221 results about "Co2 removal" patented technology

A system for removing carbon dioxide from a gas includes: an eductor, a CO2-lean gas outlet fluidly coupled to the eductor, a fan fluidly coupled to the CO2-lean gas outlet, the fan being rotatable to discharge the CO2-lean gas from the CO2-lean gas outlet, and a capture solution tank. The eductor includes a capture solution inlet operable to receive a lean capture solution, a gas inlet operable to receive the gas that includes carbon dioxide, a mixing zone configured to react the lean capture solution and the gas that includes carbon dioxide; and, an eductor outlet operable to discharge a mixed fluid that includes a rich capture solution and a CO2-lean gas. The capture solution tank is fluidly coupled to the eductor outlet and to the CO2-lean gas outlet, and the capture solution tank configured to collect the rich capture solution.

An exchange fluid having one or more amino acid for removing carbon dioxide from a solid sorbent and systems containing the same are disclosed. The exchange fluid may further include a neutralizing base for neutralizing the amino acid. The system may further employ an electrochemical cell to regenerate the exchange fluid by removing carbon dioxide from the exchange fluid without employing degrading temperatures and pressures.

Adsorbent reactors for removing carbon dioxide (CO2) from the atmosphere with several types of sealing door valves, ranging from a single valve element to multiple valve elements, are provided. The sealing door valves are configured to open to allow gases into the reactor, such as allowing ambient air to enter during adsorption, and can close to seal the reactor, such as allowing vacuum conditions to be created inside the reactor and / or steam to be injected into the reactor during desorption. The valves are designed to create minimum resistance to valve motion, minimum obstruction to gas flow when open, minimum allowance of fluid passage when closed, and to minimize dead space within the reactor.

The invention belongs to the technical field of carbon dioxide trapping, and particularly relates to a carbon dioxide trapping system and a carbon dioxide trapping method. Compared with a traditional thermal desorption method, the carbon dioxide trapping system based on external microwave field assisted absorbent catalytic desorption has the advantage that the microwave desorption method has higher energy utilization efficiency. The random packing catalyst has an acid catalysis function, so that the desorption amount and the carbon removal rate of the absorbent can be further improved, and the random packing catalyst has a microwave absorption function, so that heat and mass transfer in the desorption process is enhanced in a hot spot form, and the utilization of microwaves is further improved. The desorption efficiency of 60-80% can be achieved below 102 DEG C, the CO2 desorption rate is far higher than that of a traditional thermal desorption method, and latent heat consumed by water evaporation in the desorption process is remarkably reduced. Meanwhile, the CO2 removal efficiency of the absorption tower is improved, and the cost of the whole carbon capture process can be remarkably reduced.

A carbon sorbent for removing carbon dioxide from a gaseous material includes a surface composition including carbon, nitrogen, and oxygen. The nitrogen atoms at the surface of the carbon sorbent may be present in pyridone, pyrrole, and pyridine. The surface of the carbon sorbent may include lactone groups and pyrone groups. The carbon sorbent may have a bulk density greater than about 0.40 grams per cubic centimeter. The carbon sorbent may be formed using amino acids to provide the nitrogen for the carbon sorbent. In addition, the use of processing aids during the formation of the carbon sorbent facilitates the formation of a denser carbon sorbent. Related methods of forming the carbon sorbent and pellets of the carbon sorbent are also disclosed.

Technologies and techniques for producing a sorption element for removing carbon dioxide from ambient air. The method includes providing a carbon dioxide-binding starting material and a binder, mixing them to form a homogeneous mixture, and either molding the mixture into a sorption structure or coating a support structure with the mixture. The sorption structure or coated support structure is then thermally treated to solidify and / or chemically activate the sorbent material. The disclosed method enables the production of highly efficient sorption elements with enhanced thermal and electrical conductivity, which improve adsorption and desorption processes. The disclosure also includes systems and apparatus configured to perform this method, offering reduced material usage, improved energy efficiency, and customizable geometries for diverse applications.

