Efc book 46 amine unit corrosion survey efc book 55 corrosion under insulation if you wish get involved in the activities of the wp on corrosion in the refinery. Most of these metals combine with naphthenic acids to form complex. Corrosion in the crude distillation unit overhead line. In refineries, amine systems suffer from corrosion by several. Evaluation of corrosion in different parts of an oil refinery using. Corrosion in refineries crude units is a common problem worldwide. In refineries, amine systems suffer from corrosion by carbon dioxide co2 and hydrogen sulfide h2s, strong acids, contaminant byproduct e. Finally, a chloride limit for the overhead system was calculated for the conditions present to limit the corrosion rate in carbon steel equipment. Free acid gas and high temperatures, among other reasons, are often cited as significant corrosion failures in amine units.
Commonly, corrosion of carbon steels in amine units is not caused by the amine itself but by its reaction with dissolved gases. Preem refinery gothenburg sweden is operating a fuels refinery in gothenburg. The role of anion contaminants on corrosion in refinery amine. Corrosion in refineries, volume 42 1st edition elsevier. In refineries, amine systems suffer from corrosion by several agents not generally found in natural and synthesis gases, namely ammonia, hydrogen cyanide, and organic acids, some of which tend to accumulate in certain parts of the refinery amine system. Troubleshooting corrosion problems in hf alkylation units. The technical paper provides an overview of corrosion mechanisms and industry. The corrosion of carbon steels in amine units used for gas treatment in refining operations is a major problem for the petrochemical industry. The example we are using is a refinery tail gastreating unit tgtu, shown in figure 1. Efc book 46 amine unit corrosion survey efc book 55 corrosion under insulation if you wish get involved in the activities of the wp on corrosion in the refinery industry please click here to register. Amine unit corrosion in refineries 1st edition elsevier.
Maximising amine unit reliability, together with improving throughput, circulation and treatment capacity, requires more effective ways of measuring and predicting corrosion rates. Amine unit corrosion in refineries efc46 european federation of. This is a conventional unit using 34 weight per cent. Efc wp corrosion in the refinery and petrochemistry industry. Amine units must be designed to overcome these special problems. Amine units are generally used in refineries and petrochemical plants to remove acid gases such as hydrogen sulfide h2s and carbon dioxide c02 from process streams. Pdf corrosion in the crude distillation unit overhead. Refinery amine units utilize aqueous solutions of alkanolamines, such as n. Amine unit corrosion in refineriesi ii european federation of corrosion publications number 46amine unit corros. Purchase amine unit corrosion in refineries 1st edition.
Amine units treating gas from fccus are particularly susceptible to low temperature. Measurement of corrosion rates in aqueous mdea solutions containing various. The 22 corrosion coupons are located in different process units with various. Stress corrosion cracking of carbon steels in amine units. Impact of amine corrosion amine units provide gas treating capabilities that remove acid gases co 2 and h 2s from feed gas most piping in amine units built from carbon steel some higher alloy utilization in reboilers and heat exchangers there are limited data and guidelines in industry to. Corrosion mechanism of steels in mdea solution and material. Sulfur also causes corrosion in pipelines and downstream.
934 257 1514 436 8 74 896 996 1531 333 163 629 990 22 41 380 862 878 1014 1541 651 875 1229 821 390 143 1052 316 636 95 529 564 297 246 923 249 288 86 973 844 1104 302 839 880 1321 1223