868 results about "Co2 absorption" patented technology

The present application relates to hydrogen production technology field, especially to a kind of methanol hydrogen production method, comprising the following steps: S10: methanol water is heated and vaporized to obtain methanol water vapor;S20: methanol reforming reaction obtains hydrogen mixture gas;S30: after cooling treatment to hydrogen mixture gas, through water washing tower absorption unreacted methanol water, then, adjust the relative humidity and temperature of hydrogen mixture gas;S40: hydrogen mixture gas is input into carbon dioxide absorption tower to remove carbon dioxide;S50: after removing carbon dioxide, product hydrogen is obtained and input hydrogen tank storage to supply user end.The above-mentioned methanol hydrogen production method, by methanol water vapor reforming hydrogen treatment, obtains hydrogen mixture gas.Again, hydrogen mixture gas is purified to obtain product hydrogen with very low carbon monoxide content, with raw material easy to transport, the hydrogen purity of output is high, equipment construction cost is low, and energy consumption is low and the like advantages, reach the purpose of expanding hydrogen application range.

The present invention relates to a system, apparatus, and method for the dual-purpose functionality of capturing carbon dioxide (CO2) from atmospheric and flue gas sources and concurrently generating electrical energy. More specifically, this patent application focuses exclusively on the non-ionized hydrogen gas turbine variant of the apparatuses and methods for capturing carbon dioxide and electrical energy generating system invention. The invention embodies an integrated system designed for the efficient capture of CO2 and simultaneous production of clean electricity. To simultaneously generate electric power at maximum efficiency and capture carbon dioxide, the present invention comprises different integrated processes, integrated systems, and techniques. The present system comprises; a non-ionized hydrogen gas turbine system unit, a carbon dioxide capturing system unit, a hybrid solar Hydrogen-Oxygen gas generator system system unit and waste heat recovery system unit. Moreover, the system comprises waste-heat-based carbon dioxide absorption and waste-heat-based regeneration sub-units to power carbon dioxide capturing parts by waste heat. All the systems of units are developed, integrated, hybrid, and co-functionally working to simultaneously enhance both CO2 capture efficiency and electricity generation. Through these integrated processes, systems, and techniques, the invention aims to generate and maximize clean electrical power output while effectively capture CO2 and reducing CO2 emission impacts on the environment with a dual solution approach. The invention further includes various alternative embodiments, and invention versions for versatile application in CO2 capture and energy production fields.

Provided is a method for collecting carbon dioxide which includes a step in which air is brought into contact with spray water and thereafter brought into contact with a carbon dioxide absorbent to make the carbon dioxide absorbent absorb the carbon dioxide contained in the air, the method being characterized in that the spray water has an acid consumption (pH 4.8) of 20 mgCaCO3 / L or greater. In cases when the spray water has an acid consumption (pH 4.8) less than 20 mgCaCO3 / L, a basic substance is added to the spray water so that the spray water comes to have an acid consumption (pH 4.8) of 20 mgCaCO3 / L or greater.

The invention belongs to the field of carbon dioxide absorption and provides carbon dioxide absorption liquid and application thereof and a method for treating carbon dioxide. The carbon dioxide absorption liquid comprises water, a thermodynamic accelerant and a dynamic accelerant, the dynamic accelerant comprises amino modified graphene oxide, and the amino modified graphene oxide is tertiary amino modified graphene oxide. The reaction between the carbon dioxide absorption liquid and carbon dioxide has a high hydrate generation rate, and the separation efficiency of carbon dioxide can be improved.

The invention discloses a low-energy-consumption anhydrous nanofluid composite carbon capture absorbent as well as a preparation method and application thereof, belongs to the technical field of absorption environment protection and gas purification, and solves the technical problems of poor carbon dioxide absorption capacity, high energy consumption in a desorption process and the like of a carbon capture solvent in the prior art. The carbon capture absorbent provided by the invention comprises 25 wt%-40 wt% of an organic amine compound, 0.03 wt%-0.08 wt% of nanoparticles and the balance of an organic solvent. The preparation method of the carbon capture absorbent comprises the step of uniformly mixing the organic amine compound, the nano-particles and the organic solvent according to a specified amount to obtain the carbon capture absorbent. The invention discloses an application of the carbon capture absorbent in capturing carbon dioxide in industrial flue gas. The carbon capture absorbent provided by the invention realizes high-efficiency absorption of carbon dioxide in industrial flue gas and high-efficiency desorption at high temperature, and effectively solves the problems of poor carbon dioxide absorption capacity, high energy consumption in the desorption process and the like of the existing carbon capture solvent.