A carbon sorbent for removing carbon dioxide from a gaseous material includes a surface composition including carbon, nitrogen, and oxygen. The nitrogen atoms at the surface of the carbon sorbent may be present in pyridone, pyrrole, and pyridine. The surface of the carbon sorbent may include lactone groups and pyrone groups. The carbon sorbent may have a bulk density greater than about 0.40 grams per cubic centimeter and may exhibit a carbon dioxide capacity of at least 11.0 weight percent at 30° C. and 760 mmHg. The carbon sorbent may be formed using amino acids to provide the nitrogen for the carbon sorbent. In addition, the use of processing aids during the formation of the carbon sorbent facilitates the formation of a denser carbon sorbent. Related methods of forming the carbon sorbent and pellets of the carbon sorbent are also disclosed.

A direct air capture (DAC) system configured to remove carbon dioxide directly from ambient air uses a stack of enclosures each containing DAC media such as activated carbon. The DAC media enclosures have doors that open to allow airflow through the enclosure in an adsorption cycle and close to seal the enclosures to enable captured carbon dioxide to be pumped from the enclosures in a desorption cycle. The DAC system interoperates with a dry cooler that is operatively coupled to a liquid-cooling system for cooling equipment in a data center. Dry cooler fans are configured for extra duty by flowing ambient air through the DAC media enclosures while also flowing air across dry cooler heat exchangers. The DAC system taps hot working fluid from the dry cooler to provide heat to the DAC media enclosures to facilitate the desorption cycle to release captured carbon dioxide into the sealed enclosures.

A carbon sorbent for removing carbon dioxide from a gaseous material includes a surface composition including carbon, nitrogen, and oxygen. The nitrogen atoms at the surface of the carbon sorbent may be present in pyridone, pyrrole, and pyridine. The surface of the carbon sorbent may include lactone groups and pyrone groups. The carbon sorbent may have a bulk density greater than about 0.40 grams per cubic centimeter. The carbon sorbent may be formed using amino acids to provide the nitrogen for the carbon sorbent. In addition, the use of processing aids during the formation of the carbon sorbent facilitates the formation of a denser carbon sorbent. Related methods of forming the carbon sorbent and pellets of the carbon sorbent are also disclosed.

Methods, devices, and systems are disclosed that capture carbon dioxide from ambient air and / or point source emissions and produce carbon dioxide from the captured atmospheric and / or point source carbon dioxide using one or more products of the carbon capture processes. Implementations filter atmospheric and / or point source impurities during the carbon capture process and in steps for producing a CO2 stream via chemical synthesis and optionally thermal generation. The integration of CO2 removal processes and chemical synthesis of CO2 synergistically combine to reduce and / or eliminate waste streams, resulting in efficient processes with low carbon emissions and reduced waste.

The invention provides an absorption tower, system and method for removing carbon dioxide and controlling escape of organic amine through an amine method. The absorption tower comprises an absorption section, a cooling amine condenser, a washing section and a first multi-layer demister. The system comprises the absorption tower, a regeneration tower, a heat exchanger, a primary condenser, a first gas-liquid separation tank, a secondary condenser and a second gas-liquid separation tank. The method comprises the following steps: enabling flue gas to enter an absorption tower, absorbing CO2 in the flue gas, and washing with water; the rich liquor enters a regeneration tower for regeneration and CO2 release after heat exchange, and the barren liquor enters an absorption tower after heat exchange; and the regenerated gas enters a condenser to be cooled and then is separated by a gas-liquid separation tank to obtain CO2 gas and condensed water, and the condensed water flows back to the regeneration tower. According to the invention, the escape of organic amine in the process of removing CO2 by using an amine method is reduced, the environmental pollution is effectively reduced, and the problem that the system operation cost is increased due to amine loss is reduced.

The present invention discloses a nitrogen isotope determination method for nitrogen in a gas sample, and relates to the technical field of isotope analysis, the method comprises: instrument performance pretreatment: before sample determination, determining that an instrument is in a stable working state by checking the vacuum degree, detecting the interference peak, tuning an ion source, and testing the stability and linearity of reference gas; according to the method, a glass sample bottle is adopted to collect a gas sample, and before collection, a bidirectional inert gas replacement-vacuumizing coupling sampling process is adopted to treat the sample bottle. Residual air in the sample bottle and air attached to the bottle wall are effectively removed, and the sample pollution risk is remarkably reduced; the CO2 adsorption trap adopts a gradient filling structure and is matched with a constant-temperature heating sleeve, so that the contact time of CO2 and an adsorption material is prolonged, meanwhile, the influence of adsorption heat release on the adsorption efficiency is avoided, and the CO2 removal rate is improved.

