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公开(公告)号：US11602714B2
公开(公告)日：2023-03-14
申请号：US17392867
申请日：2021-08-03
摘要： A process for absorbing carbon dioxide from a gas stream containing carbon dioxide, including the steps of contacting the gas stream with an aqueous composition including a substituted heteroaromatic compound having a six-membered heteroaromatic ring with from 1 to 3 nitrogen atoms in the heteroaromatic ring and at least one substituent wherein at least one of the substituents is of formula —R1NH2 wherein R1 is selected from C1 to C6 alkylene and ethers of formula —R2—O—R3— wherein R2 and R3 are C1 to C3 alkylene.
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公开(公告)号：US20230071790A1
公开(公告)日：2023-03-09
申请号：US17903375
申请日：2022-09-06
IPC分类号： C12M1/00 , B01D53/78 , B01D53/18 , C01F5/24 , C01F11/18 , C04B22/10 , C04B28/04 , C01B32/60 , B01D53/62 , C12M1/40
摘要： Aspects of the invention include methods of removing carbon dioxide (CO2) from a CO2 containing gas. In some instances, the methods include contacting CO2 containing gas with a bicarbonate buffered aqueous medium under conditions sufficient to produce a bicarbonate rich product. Where desired, the resultant bicarbonate rich product or a component thereof may then be stored or further processed, e.g., combined with a divalent alkaline earth metal cation, under conditions sufficient to produce a solid carbonate composition. Aspects of the invention further include systems for practicing the methods, as well as products produced by the methods.
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公开(公告)号：US11590446B2
公开(公告)日：2023-02-28
申请号：US15930145
申请日：2020-05-12
发明人： Mowen Li , Robert B. Huston , Joseph M. Wong
摘要： Sorbent compositions, comprising a solid sorbent, a dispersive agent, and optionally a capture agent for enhanced wet-Flue Gas Desulfurization (wFGD) or wet scrubber unit function in a flue gas pollutant control stream is disclosed. The sorbent composition may include a sorbent with a dispersive agent, designed to enhance the dispersion of the sorbent in an aqueous sorption liquid of a wet scrubber unit, and therefore may be especially useful in EGU or industrial boiler flue gas streams that include one or more wet scrubber units. The sorbent composition may also include a capture agent useful in sequestering mercury and bromine, as well as other contaminants that may include arsenic, selenium and nitrates.
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公开(公告)号：US20230050756A1
公开(公告)日：2023-02-16
申请号：US17880533
申请日：2022-08-03
摘要： An emissions clean-up process is provided to remove detrimental exhaust gases from a fossil fuel power plant and to produce and/or reclaim various useful commercial byproducts. The process includes mixing a blended liquid solution with a solubilizer in a mixing tank to create a chemical reaction therein to produce an ionic solid and an alkaline liquid solution. By mixing various blended solutions with desired solubilizers, alkaline liquids are produced which may be chemically combined to create other byproducts or sold commercially. Likewise, the alkaline liquids may be passed through a wet scrubber to create a byproduct that when chemically mixed with an acid creates desired byproducts. Other byproducts such as a sodium bicarbonate liquid solution exits the wet scrubber and is sold or used in the subject process to produce various other byproducts.
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公开(公告)号：US20230038873A1
公开(公告)日：2023-02-09
申请号：US17892006
申请日：2022-08-19
发明人： Adeniyi Lawal , Lin Zhou
摘要： Process and apparatus (10) are disclosed for capturing and converting an ozone-depleting alkyl halide fumigant from a fumigant/air mixed stream (14) by absorbing it into a metal hydroxide-alcohol buffer solution (26) in an absorber/scrubber (12) to produce a fumigant-free air stream (28). The captured alkyl halide in aqueous alcohol solution can actively react with the metal hydroxide in alcohol solution to produce a value-added product, such as a precipitate metal halide, and another alcohol that further enhances absorption. The absorbing solution is well-mixed with make-up alcohol and alkali streams to maintain the concentration of the metal hydroxide in the desired buffer solution range. The solid precipitate metal halide (52) is separated from the liquid stream, and the metal hydroxide-containing mixed alcohol stream (26) is recycled to the absorber/scrubber (12).
