Corrosion inhibitor for alkanolamine units

Details Corrosion inhibitor for alkanolamine units Corrosion inhibitor for alkanolamine units

C - Chemistry, Metallurgy

09

K

C09K 15/00 (2006.01) B01D 53/14 (2006.01) C01B 17/00 (2006.01) C01B 31/00 (2006.01) C10G 75/02 (2006.01) C10L 3/10 (2006.01) C23F 11/06 (2006.01)

Patent

CA 2301114

The corrosion of metals in contact with an aqueous alkanolamine solution in an acid gas removal unit is inhibited by adding a corrosion inhibiting amount of an alkanemonothiol or alkanedithiol compound to the aqueous alkanolamine solution. The alkanemonothiol and alkanedithiol compounds are useful for inhibiting the corrosion of metals in both the acid gas rich and lean portions of the acid gas removal unit.

Selon cette invention, on inhibe la corrosion des métaux en contact avec une solution d'alcanolamine aqueuse dans des unités d'élimination du gaz acide en ajoutant à cette solution une quantité inhibitrice de corrosion d'un composé d'alcanemonothiol ou d'alcanedithiol. Ces composés sont utilisés pour inhiber la corrosion des métaux à la fois dans des parties riches et dans des parties pauvres en gaz acide de l'unité d'élimination du gaz acide.

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