What does the ramp curve of the lockhopper compensation valve in the CRCS system of the CCR process mean?
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After changes are made to the important operating parameters of the reforming reaction system, the ramp curve of the lock hopper compensation valve should be adjusted according to the operating conditions. The ramp curve of the lock hopper compensation valve referred to here is presumably part of the catalyst regeneration control system. I would like to know what exactly this ramp curve means Do you mean the time it takes for the valve to reach a certain position? Are there 2D curves?
In my opinion, it is mainly used to stabilize the pressure difference in the buffer zone, allowing the catalyst to fall smoothly and thus stabilizing the pressure in the regenerator; since the pressure in the regenerator controls the pressure of the series reactor, the operation of the closed hopper can introduce pressure fluctuations into the regenerator.
The ramp curve of the compensation valve is primarily determined by the operation of the upper and lower balance valves; it is mentioned in the book \"Catalytic Reforming Processes and Engineering\", which I have seen. And there are adaptive programs
The ramp curve of the compensation valve is that of the compensation balance valve; in other words, it adjusts according to the opening and closing of the compensation balance valve in order to avoid dead zones in the balance valve
Start mode, ramp mode, adaptive mode