The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 02, 2013
Filed:
May. 11, 2011
Frederic Vitse, Knoxville, TN (US);
Stephen A. Bedell, Knoxville, TN (US);
Frederic Vitse, Knoxville, TN (US);
Stephen A. Bedell, Knoxville, TN (US);
Abstract
A structural low carbon steel in combination with and in contact with an aqueous MDEA solvent that includes as an amine-based chemical additive. When mixed with MDEA solvent to form a MDEA solution, the MDEA-based solution in contact with carbon steel reduces the corrosion rate of low carbon structural carbon steels having a carbon content greater than about 0.18% by weight is significantly reduced when the concentrations of CO, Oand heat stable salts (HSS) are controlled below critical amounts. The MDEA solution, when controlling the concentrations of CO, Oand HSS below critical amounts, suppresses the corrosion of carbon steel having a carbon content greater than about 0.18%. A smooth surface finish further suppresses the corrosion of the low carbon structural steel. When the CO, Oand HSS are maintained below critical values, a low carbon structural steel having a micropolished surface finish displayed improved corrosion resistance.