Method of passive acoustic technique to check the level of a fluidised bed.

摘要

DESCRIBES A METHOD FOR DETERMINING nonintrusive LEVEL OF BEDDING IN fluidised bed reactor TWO PHASES, USING VIBRATIONS OF WALL REACTOR, INVOLVING: MEASURING VIBRATIONS OF WALL STRUCTURE OF REACTOR IN DIFFERENT vertically spaced POSITIONS, ALONG the wall thereof, and the determination of the energy spectrum as a function of frequency. THE AREA OF LOW ENERGY SPECTRUM a resonance peak, IS DETERMINED IN EACH POSITION, AND A CHANGE IN THE AREA OF ENERGY SPECTRUM IN THE SENSE VERTICAL correlates with the bed level.