Liquid purification or separation – Processes – Making an insoluble substance or accreting suspended...
Reexamination Certificate
2008-02-07
2011-12-06
Nguyen, Nam (Department: 1778)
Liquid purification or separation
Processes
Making an insoluble substance or accreting suspended...
C210S702000, C210S721000, C210S753000, C210S754000, C210S756000, C210S759000
Reexamination Certificate
active
08070962
ABSTRACT:
A method for reclamation of a brine that includes mixing a brine containing thiocyanates with an oxidizing agent; and allowing for a time sufficient for the oxidizing agent to oxidize at least a portion of the thiocyanates is disclosed. Other methods may also include determining the quantity of unoxidized thiocyanates after the oxidizing treatment.
REFERENCES:
patent: 2639267 (1953-05-01), Pfann
patent: 4059513 (1977-11-01), Zadera
patent: 4640786 (1987-02-01), Soderquist et al.
patent: 4645608 (1987-02-01), Rayborn
patent: 4941982 (1990-07-01), Dadgar et al.
patent: 5195847 (1993-03-01), Guymon
patent: 5944195 (1999-08-01), Huang et al.
patent: 2005/0014654 (2005-01-01), Qu et al.
Wilson et al., “The oxidation of Thiocyanate ion by Hydrogen Peroxide. I. The pH-Independent Reaction,” J. Am. Chem. Soc., 1960, 82 (17), 4515-4517.
Kenova et al., “Thiocyanate Oxidation by Hydrogen Peroxide Gerenated in Gas Diffusion Electrode in Alkaline Medium,” Chemistry for Sustainable Development, 10 (2002), 291-295.
Mack et al. “Stress corrosion cracking of a cold worked 22Cr duplex stainless steel prodution tubing in a high density clear brine CaCl2 packer fluid—Results of the failure analysis at Deep Alex and associated laboratory experiments:,” Corrosion, 2002, Paper No. 02067, Nace International. pp. 1-15.
International Search Report issued in PCT Application No. PCT/US2008/054140 dated Jun. 24, 2008 (3 pages).
Written Opinion issued in PCT Application No. PCT/US2008/054140 dated Jun. 24, 2008 (4 pages).
Office Action issued in corresponding Canadian Application No. 2,679,204 dated Apr. 29, 2011 (2 pages).
M-I L.L.C.
Nguyen Nam
Osha • Liang LLP
Stelling Lucas
LandOfFree
Using oxidizing agents to remove thiocyanates from brines does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Using oxidizing agents to remove thiocyanates from brines, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Using oxidizing agents to remove thiocyanates from brines will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4308825