THE IMPACT OF UTILIZING THE LEADING EDGE SOOTBLOWER NOZZLE ON RECOVERY BOILER SUPERHEATER PLATENS, 20PEERS Conference
Fireside deposit accumulation on the leading edge of recovery boiler superheater platens can be difficult to control with conventional sootblowers. Uncontrolled accumulation of this leading edge deposit may bridge the space between adjacent superheater platens, causing plugging in the superheater section and costly unscheduled shutdown. It is easier to remove this type of deposit by means of debonding using an angled sootblower nozzle (i.e., leading edge nozzle). However, a leading edge nozzle may exert excessive force and cause a premature failure to the superheater platens if the sootblowing pressure is not properly set. This paper discusses the deposit removal mechanism by the leading edge nozzle, Computational Fluid Dynamics (CFD) analysis of the jet force exerted on the superheater platens, the jet impact on the platens, and the operational guideline that a recovery boiler operator may use to operate the leading edge nozzles.
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