COMBUSTING COAL PARTICLE TEMPERATURES BY FT-IR SPECTROSCOPY

THIS PROJECT IS TO DEVELOP AN IMPROVED NON-INTRUSIVE METHOD OF TEMPERATURE DETERMINATION FOR PULVERIZED COAL COMBUSTION BASED ON FT-IR SPECTROSCOPIC MEASUREMENT OF ITS EMISSIONS. IN PHASE I SPECTRAL MEASUREMENTS WILL BE MADE OF THE RADIATION FROM COMBUSTING COAL PARTICLES IN A LABORATORY FURNACE. TEMPERATURE DETERMINATION WILL BE ACCOMPLISHED USING VISUAL AND ANALYTIC COMPARISON TECHNIQUES, THE LATTER BEING SUITABLE FOR AUTOMATION. IT IS ANTICIPATED THAT PARTICLE TEMPERATURES WILL BE DETERMINED WITH AN ACCURACY OF BETTER THAN + OR - 25 DEGREES CENTIGRADE. THE POSSIBLITYOF INCLUDING A CORRECTION TERM FOR PARTICLE EMISSIVITIES IS A PART OF THE MODEL, THUS DISTINGUISHING THE PROPOSED METHODFROM EXISTING ONES. KNOWLEDGE OF PARTICLE TEMPERATURES IN RESEARCH IS ESSENTIAL FOR THE QUANTITATIVE UNDERSTANDING OF REACTIONS. IN COMMERCIAL OPERATIONS TEMPERATURE IS A DIAGNOSTIC WHICH IS OFTEN A NECESSARY PRECURSOR TO THE CONTROL OF PROCESS PARAMETERS.