24 results about "Carbon dioxide absorbent" patented technology

The invention relates to the technical field of carbon dioxide capture, and discloses a carbon dioxide absorbent and a preparation method thereof, and the carbon dioxide absorbent comprises the following components by weight: 10-15 parts of diethylenetriamine and 2-3 parts of modified mesoporous silica. According to the invention, through a synergistic adsorption mechanism of diethylenetriamine and modified mesoporous silica, a relatively good CO2 capture capability is realized; the cage-shaped structure of the modified mesoporous silica has a high specific surface area and ordered pore channels, and provides sufficient loading sites and diffusion channels for diethylenetriamine; meanwhile, an amino auxiliary (containing a plurality of primary amine and secondary amine groups) introduced in the modification process and a polyamine structure of diethylenetriamine form an amino cluster, and a better adsorption effect is achieved.

The invention discloses a lithium hydroxide granulation process of a carbon dioxide absorbent, and relates to the technical field of lithium hydroxide granulation, uniform particle size distribution is beneficial to dispersion and reaction uniformity in the subsequent processing process, the problem of inconsistent product performance caused by particle size difference is avoided, and the test of a universal material testing machine shows that the lithium hydroxide granulation process can be used for preparing lithium hydroxide granules. The average compressive strength of the prepared lithium hydroxide particles is 5N / particle, and the lithium hydroxide particles have better mechanical strength, are not easy to break in the storage, transportation and industrial processing processes, can effectively reduce the generation of dust, reduce the risk of environmental pollution, ensure the quality stability of the product and meet the basic requirements on the particle strength in actual production. After the product is placed in an environment with the humidity of 70% for 24 hours, the weight gain rate of the particles is increased by 50-70%, and compared with ungranulated powdery lithium hydroxide, the hygroscopicity is remarkably improved, which is benefited from the micropore loose structure of the particles and the protective effect of the binder, the storage stability of the product in a humid environment is effectively improved, and the absorption function of the product on carbon dioxide in air is increased.

The present invention relates to the technical field of carbon dioxide capture. Disclosed are a carbon dioxide capture system and method, and the use. The carbon dioxide capture system comprises a pretreatment unit, an absorption unit and a heat exchange unit, wherein the pretreatment unit is configured to remove dust from flue gas containing carbon dioxide, and comprises a cyclone separator, the cyclone separator being provided with a liquid-phase feeding member for distributing a washing liquid in a mist form and a cyclone structure for making the flue gas form a cyclone to come into contact with the washing liquid; the absorption unit is in communication with a gas-phase outlet of the pretreatment unit, and is configured to bring a carbon dioxide absorbent into contact with the flue gas to form a rich solution; a desorption unit is connected to a rich solution outlet of the absorption unit, and is configured to desorb carbon dioxide from the rich solution under hypergravity and obtain a lean solution; and the heat exchange unit is configured to collect heat from materials discharged from the desorption unit. The present invention has the advantages of a low cost and a low energy consumption.

The invention discloses preparation and application of a carbon dioxide absorbent, relates to the technical field of absorbents, and discloses a novel phase change type CO2 absorbent prepared by mixing ionic liquid hydroxyethyl ethylenediamine imidazole-amino acid as a main absorbent, ethanolamine / piperazine as an accelerant, n-butyl alcohol as a phase splitting agent and a certain amount of water. The absorption capacity is high, the regeneration energy consumption can be greatly reduced while the absorption efficiency is ensured, and the stability is good; meanwhile, the carbon capture performance testing device is designed into a movable skid-mounted type, and the two-phase separator which is wide at the upper part and narrow at the lower part is utilized, so that phase splitting can be quickly realized, the device can be easily connected with an industrial production side line, and the industrial performance of the absorbent can be quickly verified.

The invention discloses a two-phase carbon dioxide absorbent based on ionic liquid and application of the two-phase carbon dioxide absorbent. The two-phase carbon dioxide absorbent based on the ionic liquid is prepared from 9 to 21 parts of tetramethyl ammonium hydroxide glutamate, 14 to 21 parts of diethylenetriamine, 50 to 65 parts of N, N-dimethylethanolamine and 9 to 11 parts of water. According to the absorbent, the CO2 loading capacity is improved through the synergistic effect of an alkaline site of the ionic liquid and amine in the absorption stage, and an acid site of the ionic liquid serves as a built-in proton donor in the regeneration stage to promote decomposition of an absorption product, so that high absorption capacity and low regeneration energy consumption are synergistically achieved. The absorbent is high in COO absorption capacity, low in regeneration energy consumption, low in regeneration temperature and good in cycling stability, and an innovative solution is provided for solving the high-energy-consumption bottleneck of a traditional amine method carbon capture technology.

