Metallographic examination of surveillance coupons from the Wilsonville, Alabama, Solvent Refined Coal Pilot Plant, 1977-1978

Technical Report · Tue Jul 01 00:00:00 EDT 1980

DOI:https://doi.org/10.2172/5270610· OSTI ID:5270610

Baylor, V. B.; King, R. T.; Leslie, B. C.; Crouse, R. S.; Patko, A. J.; Taber, K. C.

Commercialization of the solvent refined coal (SRC) process requires corrosion-resistant yet economical materials of construction. A corrosion surveillance program was initiated at the Wilsonville, Alabama, SRC pilot plant to expose racks of welded specimens of engineering alloys to the various process conditions in major plant vessels. To observe the long-term cumulative exposure effects, sections were taken from the specimens after six months. The coupons were replaced in the vessels for another year and then reexamined. These sections were evaluated at ORNL by standard procedures. Microprobe analyses were performed on the scale on selected specimens. The scale, both on and below the surface, proved to be varying complex mixtures of oxides and sulfides sometimes intermixed with process stream material. Weight change records indicate that corrosion was not a serious problem during these exposures, with the coals processed to date.

• Research Organization: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
• DOE Contract Number: W-7405-ENG-26
• OSTI ID: 5270610
• Report Number(s): ORNL/TM-7365
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
36 MATERIALS SCIENCE
SRC PROCESS
MATERIALS TESTING
COAL LIQUEFACTION
ELECTRON MICROPROBE ANALYSIS
METALLOGRAPHY
PILOT PLANTS
CHEMICAL ANALYSIS
FUNCTIONAL MODELS
LIQUEFACTION
MICROANALYSIS
TESTING
THERMOCHEMICAL PROCESSES
010405* - Coal
Lignite
& Peat- Hydrogenation & Liquefaction
360105 - Metals & Alloys- Corrosion & Erosion