104 results about "Air capture" patented technology

A direct air capture (DAC) of CO2 system includes a reaction reactor having a solid, amine-functionalized sorbent configured to sequester CO2 from air; an in-situ dual-function device configured as a CO2 conversion reactor and an exchange fluid regeneration device; and the exchange fluid, recirculating between the reaction reactor and the dual-function device, configured to capture the sequestered CO2 from the solid sorbent in the reaction reactor and release the captured CO2 in the conversion reactor, the exchange fluid including one or more amino acids.

A direct air capture CO2 system includes a CO2 extraction reactor having a chamber defined by a wall; an air inlet formed in the wall; an air outlet formed in the wall; and housing units defining internal volumes, the housing units arranged within the chamber, at least some of the housing units having spherical and / or ellipsoidal shapes, each of the internal volumes at least partially filled with functionalized CO2 sorbent particles.

The invention relates to new carbon dioxide (CO2) adsorbents based on modified weak base anion exchange resin (WBAER) sorbents comprising a crosslinked polymeric backbone containing appended primary and / or secondary amines. The WBAER materials are insoluble in water and common organic solvents, have surface areas of 5-50 m2 / g, and can be in either bead or powder form. The WBAER materials are suspended in water and / or polar organic solvents and treated with polyfunctional epoxide compounds to effect the modification. The modified materials exhibit significantly improved oxidative stability compared with the unmodified ion-exchange resins without significantly impacting their CO2 uptake capacity or CO2 uptake kinetics. The modified materials remain insoluble in water and common organic solvents and, therefore, are not susceptible to leaching under steam-based or moisture-based sorbent regeneration conditions.

An impregnated product is disclosed comprised of a nonwoven material impregnated with a carbon capture composition. When contacted with a gas stream, the impregnated product is well suited for removing gaseous carbon components from the gas stream, such as carbon dioxide. The impregnated product can be used in a direct air capture process. For instance, an air stream can be fed over a surface of the impregnated nonwoven product in a counter-current manner for removing carbon dioxide from the air stream. The carbon capture composition can then be removed from the nonwoven for releasing and collecting the carbon dioxide. The nonwoven and the carbon capture composition can then be recycled and reused in the process.

Systems and methods for capturing carbon dioxide from multiple different sources at least in part via the electrochemical production of acids and / or bases are generally described. The carbon dioxide may be captured at least in part via exposure of a first input gas stream from a first source to a capture agent (e.g., a liquid solution comprising electrogenerated basic species) to generate carbonate anions, and then subsequent conversion of at least some of the carbonate anions to bicarbonate anions via capture of additional carbon dioxide from a second input gas stream from a second, different source. The first source may be ambient air (e.g., for a direct air capture process), while the second source may be a point source of carbon dioxide (e.g., industrial effluent).

The present disclosure provides a method for removing carbon dioxide from a gas comprising carbon dioxide, the method comprising contacting the gas comprising carbon dioxide with a fluidized solid adsorbent, thereby removing carbon dioxide from the gas and forming a carbon dioxide depleted gas.

Disclosed herein is an apparatus and method for providing a direct air capture (DAC) system of carbon dioxide to improve the energy efficiency, operability, and economic performance of DAC technologies based on multiple types of methods, including thermal swing adsorption (TSA), pressure swing adsorption (PSA), and moisture swing adsorption (MSA). In particular, disclosed herein is a DAC apparatus comprising a first water extraction unit, a process unit comprising a second water extraction unit, a carbon dioxide capture unit, and a water release unit. The present invention also provides a logic control system for a preconditioner of the proposed DAC apparatus, comprising a controller and one or more control elements in communication with a fluid stream, wherein the controller is configured to adjust the temperature, water content, or a combination thereof of the second fluid stream, the third fluid stream, or both to a predetermined range based on the cost of capturing carbon dioxide on a net removal basis.

Systems and methods are provided for integrating direct air capture of carbon dioxide with capture of carbon dioxide from a point source. The systems and methods can include exposing an adsorbent to a low CO2 content gas flow (e.g., air) at conditions similar to ambient conditions to perform an initial amount of sorption of CO2. The initial sorption results in a partially loaded sorbent having a first sorbent loading. The partially loaded sorbent can then be exposed to a flue gas and / or other gas flow that contains a higher CO2 content. This allows a second sorption step to be performed using a higher CO2 content gas, resulting in an additionally loaded sorbent having a second (higher) sorbent loading. The sorbed CO2 can then be desorbed from the sorbent.

