Acoustic monitoring of two-phase feed nozzles.

摘要

An acoustic method is disclosed for monitoring and controlling the mixing or flow state condition of two-phase fluids through feed nozzles (4) and thereby improving operating stability and high product value yields in major refinery processes or any other process where a finely atomized liquid stream exiting the nozzle is important. In this method, the signature of a current power spectrum (CPS) from a vibrational sensor (5:8) acoustically coupled to the fluid in the nozzle (4) under unknown nozzle operating conditions are compared with the corresponding signature under known operating conditions. A difference indicating a departure from the known nozzle operating conditions is used to control the operating conditions to return the nozzle performance to normal.