Abstract: A CO2 recovery unit for recovery and removal of CO2 in a CO2-containing flue gas using a CO2-absorbent within a CO2 absorber is provided. The CO2 absorber includes a CO2-absorbing unit for the absorption of CO2 in a CO2-containing flue gas, a main water rinsing unit that is provided on a gas flow downstream side of the CO2-absorbing unit and that uses rinsing water to recover the accompanying CO2-absorbent while cooling decarbonated flue gas, and a preliminary water rinsing unit provided between the CO2-absorbing unit and the main water rinsing unit. A portion of the rinsing water containing the CO2-absorbent that is circulated in the main water rinsing unit is withdrawn and is subjected to preliminary water rinsing in the preliminary water rinsing unit. The preliminary rinsing water is allowed to meet with a CO2-absorbent while allowing the rinsing water to directly flow down on the CO2-absorbing unit side.

Abstract: An absorption-type carbon dioxide removal/condensing apparatus is removes or condenses carbon dioxide so that the apparatus secures high recovery efficiency. The apparatus has a honeycomb rotor holding a carbon dioxide absorbent, which is divided into at least a processing zone and a reproduction zone. After anyone of reproduction air for heating and a processing air is humidified by a humidifying device, both airs are ventilated into the zones, respectively. Thereby, the apparatus can improve absorption performance and density performance. If the honeycomb rotor is further divided into at least first and second processing zones, an air to be processed is humidified by a humidifier to ventilate into the first processing zone, and then a portion or all of the processing air which passed through the first procession zone is passed through the second procession zone (second pass).

Abstract: The invention generally relates to processes for reducing and removing foulant and foulant precursors from regenerated amine mixtures and to equipment useful in such processes. Such amine mixtures are useful for removing one or more acidic gases such as CO2 or H2S from olefin hydrocarbon streams. A first feed comprising regenerated amine, foulant, and foulant precursors is provided. A second feed comprising aromatic hydrocarbons is provided. The first and second feeds are combined and then separated to form first and second products. The first product is an upgraded regenerated amine mixture that comprises the first feed's amine. The second product comprises second feed's aromatic hydrocarbons and a portion of the first feed's foulant.

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: A CO2 recovery system includes an absorption tower that brings gas containing CO2 into contact with a CO2 absorption solution to remove CO2 from the CO2-containing gas; a regeneration tower that regenerates a CO2-absorbed rich solution; and a compression device that re-uses a lean solution, from which CO2 has been removed in the regeneration tower, in the absorption tower and compresses CO2 in gas emitted from the regeneration tower, wherein the rich solution has a high pressure, the high-pressure rich solution is subjected to gas-liquid separation by a flash drum, the rich solution as a liquid component separated in the flash drum is introduced into the regeneration tower, and high-pressure CO2 gas as a gas component separated in the flash drum is introduced into a compression device having a predetermined compression pressure.

Abstract: The present invention is directed to aminosilicone solvent recovery methods and systems. The methods and systems disclosed herein may be used to recover aminosilicone solvent from a carbon dioxide containing vapor stream, for example, a vapor stream that leaves an aminosilicone solvent desorber apparatus. The methods and systems of the invention utilize a first condensation process at a temperature from about 80° C. to about 150° C. and a second condensation process at a temperature from about 5° C. to about 75° C. The first condensation process yields recovered aminosilicone solvent. The second condensation process yields water.

Abstract: The present disclosure provides methods and apparatuses of recovering CO2 from a gas stream. The methods regenerate CO2 with high regeneration efficiencies, thereby lowering the overall energy cost for CO2 capture.

Abstract: A process of forming a building product can include providing a first layer having a first material, and providing a second layer having a second material that different from the first material, wherein the second layer has pores. The process can further include infiltrating a fluid into the pores of the second layer while the first layer is present and adjacent to the second layer, wherein the fluid includes a carbonate. The process can still further include reacting the carbonate with a metal compound within the second layer to form a metal carbonate within the second layer. In another aspect, a building product can include a first layer having a first material, and a second layer having a second material and a third material that includes a metal carbonate. The first material can be different from the second material, and the second and third materials can include the same metal element.