The present invention relates to a method for producing a carbon dioxide absorbent and a desulfurization catalyst, the method comprising the steps of: (S10) introducing an illite powder into a reaction bath storing water heated to 40 to 100° C., followed by stirring; (S20) introducing sodium hydroxide into the reaction bath, followed by stirring; (S30) separating and filtering a supernatant from the reaction bath; and (S40) separating a precipitate from the reaction bath.

The present invention relates to a method for the co-pyrolysis of biomass and mineral raw materials for activating the mineral raw materials and to the use of the resulting pyrolysis product in the construction industry, in horticulture and landscaping, as a carrier and filter material, in energy storage technology, and as a CO2 sink.

1. The name of this design product: carbon dioxide absorbent tank. 2. Purpose of this design product: used to absorb and eliminate carbon dioxide in the air in a pressurized cabin. 3. The key point of the design of this product lies in its shape. 4. The picture or photo that best illustrates the design points: three-dimensional picture.

A contaminant removal system for removing contaminants from an environment includes a water management system and a carbon dioxide removal system. The water management system is configured to remove water from a cabin air stream using a first liquid sorbent to produce a dehumidified cabin air stream, and includes a water scrubber and a water stripper. The carbon dioxide removal system is configured to remove carbon dioxide from the dehumidified cabin air stream using a second liquid sorbent, and includes a carbon dioxide scrubber and a carbon dioxide stripper.

To provide a respiratory function measuring device capable of coping with an increase in carbon dioxide concentration.SOLUTION: A respiratory function measuring device 1 includes: a sealed container part in which a piston 12 moves relative to a container part 11 according to an increase / decrease in the volume of gas put inside in an airtight manner; a first tube part 21, a second tube part 22, and a mouthpiece connection part 23 connected to the sealed container part; a fan 30 for generating an air flow in the first tube part 21, the second tube part 22, and the sealed container part; a carbon dioxide absorbent provided in an influence range of the air flow; a potentiometer 15 for generating output according to the volume of the gas in the sealed container part; an oxygen cylinder B2 for supplying oxygen inside the sealed container part according to the volume of carbon dioxide absorbed by the absorbent; a supply part 40; a connection tube 50; a determination part for performing determination on the amount of oxygen supplied inside the sealed container part; and a notification part for performing notification according to a result of the determination by the determination part.SELECTED DRAWING: Figure 1

The application provides a polyurethane mortar floor paint, which comprises the following components: component A: high-functionality castor oil modified polyol, low-functionality castor oil modified polyol, surfactant, polyether polyol, water; component B: high-functionality castor oil modified polyol, low-functionality castor oil modified polyol, single-walled carbon nanotube, dispersant, surfactant, water; component C: isocyanate curing agent; component D: sand, cement, carbon dioxide absorbent; component E: color paste; the functionality of the high-functionality castor oil modified polyol is 2.0-3.5, and the viscosity of the high-functionality castor oil modified polyol at 25 DEG C is 200-1000 mPa.s; the functionality of the low-functionality castor oil modified polyol is 1-1.2, and the viscosity of the low-functionality castor oil modified polyol at 25 DEG C is lower than 40 mPa.s. The high-gloss long-acting anti-static polyurethane mortar floor paint has excellent and long-lasting conductive performance, can be thinned for construction, realizes high-gloss coating, and is suitable for more scenes.

The present invention aims to provide an indoor carbon dioxide recovery device that is installed indoors and recovers carbon dioxide contained in the air. [Solution] An indoor carbon dioxide recovery device 1 for recovering carbon dioxide contained in the air, installed indoors, comprises a hollow housing 2 and a carbon dioxide absorbent 3 disposed inside the housing 2. Furthermore, it is provided with a first opening 21 communicating with the lower side of the internal space of the housing 2 and a second opening 22 communicating with the upper side of the internal space inside the housing 2.

In this carbon dioxide immobilization method, a cured cement body (10) is impregnated with a carbon-dioxide-absorbing liquid containing a carbon dioxide absorbent (20) in order to support the carbon dioxide absorbent (20) on the cured cement body (10) and obtain a cured cement body (1) for carbon dioxide immobilization; and the cured cement body (1) for carbon dioxide immobilization is brought into contact with the atmosphere and the carbon dioxide contained in the atmosphere is immobilized in the cured cement body (1) for carbon dioxide immobilization.

