ABSTRACT
If waste reduction is not possible, either by process or material change, waste particulate material must be removed from the process air stream. Factors such as the physical form of the particulates, particle size and size distribution, density and porosity of the particulates, and particle shape affect particle behavior. Selecting the type of control equipment depends largely on the characteristics of the particulate material to be removed. Control equipment can be divided into three broad classes: gravitational and inertial collectors, electrostatic precipitators (ESPs), and filters. ESPs include both single and two-stage units. Although particulate material varies in both size and composition, certain particle types are usually associated with a range of particle sizes. Generally, particle size is the most important factor in the selection of a collector since the range of particle sizes to be collected strongly affects the expected cost and efficiency.