The present invention relates to the technical field of carbon dioxide capture. Disclosed are an absorption liquid for capturing carbon dioxide and the use thereof, and a method for capturing carbon dioxide. The absorption liquid comprises: an absorbent, an activator, an auxiliary agent, and / or a non-aqueous solvent, wherein the absorbent is selected from at least one of 3-amino-1-propanol, monoethanolamine and diethanolamine. Compared with a traditional phase change absorbent, the absorption liquid has the significant advantages of a low viscosity, a large carbon dioxide absorption capacity, a low regeneration temperature, etc., and has positive significances in reducing the energy consumption and cost during the flue gas carbon dioxide capture process.

The utility model relates to the technical field of carbon dioxide capture, in particular to a gas distributor and a carbon dioxide absorption tower. The gas distributor comprises an inner cylinder, a perforated plate and a guide plate group, a gas flow channel is formed between the outer peripheral surface of the inner cylinder and the inner peripheral surface of a tower body, and a gas inlet communicated with the gas flow channel is formed in the tower body; a plurality of through holes are formed in the perforated plate, and the perforated plate is connected to the top end of the inner cylinder; the two guide plate groups are symmetrically arranged on the two sides of the inner cylinder by taking the longitudinal axis section of the gas inlet as a symmetric plane; and each flow guide plate group comprises a plurality of flow guide plates which are distributed at intervals along the outer circumferential direction of the inner cylinder body. Smoke entering the gas flow channel can be divided into a plurality of gas flows through the two flow guide plate sets, the smoke is rapidly dispersed, meanwhile, gas and liquid can be separated in the downward flowing process of the gas flows, and therefore liquid drop entrainment is reduced; and a plurality of air flows are reflected upwards by the tower bottom, penetrate through the perforated plate and are further homogenized, so that uniformly distributed air flows are formed.

The invention discloses a multi-amino absorbent for carbon dioxide capture and a method for capturing carbon dioxide from a gas mixture, and belongs to the technical field of gas separation and carbon capture, utilization and storage. The multi-amino absorbent at least comprises a first component and a second component, wherein the first component is at least one N-hydroxyalkyl-N '-hydroxyalkyl-alkane diamine; the second component is at least one organic amine different from the first component, and the organic amine contains amino groups which are not primary amino groups and does not contain steric hindrance amino groups; and a solvent and optionally an additive. The method for capturing carbon dioxide from a gas mixture includes contacting the polyamino absorbent with a gas mixture containing carbon dioxide, thereby capturing carbon dioxide. The polyamino absorbent disclosed by the invention has the advantages of low carbon dioxide absorption reaction heat in normal-pressure flue gas, high circulating absorption amount, high absorption rate, high desorption rate, low volatility and the like.

The invention discloses a method for preparing a carbonated nano-gelling activator through CO2 mineralization and a product and application of the carbonated nano-gelling activator, and belongs to the technical field of inorganic materials.The method comprises the steps that 1, a calcium source is extracted, specifically, the solid-phase calcium source and an extracting agent are mixed, and filtering is conducted after extraction to obtain a soluble calcium salt solution; (2) CO2 absorption: capturing CO2 gas by using an alkaline absorption liquid to fully dissolve CO2 to form a soluble carbonate solution; (3) calcium complexation: mixing a soluble calcium salt solution with an organic acid additive to obtain a complexed calcium precursor; and (4) carbonation: adding a soluble carbonate solution into the complex calcium precursor, terminating the reaction and separating the solid phase in the reaction solution when the mixed system generates a precipitate and is colloidal, cleaning by using a blocking agent, and drying to obtain the carbonated nano gelatinization activator. The carbonated nano gelling activator is high in gelling activity and can be used for synthesizing building materials with excellent mechanical strength, and a relatively high resource utilization level is realized.

