US 12,187,631 B2
Process for decontamination of hazardous sulfur compounds in sour water tanks
Stephen D. Matza, Sugarland, TX (US); and Jack G. Frost, Duncan, OK (US)
Assigned to UNITED LABORATORIES INTERNATIONAL, LLC, Houston, TX (US)
Filed by United Laboratories International, LLC, Houston, TX (US)
Filed on Sep. 12, 2023, as Appl. No. 18/367,348.
Application 18/367,348 is a continuation of application No. 16/996,800, filed on Aug. 18, 2020, granted, now 11,753,320.
Application 16/996,800 is a continuation of application No. 15/797,492, filed on Oct. 30, 2017, granted, now 10,745,303, issued on Aug. 18, 2020.
Application 15/797,492 is a continuation of application No. 14/512,987, filed on Oct. 13, 2014, granted, now 9,815,720, issued on Nov. 14, 2017.
Application 14/512,987 is a continuation of application No. 13/650,561, filed on Oct. 12, 2012, granted, now 9,512,019, issued on Dec. 6, 2016.
Claims priority of provisional application 61/546,481, filed on Oct. 12, 2011.
Prior Publication US 2024/0067543 A1, Feb. 29, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. C02F 1/72 (2023.01); C02F 1/02 (2023.01); C02F 1/38 (2023.01); C02F 1/68 (2023.01); C10G 29/04 (2006.01); C10G 29/20 (2006.01); C02F 101/10 (2006.01); C02F 103/36 (2006.01); C07D 265/32 (2006.01); C09K 8/532 (2006.01); E21B 21/06 (2006.01); E21B 43/34 (2006.01)
CPC C02F 1/725 (2013.01) [C02F 1/02 (2013.01); C02F 1/38 (2013.01); C02F 1/68 (2013.01); C10G 29/04 (2013.01); C10G 29/20 (2013.01); C02F 2101/101 (2013.01); C02F 2103/365 (2013.01); C02F 2209/02 (2013.01); C02F 2305/02 (2013.01); C07D 265/32 (2013.01); C09K 8/532 (2013.01); C09K 2208/20 (2013.01); C10G 2300/207 (2013.01); C10G 2300/807 (2013.01); E21B 21/063 (2013.01); E21B 43/34 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method for treating contaminants in water, comprising:
(A) providing a vessel comprising water, wherein the water comprises hydrogen sulfide;
(B) introducing methylmorpholine-N-oxide into the vessel, wherein the amount of methylmorpholine-N-oxide is added to the vessel such that the mole ratio of methylmorpholine-N-oxide:hydrogen sulfide in the vessel is from about 1.0 mole methylmorpholine-N-oxide:1.0 mole hydrogen sulfide to about 3.0 mole methylmorpholine-N-oxide:1.0 mole hydrogen sulfide, or any range or mole ratio therebetween;
(C) introducing iron oxide into the vessel, wherein the iron oxide is added to the vessel such that the amount of iron oxide present in the water is from about 100 ppm to about 1,000 ppm;
(D) allowing the methylmorpholine-N-oxide to react with the hydrogen sulfide in the presence of the iron oxide, wherein the iron oxide catalyzes a reaction between the methylmorpholine-N-oxide and the hydrogen sulfide.