Abstract: Articles for capturing or separating a target gas from a gas stream may include a porous substrate such as a flexible sheet or mat, or a rigid ceramic monolith impregnated or coated with a sorbent composition. The sorbent composition may include a polyamine and a coexistent polymer chemically bonded to the polyamine. The polyamine may include a polyethylenimine. The coexistent polymer may include a polyurethane, a polyolefin-acrylic acid copolymer, or a combination thereof. The sorbent composition may be substantially less water-insoluble than compositions containing only a polyamine and may have high durability and good adsorption capacity for acidic target gases such as carbon dioxide. Methods for preparing the articles using aqueous polymer solutions are provided. Methods for capturing or separating target gases using the articles are provided.

Abstract: A process and equipment for removing carbon dioxide from a process gas (G), with a solid adsorbent and temperature swing adsorption, where the carbon dioxide is removed from process gas in either a first bed (B1) or a second bed (B2) of adsorbent, while the other bed is regenerated with heat furnished by the incoming hot process gas; the beds are contained in vessels (V1, V2) with heat exchange tubes or plates (T1, T2), so that the removal of CO2 takes place by contacting the process gas with the bed in the shell side, and regeneration of a bed takes place by passing the hot process gas inside the tubes.

Abstract: The present invention relates to a metal organic framework comprising of a metal ion (M) and an organic ligand wherein more than one hydroxy ligand are present about the metal ion. Also provided is a method for synthesising the metal-organic frameworks and their application in areas including scrubbing exhaust gas streams of acidic gases, scrubbing natural gas of acidic gases by separation or sequestration and separating C2Ha or other VOC gases from other gas mixtures.

Abstract: Cavitand compositions that comprise void spaces are disclosed. The void spaces may be empty, which means that voids are free of guest molecules or atoms, or the void spaces may comprise guest molecules or atoms that are normally in their gas phase at standard temperature and pressure. These cavitands may be useful for industrial applications, such as the separation or storage of gasses. Novel cavitand compounds are also disclosed.

Abstract: A system for carbon dioxide capture from flue gas and other industrial gas sources utilizes microcapsules with very thin polymer shells. The contents of the microcapsules can be liquids or mixtures of liquids and solids. The microcapsules are exposed to the flue gas and other industrial gas and take up carbon dioxide from the flue gas and other industrial gas and eventual precipitate solids in the capsule.

Abstract: A system for removing carbon dioxide from an atmosphere to reduce global warming including an air extraction system that collects carbon dioxide from the atmosphere through a medium and removes carbon dioxide from the medium; a sequestration system that isolates the removed carbon dioxide to a location for at least one of storage and which can increase availability of renewable energy or non-fuel products such as fertilizers and construction materials; and one or more energy sources that supply process heat to the air extraction system to remove the carbon dioxide from the medium and which can regenerate it for continued use.

Abstract: A method and apparatus for extracting CO2 from air comprising an anion exchange material formed in a matrix exposed to a flow of the air, and for delivering that extracted CO2 to controlled environments. The present invention contemplates the extraction of CO2 from air using conventional extraction methods or by using one of the extraction methods disclosed; e.g., humidity swing or electro dialysis. The present invention also provides delivery of the CO2 to greenhouses where increased levels of CO2 will improve conditions for growth. Alternatively, the CO2 is fed to an algae culture.

Abstract: In some embodiments, the present disclosure pertains to methods of capturing CO2 from an environment by associating the environment (e.g., a pressurized environment) with a porous carbon material that comprises a plurality of pores and a plurality of nucleophilic moieties. In some embodiments, the associating results in sorption of CO2 to the porous carbon materials. In some embodiments, the sorption of CO2 to the porous carbon materials occurs selectively over hydrocarbons in the environment. In some embodiments, the methods of the present disclosure also include a step of releasing captured CO2 from porous carbon materials. In some embodiments, the releasing occurs without any heating steps by decreasing environmental pressure. In some embodiments, the methods of the present disclosure also include a step of disposing released CO2 and reusing porous carbon materials. Additional embodiments of the present disclosure pertain to porous carbon materials that are used for CO2 capture.

Abstract: The present invention relates to an agglomerated zeolite adsorbent containing at least one polymer matrix that is greatly laden with at least one zeolite adsorbent. The invention also relates to the method for preparing such an adsorbent and to the uses thereof, particularly as an adsorbent of moisture, odors, volatile organic components, and the like.