The invention belongs to the technical field of carbon dioxide capture, and particularly discloses a tubular parallel flow carbon dioxide absorption and desorption continuous operation system and method. The method is used for solving the problems of large equipment size, high operation cost and high energy consumption of a traditional countercurrent packed tower chemical absorption method. The operating system comprises a low-partial-pressure carbon dioxide inlet, a carbon dioxide ejector, an absorption reactor, a first gas-liquid separator, a first heat exchanger, a second heat exchanger, a pregnant solution pump, a desorption reactor, a heater, a pressure controller, a second gas-liquid separator, a third gas-liquid separator, an absorbent storage tank and a barren solution pump. Continuous operation is adopted in the whole process, efficient cyclic utilization of the carbon dioxide absorbent is achieved, the number and occupied area of carbon capture equipment are effectively reduced, the labor cost and operation risk are reduced, the carbon capture efficiency is improved, and the transformation and maintenance cost of existing equipment is reduced; therefore, efficient, low-energy-consumption and green parallel flow continuous operation of carbon dioxide absorption and desorption is realized.

The invention discloses a phase behavior controllable absorbent for carbon dioxide capture and a preparation method and application thereof, and belongs to the technical field of gas separation. The phase behavior controllable absorbent is in a homogeneous phase before absorbing CO2, liquid-liquid two phases are formed in the CO2 absorbing process, and CO2 is absorbed to be saturated and recovered to be in the homogeneous phase; the diethylenetriamine phase-splitting regulator comprises 20-35% of diethylenetriamine serving as a main agent, 15-35% of phase-splitting regulator and the balance of water, wherein the split-phase regulating agent is diethylaminoethanol and pentamethyldiethylenetriamine, and the mass ratio of the diethylaminoethanol to the pentamethyldiethylenetriamine is (1: 4)-(4: 1). The preparation method of the phase behavior controllable absorbent for carbon dioxide capture comprises the following steps: preparing the raw materials in proportion, and uniformly mixing to obtain the phase behavior controllable absorbent. The invention discloses application of the phase behavior controllable absorbent in treatment of carbon dioxide-containing gas and a method for capturing carbon dioxide by adopting the phase behavior controllable absorbent. According to the phase behavior controllable absorbent disclosed by the invention, the CO2 absorption rate is increased, the CO2 capture energy consumption is reduced, and the one-time investment of equipment is reduced.

The invention relates to a long-term stable carbon dioxide absorbent and a preparation method and application thereof, preparation raw materials of the carbon dioxide absorbent comprise a quaternary ammonium salt hydrogen bond acceptor, an amine compound, an alcohol hydrogen bond donor and a reinforcing agent, and the reinforcing agent comprises sorbitol, boric acid or nano silicon dioxide. The carbon dioxide absorbent disclosed by the invention not only has excellent absorption and desorption effects, but also is creatively added with the reinforcing agent. By adding the reinforcing agent, the long-term operation stability of the absorbent under an oxygen-containing condition can be remarkably improved on the premise that the original excellent CO2 absorption and desorption performance is not influenced basically, and oxidative degradation of amine components is effectively inhibited. The composition is simple to prepare and controllable in cost, and is suitable for efficiently and stably capturing CO2 from gas mixtures such as industrial flue gas.

The invention discloses an active and passive combined observation carbon dioxide column concentration inversion method, and relates to the technical field of meteorological detection.The method comprises the steps that an active laser radar observation data set is obtained through arrangement according to month information and longitude and latitude information, and differential optical thickness is obtained through calculation based on a radar equation according to priori active laser radar observation data; according to the line-by-line integration principle, a carbon dioxide absorption cross section lookup table is constructed, priori profile data and differential optical thickness are combined, a correction coefficient matrix of a priori profile and corrected priori profile data are obtained through calculation, and according to the optimization algorithm principle, the corrected priori profile data serve as constraint, and the carbon dioxide absorption cross section is obtained. And the concentration of the carbon dioxide column is calculated based on the passive observation data, so that the inversion method provided by the invention not only comprises active laser radar observation, but also comprises the passive observation data, the active observation and the passive observation are effectively combined, more accurate prior profile information is provided, and the inversion precision is improved.

