277 results about "Co2 removal" patented technology

A system for capturing carbon dioxide from flue gas produced by a coke oven includes a coke oven system and a capture system. The coke oven is configured to process coal to produce coke and a flue gas comprising carbon dioxide. The coke oven includes an induced draft fan positioned downstream of the coke oven. The induced draft fan is configured to provide a vacuum to the coke oven and move the flue gas away from the coke oven. The coke oven system also includes a stack open to atmosphere and downstream of the induced draft fan. The capture system is fluidically coupled to the coke oven system at a point between the coke oven and the stack. The capture system is configured to remove carbon dioxide from the flue gas.

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.

The invention provides a process method and system for directly capturing carbon dioxide from air and converting and utilizing the carbon dioxide. The process method comprises the following steps: adsorbing raw material gas through a carbon dioxide trapping device, and heating and desorbing to obtain purified carbon dioxide gas; the purified carbon dioxide gas and the electrolyte are subjected to electrocatalytic conversion to obtain synthesis gas, oxygen and condensate water, and the condensate water is recycled through water treatment operation to be used for supplementing the electrolyte; the method comprises the following steps: carrying out Fischer-Tropsch synthesis reaction, hydrocracking and isomerization reaction on synthesis gas to obtain an isomerized oil-gas mixture, wherein heat energy generated by the reaction provides heating desorption heat; and carrying out gas-liquid separation on the heterogeneous oil-gas mixture to obtain combustible gas and an upgraded oil product, carrying out rectification operation on the upgraded oil product to obtain an SAF component and a heavy oil product, and carrying out oxygen-enriched combustion reaction on the combustible gas and oxygen to provide heating desorption heat or supply required heat energy. An integrated and flexible industrial technology platform is developed, carbon capture and conversion processes are seamlessly connected, full-chain optimization from CO2 removal to high-added-value product generation is realized, and self heat energy requirements and wastewater utilization can be met.

The present application relates to the field of carbon capture. Embodiments of the present application provide systems, devices, and methods relating to metal hydroxide looping for capturing atmospheric carbon dioxide. Related systems for the electrolytic production of acids and bases for chemical processing and for materials handling are also described.

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.

The invention provides condensation and pre-concentration equipment for trace organic gas and a treatment method thereof, and the condensation and pre-concentration equipment comprises a water vapor removal device which is used for removing impurity gas mainly containing water in sample gas; the carbon dioxide removal device is used for removing carbon dioxide in the sample gas; the trapping trap device comprises a first trapping trap and a second trapping trap, and the second trapping trap is connected with the carbon dioxide removal device and is used for trapping the sample gas subjected to carbon dioxide removal; the temperature control device is used for controlling the temperature of the water vapor removal device and the trap device; the valve group device comprises a plurality of valves which are multi-channel switching valves and are at least used for introducing sample gas and dry gas; the carrier gas input device comprises a first path of carrier gas, a second path of carrier gas and a third path of carrier gas, the first path of carrier gas is used for driving a sample to transfer, the second path of carrier gas is used for driving sample gas to enter an analytical instrument for detection, and the third path of carrier gas is used for back-blowing carbon dioxide in the carbon dioxide device; and the analysis device is used for analyzing the sample gas.

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 dehumidifier comprising housing (10, fig. 1) featuring an air inlet (20, fig 1) and air outlet (21, fig. 1) coupled together via a channel, with one or more fans positioned within the channel to draw an airflow through the housing. Inside the housing, there are two systems; a dehumidifying system (10, fig. 1) configured to remove moisture from the airflow and a carbon capture system (40, fig.1 ) positioned in the channel downstream from the dehydration system and configured to remove carbon dioxide from the airflow. The carbon capture system may comprise a cartridge containing a porous, regenerative carbon dioxide sequestering material 46 such as a zeolite or melamine. The cartridge may comprise a weight sensor 47 and processor, configured to monitor the saturation of the carbon capture material by determining its weight. A hemi cylindrical dehumidifier cartridge is also described.

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.

The invention relates to a calcium-based carbon capture system and method combining CO2 capture and energy storage for a power station boiler. The invention relates to the technical field of power station boiler calcium-based carbon capture, and relates to the technical field of power station boiler calcium-based carbon capture, the principle that CaCO3 is decomposed into CaO and CO2 for heat absorption is utilized to realize desorption and separation of CO2 and convert crest redundant electricity of new energy into chemical energy, and the principle that CaO and CO2 are combined for heat release is utilized to capture CO2 from exhaust smoke of a power station boiler and convert chemical energy into heat energy. And feeding into a downstream system for utilization. Therefore, the goal of combining CO2 capture and energy storage is achieved. Thermal power can be better coupled with new energy, the peak load shifting effect is achieved, the power supply pressure in the peak period of a power grid is relieved, the stability of the power grid is improved, meanwhile, low-cost CO2 removal is achieved, the advantage of low price of valley electricity is utilized, and the operation or heat supply cost is reduced.

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.

The power generation system comprises a fuel cell unit adapted to generate electric power using a hydrocarbon-containing gas. A water-gas shift reactor is adapted to receive flue gas from the fuel cell unit and convert carbon monoxide contained in the flue gas into carbon dioxide and hydrogen. A cryogenic carbon dioxide capture unit is adapted to receive flue gas from the water-gas shift reactor and remove carbon dioxide therefrom. A recycle line recycles carbon dioxide-depleted flue gas to the fuel cell unit.

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.

Various embodiments of an integrated system for capturing carbon dioxide and converting it into at least one useful product is described herein. Carbon dioxide, in some embodiments, can be captured via liquid mist, separated from a gas stream electrostatically, and converted into at least one product using any of myriad of conversion apparatuses. In some embodiments, the integrated system can remove carbon dioxide from a combustion exhaust stream.

Embodiments of the present disclosure are directed to systems and methods of removing carbon dioxide from a gaseous stream using magnesium hydroxide and then regenerating the magnesium hydroxide. In some embodiments, the systems and methods can further comprise using the waste heat from one or more gas streams to provide some or all of the heat needed to drive the reactions. In some embodiments, magnesium chloride is primarily in the form of magnesium chloride dihydrate and is fed to a decomposition reactor to generate magnesium hydroxychloride, which is in turn fed to a second decomposition reactor to generate magnesium hydroxide.

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.

A spoked capture system with a plurality of capture structure segments. Each capture structure segment may comprise a hub, a rim, a plurality of spokes, and a sorbent. The hub is positioned at a center of the capture structure segment. The rim extends circumferentially around the hub and is radially offset from the hub. The rim may define a capture space from which the capture structure segment is configured to remove carbon dioxide from the ambient air. The spokes extend between the rim and the hub and connect to the rim to the hub. The sorbent covers the capture space and is supported by the rim and the spokes.

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.