Think of it like a NASCAR race. All cars have 4 tires, an engine, seat belts, a driver and a pit crew. Do they all come into pit lane exactly at the same time to change tires, and fill up with the same amount of fuel? No.
You need to figure out what works best for your coker. I believe there is a greater risk of plugging during the coke drum switch (thats why you start injecting steam before the switch).
Your coker should have quench water flow meter(s). I would try lowering that 5000#/hr when starting the water flow, keeping an eye on the water flow meter, so that there is always water going into the drum.
Anybody in this forum wants to help tim by sharing their ideas/experience?
Regards
CG
