CRACKING CATALYSTS, ADDITIVES, METHODS OF MAKING THEM AND USING THEM

摘要

Collection enhanced materials, flue gas additives, and methods of making the enhanced materials and flue gas additives are provided. In one embodiment, a down stream addition system configured to control material passing through a metering device from a vessel to a gaseous exhaust path extending between a unit and an exhaust flue of the unit is provided. In alternative embodiments, methods are provided for introducing at least one of a flue gas additive and a collection enhanced material to a gaseous exhaust stream exiting a unit; exposing and removing at least a portion of at least one a of flue gas additive and a collection enhanced material from a gaseous exhaust stream exiting a unit prior to entering an exhaust flue; and recycling at least a portion of material removed a from a gaseous exhaust stream exiting a unit back to the gaseous exhaust stream without passing through the unit.