Compositions – Preservative agents – Anti-corrosion
Patent
1993-07-30
1994-11-29
Stoll, Robert L.
Compositions
Preservative agents
Anti-corrosion
252394, 422 16, 208 47, 208 97, 208177, C23F 1114
Patent
active
053687744
ABSTRACT:
The present invention provides compositions and methods which are effective to prevent corrosion of metal surfaces involved in refining solutions having relatively high partial pressures of carbon dioxide. The compositions of the present invention comprise mixtures of a pyridinium quaternary salt and an organic compound, such as thiourea, which contains at least one sulfur atom double bonded to a carbon atom. The compositions are added substantially continuously to the solution to be treated to result in a final concentration of at least about 30 ppm of pyridinium quaternary salt, preferably between about 56-70 ppm, and at least about 5 ppm double bonded sulfur containing compound, preferably between about 10-13 ppm.
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Borgard Bradley G.
Harrell, Jr. Jack B.
Link John
Baker Hughes Incorporated
Fee Valerie D.
Stoll Robert L.
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