Abstract: An apparatus for removing particulate matter from a gas stream includes a sorbent injector, a charging antenna, and a plurality of granular media filter cells. The gas stream containing the particulate matter is directed through an inlet plenum. The sorbent injector, located within the inlet plenum, injects fine particles of a sorbent material toward the charging antenna for electrostatically charging the sorbent particles. The charged sorbent particles form a large charged surface area for inducing charges on the particulate matter entrained by the gas stream. The plurality of filter cells each include inner and outer perforated, concentric cylinders, and granular media is caused to move downward between the inner and outer cylinders of each filter cell.

Abstract: A method for removing particulate matter from a gas stream by injecting charged particles into the gas stream to form a large charged surface area to induce charges on the entrained particulate matter. The injected material may be an adsorbent or an absorbent and may be reactive with the gases in the gas stream. The charged particles contained in the gas stream together with the injected particles are passed through a porous moving bed of media such as silica rock; as a result of the electrical charge as well as inertial impact forces on the respective particles, the particles become attached to the media which is continuously changed after it has captured the fine particulate matter. The media, together with attached sorbent additive and particulate matter, may then be incorporated into a product the manufacture of which generated the particulate matter.