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Formation of Black Powder Components by Dewing and Hygroscopic Corrosion Processes

Colahan, Martin L.
http://orcid.org/0000-0003-3007-9234
http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1483552728314766

Abstract Details

2017, Master of Science (MS), Ohio University, Chemical Engineering (Engineering and Technology).
The presence of black powder in natural gas pipelines can lead to equipment erosion, valve failure, instrumentation malfunction, and increased pressure drop. However, despite its impact on downstream and midstream operations, black powder production is poorly understood. In the present work, black powder formation as a result of corrosion was investigated by simulating sales gas conditions in a glass cell. Steel specimens were systematically exposed to a range of CO2, H2S, and O2 partial pressures at differing water condensation rates. The potential for hygroscopic material assisting black powder formation was also investigated. Friable corrosion products found in dewing conditions consisted of siderite, mackinawite, and hematite. Buckle-driven delamination was identified as a leading cause of black powder production from FeS. The presence of hygroscopic NaCl crystals facilitated corrosion at relative humidities as low as 33%, but flakey corrosion products were only found if deliquescence occurred.
David Young (Advisor)
Marc Singer (Committee Member)
Srdjan Nesic (Committee Member)
Rebecca Barlag (Committee Member)
146 p.
Chemical Engineering
Black Powder; Corrosion; Natural Gas; Dewing Corrosion; Hygroscopic Corrosion

Recommended Citations

Citations

  • Colahan, M. L. (2017). Formation of Black Powder Components by Dewing and Hygroscopic Corrosion Processes [Master's thesis, Ohio University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1483552728314766

    APA Style (7th edition)

  • Colahan, Martin. Formation of Black Powder Components by Dewing and Hygroscopic Corrosion Processes. 2017. Ohio University, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1483552728314766.

    MLA Style (8th edition)

  • Colahan, Martin. "Formation of Black Powder Components by Dewing and Hygroscopic Corrosion Processes." Master's thesis, Ohio University, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1483552728314766

    Chicago Manual of Style (17th edition)

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This open access ETD is published by Ohio University and OhioLINK.