Abstract: A degradant concentration measurement device 14 according to the invention has an electric conductivity measurement instrument 71A measuring the electric conductivity of a lean solution 16 that is an acidic gas-absorbing solution and detection means 72 obtaining the concentration of a degradant contained in a lean solution 16 from the measured electric conductivity of the lean solution 16 based on the relationship between the previously-obtained electric conductivity of the lean solution 16 and the concentration of the degradant contained in the lean solution 16.

Abstract: A method for treating liquefied hydrocarbons comprising acid gases to remove said gases while minimizing loss of amine species, the method comprising the step of contacting the liquefied hydrocarbons with an absorbent aqueous solution of a first amine compound, the first amine compound having the structure: wherein R1 and R2 may each individually be hydrogen, methyl, ethyl, n-propyl, i-propyl, n-butyl, s-butyl, 2-hydroxyethyl or propane-2,3-diol.

Abstract: A polarity swing-assisted regeneration (PSAR) process is disclosed for improving the efficiency of releasing gases chemically bound to switchable ionic liquids. Regeneration of the SWIL involves addition of a quantity of non-polar organic compound as an anti-solvent to destabilize the SWIL, which aids in release of the chemically bound gas. The PSAR decreases gas loading of a SWIL at a given temperature and increases the rate of gas release compared to heating in the absence of anti-solvent.

Abstract: Promoter amines are used to enhance CO2 uptake by sterically hindered or tertiary amines. The promoter amines can be cyclic amines, including aromatic cyclic amines or bridged cyclic amines. The combination of a promoter amine plus a sterically hindered or tertiary amines allows for improved uptake kinetics while reducing or minimizing the amount of formation of carbamate salts. The promoted sterically hindered or tertiary amines can be used as part of a CO2 capture and release system that involves a phase transition from a solution of amine-CO2 products to a slurry of amine-CO2 precipitate solids.

Abstract: A device and method for separating off carbon dioxide is provided, including an absorption unit, desorption unit assigned thereto and a separation unit for separating off salts from a scrubbing solution. The absorption and desorption units are connected to each other via a first conduit for a regenerated scrubbing solution and a second conduit for a loaded scrubbing solution. The separation unit includes a crystallizer for forming salt crystals and a first separator unit on the downstream side for separating off salt crystals. A separation unit is provided for separating off salts from a scrubbing solution, having a crystallizer and a first separator unit downstream thereof. The crystallizer has a crystallization chamber for forming salt crystals and a countercurrent classifier for separating salt crystals according to particle size. A first branch conduit is connected to the crystallization chamber, which opens out into the countercurrent classifier via a second separator unit.

Abstract: A method for separating off carbon dioxide from a gas mixture, in particular from breathing air, with a life-sustaining device, wherein in a first method step the gas mixture is fed to an adsorption and/or absorption unit under at least one first pressure, and in a second method step a gas mixture is conveyed out of the adsorption and/or absorption unit under at least one second pressure that is higher than the first pressure.

Abstract: An absorption column 1 for separating CO2 and a second acid gas from a gas stream, the column comprising a first and second section (4, 5) for the absorption of CO2 and the second acid gas; a solvent inlet in the second section for the addition of liquid stream 3 including an absorbent liquid for CO2 and the second acid gas; a gas inlet (21) in the first section for the addition of a gas stream (2) containing CO2 and the second acid gas; a gas outlet (15) in the second section of the column; a first solvent outlet (22) for the removal of at least a portion of the solvent (6) from the second section of the column and a second solvent outlet (23) for solvent stream (11) from the first section of the column; and a liquid flow distributor arrangement (8) to allow a portion of the solvent to flow from the second section of the column to the first section. A method of operating the apparatus and method of solvent extraction is also disclosed.

