Solutions and methods for inhibiting corrosion
AssigneeChampion Technologies, Inc.
InventorsPaul Eaton, Sumeet Kanwar
Life of this patent
Estimating the term…
Abstract
A corrosion inhibitor comprising a dispersant, an imidazoline, an amide, an alkyl pyridine and a heavy aromatic solvent. The resultant blend effectively inhibits corrosion of flow lines containing low pH mixtures of hydrocarbons, water, and acid gases.
Claims20
A process for inhibiting corrosion of a flow line that contains a fluid, comprising adding to the fluid contained in the flow line a corrosion inhibiting amount of corrosion inhibitor composition comprising:
- a. a pentane-soluble imidazoline;
- b. a pentane-soluble amide;
- c. a pyridine-based compound selected from the group consisting of:
- pyridine, monoalkyl pyridines, dialkyl pyridines, and trialkyl pyridines where the alkyl groups have one to three carbon atoms;
- d. an amide-based, pentane-soluble dispersant;
- and
- e. a heavy aromatic solvent having a boiling point of 400-580 degrees Fahrenheit;
- said imidazoline, amide, pyridine-based compound, dispersant, and solvent being present in said composition in selective amounts sufficient to impart to said composition a WSIM value greater than 80.
A process for inhibiting corrosion of a flow line that contains a fluid, comprising adding to the fluid contained in the flow line a corrosion inhibiting amount of a corrosion inhibitor composition formed by blending the following:
- a. a pentane-soluble imidazoline;
- b. a pentane-soluble amide selected from the group consisting of pentane soluble amides, diamides, triamides, and polyamides;
- c. a pyridine-based compound selected from the group consisting of:
- pyridine, monoalkyl pyridines, dialkyl pyridines, and trialkyl pyridines where the alkyl groups have one to three carbon atoms;
- d. an amide-based, pentane-soluble dispersant;
- and
- e. a heavy aromatic solvent having a boiling point of 400-580 degrees Fahrenheit;
- said imidazoline, amide, pyridine-based compound, dispersant, and solvent being present in said composition in selective amounts sufficient to impart to said composition a WSIM value greater than 80.
A process for inhibiting corrosion of a flow line that contains a fluid comprising adding to the fluid contained in the flow line a corrosion inhibitor composition formed by blending the following:
- a. about five weight percent of a bis-imidazoline having the formula:
- ##STR8## where R.sub.1 and R.sub.2 are selected from the group consisting of all hydrocarbons having twelve to eighteen carbon atoms;
- b. about fifteen weight percent of an amide having the formula:
- ##STR9## where R.sub.3 is selected from the group consisting of all hydrocarbons having twelve to eighteen carbon atoms;
- c. about five weight percent of an amide-based, pentane-soluble dispersant;
- d. about ten weight percent of a pyridine-based compound selected from the group consisting of:
- pyridine, monoalkyl pyridines, dialkyl pyridines, and trialkyl pyridines where the alkyl groups have one to three carbon atoms;
- and
- e. about sixty five weight percent heavy aromatic solvent having a boiling point of 400-580 degrees Fahrenheit;
- wherein said corrosion inhibitor composition has a WISM value greater than 80.
A process for inhibiting corrosion of a flow line of a refinery distillation tower overhead hydrocarbon stream comprising adding to said overhead stream a corrosion inhibitor composition formed by blending the following:
- a. a pentane-soluble imidazoline;
- b. a pentane-soluble amide selected from the group consisting of pentane soluble amides, diamides, triamides, and polyamides;
- c. a pyridine-based compound selected from the group consisting of:
- pyridine, monoalkyl pyridines, dialkyl pyridines, and trialkyl pyridines where the alkyl groups have one to three carbon atoms;
- d. an amide-based, pentane-soluble dispersant;
- and
- e. a heavy aromatic solvent having a boiling point of 400-580 degrees Fahrenheit;
- said imidazoline, amide, pyridine-based compound, dispersant, and solvent being present in said composition in selective amounts sufficient to impart to said composition a WSIM value greater than 80.
Dependencies are inferred from the claim text.