Abstract: A method for removing impurities from a feed air gas stream prior to the stream being fed to a cryogenic distillation unit. The feed air gas stream contacts an ionic liquid which adsorbs the impurities from the air. The method can use one or more beds such as in pressure swing adsorption processes.

Abstract: A membrane contactor system for use in separating carbon dioxide from a gaseous stream in a continuous flow process comprising a housing defining a gas flow path and comprising a first outlet for the carbon dioxide and a second outlet for the purified gas; an expanded polytetrafluoroethylene microporous membrane positioned in the housing to allow the gaseous stream to flow across a side of the expanded polytetrafluoroethylene microporous membrane, the membrane having a plurality of interconnecting pores configured to allow the carbon dioxide to diffuse therethrough; an oleophobic enhancement coating disposed on the surfaces to form a coated membrane; and an amine based sorbent liquid disposed on a side of the expanded polytetrafluoroethylene microporous membrane opposite the gas, wherein the amine based sorbent liquid is configured to absorb the carbon dioxide from the gaseous stream.

Abstract: Ultra cleaning of combustion gas to near zero concentration of residual contaminants followed by the capture of CO2 is provided. The high removal efficiency of residual contaminants is accomplished by direct contact cooling and scrubbing of the gas with cold water. The temperature of the combustion gas is reduced to 0-20 degrees Celsius to achieve maximum condensation and gas cleaning effect. The CO2 is captured from the cooled and clean flue gas in a CO2 absorber utilizing an ammoniated solution or slurry in the NH3—CO2—H2O system. The absorber operates at 0-20 degrees Celsius. Regeneration is accomplished by elevating the pressure and temperature of the CO2-rich solution from the absorber. The CO2 vapor pressure is high and a pressurized CO2 stream, with low concentration of NH3 and water vapor is generated. The high pressure CO2 stream is cooled and washed to recover the ammonia and moisture from the gas.

Abstract: A method for removing acid gases from a fluid flow using an absorbent including an aqueous solution with at least two different amines. An amine in a proportion of greater than 50 wt. % of the total amine amount in the aqueous solution is the first amine component in the aqueous solution, and a sterically hindered amine in a proportion of less than 50 wt. % is the second amine component in the aqueous solution. The fluid flow is brought into contact with the absorbent at a partial pressure of <200 mbar.

Abstract: An improved acid gas regeneration and injection process wherein the separated acid gas stream emerging from a regenerator is compressed and injected into subsurface reservoir, the improvement comprising conducting the acid gas separation in the regenerator under pressure that exceeds 50 psia and does not exceed 300 psia.

Abstract: A power generation plant (112), a method, and a CO2 capture system (122) for removing carbon dioxide (104) from a flue gas stream (106) are disclosed. As shown in FIG. 2, a CO2 capture system (122), comprises an absorber vessel (202), a water wash vessel (210), and a stripper (214). The CO2 capture system (122) can be configured to introduce both a lean ionic ammonia solution (204) from a regeneration system (124) and a flue gas stream (106) from a cooling system (120) and to provide a rich ionic ammonia solution (206) to a regeneration system (124), wherein the introduction of the lean ionic ammonia solution (204) to the flue gas stream (106) produces a flue gas substantially devoid CO2 (224). The water wash vessel (210) can be configured to receive the flue gas substantially devoid CO2 (224) and produce ammoniated water (212) by introducing water (218) to the flue gas substantially devoid CO2 (224).

Abstract: The invention relates to a washing column (T) for implementing a physical gas washing. Gas (1) is sent from the bottom to the top and washing agent (2) is sent from the top to the bottom through the washing column. At least two washing sections (WS1, WS2) are arranged on top of one another in the washing column (T). The top section (WS2) is bounded at the bottom by a riser base (K), from which a portion of the washing agent that is charged into the top washing section can be introduced as washing agent into the lower washing section (WS1). Another portion of the washing agent can be removed from the washing column (T) via a lateral drain (4). The top washing section (WS2) is connected to the lower washing section (WS1) by an overflow (U), via which charged washing agent from the riser base (K) can be introduced into the lower washing section (WS1).