Abstract: In various aspects, a method for producing electricity by operating two or more turbines in series is provided. The method can include introducing, at least part of, the exhaust from an upstream turbine into a combustion chamber of a downstream turbine. In one aspect, exhaust from the upstream turbine is introduced into the downstream turbine's combustion chamber via the downstream turbine's compression chamber.

Abstract: Technical system (2; 2?), method and uses for dosing of at least one liquid treatment means (12) into injection water (16) to an injection well (22), wherein the technical system (2; 2?) comprises: —an underwater line (14; 14?) for transport of the injection water (16) from a shipment site (20; 48) for the injection water (16); and —at least one liquid-tight storage unit (10) containing the at least one liquid treatment means (12). The distinctive characteristic is that the at least one storage unit (10) is structured as a volumetrically flexible unit; —wherein said storage unit (10) is placed under water (6); and —wherein said storage unit (10) is connected, in a flow-communicating manner, to the underwater line (14; 14?) for dosing of liquid treatment means (12) into the injection water (16) to the injection well (22).

Abstract: A method for drying natural gas or other industrial gases is disclosed in which such gas streams are dehydrated to very low water dew points using a dry liquid desiccant. The method comprises a continuous process with the liquid desiccant regenerated to by heating and the use of a stripping agent to provide two levels of regeneration which are used in sequential contacting of the gas stream. This disclosure reduces energy and capital costs relative to existing methods.

Abstract: The method of removing acid compounds contained in a gaseous effluent consists in contacting in column C1 a gaseous effluent with an absorbent solution 4 made up of an aqueous solution of one or more diamines belonging to the bis(amino-3-propyl)ether or (amino-2-ethyl)-(amino-3-propyl)ether family.

Abstract: An acid gas absorbent of which recovery amount of acid gas such as carbon dioxide is high, and an acid gas removal device and an acid gas removal method using the acid gas absorbent are provided. The acid gas absorbent of the embodiment comprising at least one type of tertiary amine compound represented by the following general formula (1). (In the above-stated formula (1), either one of the R1, R2 represents a substituted or non-substituted alkyl group of which carbon number is 2 to 5, and the other one represents a substituted or non-substituted alkyl group of which carbon number is 1 to 5. The R3 represents a methyl group or an ethyl group, and the R4 represents a hydroxyalkyl group. The R1, R2 may either be the same or different, and they may be coupled to form a cyclic structure.

Abstract: A combustion exhaust gas treatment system comprising: a heat exchanger (A) for recovering heat contained in the combustion exhaust gas into heat medium, an absorption column for obtaining CO2 removed gas by absorbing CO2 in the combustion exhaust gas into absorbent, a heat exchanger (B) for applying heat recovered by heat medium to the CO2 absorbed absorbent, a desorption column for desorbing the absorbent by removing CO2 from the CO2 absorbed absorbent, a flash tank for flash vaporizing the desorbed absorbent and a heat exchanger (E) for transferring heat from the desorbed absorbent to the CO2 absorbed absorbent, wherein the CO2 absorbed absorbent can be supplied from the absorption column to the desorption column via the heat exchanger (E) and the heat exchanger (B) in this order, and the desorbed absorbent can be supplied from the desorption column to the absorption column via the flash tank and the heat exchanger (E) in this order.

Abstract: A high cyclic capacity carbon dioxide scrubbing process contacts a gas stream containing carbon dioxide in a sorption zone with a liquid scrubbing solution of a low molecular weight sterically hindered amine, particularly a secondary alkanolamine or aminoether at a high concentration, typically at least 3.5M and at a temperature of at least 30° C. to sorb the carbon dioxide into the solution and form a rich stream of the sorbed carbon dioxide in the solution in the form of dissolved amine carbamate and/or alkanolamine bicarbonate. The rich stream is then passed from the sorption zone to at least one regeneration zone and the sorbed carbon dioxide is desorbed as gas from the solution to form a lean solution containing a reduced concentration of sorbed carbon dioxide relative to the rich stream; the lean stream is then returned to the sorption zone for a further sorption cycle.