Provided are: a carbon dioxide absorbent comprising a non-azo solid amine compound (A) having two or more aromatic rings and two or more primary amino groups; a method for recovering carbon dioxide using the carbon dioxide absorbent; and an apparatus for separating and recovering carbon dioxide.

A regenerable carbon dioxide scrubber includes at least a first housing compartment including an inlet, an outlet, and an interior region. A sorbent material is located within the interior region of the first housing compartment, in which the sorbent material (a) attracts and / or retains carbon dioxide from an air supply passing through the sorbent material at an operating temperature below about 100° C. and (b) releases carbon dioxide at a regenerating temperature above about 150° C. A rebreather including the regenerable carbon dioxide scrubber may be used to scrub carbon dioxide from a user's exhaled air.

The invention provides a carbon dioxide absorbent performance evaluation system, which is characterized in that an integrated evaluation platform comprising a gas source system, an absorption system and a measurement system is constructed by integrating multi-gas-source dynamic mixing, gas-liquid quality real-time monitoring and data automatic analysis technologies; the proportion of carbon dioxide and other gas components in simulated flue gas is accurately regulated and controlled through a gas mass flow meter, the overall mass change of gas and liquid in a gas washing bottle is continuously recorded through a weighing table with a heating function, and a dynamic absorption amount curve is generated in combination with temperature control and a data collection device; finally, the effects of simplifying the evaluation process, greatly reducing the time and equipment cost of an absorbent preliminary screening stage and avoiding traditional complex analysis steps are achieved, meanwhile, the absorption performance is directly quantified by monitoring the gas-liquid mass change in real time, the evaluation efficiency and accuracy are remarkably improved, and the method is suitable for popularization and application. And the potential harm to the health of experimenters caused by escape of amine reagents is reduced.

This invention relates to the field of carbon dioxide capture technology and discloses a carbon dioxide absorbent and its preparation method, comprising the following weight components: 10-15 parts by weight of diethylenetriamine and 2-3 parts by weight of modified mesoporous silica. This invention achieves good CO2 capture capacity through the synergistic adsorption mechanism of diethylenetriamine and modified mesoporous silica. The cage-like structure of the modified mesoporous silica has a high specific surface area and ordered pores, providing sufficient loading sites and diffusion channels for diethylenetriamine. Simultaneously, the amine auxiliary agent (containing multiple primary and secondary amine groups) introduced during the modification process forms an "amine cluster" with the polyamine structure of diethylenetriamine, resulting in a better adsorption effect.

A method for reusing a carbon dioxide absorbent material according to one embodiment of the present disclosure comprises supplying a structure that contains one or more carbon dioxide absorbent materials, which have absorbed carbon dioxide, to a supply-receiving object, and the carbon dioxide absorbent material is a metal or a metal compound.

This disclosure relates to a method for treating substances ranging from 1.0 to 1.2 kg / cm³. 2 A method for regenerating a carbon dioxide absorbent solution using vapor condensate generated by a high-pressure regenerator (57) operating under pressure. The method includes the steps of: a) capturing carbon dioxide in a carbon dioxide absorption (56) unit using the carbon dioxide absorbent solution; b) feeding the absorbed carbon dioxide and the carbon dioxide absorbent solution generated in step a) into the high-pressure regenerator (57); and c) applying a vapor condensate at a pressure ranging from 3.2 to 3.5 kg / cm³. 2 Low-pressure steam is supplied to a steam reboiler (58) under pressure to provide heat to the high-pressure regenerator (57), thereby producing steam condensate and regenerated carbon dioxide absorbent solution; and is characterized by further comprising the step of: d) supplying the steam condensate produced in step c) to a degasser (59) to produce an aqueous solution suitable for producing steam with an oxygen content ranging from 7 ppb to less than 20 ppb. This disclosure further relates to a system for performing the methods of this disclosure and to the use of the system in performing the methods of this disclosure. This disclosure further relates to a method for modifying a system further comprising a process condensate stripper and a water demineralization unit to a disclosed system.