Abstract: A system and method for separating and/or purification of CO2 gas from a CO2 feed stream is described. The system and method include a plurality of fixed sorbent beds, adsorption zones and desorption zones, where the sorbent beds are connected via valve and lines to create a simulated moving bed system, where the sorbent beds move from one adsorption position to another adsorption position, and then into one regeneration position to another regeneration position, and optionally back to an adsorption position. The system and method operate by concentration swing adsorption/desorption and by adsorptive/desorptive displacement.

Abstract: A process for separating a carbon dioxide from a gas stream is disclosed. The process can include passing the gas stream over a sorbent that adsorbs the carbon dioxide by concentration swing adsorption and adsorptive displacement. The sorbent can be regenerated and the carbon dioxide recaptured by desorbing the carbon dioxide from the sorbent using concentration swing adsorption and desorptive displacement. A carbon dioxide separation system is also disclosed. Neither the system nor the process rely on temperature swing or pressure swing adsorption.

Abstract: This disclosure relates generally to the selective separation of carbon dioxide (CO2) from multi-component gas streams containing CO2 utilizing zeolite SSZ-45 as an adsorbent.

Abstract: Carbon dioxide is removed from a source gas stream by admission to a vessel containing a quantity of a material preferentially absorbing carbon dioxide. The carbon dioxide content of an escaping gas stream is monitored. When the carbon dioxide content of the escaping gas stream indicates that absorbent is saturated with carbon dioxide, an inlet valve is closed, and a vacuum applied, causing the carbon dioxide to be desorbed for collection.

Abstract: High volumetric-efficiency thermally integrated systems for capturing a target gas from a process gas stream include a monolithic body and a distribution system. The monolithic body includes a first plurality of channels and a second plurality of channels each having sorbent surfaces that reversibly adsorb the target gas. The channels are in thermal communication such that heat from an exothermic adsorption of target gas in one plurality of channels is used by an endothermic desorption of target gas from the other plurality of channels. Methods for separating a target gas from a process gas stream include switching the high volumetric-efficiency thermally integrated systems between a first state and a second state. In the first state, the first plurality of channels undergoes desorption while the second undergoes adsorption. In the second state, the second plurality of channels undergoes desorption while the first plurality undergoes adsorption.

Abstract: A method of temperature swing adsorption allows separation of a first fluid component from a fluid mixture comprising at least the first fluid component in an adsorptive separation system having a parallel passage adsorbent contactor with parallel flow passages having cell walls which include an adsorbent material and axial thermally conductive filaments in direct contact with the adsorbent material. The method provides for transferring heat from the heat of adsorption in a countercurrent direction along at least a portion of the filaments during adsorption and transferring heat in either axial direction along the filaments to provide at least a portion of the heat of desorption during a desorption step. A carbon dioxide TSA separation process to separate carbon dioxide from flue gas also includes steps transferring heat from adsorption or for desorption along axial thermally conductive filaments.

Abstract: Sorbent substrates for CO2 capture and methods for forming the same are disclosed. In one embodiment, a method for forming a sorbent substrate for CO2 capture may include forming a plurality of matrix rods from a sorbent material and forming a plurality of channel rods from a support material. The plurality of matrix rods may then be co-extruded with the plurality of channel rods to form a plurality of sorbent filaments comprising a matrix of the sorbent material in which channels of support material are positioned such that the channels extend in an axial direction of each of the plurality of sorbent filaments. The plurality of sorbent filaments may then be stacked to form a filament assembly in which the plurality of sorbent filaments are axially aligned. Thereafter, the plurality of sorbent filaments of the filament assembly may be bonded to one another to form the sorbent substrate.

Abstract: A system for removing carbon dioxide from an atmosphere to reduce global warming including an air extraction system that collects carbon dioxide from the atmosphere through a medium and removes carbon dioxide from the medium; a sequestration system that isolates the removed carbon dioxide to a location for at least one of storage and which can increase availability of renewable energy or non-fuel products such as fertilizers and construction materials; and one or more energy sources that supply process heat to the air extraction system to remove the carbon dioxide from the medium and which can regenerate it for continued use.