This disclosure relates to systems and methods for removing CO2 from flue gas. The system includes a first heat exchanger for receiving and cooling the flue gas, a compressor for increasing the pressure of the cooled gas, a second heat exchanger to further cool the compressed gas, and a drying unit for removing water from the cooled compressed gas. The system further includes a pressure swing adsorption unit for adsorbing CO2 from the dried, cooled compressed gas using an adsorption media, the adsorption unit comprising a vacuum compressor for pulling the CO2 off the adsorption media. A compressor may be used for extracting the CO2 from the tank and boosting the pressure of the CO2 gas.

A process for the production of hydrogen comprises: a first steam reforming step of a feedstock containing hydrocarbons to obtain a first synthesis gas; a first synthesis gas shift and cooling step on the first synthesis gas; a separation step for separating the first synthesis gas into a high concentration hydrogen stream and a tail gas stream; a second low pressure steam reforming step performed on the tail gas to obtain a second synthesis gas; a second synthesis gas shift and cooling step on the second synthesis gas; a CO2 removal step performed on the stream of hydrogen and carbon dioxide exiting the second synthesis gas shift and cooling step in order to separate a CO2 stream from a fuel grade hydrogen stream; a step of feeding at least a part of the fuel grade hydrogen stream to the first steam reforming step.

The invention discloses a furnace top gas cyclic reforming process and system, and the reforming process comprises the following steps: S1, heating furnace top gas generated by a blast furnace to 1000-1200 DEG C to obtain high-temperature gas; s2, mixing the high-temperature coal gas with coal, and carrying out electromagnetic induction heating coal gas reforming reaction to generate reduced coal gas which is 900-1000 DEG C and contains CO and H2; s3, performing plasma heating on the reduced gas to 1400-1800 DEG C to obtain high-temperature reduced gas; s4, recycling the high-temperature reduction coal gas to the lower part of the blast furnace for circular treatment; according to the method, a carbon capture device of a conventional oxygen blast furnace and a top combustion type gas heating furnace and a CO2 removal device of a carbon circulation blast furnace are replaced by circular reforming of the furnace top gas, so that the energy consumption and the equipment investment of the technological process are reduced.

A sorbent reactor system for removing carbon dioxide from air is provided. The sorbent reactor system facilitates improved energy and thermal efficiency and includes a cascading heat pump. The cascading heat pump includes a plurality of heat exchangers fluidly connected to each other via a pipe network. The plurality of the heat exchangers are microchannels coated with sorbent material capable of adsorbing carbon dioxide from ambient air, with sorbent heat exchangers then disposed in vacuum chamber reactors fluidly connected to each other. A first heat transfer fluid flows and recirculates through the pipe network and heat exchangers of a first heat pump, transferring heat away from hot sorbent undergoing a cooldown process under vacuum and towards cool sorbent undergoing a desorption process under vacuum. A second heat transfer fluid flows and recirculates through a second heat pump to transfer energy from ambient air to the first heat transfer fluid.

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.

The present application relates to the field of CO2 degassing research, and more particularly to a CO2 degassing process auxiliary research test device and method, wherein adjacent CO2 removal components are connected end to end by setting a flow monitoring assembly to form a channel for the sample solution to move in an S-shaped track. During the movement, the accelerating gas moves in a single direction and sequentially passes through all the CO2 removal components. The CO2 in the solution inside the CO2 removal component is separated into the degassing cavity by using the membrane technology, and is carried out of the device by the accelerating gas flow to realize CO2 degassing. The CO2 removal component can further accelerate CO2 removal by the synchronous action of the forward and reverse rotation of the removal cylinder and the cleaning of the stirring element, and can also clean the carbon dioxide separation membrane. The flow monitoring assembly can segmentally monitor and adjust the sample solution, and master the carbon dioxide balance and temperature data of the solution at different positions, so as to facilitate the research on the CO2 degassing process of different sample solutions. The research data is rich, the device is easy to operate, and the maintainability and accuracy are good.