The utility model discloses an atomization rotational flow crystallization device for CO2 resource recovery, which relates to the technical field of recovery of CO2 in combustion flue gas and comprises a spray gas inlet device, a spherical cyclone and a condensation crystallization device. According to the utility model, the atomization rotational flow crystallization device is adopted to realize CO2 resource recovery of flue gas, the flue gas is firstly in full contact with atomization absorption liquid sprayed by the multi-point spraying array assembly to form a flue gas absorption liquid mixture, the flue gas absorption liquid mixture is in a rotational flow state after entering the spherical hydrocyclone, and gas-liquid phase separation is carried out, so that the CO2 resource recovery is realized. The liquid phase is condensed under the condensation action of the condensation crystallization device to obtain a solid-phase product sodium bicarbonate and a liquid-phase absorption liquid, and the liquid-phase absorption liquid is subjected to temperature control adjustment and atomization again to provide an absorption liquid for the multi-point spray array assembly; and the method can also be used for large-scale CO2 resource recovery scenes such as thermal power plants and the like, the process and equipment are stable and reliable, the operation is flexible, and the CO2 absorption conversion rate is high.

Provided is a carbon dioxide capturing apparatus comprising: a reaction tower including a carbon dioxide adsorption unit or a carbon dioxide absorption unit which adsorbs or absorbs carbon dioxide from exhaust gas; desorption tower connected to the reaction tower and including an adsorbent heating unit for heating an adsorbent circulating inside or an absorbent heating unit for heating an absorbent circulating inside; an adsorbent or absorbent which circulates in the reaction tower and the desorption tower and alternately adsorbs and desorbs carbon dioxide or alternately absorbs and desorbs carbon dioxide; and a heat exchange unit which desorbs carbon dioxide from the adsorbent on which carbon dioxide is adsorbed or the absorbent in which carbon dioxide is absorbed, through heat exchange between the adsorbent on which carbon dioxide is adsorbed and the heated adsorbent, or between the absorbent in which carbon dioxide is absorbed and the heated absorbent, wherein the adsorbent on which carbon dioxide is adsorbed and the heated adsorbent, or the absorbent in which carbon dioxide is absorbed and the heated absorbent are transferred in a co-current flow manner.

The present invention relates to the technical field of chemical towers, specifically an efficient and energy-saving carbon dioxide absorption tower, which includes a tower body, a main structure, an adjustment structure, a support structure, a rotating packing structure, a limiting structure, and an opening and closing structure; the tower body is operated by multiple structures in coordination to achieve efficient carbon dioxide absorption. The main structure separates and captures carbon dioxide from carbon-containing gases; the adjustment structure controls the rotation of the liquid distributor, adjusts the spraying angle and centrifugal force, so that the absorption liquid is evenly distributed, improves the absorption efficiency, and reduces the wall flow phenomenon; the support structure is easy to install and has stable support, which is conducive to the installation of the rotating packing structure; the rotating packing structure is convenient for zoning packing and replacing packing, reducing the labor intensity during manual packing replacement. The limiting structure ensures the stability of the packing box, and the opening and closing structure facilitates opening the inspection port, which is convenient for maintenance, component replacement, and packing replacement, ensuring the stable operation and efficient maintenance of the equipment.

The embodiment of the invention provides a carbon dioxide trapping and coupling modularized electrolytic hydrogen production system which comprises an absorption device, and a carbon dioxide absorption liquid solution is arranged in the absorption device and used for absorbing carbon dioxide; the electrolytic hydrogen production device comprises a plurality of electrolytic units, each electrolytic unit comprises an anode chamber and a cathode chamber which are isolated from each other, an anode electrode is arranged in each anode chamber, a cathode electrode is arranged in each cathode chamber, the polarities of the two adjacent electrodes of the two adjacent electrolytic units are opposite, the anode chambers are communicated with the absorption liquid outlet of the absorption device, and the cathode chambers are communicated with the absorption liquid outlet of the absorption device. The cathode chamber is communicated with an absorption liquid inlet of the absorption device; the first gas-liquid separation device is communicated with an anode liquid outlet of the anode chamber, and the first gas-liquid separation device is communicated with a cathode liquid inlet of the cathode chamber; and the second gas-liquid separation device is communicated with a cathode liquid outlet of the cathode chamber, and the second gas-liquid separation device is communicated with an absorption liquid inlet of the absorption device.