Abstract: A method for treating a gas mixture containing acid gases, including: contacting the gas mixture with an absorbing solution, to obtain a de-acidified gas mixture and an absorbing solution with acid gases. To regenerate the absorbing solution with acid gases, the absorbing solution is passed into a first regenerator at a first pressure, then the solution is passed into a second regenerator at a second pressure, and finally to a third regenerator at a third pressure, the third pressure being less than the second pressure which is less than the first pressure. The gases from the second and third regenerator are compressed and recycled to the first and second regenerator, respectively. Gases from the second and/or the third regenerator are drawn off to provide a gas mixture rich in hydrogen sulfide. Gases from the first regenerator are drawn off to provide a gas mixture rich in carbon dioxide.

Abstract: The present invention provides a novel piperazinium trifluoroacetate compound prepared by reacting piperazine with trifluoroacetic acid and a carbon dioxide absorbent prepared by dissolving the compound in an ionic liquid or organic solvent. According to the present invention, the carbon dioxide absorbent has excellent carbon dioxide absorption capacity and low solvent loss, and the energy consumption required for the carbon dioxide absorption and desorption is significantly reduced.

Abstract: The present invention relates to a carbon dioxide absorbent, an ionic liquid obtained by reacting amide and an organic acid and a method of using the same. The amidium-based ionic liquid of the present invention has excellent CO2 absorption capability, which is hardly reduced even with repeated use, is easy to synthesize and has low manufacturing cost thus being useful as a CO2 absorbent.

Abstract: Solvent absorption processes for separating components of an impure feed gas are disclosed. The processes involve two stages of gas-liquid contacting, namely a first, absorption stage and a second, stripping stage. In the case of a carbon dioxide (CO2)-containing methane gas as an impure feed gas, contacting, in the stripping stage, the solvent effluent from the absorption stage with a recycled vapor fraction of the solvent effluent from the stripping stage can improve the recovery and purity of not only the methane (and/or other light hydrocarbons in the impure feed gas), but also that of the CO2 contaminant gas.

Abstract: Disclosed is a gaseous fossil fuel fired, indirectly heated, Brayton closed cycle comprising an alkali metal seeded noble gases that is rendered non-equilibrium, electrically conducting in a magnetohydrodynamic (MHD) electric power generator with zero emissions from the combustion products, including physical separation and sequestration of the carbon dioxide (CO2) what is emitted from the fossil fuel, with said cycle combined with a Rankine steam turbine bottoming cycle to compress the noble gas, while another optional new or existing Rankine steam cycle is placed in parallel and separate from the MHD cycle, and it is fired by the solid char remaining if the MHD cycle is fired with the devolatilized coal, and/or with solid coal culm, and/or unburned carbon in coal power plant waste ash, in order to achieve high efficiency at low capital, low operating, and low fuel costs.

Abstract: Disclosed is a formulation for the absorption of CO2, which comprises water, at least one CO2 absorption compound and a carbonic anhydrase as an activator to enhance the absorption capacity of the CO2 absorption compound. The invention also concerns the use of carbonic anhydrase, in a CO2 absorption solution to increase the CO2 absorption rate of such solution.

Abstract: An improved process for the separation of carbon dioxide from the flue gas of an oxy-combustion power plant is provided. The flue gas is compressed, cleaned, cooled and dried. This clean, compressed dry flue gas is then further cooled, partially condensed and separated into liquid and vapor streams. The liquid streams, which contain a high concentration of carbon dioxide, are vaporized, compressed and exported to an end user. The vapor streams are heated and expanded, in order to extract useable energy. At least two expanders are used to extract this energy, with an intermediate warming step.

Abstract: Vapor-liquid contacting apparatuses comprising both a primary absorption zone and a secondary absorption zone comprising a plurality of vortex contacting stages are described. The apparatuses provide improved heat and mass transfer between vapor and liquid phases in processes such as absorption, to selectively solubilize contaminants (e.g., acid gases) from an impure vapor (e.g., sour natural gas). Vortex contacting stage(s) in a zone of vapor-liquid contacting, such as a secondary or finishing absorption zone, are used following bulk absorption in a primary or main absorption zone.

