Patent ID: 9327232
Filing Date: 2016-05-03
CPC Classification: B01D,F23J

Claim Text:
1. A circulating dry scrubber system for removal of pollutants from a gas, the circulating dry scrubber system comprising: a circulating dry scrubber reactor containing a fluidized bed adapted to contact the gas with a dry reagent within the fluidized bed, the dry reagent being effective to remove pollutants from the gas and thereby yield a scrubbed gas stream containing particulates comprising the dry reagent; a housing fluidically coupled to an outlet of the circulating dry scrubber reactor and adapted to receive the scrubbed gas stream flowing upward from the circulating dry scrubber reactor; a filter array within the housing and adapted to remove the particulates from the scrubbed gas stream; and an internal hopper within the housing and adapted to receive the particulates from the scrubbed gas stream and return at least some of the particulates to the fluidized bed within the circulating dry scrubber reactor; wherein the scrubbed gas stream exiting the fluidized bed flows upward between an interior of the housing and an exterior of the internal hopper before contacting the filter array, and the exterior of the internal hopper is exposed to the scrubbed gas stream.