Particulate collection in a high temperature cyclone

Abstract

A new particle collection technique is analyzed and presented for its potential application in a high temperature, high pressure gas cleaning system. The technique is based on the collision and the aglomeration phenomena among the coal-ash particles when the cyclone is operated near the coal-ash fusion temperature. The percent increase of agglomeration rate is estimated by mathematical modeling for particles smaller than five microns in diameter. Particulate collection efficiency with or without agglomeration is presented. Experimental results in a high temperature cyclone are presented. The output dust loading varied from 0.025 to 5 grains per cubic foot (0.057–11 g/m 3) as the input dust loading is increased from 4 to 35 grains per cubic foot (9.2–80g/m 3) of gas flow.