The invention relates to the technical field of chemical towers, in particular to an efficient and energy-saving carbon dioxide absorption tower which comprises a tower body, a main body structure, an adjusting structure, a supporting structure, a rotary filler structure, a limiting structure and an opening and closing structure. The tower body is formed by synergic operation of various structures, efficient carbon dioxide absorption is achieved, and the main body structure separates and captures carbon dioxide from carbon-containing gas; the adjusting structure controls the liquid distributor to rotate and adjusts the spraying angle and centrifugal force, so that the absorption liquid is uniformly distributed, the absorption efficiency is improved, and the wall flow phenomenon is reduced; the supporting structure is convenient to mount and stable in supporting, and mounting of the rotary filler structure is facilitated; the rotary packing structure facilitates partitioned packing and packing replacement, the labor intensity during manual material replacement is reduced, the limiting structure ensures that the packing box is stable, the opening and closing structure facilitates opening of the access hole, overhauling, assembly replacement and packing and material replacement are facilitated, and stable operation and efficient maintenance of equipment are ensured.

A carbon-sequestering concrete composition and method of production are disclosed. The composition comprises geopolymer binder components, aggregates, and alginate beads formed from brown algae powder through ionic gelation. The alginate beads significantly increase CO2 absorption surface area compared to algae powder, creating a matrix across the concrete surface that enhances long-term sequestration and improves durability. The beads interact synergistically with other concrete components, including geopolymers, fly ash, and ground granulated blast furnace slag, to enhance pozzolanic reactions and create additional sites for carbon dioxide capture. The alginate beads also facilitate the dissolution of minerals like olivine, further enhancing carbon capture. The composition demonstrates superior carbon sequestration capabilities, enabling sustained CO2 absorption throughout its service life. The method includes forming alginate beads, incorporating them into the concrete mixture, and allowing for initial hardening and drying processes that promote carbon dioxide absorption directly from the air.

The embodiment of the invention discloses a low-corrosion metal system for capturing CO2 through an electrochemical mediation amine regeneration method and a preparation method of the low-corrosion metal system. The method comprises the steps that metal copper Cu serves as an electrode, and an organic amine MMEA aqueous solution doped with non-corrosion sodium salt serves as an absorbent; the absorbent saturated by CO2 absorption is used as anode liquor; and a solution obtained after a Cu-MMEA complex is fully formed in the anolyte serves as catholyte, and the Cu-MMEA metal system is prepared. According to the preparation method of the low-corrosion metal system for capturing CO2 through the electrochemical mediation amine regeneration method, the non-corrosion salt is introduced into the cathode electrolyte and the anode electrolyte, so that the problem that a chlorine-containing solution and a nitrate-containing solution corrode stainless steel in long-term use is solved, and the performance is not affected.

The invention relates to a CO2 absorbent with high cycle capacity and high cycle stability and application of the CO2 absorbent, and belongs to the technical field of atmospheric CO2 pollution treatment in the environmental protection industry. The CO2 absorbent is a polyamide-amine dendritic polymer (represented by PAMAM-2 (2 + G) NH2, G is the algebra, and 2 (2 + G) is the number of terminal amino groups), wherein primary amino is used as a terminal group, alkylene diamine is used as a core, and the algebra G is 1-5. The polyamidoamine dendritic polymer provided by the invention has the advantages of high-density terminal amino groups, high CO2 absorption capacity, large circulation capacity and high circulation absorption stability.

