SOLIDS TRANSPORT IN FLUE GAS DESULFURIZATION SYSTEM

摘要

A circulating dry scrubber flue gas desulfurization system is disclosed. Hydrated lime is injected into the flue gas upstream of the CDS vessel. The flue gas then passes through a particle collection device, where solids are captured. At least a portion of the solids are recycled from the particle collection device to a splitter, where the solids are divided between the injection points. No distribution box is needed, which permits lowering the height and/or restructuring the location of many components of the system, reducing costs. An improved solids transport system is also disclosed. Flue gas can be recycled from downstream and used as a fluidizing gas for transporting solids between different locations. Exemplary systems include fluidized slide gravity conveyors, fluidization pads in bins, and in hoppers. The flue gas is generally already at an elevated temperature, reducing power consumption needed to heat the fluidizing gas.