Abstract: A method for capturing CO2 from a CO2 containing gas (1), such as en exhaust gas from a thermal power plant fired on carbonaceous fuel, or any other CO2 containing industrial gas, where CO2 is captured from the gas by causing the gas to flow counter current to a CO2 absorbing solvent introduced into a CO2 absorption section (3) in an absorber (2) so that CO2 present in the gas is absorbed by the CO2 absorbing solvent to form a CO2 rich solvent (5), where CO2 rich solvent is collected on the bottom of the of the absorption column and withdrawn for regeneration, and where the treated exhaust gas (8) is released to the atmosphere after being subjected to one or more washing step(s) (6,7), wherein the temperature of the CO2 absorbing solvent (4) introduced into the CO2 absorption section has a temperature that is less than 5° C. lower than the maximum temperature in the absorption section of the absorber, is described.

Abstract: Compositions for chemically removing sulfur deposits from reservoir formations, production tubing, flow lines, and other production equipment due to the production of sour gas and/or oil including reaction products of diamines and aldehydes at a mole ratio between about 1:1 and about 1:6, and methods for making and using same.

Abstract: A method for eliminating or substantially reducing emission of amines (amineslip) and alkaline degradation products to the atmosphere from a plant for CO2 capture from a flue gas, where the CO2 is captured by counter-current flow to an absorbent in an absorption zone, the absorbent comprising an aqueous solution of one or more amine(s), to give a CO2 lean flue gas that is released into the surroundings, and a CO2 rich absorbent that is regenerated in a regeneration column to give a CO2 rich gas that is treated further, and regenerated absorbent that is recycled to the absorption zone, wherein the CO2 lean flue gas is washed with an acidic aqueous solution to remove or substantially reduce the amount of amine(s) and alkaline degradation products thereof in the gas, is described.

Abstract: A process involving membrane-based gas separation and power generation, specifically for controlling carbon dioxide emissions from gas-fired power plants. The process includes a compression step, a combustion step, and an expansion/electricity generation step, as in traditional power plants. The process also includes a sweep-driven membrane separation step and a carbon dioxide removal or capture step. The carbon dioxide removal step is carried out on a portion of gas from the compression step.

Abstract: The invention relates to a method for reducing the CO2 content of a gas by contacting the gaseous effluent to be treated with an absorbent that contains a CO2 trapping agent in the impregnated state on a substrate made of a solid composite material (M) containing a polymer (P) and a compound (C) selected from mineral oxides, silico-aluminates, and activated carbon, wherein said material (M) has an average particle size (D50) higher than or equal to 100 ?m, and a pore space (Vd1) defined by pores having a diameter of between 3.6 and 1000 nm and which is at least 0.2 cm3/g. The invention also relates to specific absorbents used in said method.

Abstract: The present invention provides a carbon dioxide absorbing solution capable of preventing production of an oxidization degradation product of alkanolamine, that is, BICINE. The carbon dioxide absorbing solution contains an alkanolamine and a sulfur amino acid represented by the formula (1) or (2).

Abstract: A process for selectively removing hydrogen sulphide relative to carbon dioxide from a gaseous mixture containing at least hydrogen sulphide H2S and carbon dioxide CO2, includes a step of contacting the gaseous mixture with an absorbent solution including at least one amine, water, and at least one C2 to C4 thioalkanol. A use of the absorbent solution for selectively removing hydrogen sulphide relative to carbon dioxide from a gaseous mixture containing at least hydrogen sulphide and carbon dioxide, is disclosed. Disclosed is a use of at least one C2 to C4 thioalkanol as an additive in an absorbent solution including at least one amine, and water, for increasing the selectivity of the absorbent solution for the removal of hydrogen sulphide relative to carbon dioxide from a gaseous mixture containing at least hydrogen sulphide and carbon dioxide.

