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This paper describes the main steam temperature deviation and its reduction by changing the injection angles of over-fire air in a 800MW, tangentially coal-fired, two pass boiler. The CFD simulation showed that the simulated gas temperatures and velocities in the furnace are well matched with the steam temperatures along the steam pathways and the tube metal temperatures of the heaters. The changes...
This paper describes the numerical and experimental investigations of the gas temperature deviation in the crossover pass of a large scale, advanced low NOx, tangentially fired pulverized coal boiler. Major attention was paid to the region of the final super-heater where the tube ruptures occasionally had been occurred due to the tube overheating. Computational Fluid Dynamics (CFD) simulation and...
Fireside waterwall wastage in a pulverized coal-fired boiler was investigated and the relevant rate correlations were developed for three corrosion mechanisms: gas-phase attack by reduced sulfur species, chlorine-based attack, and unoxidized fuel deposition. Rate correlations were based on the published data and the experiments at a pilot-scale test furnace. The parameters of the correlations include...
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