GAS SWEETENING SOLVENTS CONTAINING QUATERNARY AMMONIUM SALTS
First Claim
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1. A method of treating oil and gas streams comprising H2S, and a carbon oxide, said method comprising the step of:
- treating said gas stream with an amine solution comprising an alkanolamine and a quaternary ammonium salt, wherein said amine solution selectively removes said H2S species over said carbon oxide.
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Abstract
A method of treating oil and gas streams comprising H2S and a carbon oxide, the method including the step of treating the oil and gas stream with an amine solution having an alkanolamine and a quaternary ammonium salt, wherein the amine solution selectively removes the H2S over the carbon oxide.
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Citations
10 Claims
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1. A method of treating oil and gas streams comprising H2S, and a carbon oxide, said method comprising the step of:
treating said gas stream with an amine solution comprising an alkanolamine and a quaternary ammonium salt, wherein said amine solution selectively removes said H2S species over said carbon oxide. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An aqueous solution comprising:
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a. from about 0.1 wt % to about 5 wt % of a quaternary ammonium salt, said ammonium salt is selected from the group consisting of 2-hydroxy-N-(2-hydroxyethyl)-N,N-dimethylethanaminium bromide;
2-hydroxy-N-(2-hydroxyethyl)-N,N-dimethylethanaminium chloride;
2-hydroxy-N-(2-hydroxyethyl)-N,N-dimethylethanaminium iodide;
2-hydroxy-N-(2-hydroxyethyl)-N,N-dimethylethanaminium bicarbonate;
2-hydroxy-N-(2-hydroxyethyl)-N,N-dimethylethanaminium carbonate;
2-hydroxy-N-(2-hydroxyethyl)-N,N-dimethylethanaminium sulfate;
2-hydroxy-N-(2-hydroxyethyl)-N,N-dimethylethanaminium phosphate;
2,3-dihydroxy-N,N,N-trimethylpropan-1-aminium chloride;
2,3-dihydroxy-N,N,N-trimethylpropan-1-aminium bromide;
2,3-dihydroxy-N,N,N-trimethylpropan-1-aminium iodide;
2,3-dihydroxy-N,N,N-trimethylpropan-1-aminium bicarbonate;
2,3-dihydroxy-N,N,N-trimethylpropan-1-aminium carbonate;
2,3-dihydroxy-N,N,N-trimethylpropan-1-aminium sulfate;
2,3-dihydroxy-N,N,N-trimethylpropan-1-aminium phosphate;
2-hydroxy-N,N-bis(2-hydroxyethyl)-N-methy ethanaminium bromide;
2-hydroxy-N,N-bis(2-hydroxyethyl)-N-methy ethanaminium chloride;
2-hydroxy-N,N-bis(2-hydroxyethyl)-N-methy ethanaminium iodide;
2-hydroxy-N,N-bis(2-hydroxyethyl)-N-methy ethanaminium bicarbonate;
2-hydroxy-N,N-bis(2-hydroxyethyl)-N-methy ethanaminium carbonate;
2-hydroxy-N,N-bis(2-hydroxyethyl)-N-methy ethanaminium sulfate;
2-hydroxy-N,N-bis(2-hydroxyethyl)-N-methy ethanaminium phosphate;
tetramethyl ammonium bromide;
tetramethyl ammonium chloride;
tetramethyl ammonium iodide;
tetramethyl ammonium bicarbonate;
tetramethyl ammonium carbonate;
tetramethyl ammonium sulfate;
tetramethyl ammonium phosphate; and
mixtures thereof; andb. from about 15 wt-% to about 99 wt % of a tertiary alkanolamine, said tertiary alkanolamine selected from the group consisting of methyldiethanolamine (MDEA), triethanolamine (TEA), dimethylethanolamine (DMEA), diethylethanolamine (DEEA), 3-dimethylaminopropane-1,2-diol (DMAPD), 3-diethylaminopropane-1,2-diol (DEAPD), 2-dimethylaminopropane-1,3-diol, 2-diethylaminopropane-1,3-diol, 2-(hydroxyethyl)-2-dimethylaminopropane-1,3-diol (DMTA), 2-(hydroxyethyl)-2-diethylaminopropane-1,3-diol (DETA), tert-butoxyaminoethoxyethanol (TBAEE) and mixtures thereof.
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10. An aqueous solution comprising:
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a. from about 0.5 wt % to about 99 wt % of a quaternary ammonium salt, said ammonium salt is selected from the group consisting of 2-hydroxy-N-(2-hydroxyethyl)-N,N-dimethylethanaminium bromide;
2-hydroxy-N-(2-hydroxyethyl)-N,N-dimethylethanaminium chloride;
2-hydroxy-N-(2-hydroxyethyl)-N,N-dimethylethanaminium iodide;
2-hydroxy-N-(2-hydroxyethyl)-N,N-dimethylethanaminium bicarbonate;
2-hydroxy-N-(2-hydroxyethyl)-N,N-dimethylethanaminium carbonate;
2-hydroxy-N-(2-hydroxyethyl)-N,N-dimethylethanaminium sulfate;
2-hydroxy-N-(2-hydroxyethyl)-N,N-dimethylethanaminium phosphate;
2,3-dihydroxy-N,N,N-trimethylpropan-1-aminium chloride;
2,3-dihydroxy-N,N,N-trimethylpropan-1-aminium bromide;
2,3-dihydroxy-N,N,N-trimethylpropan-1-aminium iodide;
2,3-dihydroxy-N,N,N-trimethylpropan-1-aminium bicarbonate;
2,3-dihydroxy-N,N,N-trimethylpropan-1-aminium carbonate;
2,3-dihydroxy-N,N,N-trimethylpropan-1-aminium sulfate;
2,3-dihydroxy-N,N,N-trimethylpropan-1-aminium phosphate;
2-hydroxy-N,N-bis(2-hydroxyethyl)-N-methy ethanaminium bromide;
2-hydroxy-N,N-bis(2-hydroxyethyl)-N-methy ethanaminium chloride;
2-hydroxy-N,N-bis(2-hydroxyethyl)-N-methy ethanaminium iodide;
2-hydroxy-N,N-bis(2-hydroxyethyl)-N-methy ethanaminium bicarbonate;
2-hydroxy-N,N-bis(2-hydroxyethyl)-N-methy ethanaminium carbonate;
2-hydroxy-N,N-bis(2-hydroxyethyl)-N-methy ethanaminium sulfate;
2-hydroxy-N,N-bis(2-hydroxyethyl)-N-methy ethanaminium phosphate;
tetramethyl ammonium bromide;
tetramethyl ammonium chloride;
tetramethyl ammonium iodide;
tetramethyl ammonium bicarbonate;
tetramethyl ammonium carbonate;
tetramethyl ammonium sulfate;
tetramethyl ammonium phosphate; and
mixtures thereof; andb. from about 0.01 wt-% to about 60 wt % of a tertiary alkanolamine, said tertiary alkanolamine selected from the group consisting of methyldiethanolamine (MDEA), triethanolamine (TEA), dimethylethanolamine (DMEA), diethylethanolamine (DEEA), 3-dimethylaminopropane-1,2-diol (DMAPD), 3-diethylaminopropane-1,2-diol (DEAPD), 2-dimethylaminopropane-1,3-diol, 2-diethylaminopropane-1,3-diol, 2-(hydroxyethyl)-2-dimethylaminopropane-1,3-diol (DMTA), 2-(hydroxyethyl)-2-diethylaminopropane-1,3-diol (DETA), tert-butoxyaminoethoxyethanol (TBAEE) and mixtures thereof.
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Specification