Abstract: A system and method for producing biofuel from pollutant-fed algae are disclosed. Specifically, the system includes a scrubber with a chamber for receiving a pollutant-contaminated fluid stream. Further, a scrubber solution is received in the chamber for scrubbing the pollutant-contaminated fluid stream. Also, the system includes a bioreactor that is provided with an input port to receive the scrubber solution with pollutants for use as nutrients to support algae cell growth. Further, the system includes an algae separator that removes the algae from the bioreactor and a device for processing the algae into biofuel. In order to recycle the scrubber solution, the algae separator is in fluid communication with the scrubber. With this arrangement, the effluence from the bioreactor may be recycled for use as the scrubber solution.

Abstract: Some embodiments described herein relate to ionic liquids comprising an anion of a heteraromatic compound such as optionally substituted pyrrolide, optionally substituted pyrazolide, optionally substituted indolide, optionally substituted phospholide, or optionally substituted imidazolide. Methods and devices for gas separation or gas absorption related to these ionic liquids are also described herein.

Abstract: A first contaminant selected from oxygen and carbon monoxide is removed from impure liquid carbon dioxide using a mass transfer separation column system which is reboiled by indirect heat exchange against crude carbon dioxide fluid, the impure liquid carbon dioxide having a greater concentration of carbon dioxide than the crude carbon dioxide fluid. The invention has particular application in the recovery of carbon dioxide from flue gas generated in an oxyfuel combustion process or waste gas from a hydrogen PSA process. Advantages include reducing the level of the first contaminant to not more than 1000 ppm.

Abstract: An absorbent composition for removing CO2 and/or H2S from a gas comprising a polyamine, a monoamine and water, wherein the polyamine comprises a polyamine having 3 to 5 amine functions and has a molecular weight of less than 200 g/mol; wherein the monoamine comprises a tertiary monoamine; and wherein the weight ratio of the polyamine having 3 to 5 amine functions to the tertiary monoamine is more than 1:1. A process wherein such an absorbent composition is used and a use of a tertiary monoamine as an accelerator for accelerating the removal of CO2 and/or H2S from a CO2 and/or H2S containing polyamine having 3 to 5 amine functions.

Abstract: In a system involving CO2 capture having an acid gas removal system to selectively remove CO2 from shifted syngas, the acid gas removal system including at least one stage, e.g. a flash tank, for CO2 removal from an input stream of dissolved carbon dioxide in physical solvent, the method of recovering CO2 in the acid gas removal system including: elevating a pressure of the stream of dissolved carbon dioxide in physical solvent; and elevating the temperature of the pressurized stream upstream of at least one CO2 removal stage.

Abstract: Method of producing syngas in an IGCC system, comprising compressing and heating carbon dioxide-rich gas to produce heated compressed carbon dioxide-rich gas, mixing the heated compressed carbon dioxide-rich gas with oxygen and feedstock to form a feedstock mixture, subjecting the feedstock mixture to gasification to produce syngas, cooling the syngas in a radiant syngas cooler, contacting syngas cooled in the radiant syngas cooler with compressed carbon dioxide-rich gas to further cool the syngas, and removing an amount of carbon dioxide-rich gas from the product mixture and compressing the removed carbon dioxide-rich gas prior to mixing with oxygen and feedstock.

Abstract: A fluid separation apparatus suitable for separating a mixed fluid with different properties and capable of separating a complex fluid mixture efficiently is provided. The fluid separation apparatus includes a sampling entrance, a first separation column, a second separation column, a bypass line, a detector and a guide multi-channel valve. A mixed fluid flows into the first separation column via the sampling entrance. The second separation column is connected to the first separation column in series and connected to the bypass line in parallel. The detector is connected to the second separation column and the bypass line. The guide multi-channel valve has different modes to control a flow-through status and a closed status between the first separation column and the second separation column, between the first separation column and the bypass line, between the second separation column and the detector, and between the bypass line and the detector.

