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US 12,654,130 B2Granted
Use of silica nanoparticles with glyoxal for H2S scavenging
AssigneeNissan Chemical America Corporation
InventorsJohn Edmond Southwell, Samuel James Maguire-Boyle
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Abstract
A process to remove H2S from a stream comprising the steps of adding a glyoxal, a silica nanoparticle composition, and optionally a triazine to the stream. The stream is selected from the group consisting of Oil streams, Gas streams, CO2 point source purification streams and Geothermal Energy System streams.
Claims7
A process to remove H2S from a stream comprising the steps of:
- a) Adding a fluid consisting of an aqueous solution of glyoxal and one or more types of silica nanoparticles, optionally a triazine, to a stream comprising H2S,
- wherein the stream is selected from the group consisting of Oil streams, Gas streams, CO2 point source purification streams and Geothermal Energy System streams.
A process to remove H2S from a stream comprising the step of:
- a) Adding a fluid comprising glyoxal and one or more types of silica nanoparticles to a stream comprising H2S,
- wherein the stream is selected from the group consisting of Oil streams, Gas streams, CO2 point source purification streams and Geothermal Energy System streams,
- and
- wherein the one or more types of silica nanoparticles are selected from the group consisting of aluminum oxide functionalized silica nanoparticles, aqueous acidic colloidal silica dispersion, and aqueous alkaline hydrophilic surface treated colloidal silica dispersion.
1 more element
Dependencies are inferred from the claim text.