The present application aims to provide a lean water composite alkanolamine absorbent for low-concentration CO2 capture, belonging to the technical field of green carbon capture, which is a composite system of mixed alkanolamine-organic physical solvent-water. By regulating the types and proportions of the components, the water content of the system and the solvent regeneration energy consumption are significantly reduced while ensuring high CO2 absorption capacity. The water content of the absorbent is not higher than 20%, and it exhibits good absorption performance under low partial pressure CO2 conditions. The desorption regeneration energy consumption is about 77% lower than that of the same proportion alkanolamine high water content MEA system (MEA:EG:H2O=0.2:0:9.8). In the absorption-desorption cycle process, the absorbent exhibits good cycle stability, and its CO2 absorption performance does not significantly attenuate after multiple cycles. The lean water composite alkanolamine absorbent is suitable for low-concentration CO2 separation application scenarios such as direct air capture.

A system includes a vessel including an inlet configured to receive a thermal energy source, the vessel connected to a feeder for introducing a solid sorbent to an interior of the vessel and a collector configured to receive the solid sorbent for removal of the solid sorbent from the vessel. The system also includes a heat exchanger disposed within the vessel, the heat exchanger configured to hold the solid sorbent and facilitate a heat exchange process between the solid sorbent and the thermal energy source, and an isolation system configured to isolate the interior of the vessel during introducing the solid sorbent into the vessel and / or during removing the solid sorbent from the vessel.

Systems and methods for an atmospheric carbon dioxide removal system that includes a plurality of carbon capture containers, a plurality of fans, an air diverter, and a velocity stack. Each of the carbon capture containers has an outwardly facing side and an inwardly facing side with the inwardly facing side facing an enclosed space. The fans are disposed adjacent to the carbon capture containers. The fans are arranged to move air through the carbon capture containers in a first direction from the outwardly facing side into the enclosed space. The air diverter is disposed within the enclosed space and receives the air flowing in the first direction and redirects the air to flow in a second direction that is angled upwardly from the first direction. The velocity stack is disposed on top of the enclosed space and is configured to accelerate the flow of the air in the second direction.

It is described a method of preparing and transporting a plurality of sorbent cassettes (30) to a direct air capture plant (100) or a point source CO2 emitter with less than 1,5% CO2 in the exhaust gas (100), wherein the method comprises: - providing a transport container (10) at a production site (50); - providing a plurality of sorbent cassettes (30); - loading the sorbent cassettes (30) into the transport container (10); - providing access to an inner volume (35) of each of the sorbent cassettes (30) in the transport container (10) and filling the inner volume (35) of each of the cassettes with a sorbent material (20) at the production site (50); - after filling, closing off the inner volume (35) of each of the filled sorbent cassettes (30); - transporting the transport container (10) with the filled sorbent cassettes (30) to the direct air capture plant (100) or the point source CO2 emitter with less than 1,5% CO2 in the exhaust gas (100). It is further described to a direct air capture plant (100), a point source CO2 emitter with less than 1,5% CO2 in the exhaust gas (100), a floating unit comprising the direct air capture plant (100) or the point source CO2 emitter with less than 1,5% CO2 in the exhaust gas (100), as well as a sorbent cassette (30).

Systems and methods of direct air capture are described. A method of fan speed control in a direct air capture (DAC) system includes actuating a first fan to produce a first airflow and a second fan to produce a second airflow. The first fan is disposed proximate to a first portion of the DAC system, and a plurality of adsorber panels are configured to be translated through the DAC system through at least the first portion and then subsequently through a second portion of the DAC system. The second fan is disposed proximate to the second portion of the DAC system, and a flow rate of the second airflow is less than the flow rate of the first airflow. Both the first airflow and the second airflow are configured to flow through the plurality of adsorber panels and be discharged through the first fan to an external environment.

