Traced corrosion inhibitor for closed loop systems
AssigneeChemtreat, Inc.
InventorPatrick WOOD
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Abstract
This disclosure provides methods of treating a closed loop system that includes a heat transfer fluid in contact with a corrodible metal surface such as a surface made from aluminum, carbon steel, and/or mild steel. A corrosion inhibition compound that includes a fluorophore group is combined with the heat transfer fluid. The amount of the corrosion inhibition compound in the heat transfer fluid can then be determined by measuring the fluorescence signal of the corrosion inhibition compound, and the amount of corrosion inhibition compound that is added to the heat transfer fluid can be controlled.
Claims24
A method for treating a closed loop system that includes a corrodible metal surface, the method comprising:
- providing a heat transfer fluid that is in contact with the corrodible metal surface and includes a naphthalene dicarboxylic acid;
- measuring a fluorescence signal of the naphthalene dicarboxylic acid in the heat transfer fluid;
- and
- determining an amount of the naphthalene dicarboxylic acid in the heat transfer fluid based on the measured fluorescence signal.
A method for treating a closed loop system that includes a heat transfer fluid that is in contact with a corrodible metal surface that is selected from an aluminum surface, a mild steel surface, and a carbon steel surface, the method comprising:
- adding a corrosion inhibition composition to the heat transfer fluid, which includes a corrosion inhibition compound that has a fluorophore group and is effective to inhibit corrosion of the corrodible metal surface;
- and
- then measuring a fluorescence signal of the corrosion inhibition compound in the heat transfer fluid.
A method for treating a closed loop system that includes a corrodible metal surface, the method comprising:
- providing a heat transfer fluid that is in contact with the corrodible metal surface and includes (i) a naphthalene derivative, and (ii) at least one organic acid compound selected from a C6-C14 aliphatic dicarboxylic acid and a C6-C14 aliphatic monocarboxylic acid;
- measuring a fluorescence signal of the naphthalene derivative in the heat transfer fluid;
- and
- evaluating an amount of the naphthalene derivative in the heat transfer fluid based on the measured fluorescence signal.
Dependencies are inferred from the claim text.