Boundary Layer Control in Pipes through Strong Injection

Journal Article · Fri Jan 01 00:00:00 EST 1982 · Zeitschrift fuer Angewandte Mathematik und Mechanik

DOI:https://doi.org/10.1002/zamm.19820620806· OSTI ID:1134731

Yeung, William Chor-Chun ^[1]; Holt, Maurice ^[1]

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1. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)

In coal gasification, oxidation and sulfidization cause serious pipe corrosion. This study 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. Finally, 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.

• Research Organization: Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
• Sponsoring Organization: USDOE Office of Science (SC), Basic Energy Sciences (BES)
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 1134731
• Report Number(s): LBL-12018
• Journal Information: Zeitschrift fuer Angewandte Mathematik und Mechanik, Vol. 62, Issue 8; ISSN 0044-2267
• Publisher: Wiley
• Country of Publication: United States
• Language: English

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