The invention relates to a method and a system for removing carbon dioxide from vinyl acetate raw material gas. The method comprises the following steps: condensing a circulating gas material flow from a vinyl acetate generation system to form a gas-liquid two-phase material flow; the gas-liquid two-phase material is washed, a washed gas-phase material flow and a washed liquid-phase material are obtained, and the washing operation comprises the steps that vinyl acetate in the gas-liquid two-phase material flow is removed through an acetic acid aqueous solution, and acidic components in the gas-liquid two-phase material flow are removed through fresh water; one part of the washing gas-phase material flow is led out as exhaust gas, the other part of the washing gas-phase material flow is in countercurrent contact with CO2 removal liquid, and after carbon dioxide removal, the washing gas-phase material flow is sent back to a vinyl acetate generation system and used for participating in a vinyl acetate generation reaction; and carrying out recovery and regeneration treatment on the CO2 removal liquid participating in carbon dioxide removal. According to the invention, efficient removal of carbon dioxide in the feed gas circulated to the vinyl acetate generation system and recovery of vinyl acetate can be realized, so that the conversion rate of vinyl acetate is improved.

The present disclosure provides systems and methods for performing amine capture on a heated flue gas using multiple rotating packed beds. The equipment footprint and overall equipment volume required for CO2 capture can be significantly reduced by integrating a series of rotating packed beds to perform cooling of the flue gas, removing CO2 from the flue gas by contacting with an aqueous amine solution, and scrubbing the gaseous effluent from the CO2 removal step to remove any entrained amine. The integration of cooling, CO2 removal, and scrubbing may be partially integrated into a series of packed beds by using different packing materials in various packed beds.

Systems and methods for producing hydrogen with reduced carbon intensity by generating work from expansion of high-pressure produced hydrogen. An expander with a rotating output shaft can be used to convert the expansion of hydrogen into useful work in the form of rotation (torque) of the output shaft, and also utilizes the low temperature of expanded hydrogen as a cooling media to cool a process fluid such physical solvent(s) used for CO2 removal.

The invention provides an apparatus and method for producing a hydrogen rich gas, the method comprising the steps of reforming a hydrocarbon feed in an autothermal reformer to obtain a synthesis gas; shifting the synthesis gas in a shift configuration comprising a high temperature shift step; removing CO2 in a CO2 removal section by amine washing to form a hydrogen rich stream, wherein a portion is used as a low carbon hydrogen fuel; and forming a CO2 rich gas stream and a high pressure flash gas stream. The high pressure flash gas stream is advantageously integrated into the apparatus and method to further improve carbon capture.

Described is an apparatus for oxygenation and / or CO2 clearance of a patient, comprising: a flow source or a connection for a flow source for providing a gas flow, a gas flow modulator, a controller to control the gas flow, wherein the controller is operable to: receive input relating to heart activity and / or trachea gas flow of the patient, and control the gas flow modulator to provide a varying gas flow with one or more oscillating components with a frequency or frequencies based on the heart activity and / or trachea flow of the patient.

The present invention relates to a process for removing carbon dioxide from a synthesis gas having at least hydrogen and carbon dioxide in which the synthesis gas is at least partially freed of carbon dioxide in an absorption apparatus by physical absorption at elevated absorption pressure. The carbon dioxide is subsequently desorbed by pressure reduction relative to the absorption pressure in a plurality of serially arranged flash stages and an at least partially regenerated absorption medium is withdrawn from the last of the plurality of serially arranged flash stages, recompressed to absorption pressure and recycled into the absorption apparatus for use as absorption medium. It is also provided according to the invention that a partially regenerated absorption medium from a flash stage upstream of the last of the plurality of serially arranged flash stages is recompressed to absorption pressure and recycled into the absorption apparatus for use as absorption medium.

A method for controlling carbon dioxide [CO2] removal in a device (5) for extracorporeal blood gas exchange is disclosed. The device (5) comprises an oxygenator (21) including a membrane (23) acting as a gas-liquid barrier enabling CO2 transfer between a bloodstream and a sweep gas flow through the oxygenator. The method comprises the steps of adding (S1) CO2 to the sweep gas flow upstream of the oxygenator (21) to control a degree of CO2 removal from the bloodstream by the oxygenator, determining (S2) a measure of CO2 removal by the oxygenator (21) based on a difference [ΔCCO2blood] between a measure of a pre-oxygenator content of CO2 [CCO2in] in the bloodstream upstream of the oxygenator (21) and an estimate of a post-oxygenator content of CO2 [CCO2out] in the bloodstream downstream of the oxygenator (21), and utilizing (S3) the measure of CO2 removal for improved regulation of the CO2 addition to the sweep gas flow.