Abstract: Disclosed is a carbon dioxide capture system which includes a first carbon dioxide adsorption/desorption section including a first carbon dioxide adsorption section, a first carbon dioxide desorption section connected to the first carbon dioxide adsorption section, and a first carbon dioxide adsorbent circulating through the first carbon dioxide adsorption section and the first carbon dioxide desorption section; and a second carbon dioxide adsorption/desorption section including a second carbon dioxide adsorption section, a second carbon dioxide desorption section connected to the second carbon dioxide adsorption section, and a second carbon dioxide adsorbent circulating through the second carbon dioxide adsorption section and the second carbon dioxide desorption section.

Abstract: A method of removing CO2 from an input gas stream, the method comprising reacting a solid sorbent with the input gas stream to remove CO2 from the input gas stream in a carboniser; reacting the solid sorbent from the carboniser in a calciner to release the CO2 into a substantially pure gas stream; exchanging heat between the carboniser and calciner; and controlling a CO2 partial pressure and temperature in the carboniser and a CO2 partial pressure and temperature in the calciner such that the temperature in the carboniser is higher than the temperature in the calciner for providing heat from the carboniser to the calciner.

Abstract: A method for the removal of H2O and CO2 from a gaseous stream comprising H2O and CO2, such as a flue gas. The method initially utilizes an H2O removal sorbent to remove some portion of the H2O, producing a dry gaseous stream and a wet H2O removal sorbent. The dry gaseous stream is subsequently contacted with a CO2 removal sorbent to remove some portion of the CO2, generating a dry CO2 reduced stream and a loaded CO2 removal sorbent. The loaded CO2 removal sorbent is subsequently heated to produce a heated CO2 stream. The wet H2O removal sorbent and the dry CO2 reduced stream are contacted in a first regeneration stage, generating a partially regenerated H2O removal sorbent, and the partially regenerated H2O removal sorbent and the heated CO2 stream are subsequently contacted in a second regeneration stage.

Abstract: Methods and compositions useful for gas storage and separation are provided. More particularly, compositions and methods for CO2 storage and separation are provided comprising an open metal organic framework.

Abstract: Articles for capturing or separating a target gas from a gas stream may include a porous substrate such as a flexible sheet or mat, or a rigid ceramic monolith impregnated or coated with a sorbent composition. The sorbent composition may include a polyamine and a coexistent polymer chemically bonded to the polyamine. The polyamine may include a polyethylenimine. The coexistent polymer may include a polyurethane, a polyolefin-acrylic acid copolymer, or a combination thereof. The sorbent composition may be substantially less water-insoluble than compositions containing only a polyamine and may have high durability and good adsorption capacity for acidic target gases such as carbon dioxide. Methods for preparing the articles using aqueous polymer solutions are provided. Methods for capturing or separating target gases using the articles are provided.

Abstract: An adsorbent for carbon dioxide may include a mesoporous inorganic oxide having a crystalline halide of an alkali metal or alkaline earth metal supported thereto and a chemical species containing phosphorous (P), sulfur(S), or boron (B) supported thereto.

Abstract: High volumetric-efficiency thermally integrated systems for capturing a target gas from a process gas stream include a monolithic body and a distribution system. The monolithic body includes a first plurality of channels and a second plurality of channels each having sorbent surfaces that reversibly adsorb the target gas. The channels are in thermal communication such that heat from an exothermic adsorption of target gas in one plurality of channels is used by an endothermic desorption of target gas from the other plurality of channels. Methods for separating a target gas from a process gas stream include switching the high volumetric-efficiency thermally integrated systems between a first state and a second state. In the first state, the first plurality of channels undergoes desorption while the second undergoes adsorption. In the second state, the second plurality of channels undergoes desorption while the first plurality undergoes adsorption.

Abstract: A process for reducing the loss of valuable products by improving the overall recovery of a contaminant gas component in swing adsorption processes. The present invention utilizes at least two adsorption beds, in series, with separately controlled cycles to control the adsorption front and optionally to maximize the overall capacity of a swing adsorption process and to improve overall recovery a contaminant gas component from a feed gas mixture.