The utility model discloses a carbon dioxide absorber device with an artificial nose filter, which belongs to the technical field of medical instruments and comprises a shell, an air inlet is arranged at the top of one side of the shell, an air outlet is arranged on one side of the shell far away from the air inlet and opposite to the air inlet, and an artificial nose is mounted on the air outlet. A honeycomb-shaped division bar is arranged at the inner bottom of the shell, and a gap is reserved between the lower portion of the honeycomb-shaped division bar and the inner bottom of the shell. The artificial nose is arranged at the air outlet of the shell, so that the heat and the humidity of air exhaled by a patient can be kept, bacteria and viruses in the inhaled air are isolated, cross infection is effectively avoided, and the use safety and the functionality of the device are improved; the honeycomb-shaped division bars and the first sponge mat are arranged at the inner bottom of the shell, the inner space of the shell can be divided, the absorption area is formed at the top of the first sponge mat, the water vapor collection area is formed at the bottom of the first sponge mat, calcium lime can be prevented from being soaked, and the absorption effect is ensured.

The invention provides an innovative rapid screening process of a novel liquid-liquid phase change absorbent for CO2 capture. According to the method, system components are screened by dropwise adding a physical solvent and water, the composition and the load interval of the phase change solvent are determined, and the split-phase load critical value is accurately determined by adopting a back titration method. The screening process is simple and efficient in step, is suitable for various complex liquid-liquid phase change solvent systems, greatly improves the solvent screening efficiency, and is particularly suitable for efficient solvent screening for CO2 capture. The absorbent screened by the process shows excellent CO2 absorption performance at normal temperature and normal pressure, and has the advantages of easy control of phase change conditions, low regeneration energy consumption and the like. The absorbent is not only suitable for CO2 capture of industrial emission sources of coal-fired power plants, cement plants, steel plants and the like, but also suitable for CO2 emission reduction and resource utilization processes in various environmental protection scenes.

The invention discloses a bimetallic-based catalyst for promoting CO2 absorption-desorption cycle of an alcohol amine solution as well as a preparation method and application of the bimetallic-based catalyst, an MCM-41 molecular sieve with a high specific surface area and an ordered mesoporous structure is taken as a carrier, Zr (SO4) 2 and copper acetylacetonate are loaded as bimetallic active components, the catalyst has a proper acid site and good surface acidity, and the catalyst can be applied to CO2 absorption-desorption cycle of an alcohol amine solution. The decomposition of bicarbonate ions is accelerated, the fracture bond energy of C-N is reduced, the carbon dioxide desorption performance of MEA and a water-poor system is enhanced, and the energy consumption is reduced. Compared with the prior art, the molecular sieve catalyst is synthesized by adopting a one-step hydrothermal method, and the process is simple; the catalyst is not only suitable for a traditional MEA aqueous solution, but also effective in a novel water-poor amine liquid system, and provides an energy-saving solution for different carbon capture processes. After the catalyst is subjected to five times of absorption-desorption cycles, the catalytic activity of the catalyst can still be kept at 90% or above of an initial value, and good cycle stability is shown.

The utility model relates to a system for reducing carbon dioxide emission in a coking production process. The system comprises a coke oven heating system, a flue gas desulfurization and denitrification system, a CO2 absorption and analysis system, a methanol synthesis system, a wind power / photovoltaic power generation system, an energy storage system, a water electrolysis hydrogen production system, a hydrogen storage system and a methanol storage system. According to the device, the emission of coke oven flue gas CO2 to the atmosphere can be effectively reduced, the CO2 in the coke oven flue gas can be captured and converted into a green methanol fuel, and the CO2 generated by combustion is not discharged when the green methanol fuel is used as a heating fuel of a coke oven, so that the cyclic utilization and green development of the CO2 are realized.

The invention discloses a sludge composite curing agent and application thereof in sludge curing, carbon sequestration and emission reduction, and belongs to the technical field of sludge curing. The sludge composite curing agent comprises the following components in percentage by mass: 40-60% of slag, 20-40% of carbide slag and 10-20% of biochar. The curing agent can realize curing of sludge and improve mechanical properties (such as compressive strength and the like) of the cured sludge, and in addition, the prepared cured sludge has a relatively good absorption effect on CO2, can reduce emission of greenhouse gases, and has a good promotion effect on carbon sequestration and emission reduction.

