US 12,145,864 B2
Method and system for removing hydrogen sulfide from sour oil and sour water
Galen Brenize, Parker, CO (US); and Jeffrey Blair Morris, Evanston, WY (US)
Assigned to Anschutz Exploration Corporation, Denver, CO (US)
Filed by Anschutz Exploration Corporation, Denver, CO (US)
Filed on Sep. 19, 2023, as Appl. No. 18/369,977.
Application 18/369,977 is a continuation of application No. 17/902,065, filed on Sep. 2, 2022, granted, now 11,767,236, issued on Sep. 26, 2023.
Application 17/902,065 is a continuation of application No. 17/141,214, filed on Jan. 4, 2021, granted, now 11,440,815, issued on Sep. 13, 2022.
Application 17/141,214 is a continuation in part of application No. 15/945,277, filed on Apr. 4, 2018, granted, now 10,882,762, issued on Jan. 5, 2021.
Application 15/945,277 is a continuation of application No. 15/646,153, filed on Jul. 11, 2017, granted, now 9,938,163, issued on Apr. 10, 2018.
Application 15/646,153 is a continuation of application No. 15/180,426, filed on Jun. 13, 2016, granted, now 9,708,196, issued on Jul. 18, 2017.
Application 15/180,426 is a continuation in part of application No. 14/709,286, filed on May 11, 2015, granted, now 9,364,773, issued on Jun. 14, 2016.
Application 14/709,286 is a continuation in part of application No. 14/185,006, filed on Feb. 20, 2014, granted, now 9,028,679, issued on May 12, 2015.
Claims priority of provisional application 61/768,029, filed on Feb. 22, 2013.
Prior Publication US 2024/0010523 A1, Jan. 11, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. C02F 1/20 (2023.01); B01D 19/00 (2006.01); B03C 5/02 (2006.01); C02F 1/58 (2023.01); C10G 21/16 (2006.01); C10G 21/30 (2006.01); C10G 31/08 (2006.01); C02F 1/66 (2023.01); C02F 101/10 (2006.01); C02F 101/32 (2006.01)
CPC C02F 1/20 (2013.01) [B01D 19/0005 (2013.01); B01D 19/0063 (2013.01); B01D 19/0068 (2013.01); B01D 19/0073 (2013.01); B03C 5/02 (2013.01); C02F 1/58 (2013.01); C10G 21/16 (2013.01); C10G 21/30 (2013.01); C10G 31/08 (2013.01); C02F 1/66 (2013.01); C02F 2101/101 (2013.01); C02F 2101/325 (2013.01); C02F 2209/005 (2013.01); C02F 2209/265 (2013.01); C02F 2303/02 (2013.01); C10G 2300/207 (2013.01); C10G 2300/4068 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A method for removing hydrogen sulfide from sour water, comprising:
a) treating a first H.sub.2S water to remove a portion of hydrogen sulfide contained therein by bubbling air up through the first H.sub.2S water, thereby generating an amount of a second H.sub.2S water having less hydrogen sulfide than the first H.sub.2S water;
b) collecting the air after it has bubbled through the first H.sub.2S water, the collected air comprising hydrogen sulfide;
c) mixing the collected air with a stream of air to form an air mixture that contains a lower concentration of hydrogen sulfide than the collected air; and
d) combining the second H.sub.2S water with the first H.sub.2S water,
e) maintaining the pH of at least one of the first H.sub.2S water and the second H.sub.2S water at no more than about 7.0, and
f) venting the air mixture to the environment;
wherein steps a) through d) are repeated until an amount of hydrogen sulfide in the first H.sub.2S water is below a predetermined amount and measuring an amount of hydrogen sulfide in the collected air, and wherein hydrogen sulfide is removed from the sour water without the use of catalyst chemicals or scavenger chemicals, wherein the method is carried out under atmospheric pressure, and wherein a temperature of the sour water is above 45 degrees Fahrenheit.