Removal of H2S and/or mercaptans form supercritical and/or liquid CO2
AssigneeBaker Hughes Incorporated
InventorsTauseef Salma, Doug Elledge, Paula Kolb, Scot Haines
Life of this patent
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Abstract
A method for removing or scavenging hydrogen sulfide (H2S) and/or mercaptans from supercritical and/or liquid carbon dioxide (CO2) using triazine scavenging agents is described. Preferred triazines are hexahydrotriazines.
Claims18
A method for scavenging a sulfur compound from carbon dioxide selected from the group consisting of liquid CO2, supercritical CO2, and mixtures thereof comprising adding to the carbon dioxide an effective amount of a triazine to scavenge at least a portion of the sulfur compound, where the sulfur compound is selected from the group consisting of H2S and mercaptans.
A method for scavenging a sulfur compound from carbon dioxide selected from the group consisting of liquid CO2, supercritical CO2, and mixtures thereof comprising adding to the carbon dioxide a hexahydrotriazine to scavenge at least a portion of the sulfur compound, where the amount of hexahydrotriazine ranges from about 1 to about 100 parts per part sulfur compound, where the sulfur compound is selected from the group consisting of H2S and mercaptans.
A carbon dioxide composition selected from the group consisting of liquid CO2, supercritical CO2, and mixtures thereof comprising an effective amount of a triazine to scavenge at least a portion of a sulfur compound that is present, where the sulfur compound is selected from the group consisting of H2S and mercaptans.
A carbon dioxide composition selected from the group consisting of liquid CO2, supercritical CO2, and mixtures thereof comprising a hexahydrotriazine to scavenge at least a portion of a sulfur compound that is present, where the amount of hexahydrotriazine ranges from about 1 to about 100 parts per part sulfur compound, where the sulfur compound is selected from the group consisting of H2S and mercaptans.
Dependencies are inferred from the claim text.