Abstract
AbstractIn coal gasification, oxidation and sulfidization cause serious pipe corrosion. This paper attempts to determine the feasibility of reducing such corrosion by injecting steam at pipe entry to modify the boundary‐layer gas composition along pipe walls. The injection will form a thin layer on the inner wall, preventing, for a time, contact with the corrosive gases. (Turbulence will eventually force diffusion through the protective layer.) The gas products are assumed to be hydrogen sulfide and steam. The Method of Integral Relations is used to obtain the numerical solutions to the governing equations. With several different injectant lengths and velocities, the concentration of H2S along the pipe wall is calculated and is found low enough to prevent corrosion.
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