Abstract: Novel solvent composition for selective removal of COS from a gas stream containing same, said composition comprising a) at least one polyalkylene glycol alkyl ether of the formula R1O-(Alk-O)n—R2??(I) or 1,3-dimethyl-3,4,5,6-tetrahydro-2(1H)-pyrimidinone or a mixture of N-formylmorpholine and N-acetylmorpholine wherein R1 is an alkyl group having from 1 to 6 carbon atoms; R2 is hydrogen or an alkyl group having from 1 to 4 carbon atoms; Alk is an alkylene group, branched or unbranched, having from 2 to 4 carbon atoms, and n is from 1 to 10; and b) at least one alkanolamine compound of the formula R3NHR4OR6??(II) or at least one piperazine compound of formula wherein R3 is hydrogen, an alkyl group having from 1 to 6 carbon atoms, or the R4OH group; R4 is a branched or unbranched alkylene group having from 1 to 6 carbon atoms; R5, independently in each occurrence, is hydrogen or an hydroxyalkyl group having from 1 to 4 carbon atoms; and R6 is hydrogen, an alkyl group having from 1

Abstract: An absorbent liquid according to the present invention is an absorbent liquid for absorbing CO2 or H2S or both from gas, in which the absorbent liquid includes an alkanolamine as a first compound component, and a second component including a nitrogen-containing compound having in a molecule thereof two members or more selected from a primary nitrogen, a secondary nitrogen, and a tertiary nitrogen or a nitrogen-containing compound having in a molecule thereof all of primary, secondary, and tertiary nitrogens. The absorbent liquid has an excellent absorption capacity performance and an excellent absorption reaction heat performance, as compared to an aqueous solution containing solely an alkanolamine and a nitrogen-containing compound in the same concentration in terms of wt %, and can recover CO2 or H2S or both from gas with smaller energy.

Abstract: A method for separating methane and carbon dioxide from biogas and a device are intended for purifying biogas, wherein carbon dioxide is separated off from the biogas. The method is distinguished by an energetically favorable mode of operation. The biogas is passed under atmospheric pressure and standard temperature into an absorption column. While the biogas ascends through a packed bed, which has a surface area of 600 to 1200 m2/m3, and at a space velocity of 5 to 40 Nm3/m3h, carbon dioxide present in the biogas is bound in a wash liquid by chemosorption. The purified methane gas is taken off at the top of the absorption column at a defined flow velocity. Carbon dioxide bound in the wash liquid is removed by desorption at a relatively high pressure of 2 to 30 bar and a temperature of at least 120° C. Biogas may be separated into methane and CO2.

Abstract: A process for the absorption of one or more gas(es) selected from the group consisting of carbon dioxide, hydrogen sulfide, sulfur oxides, nitrogen oxides and carbon monoxide from a fluid, the process including: providing a fluid containing the selected gas(es); and an ionic liquid absorbent, the absorbent including the components: one or more anions; one or more metal species; and optionally one or more organic cations; and optionally one or more ligands; the absorbent components being selected such that the absorbent is in a liquid state at the operating temperature and pressure of the process; with the provisos that: when the anion contains in the same molecular entity: both an amine functional group and a sulfonate functional group; both an amine functional group and a carboxylate functional group; both a phosphine functional group and a sulfonate functional group; or both a phosphine functional group and a carboxylate functional group, the metal species is not an alkali metal or alkaline earth metal; the

Abstract: A CO2 reducing system (10A) is constituted by a low-temperature CO2 reducing apparatus (11-1) that includes a low-temperature absorber (1006-1) that reduces at least one of CO2 and H2S by bringing flue gas (1002) including at least one of CO2 and H2S into contact with a low-temperature absorbing solution (1005-1), a low-temperature regenerator (1008-1) that regenerates a low-temperature rich solution (1007-1), a low-temperature rich-solution supply line (12-1) that feeds the low-temperature rich solution (1007-1) to the low-temperature regenerator (1008-1), and a low-temperature lean-solution supply line (13-1) that feeds a low-temperature lean solution (1009-1) to the low-temperature absorber (1006-1) from the low-temperature regenerator (1008-1); and a high-temperature CO2 reducing apparatus (11-2) that is arranged on a side at which the flue gas (1002) is discharged, and that has the same configuration as the low-temperature CO2 reducing apparatus (11-1).