Abstract: A carbon pyrolyzate adsorbent is described that is selective for carbon dioxide in contact with gas mixtures including carbon dioxide and methane. The adsorbent has a carbon dioxide adsorbent capacity at 1 bar pressure of greater than 50 cm3 carbon dioxide per gram of adsorbent at 273K, a methane adsorption capacity at 1 bar pressure of less than 35 cm3 methane per gram of adsorbent at 21° C., and a bulk density of greater than 0.55 gram per cubic centimeter of volume. Such adsorbent can be utilized, for example, for biogas upgrading, natural gas purification, coal bed methane purification, and refining operations.

Abstract: This invention relates to aggregates of small particles of synthetic faujasite zeolite. Small primary particles of zeolite are clustered into larger secondary particles. The observable average width of the primary particles may be 0.3 micron or less and the observable average width of the secondary particles may be 0.8 micron or more. The silica to alumina ratio of the zeolite may be less than 4:1.

Abstract: Disclosed is a dry carbon dioxide capturing device which can improve sorption efficiency by supplying sorbent for absorbing carbon dioxide or exhaust gas containing carbon dioxide to a recovery reactor in multistages at various heights. The dry carbon dioxide (CO2) capturing device with multistage supply structure comprises a recovery reactor 102 to recover CO2 by contacting a solid sorbent with exhaust gas; a recovery cyclone 110 connected to the recovery reactor 102 to discharge a gas while separating the CO2-captured solid sorbent only; a regenerator 114 connected to the recovery cyclone 110 to receive the CO2-captured solid sorbent and separate CO2 captured in the solid sorbent; and a pre-treatment reactor 122 connected to the regenerator 114 for cooling the solid sorbent free from CO2, wherein at least one of the exhaust gas supply line and the sorbent supply line has two or more arranged according to the height of the recovery reactor 102.

Abstract: A gas separation process uses a structured particulate bed of adsorbent coated shapes/particles laid down in the bed in an ordered manner to simulate a monolith by providing longitudinally extensive gas passages by which the gas mixture to be separated can access the adsorbent material along the length of the particles. The particles can be laid down either directly in the bed or in locally structured packages/bundles which themselves are similarly oriented such that the bed particles behave similarly to a monolith but without at least some disadvantages. The adsorbent particles can be formed with a solid, non-porous core with the adsorbent formed as a thin, adherent coating on the exposed exterior surface. Particles may be formed as cylinders/hollow shapes to provide ready access to the adsorbent. The separation may be operated as a kinetic or equilibrium controlled process.

Abstract: A carbon dioxide separation method and a carbon dioxide separation apparatus capable of maintaining a carbon dioxide adsorption capacity for a long term by collecting an amine compound that evaporates during an operation of the apparatus and reloading the amine compound onto a carbon dioxide adsorbent. An amine collector and an amine aqueous solution preparation device are connected to an adsorbent-packed tank packed with a carbon dioxide adsorbent. An amine compound that evaporates from the carbon dioxide adsorbent during an operation of the apparatus is collected by the amine collector into the amine aqueous solution preparation device. The collected amine compound is reloaded onto the carbon dioxide adsorbent via a supply line.

Abstract: A composition, process and system for capturing carbon dioxide from a combustion gas stream. The composition has a particulate porous support medium that has a high volume of pores, an alkaline component distributed within the pores and on the surface of the support medium, and water adsorbed on the alkaline component, wherein the proportion of water in the composition is between about 5% and about 35% by weight of the composition. The process and system contemplates contacting the sorbent and the flowing gas stream together at a temperature and for a time such that some water remains adsorbed in the alkaline component when the contact of the sorbent with the flowing gas ceases.

Abstract: A carbon dioxide adsorbent may include an amorphous mixed metal oxide including a divalent first metal (M1), a trivalent second metal (M2) different from the divalent first metal (M1), an alkali metal (M3), and an element (A) with an electronegativity of about 2.0 to about 4.0. The alkali metal (M3) may be present in the form of a crystalline halide, an oxide, or a combination thereof. The carbon dioxide adsorbent may also be used in a method of separating carbon dioxide.

Abstract: A carbon dioxide adsorbent may include a chabazite zeolite containing an alkali metal ion or an alkaline earth metal ion. The chabazite zeolite may have a Si/Al mole ratio of about 1 to about 9.9. The carbon dioxide adsorbent may be included in a carbon dioxide capture module. The carbon dioxide adsorbent may also be used in a method of separating carbon dioxide.

