Evaluation of coke-breeze backfills for cathodic protection groundbeds

Journal Article · Sat Jul 01 04:00:00 EDT 1989 · Materials Performance; (USA)

OSTI ID:5567700

Jakobs, J A ^[1]; Wozniewski, A ^[2]

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1. Corrosion Consultant, 10515-134 St., Edmonton, Alberta T5N 2B4 (CA)
2. Esso Resources Canada Ltd., Calgary, AB (Canada). Research Dept.

Assessment of the performance of calcined petroleum coke backfills has been conducted in a comparative test with metallurgical coke and sand as reference. High-silicon-chromium-iron anodes were used in evaluation of the backfills. The effect of backfill granulation, conductivity, fluidity, sulfur content, and moisture on anodes consumption was investigated. Findings of the investigation have practical aspects and will be useful in the design and operation of the cathodic protection impressed current groundbeds. Particularly, it was found that a higher-quality backfill results in a lower consumption rate of the anodes. Using more expensive, fine petroleum coke is not justified in regular ground bends. A relatively high sulfur content of calcined petroleum products does not affect the anode consumption rate.

• OSTI ID: 5567700
• Journal Information: Materials Performance; (USA), Journal Name: Materials Performance; (USA) Vol. 28:7; ISSN MTPFB; ISSN 0094-1492
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
024000* -- Petroleum-- Storage-- (-1989)
36 MATERIALS SCIENCE
360105 -- Metals & Alloys-- Corrosion & Erosion
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400400 -- Electrochemistry
ANODES
BACKFILLING
CATHODIC PROTECTION
CHEMISTRY
CHROMIUM
COKE
CORROSION PROTECTION
ELECTROCHEMISTRY
ELECTRODES
ELEMENTS
ENERGY SOURCES
FOSSIL FUELS
FUELS
IRON
METALS
MOISTURE
PETROLEUM
SEMIMETALS
SILICON
SOILS
SULFUR CONTENT
TRANSITION ELEMENTS
UNDERGROUND FACILITIES