Abstract: Novel solvent composition for selective removal of COS from a gas stream containing same, said composition comprising a) at least one polyalkylene glycol alkyl ether of the formula R1O-(Alk-O)n—R2??(I) or 1,3-dimethyl-3,4,5,6-tetrahydro-2(1H)-pyrimidinone or a mixture of N-formylmorpholine and N-acetylmorpholine wherein R1 is an alkyl group having from 1 to 6 carbon atoms; R2 is hydrogen or an alkyl group having from 1 to 4 carbon atoms; Alk is an alkylene group, branched or unbranched, having from 2 to 4 carbon atoms, and n is from 1 to 10; and b) at least one alkanolamine compound of the formula R3NHR4OR6??(II) or at least one piperazine compound of formula wherein R3 is hydrogen, an alkyl group having from 1 to 6 carbon atoms, or the R4OH group; R4 is a branched or unbranched alkylene group having from 1 to 6 carbon atoms; R5, independently in each occurrence, is hydrogen or an hydroxyalkyl group having from 1 to 4 carbon atoms; and R6 is hydrogen, an alkyl group having from 1

Abstract: Methods of using microchannel separation systems including absorbents to improve thermal efficiency and reduce parasitic power loss. Energy is typically added to desorb a solute and then energy or heat is removed to absorb a solute using a working solution. The working solution or absorbent may comprise an ionic liquid, or other fluids that demonstrate a difference in affinity between a solute and other gases in a solution.

Abstract: An Apparatus for purifying a feed stream containing carbon dioxide in which the feed stream, after having been compressed and dried, is partly cooled and then used to reboil a stripping column. Thereafter, the feed stream is further cooled and expanded to a lower operational temperature of the stripping column. A carbon dioxide product stream composed of the liquid column bottoms of the stripping column is expanded at one or more pressures to generate refrigeration, then fully vaporized within the main heat exchanger and compressed by a compressor to produce a compressed carbon dioxide product. Refrigeration is recovered in the main heat exchanger from a column overhead stream extracted from the stripping column within the main heat exchanger either directly or indirectly by auxiliary processing in which carbon dioxide is further separated and optionally recycled back to the main compressor used in compressing the feed stream.

Abstract: The invention relates to a gas liquid contactor and effluent cleaning system and method and more particularly to an array of nozzles configured to produce uniformly spaced flat liquid jets with reduced linear stability. An embodiment of the invention is directed towards a stability unit used with nozzles of a gas liquid contactor and/or an enhancer for stable jet formation, and more particularly to reducing the stability of liquid jets formed from nozzles of the gas liquid contactor. Another aspect of the invention relates to operating the apparatus at a condition that reduces the stability of liquid jets, e.g., a droplet generator apparatus. Yet another aspect of the invention relates to operation of the apparatus with an aqueous slurry. Still another aspect of the invention is directed towards to an apparatus for substantially separating at least two fluids.

Abstract: A process and system for separating CO2 from a flue gas stream is disclosed. The process involves (a) contacting a flue gas stream containing water vapor and CO2 with an ionic absorbent under absorption conditions to absorb at least a portion of the CO2 from the flue gas stream and form a CO2-absorbent complex; wherein the ionic absorbent comprises a cation and an anion comprising an amine moiety; and (b) recovering a gaseous product having a reduced CO2 content.

Abstract: The invention involves a process for maintaining a low level of carbon monoxide in a carbon dioxide product stream and also for keeping the carbon monoxide out of the fully shifted synthesis gas. The overall process is a process for treating both fully shifted and partially shifted or unshifted synthesis gas. The carbon monoxide is separately removed by a carbon monoxide stripping column and returned to the partially shifted or unshifted synthesis gas which can then undergo a shift reaction to convert the carbon monoxide to carbon dioxide.