Abstract: A washing solution for the absorption of carbon dioxide is provided. A method for separating carbon dioxide out of a flue gas of an incineration plant is also provided, wherein at least one alkali metal oxide is added as an oxidation agent for nitrites to a washing solution having an amine-containing absorption agent, the flue gas is brought into contact with the washing solution prepared in this manner and the contained carbon dioxide is absorbed, and wherein the washing solution is then heat-treated and the carbon dioxide is desorbed. A corresponding washing solution having an amine-containing absorption agent and having at least one alkali metal oxide as an oxidation agent for nitrites is also provided.

Abstract: In a carbon dioxide recovery method including a carbon dioxide absorption step of bringing a gas to be treated containing carbon dioxide into contact with a carbon dioxide absorbing liquid, thereby removing carbon dioxide from the gas to be treated, and a regeneration step of removing carbon dioxide from a rich solution that has absorbed carbon dioxide in the carbon dioxide absorption step, thereby achieving regeneration, the rich solution that has absorbed carbon dioxide is guided in liquid form to a membrane separation apparatus (5) that is selectively permeable to carbon dioxide and equipped with a zeolite membrane for carbon dioxide separation, carbon dioxide is separated and removed by a pervaporation method, and the carbon dioxide absorbing liquid is thus regenerated.

Abstract: A CO2 recovery device is provided with a CO2 absorption tower and an absorption-solution regeneration tower. The CO2 absorption tower includes: a CO2 absorption section in which CO2-containing flue gas is brought into contact with a CO2 absorption solution, namely a basic-amine-compound absorption solution, so as to remove CO2 from the CO2-containing flue gas; and a water-washing section in which decarbonated flue gas from which CO2 has been removed is brought into contact with washing water so as to remove accompanying substances accompanying the decarbonated flue gas. The absorption-solution regeneration tower regenerates the CO2 absorption solution that has absorbed CO2. This CO2 recovery device, in which a lean solution from which CO2 has been removed is reused in the CO2 absorption tower, has an aldehyde-removing agent supply unit that supplies a sulfite-compound aldehyde removing agent to a circulating washing-water line that circulates the washing water to the water-washing section.

Abstract: The invention relates to a method and a plant for removing the acid compounds contained in two gaseous effluents of different origins, comprising using a single amine-based absorbent solution circulating between a first absorber and a regenerator, and a second absorber and the same regenerator. The present invention advantageously applies for example to CO2 capture within a single plant intended for capture of the gaseous effluents produced upon hydrogen production through steam reforming of a gaseous hydrocarbon feed, such as combustion fumes and syngas.

Abstract: A process is disclosed for purifying a gaseous mixture containing acidic gases, such as a natural gas, including contacting the gaseous mixture with an absorbent solution including: from 35% to 45% by weight of at least one tertiary amine relative to the total weight of the absorbent solution; from 4% to 12% by weight of at least one activator relative to the total weight of the absorbent solution selected from the primary amines and the secondary amines, the total content of tertiary amine and activator being from 38% to 50% by weight relative to the total weight of the absorbent solution, and the total concentration of tertiary amine and activator being between 3.8 and 4.2 mol/L; from 17% to 25% by weight of at least one C2 to C4 thioalkanol relative to the total weight of the absorbent solution; and the remainder being water to reach 100% by weight.

Abstract: A CO2 amine scrubbing process uses an absorbent mixture combination of an amine containing a primary amino group CO2 sorbent in combination with a non-nucleophilic relatively stronger base. The weaker base(s) are nucleophilic and have the ability to react directly with the CO2 in the gas stream while the relatively stronger bases act as non-nucleophilic promoters for the reaction between the CO2 and the weaker base. Two moles of CO2 can be taken up by the primary amine groups in a dicarboxylation reaction, affording the potential for a highly efficient scrubbing process.

