Corrosion control using organic filmers and passivators in systems for processing nitrogen-containing solutions
AssigneeChemtreat, Inc.
InventorsRajendra Prasad Kalakodimi, Santanu Banerjee, Jared Andrew Green
Life of this patent
Estimating the term…
Abstract
Methods and compositions for inhibiting corrosion of a corrodible metal surface that contact a nitrogen-containing solution. The method comprises adding a chemical treatment composition to the nitrogen-containing solution that includes an organic filmer and a passivator. The organic filmer may be a hydroxycarboxylic acid. The chemical treatment composition may further include a surface-active compound.
Claims13
A method of inhibiting corrosion of a corrodible metal surface that contacts a nitrogen-containing solution including elemental nitrogen in a range of 28 to 34% by wt %, the method comprising:
- adding a chemical treatment composition to the nitrogen-containing solution that includes an organic filmer and a passivator,
- wherein the organic filmer includes a hydroxycarboxylic acid selected from the group consisting of tartaric acid and glycolic acid, and
- the treatment composition is provided in a sufficient amount and for a sufficient time to form a stable protective film on at least a portion of the corrodible metal surface.
Dependencies are inferred from the claim text.