US 12,226,714 B2
Hydrogen sulfide mitigation methods and systems
Robert D. Allison, III, Conroe, TX (US)
Assigned to Viro Petroleum & Energy, LLC, Conroe, TX (US)
Filed by Viro Petroleum & Energy, LLC, Conroe, TX (US)
Filed on Nov. 13, 2023, as Appl. No. 18/507,241.
Application 18/507,241 is a continuation of application No. 17/874,067, filed on Jul. 26, 2022, granted, now 11,813,551.
Claims priority of provisional application 63/281,800, filed on Nov. 22, 2021.
Prior Publication US 2024/0082754 A1, Mar. 14, 2024
Int. Cl. B01D 19/00 (2006.01); B01D 53/52 (2006.01); B01D 53/82 (2006.01)
CPC B01D 19/0005 (2013.01) [B01D 53/52 (2013.01); B01D 53/82 (2013.01); B01D 2221/08 (2013.01); B01D 2251/602 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A method of reduction of hydrogen sulfide levels in sour crude oil, comprising the steps of:
providing a sparging gas at a defined pressure to a sparging assembly comprising
a manifold and one or more gas spargers submerged within a mass of sour crude oil residing in a storage tank;
monitoring hydrogen sulfide levels via a hydrogen sulfide concentration sensor located in a headspace of the storage tank;
causing a circulation fan to drive stripping gas into the headspace through a supply duct when hydrogen sulfide concentration levels in the headspace exceed a predetermined level; and
directing a gaseous mixture from the headspace through a return duct coupled to an in-line filter, the gaseous mixture comprising the stripping gas, sparging gas, and excess hydrogen sulfide gas accumulating in the headspace.