The disclosure relates to a carbon dioxide catcher (100) comprising: two reactors (110a, 110b), each reactor comprising at least one cassette (120a, 120b) with a carbon capture material; and a process air circuit (S1) configured to conduct process through each reactor (110a, 110b), wherein the carbon dioxide catcher (100) further comprises a pair of valves (150a, 150b) configured to conduct process air through one reactor (110a, 110b) at a time, wherein the carbon dioxide catcher (100) further comprises a control unit (160) configured to control the valves (150a, 150b) such that the process air is switched from being conducted through one of the reactors (110a, 110b) to the other based on a carbon dioxide level in the process air downstream of the reactors (110a, 110b). The disclosure further relates to a method (200) for removing carbon dioxide from process air conducted through a carbon dioxide catcher (100) and a computer program.

This CO2 removal device for removing CO2 from a gas is provided with: a cylindrical housing; a plate-shaped first carrier for supporting, on the surface thereof, an adsorbent that adsorbs CO2, the first carrier being disposed inside the housing; and a plate-shaped second carrier for supporting, on the surface thereof, an adsorbent that adsorbs CO2, the second carrier being disposed inside the housing such that a gas flow path for circulating the gas is formed between the first carrier and the second carrier. The first carrier includes at least one first ridge portion that protrudes toward the second carrier and extends inside the gas flow path so as to be inclined at a first angle with respect to the extending direction of the housing. The second carrier includes at least one second ridge portion that protrudes toward the first carrier so as to be in contact with the first ridge portion and extends inside the gas flow path so as to be inclined at a second angle that intersects a direction in which the first ridge portion extends and is different from the first angle with respect to the extending direction.

In a general aspect, interfacial surface structures for removing carbon dioxide from a gaseous feed are presented. In some cases, a method of removing carbon dioxide gas from a gaseous feed includes wetting surfaces of an interfacial surface structure in a gas-liquid contactor with an alkaline capture solution. The gaseous feed containing the CO2 gas is passed across the wetted surfaces of the interfacial surface structure to dissolve the CO2 gas in the alkaline capture solution. A CO2-rich alkaline capture solution is collected from the gas-liquid contactor. The CO2-rich alkaline capture solution includes dissolved CO2 gas from the gaseous feed.

A device, method, and system for CO2 capture is disclosed. The method includes receiving a process vapor including water and CO2 into a vessel at an intake pressure, the vessel having a desiccant and a CO2 sorbent material. The method includes passing the process vapor through the desiccant and sorbent, the desiccant absorbing the water resulting in a dry vapor, the sorbent absorbing CO2 from the dry vapor resulting in a CO2-lean dry vapor. The method includes discontinuing the process vapor, desorbing the water from the desiccant by at least one of reducing pressure downstream from the desiccant to below the intake pressure and increasing a temperature of the desiccant, desorbing the CO2 from the sorbent by placing the desorbed water in contact with the sorbent, removing the desorbed CO2 through the product outlet as a product stream, and desorbing a remaining water from the desiccant and the sorbent.

The purpose of the present invention is to provide a cell culturing device and a cell culturing method that enable simultaneous removal of carbon dioxide in a liquid phase and a gas phase, sufficient removal of carbon dioxide in the liquid phase, preferential degassing of carbon dioxide in the gas phase over oxygen to facilitate retention of oxygen in a system, and that have high culture efficiency. The present invention provides a cell culturing device comprising: a culture vessel in which a liquid phase, which is a culture solution containing cells, and a gas phase are encapsulated; and at least one gas separation membrane module disposed in the culture vessel. The gas separation membrane module includes a gas separation membrane capable of separating carbon dioxide, and a housing case to which the gas separation membrane is fixed. The gas separation membrane in the culture vessel is installed such that a part of the gas separation membrane is exposed to the gas phase and the remainder is immersed in the liquid phase.