimming the catalyst”
It mainly involves replacing the catalyst in the upper section when the pressure drop in the pre-hydrogenation reactor for catalytic reforming is high
Replace the top layer of catalyst in the reactor? ! {%
Skimming involves removing the top layer that is heavily fouled with the catalyst contained within it, and then adding a new layer; this reduces the pressure drop in the reactor, which facilitates operation