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Inhibition of corrosion in a pipeline carrying a slurry. [2 claims; chromate inhibitors]

Patent ·
OSTI ID:7116476
The method of inhibiting corrosion in a steel pipeline by a slurry comprising water as the vehicle for carrying a comminuted material which is reactive with oxygen, as for example, coal, is described. Inhibition of corrosion is obtained by the addition to the slurry of pellets containing hexavalent chromate, which is released into the slurry in a controlled amount sufficient to inhibit corrosion but wherein the concentration of chromate is not so great that excessive amounts thereof are consumed by the slurry material. 2 claims, 2 figures.
Assignee:
Bechtel International Corp.
Patent Number(s):
US 3996058
OSTI ID:
7116476
Country of Publication:
United States
Language:
English

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Related Subjects

01 COAL, LIGNITE, AND PEAT
010600 -- Coal
Lignite
& Peat-- Properties & Composition
013000 -- Coal
Lignite
& Peat-- Transport
Handling
& Storage
36 MATERIALS SCIENCE
360105* -- Metals & Alloys-- Corrosion & Erosion
ADDITIVES
CARBONACEOUS MATERIALS
CHEMICAL REACTIONS
CHROMATES
CHROMIUM COMPOUNDS
COAL
CORROSION
CORROSION INHIBITORS
CORROSION PROTECTION
CRYOGENIC FLUIDS
DISPERSIONS
ELEMENTS
ENERGY SOURCES
FLUIDS
FOSSIL FUELS
FREIGHT PIPELINES
FUELS
MIXTURES
NONMETALS
OXYGEN
OXYGEN COMPOUNDS
PIPELINES
SLURRIES
SLURRY PIPELINES
SUSPENSIONS
TRANSITION ELEMENT COMPOUNDS
TRANSPORT