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99019 pH-STABIIIZATION IN THE TROLL GAS-CONDENSATE PIPELINES

Picture for 99019 pH-STABIIJZATION IN THE TROLL GAS-CONDENSATE
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Product Number: 51300-99019-SG
ISBN: 99019 1999 CP
Author: Stein Olsen, Olav Lunde, Arne Dugstad
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Iron from corrosion in two gas-condensate pipelines caused problems in the glycol regeneration units due to iron precipitation. Even if the amount of iron did not represent any significant corrosion problem in the pipelines, the solution to this problem was to reduce the corrosion rate by use of pH stabilization. NaOH was injected to achieve a pH value of 7.4 which reduced the iron content to 10 ppm. This corresponded to a maximum corrosion rate of less than 0.1 mm/year. Keywords: pH stabilization, CO2 corrosion, pipeline corrosion
Iron from corrosion in two gas-condensate pipelines caused problems in the glycol regeneration units due to iron precipitation. Even if the amount of iron did not represent any significant corrosion problem in the pipelines, the solution to this problem was to reduce the corrosion rate by use of pH stabilization. NaOH was injected to achieve a pH value of 7.4 which reduced the iron content to 10 ppm. This corresponded to a maximum corrosion rate of less than 0.1 mm/year. Keywords: pH stabilization, CO2 corrosion, pipeline corrosion
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