Abstract: The invention relates to a process and an apparatus for the treatment of a carbon dioxide-containing gas stream from a large-scale combustion plant, in particular of a power station. The gas stream is separated in a carbon dioxide purification stage R into a gas substream having an increased carbon dioxide content and a gas substream having a reduced carbon dioxide content. The gas substream having an increased carbon dioxide content is fed to a further use and/or storage S. In particular, compression of the carbon dioxide under the ground can reduce the emission of gases which affect the climate. To increase the proportion of compressible CO2, it is proposed that the gas substream having a reduced carbon dioxide content is fed to a pressure swing adsorption stage PSA in which a fraction which is rich in carbon dioxide and a fraction which is low in carbon dioxide are produced.

Abstract: A method and apparatus for removing water vapor from the flue gas stream of an industrial process, including flue gas from a power station. The apparatus including a moisture transfer device, a cooling device, and an optional enthalpy exchange device. The method including running high volumes the flue gas through the moisture transfer device, the cooling device, and the enthalpy exchange device to remove substantially all of the water vapor from the flue gas stream. Also, a method and apparatus for capturing CO2 from flue gas with very low water vapor content. The apparatus including one or more towers packed with a solid sorbent, or including a liquid sorbent. The CO2 from the water vapor free CO2 stream is sorbed by the sorbent and captured for later use.

Abstract: The invention relates to an increased efficiency high-capacity pressure and/or temperature swing adsorption process comprising: contacting a feedstream at a rate of more than 75 MSCFD with an adsorbent material under conditions sufficient for the adsorbent material to selectively adsorb at least one of the component gases in the feedstream, so as to form a first effluent; and selectively desorbing the adsorbed gas from the adsorption material, so as to form a second effluent The adsorption module can contain rotary valves both on the feed end and on the product end and a rotational member defining a central rotational axis, with the adsorption bed(s) oriented circumferentially thereto. The adsorption bed walls can be angled, the feed end cross-sectional area of the adsorption bed(s) can be larger than the product end, and/or the feed end rotary valve diameter of the module(s) can be larger than the product end.

Abstract: A monolithic contactor for collecting target molecules, the monolithic contactor may include a monolithic body having an inlet end and a longitudinally opposed outlet end and a plurality of cells extending from proximate the inlet end to proximate the outlet end, wherein the target molecules are adsorbed to a surface of the body.

Abstract: An article having a flow-through substrate having open channels defined by porous walls, wherein the flow-through substrate includes alumina; and a CO2 sorbent disposed on the flow-through substrate, wherein the CO2 sorbent impregnates the porous walls of the flow-through substrate. Methods of making the article, its use for CO2 capture, and methods for regenerating the article for further use are also disclosed.

Abstract: A humidity sensitive composition which consists: a) of 5 to 50% by weight of a water and/or water vapor absorbing agent; b) 10 to 60% of a water vapor absorbing and releasing agent selected from perlite or vermiculite; c) 5 to 50% of an absorbent for small molecules. Is used as the basis for controlling container rain, sequestering carbon dioxide, and removing ozone and hydrogen sulfide from the air.

Abstract: A pressure-temperature swing adsorption process for the removal of a target species, such as an acid gas, from a gas mixture, such as a natural gas stream. Herein, a novel multi-step temperature swing/pressure swing adsorption is utilized to operate while maintaining very high purity levels of contaminant removal from a product stream. The present process is particularly effective and beneficial in removing contaminants such as CO2 and/or H2S from a natural gas at high adsorption pressures (e.g., at least 500 psig) to create product streams of very high purity (i.e., very low contaminant levels).

Abstract: The present disclosure is directed to the introduction of an additive to a contaminated gas stream. An additive introduction system uses a compressor and carbon dioxide separator to provide a treated carrier gas for introduction of an alkaline additive to a contaminated gas stream.

Abstract: A temperature swing adsorption process for the removal of a target species, such as an acid gas, from a gas mixture, such as a natural gas stream. Herein, a novel multi-step temperature swing/pressure swing adsorption is utilized to operate while maintaining very high purity levels of contaminant removal from a product stream. The present process is particularly effective and beneficial in removing contaminants such as CO2 and/or H2S from a natural gas at relatively high adsorption pressures (e.g., at least 500 psig) to create product streams of very high purity (i.e., very low contaminant levels).

