Journal Published Online: 01 March 1981
Volume 9, Issue 2

Scale and Corrosion Parameters at a Geothermal Loop Experimental Facility



Metallic alloys and nonmetallic materials, including coatings and plastic liners, were exposed to high-temperature (232.2°C [450°F]), highly saline (20%) brines in a 10-MW geothermal loop experimental facility at the Salton Sea Known Geothermal Resource Area in the Imperial Valley, Calif. Mild carbon steel corrodes rapidly, especially in presence of air, while nickel alloys are very resistant to the Salton Sea geothermal brines. The Teflon® coatings and the vinyl esters exhibited the greatest resistance among the nonmetallic materials tested. Twenty-seven proprietary scale inhibitors were tested to determine the ones most promising for use in the Salton Sea brines. Several scale control additives were effective in retarding silica precipitation at 90°C, the temperature limit of these laboratory tests.

Author Information

Jacobson, WO
San Diego Gas & Electric Co., San Diego, Calif.
Rogers, AN
NUS Corp., Sherman Oaks, Calif.
Schoepflin, F
Bechtel National, Inc., San Francisco, Calif.
Henry, PM
Bechtel National, Inc., San Francisco, Calif.
Pages: 11
Price: $25.00
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Stock #: JTE11647J
ISSN: 0090-3973
DOI: 10.1520/JTE11647J