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97341 CORROSION AND CORROSION CONTROL METHODS IN AMINE SYSTEMS CONTAINING H2S

Picture for 97341 CORROSION AND CORROSION CONTROL
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Product Number: 51300-97341-SG
ISBN: 97341 1997 CP
Author: Alfted E. Keller, Arthur L. Cummings, Fred C. Veatch
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Overall H2S-amine system corrosion rates are determined by the rate of acid oxidation of iron by dissolved forms of H2S and CO2 in highly buffered basic solutions. Fates of interference with the laydown or removal of the protective layer of iron sulfide corrosion product from the free metal are also part of the equation. These two phenomena are functions of the concentration and form of fire oxidizing acid, the solution temperature, the fluid velocity, and the concerrtiation of heat stable salt anions. The effect of solution pH, cation content and different heat stable salt anions on the iron sulfide layer and the transport of iron in solution is examined. Maintenance of low heat stable salt anion content in solution is shown to effectively reduce the corrosion. Comparison is made with other contiol methods, such a strong base addition. Long term benefits of maintenance of low heat stable salt levels are demonstrated.
Overall H2S-amine system corrosion rates are determined by the rate of acid oxidation of iron by dissolved forms of H2S and CO2 in highly buffered basic solutions. Fates of interference with the laydown or removal of the protective layer of iron sulfide corrosion product from the free metal are also part of the equation. These two phenomena are functions of the concentration and form of fire oxidizing acid, the solution temperature, the fluid velocity, and the concerrtiation of heat stable salt anions. The effect of solution pH, cation content and different heat stable salt anions on the iron sulfide layer and the transport of iron in solution is examined. Maintenance of low heat stable salt anion content in solution is shown to effectively reduce the corrosion. Comparison is made with other contiol methods, such a strong base addition. Long term benefits of maintenance of low heat stable salt levels are demonstrated.
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