Abstract: The invention includes a process which eliminates or reduces the CO2 emissions from a steam methane reforming and autothermal reforming plant. The process preferentially uses temperature swing adsorption units which are employed to purify the hydrogen stream instead of more conventional solvent based aMDEA plants to remove the CO2 from the gas stream when creating a higher purity hydrogen stream.

Abstract: Disclosed is a dry CO2 capturing device using multi sorbents so as to maintain the sorption rate for exhaust gas containing CO2. The dry carbon dioxide (CO2) capturing device comprises at least two dry carbon dioxide (CO2) capturing parts comprising: a first and second recovery reactors 104 and 105 to recover CO2 by contacting a solid sorbent with exhaust gas; a first and second recovery cyclones 106 and 122 connected to the recovery reactors; a first and second regenerators 110 and 126 connected to the recovery cyclones; and a first and second pre-treatment reactors 116 and 132 connected to the regenerators through sorbent supply lines.

Abstract: A fluid treatment method reduces a concentration of a first component included in a fluid-to-be-treated. A fluid treatment apparatus reduces a concentration of a first component included in a fluid-to-be-treated. A concentration of a second component differing from the first component is reduced in the fluid-to-be-treated in order to obtain a first fluid. The first fluid passes through at least part of an adsorption unit in order to obtain a second fluid. The adsorption unit is capable of adsorbing both the first component and the second component and has at least an ability to adsorb the first component that is temperature dependent. A third fluid pass through a portion of the adsorption unit through which the first fluid has passed. The third fluid has a concentration of the second component that is lower than in the fluid-to-be-treated and a temperature that is higher than the fluid-to-be-treated.

Abstract: A carbon dioxide adsorbent may include a complex oxide including barium and titanium, wherein the complex oxide has a perovskite crystalline structure and is represented by the general formula BaxTiyOz, and an atomic ratio of Ba/Ti ranges from about 0.95 to about 1.7. The carbon dioxide adsorbent may be included in a carbon dioxide capture module. The carbon dioxide adsorbent may also be used in a method of separating carbon dioxide.

Abstract: The disclosure relates to a continuous or semi-continuous, cyclic, countercurrent sorption-desorption method for enhanced control, separation, and/or purification of CO2 gas from one or more sources of a mixture of gases through integrated use of solid monolithic sorbents having a sorption selectivity for the CO2 gas, wherein liquid phase water is added to increase the heat capacity of the mixed gas source(s) in order to achieve a thermal wave moving through the thickness of the sorbent material faster than the CO2 sorption wave.

Abstract: Provided is a method for adsorbing or separating carbon dioxide from a mixture of gases by passing the gas mixture through a porous three-dimensional polymeric coordination compound having a plurality of layers of two-dimensional arrays of repeating structural units, which results in a lower carbon dioxide content in the gas mixture. Thus, this invention provides useful compositions and methods for removal of greenhouse gases, in particular CO2, from industrial flue gases or from the atmosphere.

Abstract: The invention relates to a method for biogas treatment, wherein the gas originating from a fermentation is separated into a usable biogas stream consisting essentially of methane gas and into an exhaust gas stream containing undesired substances, said exhaust gas stream being thermally or catalytically oxidized. According to the invention, the exhaust gas stream is guided prior to oxidation through closed storage containers and/or fermentation residue containers for the inertization of explosive gas concentrations resulting there.

Abstract: Both power and H2 are produced from a gaseous mixture, comprising H2 and CO2, using first and second pressure swing adsorption (PSA) systems in series. The gaseous mixture is fed at super-atmospheric pressure to the first PSA system, which comprises adsorbent that selectively adsorbs CO2 at said pressure, and CO2 is adsorbed, thereby providing an H2-enriched mixture at super-atmospheric pressure. A fuel stream is formed from a portion of the H2-enriched mixture, which is combusted and the combustion effluent expanded to generate power. Another portion of the H2-enriched mixture is sent to the second PSA system, which comprises adsorbent that selectively adsorbs CO2 at super-atmospheric pressure, and CO2 is adsorbed, thereby providing a high purity H2 product. In preferred embodiments, the division of H2-enriched mixture between forming the fuel stream and being fed to the second PSA system is adjustable.