The embodiment of the present application provides a method for directly capturing carbon dioxide from air. The method comprises the following steps: capturing carbon dioxide in air by an adsorber; performing first vacuumization in the adsorber after capturing carbon dioxide; introducing water vapor into the adsorber to increase the pressure in the adsorber and increase the temperature of the adsorbent in the adsorber, so as to desorb carbon dioxide; performing second vacuumization on the adsorber, and obtaining mixed gas formed by water vapor and carbon dioxide; and performing gas-liquid separation on the mixed gas to obtain carbon dioxide. The method reduces the regeneration energy consumption of the adsorbent and improves the concentration of the carbon dioxide product gas.

The invention provides a control method of a data center and direct air trapping dynamic coupling system, is applied to the data center and direct air trapping dynamic coupling system, and relates to the technical field of air treatment. The method comprises the steps of obtaining system operation data; constructing a composite state vector representing system dynamics based on the current state data and the historical operation data; outputting an action vector through a preset intelligent control module based on the composite state vector; generating and executing an action instruction through a preset intelligent decision-making module based on the action vector; a coupling system fusing a data center and a DAC is constructed, and dynamic cooperative control is realized based on a composite state vector and an intelligent decision module, so that exhaust air, waste heat and a cold source of the data center can be effectively utilized, and the operation energy consumption of the DAC is remarkably reduced; by introducing a state construction method containing a historical trend and a hierarchical security decision mechanism, the adaptive capacity of the system to dynamic load and environment change is improved, and the heat dissipation security of the data center is guaranteed.

A system to remove CO2 from the air using ocean thermal energy conversion is disclosed. The system includes a pair of substantially vertically oriented concentric tapered tubular structures disposed in the ocean, with an upper end at or near the surface and a lower end at ocean depth. The tubular structures define an inner, substantially cylindrical air pathway and an outer, substantially annular pathway. Each of one or more bifans at corresponding axial locations along a central vertical axis of the tubular structures includes an inner set of fan blades disposed in the inner air pathway and an outer set of fan blades disposed in the outer pathway. In one airway air is compressed isothermally and moved to a deep end of the system while air returning and expanding isothermally via the other airway drives the bifan(s), which provides the compression and drives a motor to generate electricity.

Crystallizer devices and methods of direct air capture of carbon dioxide are described herein. The methods include providing one or more polymeric strands in contact with an alkaline capture solution. Each of the polymeric strands is comprised of a plurality of polymeric fibers that combine to form an outer surface of the polymeric strand. The outer surface of the strand forms a crystallizing surface. The alkaline capture solution travels by way of capillary force from the outer surface of the strand inwardly through intra-strand pores and from a first end of the strand in a direction towards a second end of the strand through intra-strand pores. The methods also include, as the alkaline solution travels towards the second end, contacting the one or more polymeric strands with ambient air such that KOH within the alkaline solution reacts with CO2 to form K2CO3 precipitate at the crystallizing surface.

The present invention comprises: an enclosure having an air introduction unit and a discharge unit; an adsorption support body disposed inside the enclosure and including an adsorbent; a support unit including a plurality of rods disposed in the enclosure with both ends supported thereby, the rods being disposed in a plurality of rows so that the adsorption support body can be disposed via the rods; and an automatic replacement means provided in the enclosure to replace the adsorption support body. In addition, the present invention comprises: an enclosure having an air introduction unit and a discharge unit; an adsorption support body disposed inside the enclosure and including an adsorbent; a support unit including a plurality of rods disposed in the enclosure with both ends supported thereby, the plurality of rods being arranged in a plurality of rows so that the adsorption support body is disposed continuously via the plurality of rods; and a tension adjustment unit for adjusting the tension of the adsorption support body in at least one of the rods of the support unit.

The invention relates to a system for capturing at least one gas component from a gas stream, the system comprising: an adsorber section (2) for capturing the gas component from the gas stream using a granular sorbent material; a regeneration section (4) for receiving sorbent loaded with the gas component from the adsorber section (2) and for removing the captured gas component from the sorbent; a product section (8) for receiving and compressing the removed gas component; a transport section (6) for receiving regenerated sorbent from the regeneration section (4) and for providing the regenerated sorbent to the adsorber section (2); and a heat recovery system (12) for recovering thermal energy connected between the regeneration section (4) and the product section (8).