Abstract: Compositions comprising an organic salt, an amine and water are described herein. The methods of using the compositions include the removal of an acid gas from a gas mixture.

Abstract: In a method of absorbing CO2 from a gas mixture the use of an absorption medium comprising water and at least one amine of formula (I) where R1 is a —(CH2)n—(XCH2CH2)m—Y—R3 radical where R3=hydrogen or an alkyl radical having from 1 to 6 carbon atoms, X and Y are each, independently of one another, NR3, oxygen, SO or SO2, where in the case of Y?SO and in the case of Y?SO2, R3 is not hydrogen, and Y—R3 can be an N-morpholinyl radical or an N-piperazyl radical, n=2 to 4, m=0 to 4 and R2 is hydrogen, an alkyl radical having from 1 to 6 carbon atoms or a radical R1, where m is not 0 when R2 is not a radical R1, Y?NR3 and Y—R3 is not an N-morpholinyl radical and not an N-piperazyl radical, makes it possible to avoid precipitation of a solid during the absorption of CO2 and a separation into two liquid phases during the regeneration of the absorption medium.

Abstract: An absorbent for desulfurization of combustion gas is provided. The absorbent includes about 1 to about 16 wt % of potassium carbonate (K2CO3); about 0.1 to about 10 wt % of a promoting agent including hindered cyclic amine, hindered cyclic amine bicarbonate, or a combination thereof; and a balance amount of water. In addition, a method of treating the combustion gas using the absorbent is provided.

Abstract: This invention relates to sulfur based compounds useful in methods of carbon dioxide or sulfur dioxide removal.

Abstract: The present invention relates to an aqueous alkanolamine solution for the removal of hydrogen sulfide from gaseous mixtures. The aqueous alkanolamine solution comprises (i) an amino compound with the formula: R1R2NCH2CH(OH)CH2OH wherein R1 and R2 independently represent lower alkyl groups of 1 to 3 carbon atoms and (ii) an acid or acid-forming material having a pKa equal to or less than 8, optionally (iii) another amino compound, and optionally (iv) a physical solvent. Further, the present invention relates to a process for removing acid gases from a gaseous mixture, preferably hydrogen sulfide, comprising the step of contacting the gaseous mixture with the aqueous alkanolamine solution, preferably wherein the temperature of the aqueous alkanolamine solution is equal to or greater than 140° F. Examples of the gaseous mixtures include natural gas, synthesis gas, tail gas, and refinery gas.

Abstract: An amino-siloxane composition is presented. The amino-siloxane composition includes structure (I): wherein R1 is independently at each occurrence a C1-C5 aliphatic radical; R2 is a C3-C4 aliphatic radical; R3 is a C1-C5 aliphatic radical or R4, wherein R4 comprises structure (II): and X is an electron donating group. Methods of reducing an amount of carbon dioxide in a process stream using the amino-siloxane composition are also presented.

Abstract: A cyclic process for selectively separating hydrogen sulfide from a gas mixture including CO2 is operated by contacting the gas mixture under sorption conditions with a non-aqueous sorbent comprising a basic non-protogenic nitrogenous compound to react the H2S with the basic compound so that the H2S can be sorbed by the compound. The compound containing the sorbed H2S can then be subjected to desorption conditions by which the H2S is desorbed and the sorbent readied for another sorption step in the cycle. The basic nitrogenous compound can be carried on a porous solid sorbent, e.g., a solid oxide such as alumina, silica, silica-alumina, zeolites, or a mesoporous and/or macroporous solid oxide. The process may be operated using a pressure swing, temperature swing, partial pressure swing, purge displacement, or a combination thereof between the sorption and desorption portions of the cycle, preferably in a rapid cycle operation.