This invention relates to the field of air carbon capture technology, and more particularly to a solar photovoltaic-driven temperature-dependent adsorption air carbon capture device; it includes a gas channel, a carbon dioxide absorbent carrier, an air supply unit, a waste heat recovery unit connected to the outlet of the gas channel, and a storage device connected to the outlet of the waste heat recovery unit. This application uses a conductive porous material (such as nickel foam) as the absorbent carrier. The carrier itself is directly heated by Joule heat generated by electricity, and almost all the heat is used for the heating and desorption of the absorbent, avoiding heat loss from indirect heating. The thermal efficiency can reach over 90%, significantly reducing energy consumption. This application includes a waste heat recovery unit that uses the high-temperature exhaust gas after desorption to heat the heat-conducting medium in the heat storage working fluid chamber. The heat medium is then circulated to the heating jacket around the gas channel by a pump, preheating or insulating the channel before the next adsorption cycle, further reducing heating power and achieving cascaded energy utilization.

This invention relates to the field of carbon dioxide capture technology, and discloses a method and system for regenerating carbon dioxide absorbent and capturing carbon, as well as their applications. The method includes: regenerating the carbon dioxide absorbent in a regeneration device; returning a portion of the regenerated gas to the regeneration device; and purifying the remaining portion. Specifically, based on the total weight of the regenerated gas, the content of the portion of regenerated gas is 20-90 wt%, and the content of the remaining portion is 10-80 wt%. This method significantly reduces the energy consumption for regenerating the carbon dioxide absorbent and significantly improves the regeneration efficiency. Furthermore, the system uses a heat exchanger instead of a traditional regeneration tower and reboiler, saving equipment space.

The invention relates to a method for providing a hydrogen stream (7) in a facility (2) for providing the hydrogen stream (7), wherein a carbon-containing energy carrier stream (3) is fed to a syngas reactor assembly (4) in order to obtain a syngas stream (5) comprising hydrogen and carbon oxides, the syngas reactor assembly (4) obtains the syngas stream (5) from the energy carrier stream (3) by means of an autothermal reforming process, the syngas stream (5) is fed to a shifting apparatus (15a-c), a water-gas shift reaction taking place in the shifting apparatus (15a-c) in order to react at least part of the carbon monoxide of the syngas stream (5) with steam from the syngas stream (5) in order to form carbon dioxide and hydrogen, the syngas stream (5) is fed, downstream of the shifting apparatus (15a-c), to a carbon dioxide scrubber (30) in order to scrub at least part of the carbon dioxide from the syngas stream (5), a flash gas stream is released from a regeneration stage of the carbon dioxide scrubber (30), said flash gas stream being fed to a heating device of the facility (2) for an underfiring process, and the syngas stream (5) is at least partly fed, downstream of the carbon dioxide scrubber (30), to a separating assembly (6) in order to separate the syngas stream (5) at least into a hydrogen stream (7) comprising hydrogen and a carbon oxide-containing exhaust gas stream (8). The method is characterized in that, prior to being fed to the syngas reactor assembly (4), the energy carrier stream (3) is fed to a saturation stage (11), in which preheated condensate (12) accumulated in the facility (2) is fed to the energy carrier stream (3), and in that during the process of feeding the syngas stream to the shifting apparatus (15a-c), at least 80% of the steam fraction of the syngas stream (5) is already present as the syngas stream (5) exits the syngas reactor assembly (4). The invention likewise relates to a corresponding facility (2) for providing a hydrogen stream (7).

The utility model discloses an application system of a carbon dioxide absorbent, relates to the technical field of absorbents, and discloses a novel phase change type CO2 absorbent prepared by mixing ionic liquid hydroxyethyl ethylenediamine imidazole-amino acid serving as a main absorbent, ethanolamine / piperazine serving as an accelerant, n-butyl alcohol serving as a phase splitting agent and a certain amount of water. The absorption capacity is high, the regeneration energy consumption can be greatly reduced while the absorption efficiency is ensured, and the stability is good; meanwhile, the carbon capture performance testing device is designed into a movable skid-mounted type, and the two-phase separator which is wide at the upper part and narrow at the lower part is utilized, so that phase splitting can be quickly realized, the device can be easily connected with an industrial production side line, and the industrial performance of the absorbent can be quickly verified.

The ammonia production system comprises a syngas compressor upstream from the ammonia synthesis module includes an ammonia reactor. The ammonia reactor is fluidly coupled to the chiller which is in fluid communication with a carbon dioxide scrubber. The scrubber removes unreacted syngas. The unreacted syngas is recycled through a IGV controlled recycle compressor using a fixed speed driver. The delivery side of the recycle compressor is in fluid communication with the ammonia reactor. A portion of the recycle stream is delivery through an expander to the syngas make up compressor.