Premium
Boundary Layer Control in Pipes through Strong Injection
Author(s) -
Yeung W. C.C.,
Holt M.
Publication year - 1982
Publication title -
zamm ‐ journal of applied mathematics and mechanics / zeitschrift für angewandte mathematik und mechanik
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.449
H-Index - 51
eISSN - 1521-4001
pISSN - 0044-2267
DOI - 10.1002/zamm.19820620806
Subject(s) - corrosion , boundary layer , diffusion , materials science , layer (electronics) , hydrogen sulfide , turbulence , coal , hydrogen , sulfidation , mechanics , boundary (topology) , metallurgy , petroleum engineering , waste management , composite material , engineering , thermodynamics , chemistry , sulfur , mathematical analysis , physics , mathematics , organic chemistry
Abstract In 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 H 2 S along the pipe wall is calculated and is found low enough to prevent corrosion.