Composition and method for elimination of hydrogen sulfide and mercaptans
AssigneeLyra Energy SRL
InventorsKonstantin Poukalov, Sr., Alexander Semenyuk, Kevin G. Liu
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Abstract
A scavenging composition and method for scavenging hydrogen sulfide and/or mercaptans from fluids. The scavenging composition comprises an alkali metal nitrite and a nitrogen-containing scavenger, and optionally an inorganic base, as a hydrogen sulfide and/or a mercaptan scavenger for hydrocarbon fluids, particularly for crude oil, field oil, fuel oil, straight run distillates, cracked distillates, residual fuels, natural gas, petroleum associated gas and the like.
Claims40
A method for scavenging a sulfur-containing compound contained in a hydrocarbon medium, wherein the sulfur-containing compound is hydrogen sulfide, a mercaptan or a combination thereof, the method comprising:
- contacting the hydrocarbon medium with an aqueous solution comprising at least one alkali metal nitrite and at least one organic nitrogen-containing scavenger.
A method for scavenging a sulfur-containing compound contained in a hydrocarbon medium, wherein the sulfur-containing compound is hydrogen sulfide, a mercaptan or a combination thereof, the method comprising:
- contacting the hydrocarbon medium with an aqueous solution of at least one alkali metal nitrite, and an aqueous solution of at least one organic nitrogen-containing scavenger;
- wherein the at least one alkali metal nitrite is present in a relative amount of 1 mole of the alkali metal nitrite per 2-4 moles of the sulfur in the sulfur-containing compound, and the at least one organic nitrogen-containing scavenger is present in a relative amount of 1 mole of nitrogen in the organic nitrogen-containing scavenger per 2-20 moles of the sulfur in the sulfur-containing compound;
- and
- wherein the hydrocarbon medium is a liquid.
A scavenger composition comprising:
- an aqueous solution comprising at least one alkali metal nitrite, and at least one organic nitrogen-containing scavenger.
Dependencies are inferred from the claim text.