What is manual operation of the catalytic cracking slide valve?
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Instrument failures of the catalytic cracking slide valves – for example, alarms due to failures in the regeneration slide valve or the regenerator-ready slide valve. How to operate the slide valves in manual mode, under what circumstances manual operation can be used, and the steps for performing manual operation. I would appreciate the guidance from all the teachers! ! Thank you! ! ! !
Function of the manual operation: When there is a fault with the slide valve and it cannot be controlled from inside, and it is necessary to adjust it to the appropriate valve position immediately, the valve position signal is sent to the desired position. By pressing the manual operation button, the pressure from the backup accumulator of the slide valve is used to push the valve plate to the position you want.
When the slide valve fails and cannot be adjusted automatically or manually, it can be set to the jog position; using the accumulator as a power source, remote control operation can still be achieved from the control room to keep the device functioning.
It is driven by a pressure reservoir, but cannot be used multiple times in a row
It’s best to stop and get it repaired; this isn’t a sustainable solution