PARTICLE LOADING IN TWO-PHASE FLOW

THE ACOUSTICAL RESONANCE MEASUREMENT FOR DETERMINING THE PARTICLE MASS LOADING IN FLUIDIZING GAS HAS BEEN SHOWN TO BE POSSIBLE FOR PULVERIZED COAL FLUIDIZED BY AIR IN POWER PLANT COAL PIPING, BUT THE DATA CANNOT BE INTERPRETED BY EMPIRICAL OR LINEAR ACOUSTICAL ANALYSIS. AN EVALUATION, WITH NONLINEAR ACOUSTICAL ANALYSIS, OF THIS NEW, NONINTRUSIVE, TECHNIQUE FOR ACCURACY AND LIMITATIONS IS PROPOSED IN ORDER TO PROVE THE FEASIBILITY OF THE ACOUSTICAL RESONANCE MEASUREMENT. EVALUATIONS OF THE EFFECTS OF VARIATIONS IN DISTRIBUTION OF COAL IN THE CROSS-SECTION, DISTRIBUTION OF PARTICLE SIZES, VELOCITY PROFILE, AND VARIATION OF COAL TYPE ARE PROPOSED. THESE ANALYSES WILL DETERMINE THE CONDITIONS UNDER WHICH THIS NEW TECHNIQUE WILL PROVIDE A SUITABLE DETERMINATION OF THE PARTICULATE MASS LOADING UNDER CONDITIONS OF PULVERIZED COAL-FIRED POWER PLANTS. THE ACOUSTICAL RESONANCE MEASUREMENT CAN PROVIDE A NONINTRUSIVE AND REAL-TIME MEASUREMENT OF THE MASS LOADING OF PARTICLES FLUIDIZED BY A GAS PHASE. THIS TECHNIQUE CAN PROVIDE FUEL SIGNALS FOR PULVERIZED COAL-FIRED POWER PLANTS FOR BOILER MONITORING AND CONTROL AND MEASUREMENTS IN THE HOT, DIRTY, AND CHEMICALLY REACTING ENVIRONMENT IN COAL GASIFIERS.