What is the difference between valve B and valve V in the reforming catalyst regeneration system? Where is it installed?
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As the title suggests, I’m a beginner seeking some basic information; also, what is a G-valve used for?
For such issues, it is best to use a simple flowchart to explain them, as this makes discussion easier.
To simplify the process, I named them based on the materials and functions
Valve V prevents the flow of catalyst, while valve B prevents the flow of both catalyst and gas. These two valves are used together in the catalyst pipeline, with valve V located at the top and valve B at the bottom; when shutting something off, valve V should be closed first, followed by valve B
One is obsolete but still functions as a catalyst, while the other is still a catalyst but has become obsolete. In the UOP process, there are two such sets: one is located below reactor 4, and the other is located below the nitrogen seal tank (above the closed hopper)