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Inhibition of Corrosion and Hydrogenation of Carbon Steel with a Number of Inhibitors in Weakly Acid Media Containing H2S and CO2

“…2b). A study of the diffusion of hydrogen across a steel membrane (Table 2) confirmed the known evidence [10,12] that H 2 S and CO 2 produce a stimulating effect. The decrease in the current i H of hydrogen diffusion across a membrane upon introduction of CO 2 into a solution containing hydrogen sulfide is presumably due to the concurrent adsorption of CO 2 , which is a less efficient stimulant of hydrogenation, compared with H 2 S.…”

Evaluation of different alternatives for increasing the reaction furnace temperature of Claus SRU by chemical equilibrium calculations

“…There are different forms of carbon and stainless steel corrosion when in contact with a H 2 S environment namely; sulfide stress cracking, hydrogen stress cracking, hydrogen blistering, localized corrosion (pitting) [16][17][18], and cracking in the welded region [19]. The H 2 S accelerates the hydrogen absorption in steel [20]. The hydrogen sulfide reacts with iron in the presence of water and the produced hydrogen migrates to the high stress concentration regions in the metal.…”

“…The presence of hydrogen in steel facilitates the motion of the linear effects in the crystalline structure of metal. Vagapov et al [20] concluded that the steel hydrogenation in a vapor phase occurs with the same intensity as in the aqueous phase.…”

Inhibition of hydrogen sulfide corrosion of steel by volatile amines

“…It is known [7,[9][10][11][12] that steel HSC inhibitors are usually represented by nitrogencontaining organic compounds. In order to be a VCI they should have a vapor pressure not less than 10 -6 mmHg [8].…”

“…As opposed to contact inhibitors, they have a sufficient vapor pressure (p s ) to be volatile, saturate the gas-vapor phase and are adsorbed on the steel surface creating a self-organizing protective layer. However, there is not much information on development of new VCIs for steel protection against hydrogen sulfide corrosion (HSC) [9][10][11][12]. In view of this, we studied the possibility of steel HSC inhibition by volatile amines and the impact of various media properties on it.…”