초록

Passive coustic method for monitoring and controlling flow state of two phase fluids through feed nozzles 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.

대표청구항 ▼

A passive acoustic nozzle monitoring process for correcting the operating conditions of a feed nozzle injecting a liquid gas mixture into a process vessel or chamber so as to maintain the correct mixing of said liquid and gas exiting the nozzle comprising: (a) determining an initial time variation o

A passive acoustic nozzle monitoring process for correcting the operating conditions of a feed nozzle injecting a liquid gas mixture into a process vessel or chamber so as to maintain the correct mixing of said liquid and gas exiting the nozzle comprising: (a) determining an initial time variation of the vibrational signal over an initial time period from a vibrational sensor in close proximity to said nozzle when said nozzle is performing at a standard mixing or flow condition which is the desired operating state of the nozzle; (b) determining a time variation of the vibrational signal over a later time period from said vibrational sensor in close proximity to said nozzle; (c) comparing said initial time variation of said vibrational signal with said time variation of said vibrational signal taken at a later time, so as to determine a change in said vibrational signal; and (d) correcting the flow state of the nozzle by changing the variables controlling the relative volumes of gas and liquid entering the nozzle so as to return said nozzle to said desired operating state.