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US 2018/0021723 A1Published application
Gas treating solutions containing imidazole-amine compounds
AssigneeThe Board of Trustees of The University of Alabama
InventorJason Edward Bara
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Abstract
Systems comprising a composition where an imidazole is tethered to an amine and a solvent are described herein. Methods of their preparation and use are also described herein. The methods of using the systems include the reduction of volatile compounds from gas streams and liquid stream.
Claims29
A method for reducing volatile compounds from a stream, comprising:
- contacting the stream with a system comprising an imidazole tethered to an amine and a solvent,
- wherein the imidazole tethered to an amine is non-ionic under neutral conditions.
A method for sweetening a natural gas feed stream, comprising:
- contacting the natural gas feed stream with a system comprising an imidazole tethered to an amine, wherein the imidazole tethered to an amine is non-ionic under neutral conditions, and a solvent to form a purified natural gas feed stream and a gas-rich system;
- and separating the purified natural gas feed stream from the gas-rich system.
A system for the reduction of volatile compounds, comprising:
- an imidazole tethered to an amine, wherein the imidazole tethered to an amine is non-ionic under neutral conditions;
- a solvent;
- and
- a volatile compound selected from the group consisting of carbon dioxide, hydrogen sulfide, sulfur dioxide, nitrogen oxide, nitrogen dioxide, carbonyl sulfide, carbon disulfide, or mixtures thereof.
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Dependencies are inferred from the claim text.