Ethylene Header has a main pressure controller which keep the pressure in 40.5 Kg/cm2 , but one of our consumers is a LDPE plant which in start up steps causes pressure drop in header because of hyper compressor.
I would like to implement a ramp detection in order to detect o anticipate to this pressure drop. Does anyone implement something like this? Best Regards!
Simple question: what is your pressure controller doing? Admitting more/less ethylene into the header? A simple tuning or maybe adaptive tuning wouldn't be enough? Did you consider a FF strategy?