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US 10,246,382 B2Granted
Catalytic systems and methods for process stream treatment
AssigneeSiemens Energy, Inc.
InventorsChad L. Felch, Matthew R. Patterson, Bryan J. Kumfer
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Abstract
Catalytic systems and methods for treating process streams are disclosed. Catalytic wet oxidation and hydrolysis techniques may be used to treat one or more undesirable constituents such as HPAM and KHI. Methane may be produced in connection with at least some embodiments.
Claims9
A method of producing methane comprising:
- subjecting an aqueous fluid comprising an organic compound capable of being hydrolyzed to catalytic conditions effective to hydrolyze the at least one organic compound in the aqueous fluid while generating an amount of methane therefrom;
- wherein the catalytic conditions comprise contacting the aqueous fluid with a heterogeneous catalyst comprising ruthenium, and the organic compound capable of being hydrolyzed comprises a kinetic hydrate inhibitor and/or a hydrolyzed polyacrylamide.
A method of producing methane comprising:
- introducing a produced water comprising a chemical oxygen demand to a treatment vessel;
- subjecting the produced water to a pressure from about 20 atm to about 240 atm in or upstream of the treatment vessel;
- subjecting the produced water to a temperature of about 150° C. to about 373° C. in or upstream of the treatment vessel;
- introducing a heterogeneous catalyst comprising ruthenium to the produced water in or upstream of the treatment vessel to promote methane formation while reducing an amount of chemical oxygen demand of the produced water;
- hydrolyzing a kinetic hydrate inhibitor and/or a hydrolyzed polyacrylamide in the produced water;
- and
- capturing the formed methane.
4 more elements
Dependencies are inferred from the claim text.