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- W2183659306 abstract "IRESIDE DEPOSIT ACCUMULATIOn on heat transfer tubes in recovery boilers is controlled with sootblowers that blast the deposits with high pressure, superheated steam jets. Sootblowers consume a large amount of steam (3 to 12% of the total steam produced by the boiler), and thus, need to be operated as efficiently as possible. The efficiency of a sootblower in removing deposits is directly related to the peak impact pressure (PIP) of the jet, i.e. the stagnation pressure measured along the nozzle centreline downstream of the nozzle. The PIP, at a fixed distance from the nozzle exit, increases with an increase in nozzle size, sootblowing steam flow rate and pressure, but decreases rapidly in the axial direction of the jet due to the turbulent entrainment of surrounding gases [1,2]. As a sootblower jet sweeps through superheater platens, its flow characteristics may be altered by obstacles in the jet path. The obstacles may be in the form of uneven platen surfaces, tube misalignments, or deposits of various sizes and shapes. Presently, it is not well understood how obstacles may affect the PIP, and hence, the deposit removal efficiency of the sootblower at locations downstream. A numerical model has been developed by Tandra [3,4] to compute the fluid dynamics of a turbulent, supersonic jet and its interaction with flat plates. The model has been used, together with laboratory experimental measurements, to examine the flow characteristics of a sootblower jet propagating between superheater platens. This paper discusses the essence of the model, and the main results obtained from simulations using the model, and from laboratory experiments." @default.
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- W2183659306 date "2007-01-01" @default.
- W2183659306 modified "2023-09-27" @default.
- W2183659306 title "Interaction between sootblower jet and superheater platens in recovery boilers" @default.
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