An on-stream method for detecting erosion or plugging for manifolded feed nozzle systems

摘要

In an on-line method for detecting erosion or plugging for manifolded feed nozzle systems which carry two-phase liquid/gas flow by measuring a liquid flow parameter related to liquid flow on the basis of a polynomial function relating the measured flow parameter to the actual flow, changes in the polynomial coefficients with time are detected, so as to indicate erosion or plugging. The method can determine whether the erosion is at the liquid nozzle or the gas restriction orifice. The amount of erosion or plugging can be quantified.