A kind of high-efficiency compound desulfurization and decarburization solvent and its application
A high-efficiency and decarbonization technology, applied in separation methods, dispersed particle separation, chemical instruments and methods, etc., can solve problems such as not being able to meet the requirements, and achieve good promotion effects, stable solvent performance, and renewable recycling of solvent performance.
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Embodiment 1
[0043] In terms of mass percentage, the high-efficiency composite desulfurization and decarburization solvent of the present embodiment includes the following components: 50% of N-methyldiethanolamine, N-[4-(methylamino)-3-nitrophenyl]diethanolamine 22.39% %, N-benzhydrylazetidin-3-ol 10%, 3-n-octyloxytetramethylene sulfone 10%, 4-(3-azidine)-2,2-dimethyl Morpholine 6%, polyether modified silicone oil 0.01%, tea polyphenol 0.6%, 2-amino-imidazolinone 1%.
[0044] The composite desulfurization and decarburization solvent is diluted with water and formulated into a solution with a mass concentration of 40%, which is used for feed gas composition including low-carbon hydrocarbons 89.5mole%, H 2 S 4.2mole%, CO 2 Gas purification of 6.24mole%, 226ppm methyl mercaptan, 148ppm ethanethiol, 41ppm isopropyl mercaptan, etc., wherein the raw material gas composition is calculated by volume percentage, and the H in the purified gas 2 S is 10ppm, CO 2 is 2.2v%, the organic sulfide is 9...
Embodiment 2
[0047] In terms of mass percentage, the high-efficiency composite desulfurization and decarburization solvent of the present embodiment includes the following components: 45% of N-methyldiethanolamine, N-[4-(methylamino)-3-nitrophenyl]diethanolamine 22% %, 1-cyclohexyl-3-azidine alcohol 10.39%, 3-n-octyloxytetramethylene sulfone 15%, 4-(3-azidine)-2,2-dimethylmorpholine 6 %, polyether modified silicone oil 0.01%, tea polyphenol 0.5%, 2-amino-imidazolinone 1.1%.
[0048] The composite desulfurization and decarburization solvent is diluted with water and formulated into a solution with a mass concentration of 45%, which is used for raw material gas composition including low-carbon hydrocarbons 90.1mole%, H 2 S 4.4mole%, CO 2 5.45mole%, methyl mercaptan 258ppm, ethanethiol 191ppm, isopropyl mercaptan 53ppm, etc., where the composition of the raw material gas is calculated by volume percentage, and the H in the purified gas 2 S is 9ppm, CO 2 is 2.2v%, the organic sulfide is 94...
Embodiment 3
[0051] In terms of mass percentage, the high-efficiency composite desulfurization and decarburization solvent of the present embodiment includes the following components: 43% of N-methyldiethanolamine, 15% of N-[4-(methylamino)-3-nitrophenyl]diethanolamine %, 1-cyclohexyl-3-azidine alcohol 10.39%, 3-isooctyloxytetramethylene sulfone 20%, 4-(3-azidine)-2,2-dimethylmorpholine 10 %, polyether modified silicone oil 0.01%, thiodipropionic acid 0.5%, di(propynyloxymethyl)isopropylbenzyl ammonium chloride 1.1%.
[0052] The composite desulfurization and decarburization solvent is diluted with water and formulated into a solution with a mass concentration of 50%, which is used for feed gas composition including low-carbon hydrocarbons 89.5mole%, H 2 S 4.2mole%, CO 2 6.24mole%, 258ppm of methyl mercaptan, 191ppm of ethanethiol, 53ppm of isopropyl mercaptan, etc., where the raw material gas composition is calculated by volume percentage, and the H in the purified gas 2 S is 10ppm, CO...
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