Abstract: An absorbent composition that is useful in the selective removal of hydrogen sulfide relative to carbon dioxide from gaseous mixtures that comprise both hydrogen sulfide and carbon dioxide and the use thereof. The absorbent composition includes an aqueous solvent that comprises an amine mixture, comprising an amination reaction product of tert-butylamine and a polydispersed polyethylene glycol mixture, and water with a concentration of an added strong acid to inhibit phase separation of the aqueous solvent. The operation of certain gas absorption processes can be improved by the use of the absorbent composition.

Abstract: A method is provided for separating carbon dioxide from a flue gas of an incineration system, wherein bicin and/or EDTA is mixed as an oxidation inhibitor into a scrubbing solution with an amine-containing absorption agent, the flue gas is brought into contact with the scrubbing solution prepared in such a manner for absorption of the carbon dioxide contained therein, and the scrubbing solution is then thermally treated, the carbon dioxide being desorbed thereby. A corresponding scrubbing solution comprising an amine-containing absorption agent and comprising bicin and/or EDTA as an oxidation inhibitor is also provided.

Abstract: A solvent for recovery of carbon dioxide from gaseous mixture having at least amine, and at least one salt of an amino carboxylic acid or amino sulfonic acids. One specific solvent contains less than about 75% by weight of water and has a single liquid phase.

Abstract: A CO2 recovery system includes an absorber 2 and a regenerator 3. The absorber 2 includes a CO2 absorbing section 21 and a water-washing section 22. The CO2 absorbing section 21 allows flue gas 101 to come into contact with a basic amine compound absorbent 103 so that the basic amine compound absorbent 103 absorbs CO2 in the flue gas 101. The water-washing section 22 allows the decarbonated flue gas 101A in which the amount of CO2 has been reduced in the CO2 absorbing section 21 to come into contact with circulating wash water 104 and to be washed with the wash water 104 so that the amounts of the basic amine compounds entrained in the decarbonated flue gas 101A are reduced. The regenerator 3 releases CO2 from the basic amine compound absorbent 103 the CO2 absorbed therein.

Abstract: Provided is a compound including an activated metal and a ligand, a carbon dioxide (CO2) absorbent including the compound, a method of preparing the CO2 absorbent, and a method of removing CO2.

Abstract: Disclosed are a compound including an oxalate, a carbon dioxide absorbent including the same, a method of preparing the carbon dioxide absorbent and a method of removing carbon dioxide, which may overcome issues of high recycling energy and low absorptivity of a conventional carbon dioxide absorbent to considerably reduce recycling energy and absorb a greater amount of carbon dioxide per unit absorbent, so that a size of a carbon dioxide absorption tower may be reduced and a less amount of recycling energy may be used, contributing to a substantial decrease in device manufacture costs and management costs.

Abstract: A system, method, and material that enables the pressure-activated reversible chemical capture of acid gasses such as CO2 from gas volumes such as streams, flows or any other volume. Once the acid gas is chemically captured, the resulting product typically a zwitterionic salt, can be subjected to a reduced pressure whereupon the resulting product will release the captures acid gas and the capture material will be regenerated. The invention includes this process as well as the materials and systems for carrying out and enabling this process.

Abstract: A CO2 recovery method and apparatus for desorbing and recovering carbon dioxide with low energy consumption from a gas discharged from a power generation plant having a boiler and a steam turbine. The adsorption and the desorption of carbon dioxide are performed alternately in two CO2 absorbers and located in a CO2 recovery apparatus, which each hold a carbon dioxide adsorbent. When carbon dioxide is desorbed, steam discharged from an outlet of a steam turbine of a power generation plant is partially branched before introduced into a condenser, and sent to a steam compressor. The partially branched steam is compressed in this compressor, and then sent to a cooling device. By cooling, the steam for desorption is prepared. The steam prepared in the cooling device is supplied into a CO2 absorber to desorb carbon dioxide. Accordingly, waste steam, before it is introduced into the condenser, is usable for desorption.