Abstract: A method and apparatus to reduce emissions by gas membrane separation and liquid carrier chemical absorption. The membrane separation system consists of an absorption system containing ceramic membranes through which is circulated an absorbent carrier. Exhaust gases contact the exterior surface of the membranes and the target gasses permeate the membrane wall and are absorbed by the carrier(s) within the bore and thereby are removed from the exhaust stream. Various exemplary embodiments are described for systems to regenerate the carrier, and systems designed to remove SO2 from the exhaust. One option uses an electrostatic charger to place a charge on the gas particles, while another uses a corona generator. In this aspect, the invention is also an improved electrostatic and corona separator, that uses a carrier liquid separated from the gas stream by a membrane to bear away undesirable particles instead of a deposit or collection plate or collection bag or similar device.

Abstract: Various exemplary embodiments relate to a method and apparatus to reduce emissions of target emission gasses such as sulfur oxides, nitrogen oxides, and carbon oxides from combustion exhaust such as marine engine exhaust by gas membrane separation and liquid carrier chemical absorption. The membrane separation system consists of an absorption system containing semi-permeable hollow fiber membranes through which is circulated a liquid absorbent. Exhaust gases contact the exterior surface of the membranes and the target gasses selectively permeate the membrane wall and are absorbed by the liquid carrier(s) within the bore and thereby are removed from the exhaust stream.

Abstract: A dust control apparatus and method for a bulk material handling transfer system having a chute comprising a pathway there through for handling varying volumes of bulk material flowing through the chute using gravity flow. A self-adjusting air restrictor gate is mounted in the chute for engaging the upper surface of flowing bulk material through the chute for restricting the air pathway during material volume flow variations to reduce dust emissions. The gate member contacts the upper surface of flowing bulk material and moves up and down in response to the flow of bulk material through the chute to restrict the flow of air to reduce dust. A counterweight mechanism and a damper helps maintain controlled contact of the air restrictor gate with the upper surface of bulk material flowing through the chute.

Abstract: A dust control apparatus and method for a bulk material handling transfer system having a chute comprising a pathway there through for handling varying volumes of bulk material flowing through the chute using gravity flow. A self-adjusting air restrictor gate is mounted in the chute for engaging the upper surface of flowing bulk material through the chute for restricting the air pathway during material volume flow variations to reduce dust emissions. The gate member contacts the upper surface of flowing bulk material and moves up and down in response to the flow of bulk material through the chute to restrict the flow of air to reduce dust. A counterweight mechanism and a damper helps maintain controlled contact of the air restrictor gate with the upper surface of bulk material flowing through the chute.

Abstract: This invention relates to shaped apertures in an ion implanter that may act to clip an ion beam and so adversely affect uniformity of an implant. In particular, the present invention finds application in ion implanters that employ scanning of a substrate to be implanted relative to the ion beam such that the ion beam traces a raster pattern over the substrate. An ion implanter is provided comprising: a substrate scanner arranged to scan a substrate repeatedly through an ion beam in a scanning direction substantially transverse to the ion beam path, thereby forming a series of scan lines across the substrate; and an aperture plate having provided therein an aperture positioned on the ion beam path upstream of the substrate scanner, and wherein the aperture is defined in part by an inwardly-facing projection.