Process control as inventory control: This concept eases troubleshooting, CV-MV pairing, developing models and more

摘要

Process control is control of the rates that inventory changes to manage the rates that P, T, V, h, W and X change. OFTEN, chemical process control is fundamentally inventory control. Understanding the cause-and-effect of the inventory is key to understanding the process, troubleshooting, choosing appropriate controlled variable-measured variable (CV-MV) pairing, designing cascade or ratio structures, specifying safety overrides and developing models (either first-principles or empirical).