The invention discloses a system and a method for capturing cement kiln flue gas carbon dioxide based on a high-temperature flue gas waste heat regeneration technology. The system comprises a carbon dioxide absorption system and a carbon dioxide desorption system, the carbon dioxide absorption system comprises a pretreatment tower, an induced draft fan, an absorption tower, a water washing tower and a rich liquid pump; the carbon dioxide desorption system comprises a rich and lean solution heat exchanger, a lean solution pump, a desorption tower, a regenerated gas cooler, a lean solution cooler and a high-temperature flue gas waste heat recovery reboiler. Compared with the prior art, the system and method for capturing the cement kiln flue gas carbon dioxide based on the high-temperature flue gas waste heat regeneration technology can effectively utilize the cement kiln high-temperature flue gas to replace external heat source water vapor to desorb CO2, can effectively reduce the CO2 capturing cost, realizes the cooling of the cement kiln high-temperature flue gas, and improves the recovery rate of CO2. Good application prospects are realized.

The invention provides carbon sequestration concrete and a preparation method thereof, and relates to the technical field of building materials. The carbon sequestration concrete provided by the invention is prepared from the following preparation raw materials in parts by mass: 280 to 320 parts of cement, 40 to 50 parts of mineral powder, 50 to 60 parts of fly ash, 650 to 700 parts of machine-made sand, 200 to 240 parts of natural sand, 750 to 850 parts of large stone, 150 to 170 parts of small stone, 3.8 to 4.5 parts of a water reducing agent, 0.15 to 0.85 part of a retarder, 4 to 20 parts of sodium carboxylate and 180 to 200 parts of water. Sodium carboxylate is introduced as a carbon sequestration aid, carboxylate radical groups of sodium carboxylate can efficiently complex calcium ions released by cement hydration to form a soluble calcium carboxylate complex, so that the chemical reaction that carbon dioxide is mineralized into calcium carbonate is accelerated, the carbon dioxide absorption capacity of concrete is remarkably improved, and the carbon sequestration efficiency is improved. The carbon sequestration concrete provided by the invention has high carbon sequestration performance and excellent mechanical properties.

The invention discloses a low-viscosity ternary eutectic solvent as well as a preparation method and application thereof, and belongs to the technical field of CO2 absorbents. The low-viscosity ternary eutectic solvent is composed of polyamine hydrochloride, steric hindrance amine and organic alcohol, the polyamine hydrochloride has multiple active amino groups and is used for guaranteeing the high CO2 absorption rate and absorption load of the ternary eutectic solvent, the steric hindrance amine can inhibit formation of a hydrogen bond network due to the unique steric hindrance structure, and the high CO2 absorption rate and absorption load of the ternary eutectic solvent are improved. The organic alcohol can be used as a viscosity regulating agent, active hydroxyl of the organic alcohol can promote proton transfer in a CO2 desorption reaction, and the CO2 desorption efficiency is enhanced. The ternary eutectic solvent provided by the invention can still maintain a low-viscosity homogeneous liquid state after absorbing CO2, can effectively reduce the reduction of mass transfer efficiency caused by high viscosity, influence on contact with a target compound, heat transfer efficiency and the like, and solves the ubiquitous problems of overhigh viscosity and insufficient regeneration efficiency of the existing DESs system.

The invention relates to the field of medical instrument consumables, and discloses an external multifunctional anesthetic gas carbon dioxide absorber which is characterized in that an upper box body is provided with a first carbon dioxide absorption chamber, a second carbon dioxide absorption chamber, an anesthetic gas absorption chamber, a damp-heat exchange chamber, an electronic tag and a gas sampling hole; the lower box body is provided with a gas distribution chamber and a ventilation switch mechanism, the gas inlet channel is communicated with the first carbon dioxide absorption chamber, and the second carbon dioxide absorption chamber and the anesthetic gas absorption chamber are communicated with the gas outlet channel through the damp-heat exchange chamber. Carbon dioxide is absorbed during operation, and anesthetic gas is adsorbed during postoperative resuscitation; sufficient and efficient absorption of carbon dioxide can be ensured, and the color change identification degree is improved; the gas distribution chamber can effectively reduce gas resistance and conduct heat dissipation and cooling, and the damp-heat exchange chamber is arranged, so that the temperature and humidity of circulating gas are effectively regulated and controlled, and the potential dust risk of the gas is blocked.