Development Program for an Ionizer-Precipitator Fine Particle Dust Collection System as Applied to Coal-Fired Utility Steam Generators. Volume I.

摘要

The work was directed at developing more effective electrostatic precipitation of fine particulate,particularly of high resistivity fly ash,by imposing a high degree of charge on the particles. A unique electrode assembly results in an intensely ionized flue gas which leads to a particle charge as high as four times greater than is currently being achieved. Such an ionizer would be the first or charging stage of an improved 2-stage power station electrostatic precipitator immunized against high resistivity dust. Generally,laboratory analyses and testing have provided the data necessary to proceed with the design of a larger scale field pilot. Economic evaluations of the concept based on laboratory data are included. The evaluations indicate potential cost savings on new systems and retrofit upgrades. Possible mechanical arrangements for incorporating the high intensity ionizer into conventional design precipitators are indicated for both new and retrofit installations.