The utility model discloses a device for generating a carbon material by a direct air capture coupling hydrate method, which is characterized by comprising an absorption regeneration system, a hydration purification system and a photocatalytic cracking system which are sequentially arranged, the photocatalytic cracking system comprises a catalytic reactor, a photocatalytic xenon lamp, a discharge pipe, a CO2 connecting pipe and a first emptying pipe are arranged on the catalytic reactor, and the CO2 connecting pipe is connected with the discharge pipe. Ga-Sn alloy is arranged in the catalytic reactor, a first temperature control mechanism is arranged on the outer wall of the catalytic reactor, the CO2 connecting pipe is connected with the hydration purification system, a flow control meter and a valve are arranged on the CO2 connecting pipe, the discharging pipe is connected with a carbon material collecting box, and a transfer pump is arranged on the discharging pipe. The device disclosed by the utility model has the beneficial effects that a photocatalytic cracking method and a hydrate method are integrated, and a carbon material is directly generated from a direct air capture coupling hydrate method, so that efficient capture of carbon dioxide is realized, and cyclic utilization of the carbon material is realized.

The invention belongs to the technical field of carbon capture, and particularly relates to an adsorbent for direct air capture of CO2 and a preparation method and application thereof, the preparation method comprises the following steps: S1, mixing a zeolite molecular sieve with an alkali metal reagent, and carrying out crystal transformation reaction to obtain a precursor; s2, mixing the precursor with a metal salt solution, and carrying out ion exchange to obtain the adsorbent, the metal salt solution comprises at least one of a barium salt solution and a strontium salt solution. The adsorbent for direct air trapping of CO2 shows excellent adsorption performance on low-concentration CO2 under low-concentration CO2, the trapping efficiency of a direct air trapping (DAC) device can be effectively improved when the adsorbent is applied to the DAC device, and the adsorbent has the advantages of mild process conditions, simple steps, reliable route and easily available raw materials, and has the potential of large-scale industrial production.

The present application relates to a kind of salt solution desorption direct air capture carbon adsorption material and its preparation and application, the material is prepared by the following method: (1) the ion exchange resin is weighed and placed in CuCl2 solution and is treated by first impregnation, filtration, washing, and metal-loaded ion exchange resin is obtained;(2) the metal-loaded ion exchange resin in step (1) is placed in NaOH solution and is treated by second impregnation, filtration, and direct air capture carbon adsorption material is obtained, that is, the target product.The direct air capture carbon adsorption material of the present application can adsorb and desorb CO2 under room temperature and normal pressure conditions.Due to acid-base neutralization and the synergistic effect of electrostatic attraction, low concentration CO2 in air reacts to be HCO3 ‑ Combined on coordination site.Because the coordination priority of Cl ‑ Is higher than HCO3 ‑ , desorption can be completed using salt solution, and the operation is simple, without additional energy consumption.CO2 adsorbed in the form of carbonate exists stably in solution phase, and has great potential in CO2 resource utilization.

A direct air capture (DAC) process for capturing CO2 from a stream of air by passing air through a capture unit comprising a sorbent structure The sorbent structure comprises an active component comprising sodium aluminate in an amount from 5 wt% and up to 40 wt% and a metal-containing support in an amount of at least 55 wt%, both based on the weight of the sorbent structure. The metal-containing support is selected from the group consisting of a metal alloy, metal oxide, metal-non-metal alloy, a ceramic material, and any combination thereof. The method further comprises capturing the carbon dioxide by the sorbent to provide a treated stream of air with less carbon dioxide exiting the capture unit.

Solid adsorbents based on amidine-containing aliphatic amine polymers with resistance to oxidative damage in air and water at elevated temperatures compared to the prior art is disclosed. The solid adsorbent exhibits a high porosity and reactivity for the adsorption of carbon dioxide (CO2) from ambient air and does not require a porous substrate material such as porous silica to generate said porosity and reactivity to or with CO2. The material is particularly useful as a CO2 adsorbent for Direct Air Capture (DAC) applications.

