Patent ID: 8297541
Filing Date: 2012-10-30
Classification: B01D

Abstract:
1. An apparatus for reducing dust emissions from particulate commodities during discharge from an outlet, comprising: a curved duct having an upward facing inlet and terminating in the outlet, wherein the outlet has an inclined, downwardly-facing orientation, and wherein the curved duct is enclosed from the inlet to the outlet; a continuously converging duct comprising an inner wall and a protrusion extending from the inner wall, the protrusion arranged to cause the continuously converging duct to deliver the particulate commodities into the curved duct at a location adjacent a curved outer wall of the curved duct and away from a curved inner wall of the curved duct; and a delivery source arranged to deliver particulate commodities under gravity to the inlet at least at a predetermined delivery velocity of at least 5 meters per second without additional driving force through the duct, thereby causing dust to arise from the particulate commodities, wherein the curvature of the curved duct is arranged to cause said dust to be re-entrained within the commodities as the commodities are diverted from a straight path by the curvature of the duct.