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公开(公告)号：US20230038193A1
公开(公告)日：2023-02-09
申请号：US17937619
申请日：2022-10-03
摘要： Methods and systems for reducing greenhouse gas emissions, including producing a waste gas stream comprising form greater than 0 vol % to less than 20 vol %, inclusive, carbon dioxide, pre-concentrating the waste gas stream to increase a concentration of carbon dioxide, producing a concentrated byproduct stream comprising more than 40 vol %, dissolving carbon dioxide contained in the concentrated byproduct stream in water, producing a dissolved byproduct stream and an undissolved byproduct stream, injecting the dissolved byproduct stream or a portion thereof into a reservoir containing mafic rock, and allowing components of the dissolved byproduct stream to react in situ with components of the mafic rock to precipitate and store components of the byproduct stream in the reservoir.
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公开(公告)号：US11559766B2
公开(公告)日：2023-01-24
申请号：US17552676
申请日：2021-12-16
发明人： Xijia Lu , Brock Alan Forrest , Miles R. Palmer
摘要： The present disclosure provides systems and methods useful in capture of one more moieties (e.g., carbon dioxide) from a gas stream (i.e., direct air capture). In various embodiments, the systems and methods can utilize at least a scrubbing unit, a regeneration unit, and an electrolysis unit whereby an alkali solution can be used to strip the moiety (e.g., carbon dioxide) from the gas stream, the removed moiety can be regenerated and optionally purified for capture or other use, and a formed salt can be subjected to electrolysis to recycle the alkali solution back to the scrubber for re-use with simultaneous production of one or more further chemicals.
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公开(公告)号：US20220411701A1
公开(公告)日：2022-12-29
申请号：US17857084
申请日：2022-07-04
申请人： GAPS Technology, LLC
发明人： Cliffton Lee ROE , Linda SCHWEITZER
摘要： A treatment process for remediating; contaminants in a mixture of contaminated fluids, including at least one liquid fluid and at least one gaseous fluid, includes the steps of: preparing a treatment composition containing at least 80 volume % of an aqueous solution containing at least one hydroxide compound at a collective concentration of 35-55 weight percent, and at least one organic acid selected from the group consisting of fulvic acid and humic acid at a collective concentration of 0.1-5 wt % of the treatment composition; adding a dosage of the treatment composition to a mixture of contaminated fluids including a liquid portion and a gaseous portion; and allowing the treatment composition to react with the mixture of contaminated fluids for at least 10 minutes. A pH of the treatment composition is at least 12.0
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公开(公告)号：US11535515B2
公开(公告)日：2022-12-27
申请号：US16984463
申请日：2020-08-04
IPC分类号： C12P3/00 , C10L3/10 , C01B17/05 , C01B17/04 , B01D53/14 , B01D53/18 , B01D53/52 , B01D53/78 , B01D53/84
摘要： A method for recovering sulfur within a gas processing system is described herein. The method includes contacting a natural gas stream including an acid gas with a solvent stream within a co-current contacting system to produce a sweetened natural gas stream and a rich solvent stream including an absorbed acid gas. The method also includes removing the absorbed acid gas from the rich solvent stream within a regenerator to produce a concentrated acid gas stream and a lean solvent stream. The method further includes recovering elemental sulfur from hydrogen sulfide (H2S) within the concentrated acid gas stream via a sulfur recovery unit.
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公开(公告)号：US20220395764A1
公开(公告)日：2022-12-15
申请号：US17838297
申请日：2022-06-13
申请人： Koch-Glitsch, LP
发明人： David EWY , Darran HEADLEY , Erik LAYTON , Izak NIEUWOUDT , Patrick QUOTSON
摘要： A mass transfer column is provided in which a shell is formed of one or more side walls having an exoskeleton. The exoskeleton includes a plurality of vertical trusses joined together by crossing rails. An inner skin is supported by the vertical trusses and rails and, together with a top and bottom of the shell, defines an open internal region that may be pressurized and in which mass transfer process may occur. Horizontally extending beams that may be in the form of trusses span the open internal reaion and are supported by the exoskeleton. Internals such as structured packing may be supported on the horizontally extending beams.
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