Filtration à haute température avec des chandelles céramiques

Abstract

Laboratory and numerical analyses were performed at high temperature on the Pall Gas Solid Separation System Vitropore[superscript TM 1] candle filtration unit. The goal of this work was to determine if particle deposition patterns exist, to find optimum operating conditions, and to develop a validated numerical model. Fly ash from the Québec municipal incinerator was introduced into a high velocity air stream and fed at 900[degrees Celcius] to our industry standard one-meter long cluster of three ceramic candle filters. Optimum operating conditions for filter cake uniformity were determined using statistical methods. Of the conditions tested, low ash feed rate (0.83 g/s), low air flow rate (4.72×10[superscript -3] m[superscript 3]/s), and off axis filter position (PIN) gave the most uniform filter cakes. Numerical model results compared well with actual laboratory temperature, pressure and particle deposition data."--Résumé abrégé par UMI