DEVICE AND METHOD FOR CLEANING SELECTIVE CATALYTIC REDUCTIONPROTECTIVE DEVICES

摘要

One embodiment described herein relates to a system for removing pollutan ts from a flue gas. The system includes a selective catalytic reduction (SCR ) system having a SCR reactor (22) containing a NOx reducing catalyst and on e or more SCR protective devices (20). At least one of the SCR protective de vices (20) is connected to a rapping hammer system (24) that actively remove fly ash collected on the SCR protective devices (20).