What is the typical valve pressure drop?
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For coaxial single-segment regeneration, the valve pressure drop remains at 0 all the time; occasionally it shows a value of 0.0x. Is this true or false? What is the valve pressure drop for everyone?
There is no fixed value for the pressure drop across the plug valve; it generally depends on the catalyst circulation rate, the inventory in the stripping section, and the opening degree of the plug valve. Here it’s around 45-55
If it’s always 0, there must be a problem, right?
Catalyst backflow is a serious accident; the operational measure to prevent it is to implement differential pressure protection, with the protection value set at a differential pressure of 5 or 3 kPa for the slide valve.
This post was last edited by 9.8℃ on 2018-4-9 at 21:46. The value has always been zero; it’s likely due to thermal expansion of the startup riser, or misalignment of the valve head of the startup plug valve, which results in a large gap between the plug valve and the riser
This situation can result in the valve not being able to close properly, but it seems to have little to do with pressure drop
First, the issue of apparent illusions must be ruled out
What is the reserve in your stripping section, and can it be controlled?
It’s easy to control. I’m just asking what the normal valve pressure drop is for everyone; it’s not meant as a reference