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US 2006/0142170 A1Published application
Descaling and corrosion inhibiting composition
AssigneeSaudi Arabian Oil Company
InventorAbdulghani Jaralla
Life of this patent
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Abstract
The present invention is directed to a composition, and a process employing same, for descaling, cleaning and inhibiting the corrosion of process equipment made of steel by including an inhibitory effective amount of acridine orange in the composition.
Claims22
A composition for cleaning and inhibiting corrosion and scale formation on the surfaces of processing equipment in contact with circulating water and/or chemicals, which comprises:
- a) hydrochloric acid;
- b) hydrofluoric acid;
- c) at least one chelating agent;
- d) a copper complexing agent;
- and
- e) acridine orange.
3 more elements
A process for cleaning and inhibiting scale formation on the surfaces of process equipment which contacts circulating water and/or chemicals, which comprises:
- contacting the process equipment surfaces for a period of time, and at a temperature which is effective to effect cleaning and/or scale inhibition with a composition comprising:
- a) hydrochloric acid;
- b) hydrofluoric acid;
- c) at least one chelating agent;
- d) a copper complexing agent;
- and
- e) acridine orange.
4 more elements
Dependencies are inferred from the claim text.