Abstract: The present invention relates to a method of deacidizing a gaseous effluent, wherein the following stages are carried out: a) contacting the gaseous effluent with an absorbent solution so as to obtain a gaseous effluent depleted in acid compounds and an absorbent solution laden with acid compounds, the absorbent solution being selected for its property to form two separable phases when it absorbs an amount of acid compounds, b) separating the absorbent solution laden with acid compounds into two fractions: a first absorbent solution fraction depleted in acid compounds and a second absorbent solution fraction enriched in acid compounds, c) regenerating the second fraction so as to release part of the acid compounds, d) mixing a predetermined amount of water with the first absorbent solution fraction obtained in stage b) or with the regenerated absorbent solution fraction obtained in stage c), then e) recycling the first absorbent solution fraction and the regenerated absorbent solution as the absorbent solu

Abstract: A separator scrubber (58) and isolation loop (78) decontaminates a fuel reactant stream of a fuel cell (12). Water passes over surfaces of an ammonia dissolving means (61) within the scrubber (58) while the fuel reactant stream simultaneously passes over the surfaces to remove contaminants from the fuel reactant into the water. An accumulator (68) collects the separated contaminants and water, and an isolation loop pump (84) directs flow of the separated contaminant stream through the isolation loop (78). A heat exchanger (86) and an ion exchange bed (88) modify the heat of, and remove contaminants from, the separated contaminant stream, and the isolation loop (78) directs the decontaminated stream back onto the packed bed (62)-. Separating contaminants from the fuel reactant stream and then isolating and concentrating the separated contaminants within the ion exchange bed (88) minimizes cost and maintenance requirements.

Abstract: A method for processing pre-combustion syngas includes, in an exemplary embodiment, providing an absorber unit having a membrane contactor having a plurality of micro-pores, channeling pre-combustion syngas along a first surface of the membrane contactor, channeling an amine based solvent along a second opposing surface of the membrane contactor, and contacting the solvent with the syngas such that the solvent and the syngas contact at gas-liquid interface areas, defined by the plurality of micro-pores in the membrane contactor, to separate CO2 from the flue gas by a chemical absorption of CO2 into the solvent to produce a solvent containing CO2.

Abstract: An air pollution control apparatus according to an embodiment of the present invention includes: a stack that discharges flue gas discharged from a boiler outside; a blower that is provided downstream of the stack and draws in the flue gas; and a CO2 recovering apparatus that recovers CO2 in the flue gas drawn in by the blower. The stack includes a controlling unit that suppresses release of the flue gas outside from the stack and suppresses inflow of atmosphere to the stack, and the controlling unit is a channel forming unit that forms a serpentine channel through which the flue gas and the atmosphere in the stack flow.

Abstract: Disclosed is a formulation for the absorption of CO2, which comprises water, at least one CO2 absorption compound and a carbonic anhydrase as an activator to enhance the absorption capacity of the CO2 absorption compound. The invention also concerns the use of carbonic anhydrase, in a CO2 absorption solution to increase the CO2 absorption rate of such solution.

Abstract: A system (10) for regenerating a rich absorbent solution (26), the system including: an absorber (20) facilitating interaction between a process stream (22) and an absorbent solution, wherein the process stream comprises an acidic component, and interaction of the process stream with the absorbent solution produces a reduced acidic component stream (28) and a rich absorbent solution; at least one heat exchanger accepting at least one of said reduced acidic component stream and the process stream to transfer heat to a heat transfer fluid (60); and at least one mechanism (60a) to transfer the heat transfer fluid from said at least one heat exchanger to a regenerator (34) regenerating the rich absorbent solution, wherein each of the at least one mechanisms is fluidly coupled to each of the at least one heat exchangers.

Abstract: A method of use of an ionic liquid for sorption of a gas having an electric multipole moment is provided, wherein the ionic liquid comprises an anion and a non-aromatic cation. In particular, the electric multipole moment may be an electric dipole moment and/or an electric quadrupole moment. The sorption may be an adsorption or an absorption. The ionic liquid may be a pure ionic liquid, i.e. a liquid substantially only containing anions and cations, while not containing other components, e.g. water. Alternatively a solution containing the ionic liquid and a solvent or further compound, e.g. water, may be used.