A phosphonium-based polymeric ionic liquid for moisture-swing direct air capture of carbon dioxide is disclosed. The polymeric ionic liquid comprises a styrene-based backbone and phosphonium groups covalently bonded to the backbone, each substituted with methyl, and bicarbonate counterions associated with the phosphonium groups. The polymeric ionic liquid adsorbs carbon dioxide under cyclic wet-dry conditions and exhibits a capture capacity of at least 500 μmol per gram. Methods of producing the polymeric ionic liquid and methods of capturing carbon dioxide using alternating humidity cycles are also disclosed.

Structured sorbents including a metal organic framework, hydrophobic binder, and hydrophobic carrier, wherein the hydrophobic carrier includes fluorinated silica. Methods of making structured sorbents and using structured sorbents in direct air capture of CO2.

A direct air capture system to remove atmospheric carbon dioxide is provided. The system may include a solid carbon dioxide sorbent and a thermal regeneration module that cycle an exchange fluid. The exchange fluid may include an amine with an affinity for carbon dioxide such that it removes carbon dioxide from the solid sorbent. The exchange fluid may be heated such as with water vapor to remove carbon dioxide from the exchange fluid such that it can be recycled back to the solid sorbent.

The invention discloses a trigger type oxygen generator with an ACW air capturing function, relates to the field of oxygen generators, and aims to solve the technical problems that a humidification bottle of an existing trigger type oxygen generator blocks a negative pressure signal, and internal heat dissipation negative pressure disturbs pressure compensation. The oxygen generator comprises an oxygen generator outer shell, a trigger plate, a humidification bottle and an internal structure assembly, a three-way pipe is arranged in the humidification bottle, an independent negative pressure signal acquisition channel is formed, and a water body barrier is bypassed; an ACW interface is formed in the side face of the outer shell and connected with a micro-pressure sensor with the detection precision being + / -0.001 MPa through an ACW connecting pipe, and a real-time external environment pressure reference is provided. Internal structural components form an air inlet channel, an air outlet channel and an exclusive heat dissipation and noise reduction channel, and stable and low-noise operation of equipment is guaranteed. According to the invention, both the humidifying function and accurate triggering are realized, the internal negative pressure interference is effectively counteracted, the signal attenuation and mistaken triggering are avoided, the synchronism of oxygen supply and breathing is improved, the energy is saved, the efficiency is high, the comfort is high, and the device is suitable for the scenes of clinical treatment, family oxygen therapy and the like.

The invention relates to the technical field of low-carbon energy system control, in particular to a time sequence decoupling type multi-carbon capture collaborative flexible regulation and control method and system, and the method comprises the steps: constructing a dynamic load model of modular direct air capture through a time sequence decoupling mode; the real-time response cuttable characteristic in the adsorption stage and the batch constraint translation characteristic in the regeneration stage are realized; constructing a regeneration tower continuous flexible adjustable load model based on a post-combustion carbon capture solvent storage decoupling technology; establishing a multi-stage cooperative control strategy based on a green electricity energy supply gradient, and constructing a dynamic priority order for direct air capture and carbon capture after combustion; and establishing a system full-cycle collaborative optimization model considering carbon assets by taking the minimum system net cost parameter as a target, and solving a global operation strategy of modularized direct air capture and post-combustion carbon capture. According to the invention, the problem of how to convert the carbon capture process into a flexible load capable of being flexibly adjusted and realize collaborative optimization with green power is effectively solved.

The invention relates to the technical field of carbon spreading and carbon conversion, in particular to a direct air trapping and solid oxide electrolysis coupled carbon conversion system and method, and the carbon conversion system comprises a direct air trapping module and a solid oxide electrolytic cell module, the solid oxide electrolytic cell module is connected with the direct air trapping module through a heat energy recovery path, and the heat energy recovery path is configured to drive an adsorbent regeneration process of the direct air trapping module by utilizing reaction waste heat generated by the solid oxide electrolytic cell module. The direct air trapping module comprises an adsorption reactor and a buffer tank. By adopting the carbon conversion system, air flow fluctuation is smoothed to a quasi-stable state by the buffer tank, so that stable air intake of the solid oxide electrolytic cell is guaranteed; reaction waste heat of the solid oxide electrolytic cell is guided for adsorbent regeneration, so that the overall energy consumption of the system is reduced; the cation doped and modified composite cathode can adapt to the dynamic fluctuation of the CO2 concentration in a wide range, and the operation stability of the system is improved.