Abstract: An ammonia based CO2 capture system and method is provided in which multiple absorption stages are provided. Each absorption stage delivers an ionic solution at a predetermined temperature and contacts it with a flue gas stream.

Abstract: According to an exemplary aspect of the invention a method of sorption of CO2 out of flue gas is provided, wherein the method comprises contacting the flue gas and an ionic liquid comprising an anion and a non-aromatic cation.

Abstract: A gas separation process for treating exhaust gases from the combustion of gaseous fuels, and gaseous fuel combustion processes including such gas separation. The invention involves routing a first portion of the exhaust stream to a carbon dioxide capture step, while simultaneously flowing a second portion of the exhaust gas stream across the feed side of a membrane, flowing a sweep gas stream, usually air, across the permeate side, then passing the permeate/sweep gas back to the combustor.

Abstract: The invention relates to a method as well as a device for separation of a carbon-dioxide-containing gas mixture (1), whereby carbon dioxide is separated from the carbon-dioxide-containing gas mixture (1) by physical gas washing (W1) and is converted into two product streams (3, 4) that consist primarily of carbon dioxide and have different pressures, and in the event of an operational breakdown, after their pressures are balanced, said product streams are subjected to an after-treatment step (W2) and then are released into the atmosphere. For balancing the pressures of the two carbon dioxide product streams (3, 4), the carbon dioxide stream (3, 7) that has the lower pressure is compressed by means of a gas jet ventilator (G), whereby the carbon dioxide stream (4) that has the higher pressure is used as a pumping medium (6).

Abstract: Scrubbing systems and methods for removing carbon dioxide from a gas are provided. The scrubbing system can include a scrubber defining a vertically oriented tubing assembly, a gas inlet and a gas outlet. The tubing assembly has a tank section, a reduced diameter section, and an expansion section such that the expansion section is positioned above the reduced diameter section and the reduced diameter section is positioned above the tank section. An aqueous liquid-phase scrubbing media is contained within the tank section. The scrubbing system can further include a water bath configured to receive the CO2-free gas exiting the scrubber.

Abstract: A method and system for CO2 capture from flue gas uses an absorber vessel in which a flue gas stream containing CO2 is contacted with an ammoniated solution to remove CO2 from the flue gas, and a regenerator vessel in which CO2 is released from the ammoniated solution. Parasitic energy consumption of the system can be reduced by adding to the ammoniated solution a promoter effective to enhance the formation of ammonium bicarbonate within the ammoniated solution. The amount of ammoniated solution recycled from the regenerator vessel to the absorber vessel is less than that which would be required using the ammoniated solution without the promoter for removal of the same amount of CO2 from the flue gas.

Abstract: Hindered cyclic polyamines and their salts are absorbents useful in acid gas treatment processes.

Abstract: An absorbing solution according to the present invention is an absorbing solution that absorbs CO2 or H2S in gas or both of CO2 and H2S. The absorbing solution is formed by adding desirably 1 to 20 weight percent of tertiary monoamine to a secondary-amine composite absorbent such as a mixture of secondary monoamine and secondary diamine. Consequently, it is possible to control degradation in absorbing solution amine due to oxygen or the like in gas. As a result, it is possible to realize a reduction in an absorption loss, prevention of malfunction, and a reduction in cost. This absorbing solution is suitably used in an apparatus for removing CO2 or H2S or both of CO2 and H2S.

Abstract: Systems and methods for lowering levels of carbon dioxide and other atmospheric pollutants are provided. Economically viable systems and processes capable of removing vast quantities of carbon dioxide and other atmospheric pollutants from gaseous waste streams and sequestering them in storage-stable forms are also discussed.

Abstract: A CO2 recovery system includes an absorption tower and a regeneration tower. CO2 rich solution is produced in the absorption tower by absorbing CO2 from CO2-containing gas. The CO2 rich solution is conveyed to the regeneration tower where lean solution is produced from the rich solution by removing CO2. A reclaimer heats the lean solution that is produced in the regeneration tower to produce a condensed waste-product from the lean solution by condensing a depleted material contained in the lean solution, and removes the condensed waste-product. A cooler cools the condensed waste-product.