512 results about "High carbon dioxide" patented technology

The invention provides an intelligent pressure management system, method and terminal for geological sequestration of carbon dioxide, and the system comprises the steps: collecting the pressure data of the interior and peripheral key positions of each geological reservoir in real time through a pressure monitoring subsystem, and then carrying out the data preprocessing and feature extraction through a data processing and analysis subsystem; and predicting the reservoir pressure change trend in a specific time period in the future. If the predicted reservoir pressure change trend pressure is too high, high-risk related information is transmitted to the intelligent regulation and control subsystem, and the intelligent regulation and control subsystem regulates and controls the reservoir pressure by regulating the flow of a carbon dioxide injection well and a production well or starting a pressure release device according to a preset strategy and dynamically regulates a regulation and control mode according to pressure data. Meanwhile, the communication and monitoring subsystem transmits system operation data to a remote monitoring terminal in real time, so that real-time monitoring is facilitated. Real-time, accurate and automatic regulation and control of the pressure of the geological reservoir are achieved, the stability and safety of the geological reservoir in the carbon dioxide injection process are guaranteed, the geological storage effect of the carbon dioxide is improved, and various negative effects caused by too high pressure are avoided.

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.

The invention discloses a carbon dioxide oil displacement burying multi-objective optimization method based on a self-adaptive agent model, and relates to the technical field of oil reservoir injection and production optimization. The method comprises the following steps: firstly, constructing a carbon dioxide flooding embedding injection-production optimization model, then acquiring a plurality of initial samples by adopting Latin hypercube sampling to construct a database, preferably selecting each target agent model based on the database, and then generating a Pareto leading edge by utilizing a dominating class search strategy, a decomposing class search strategy and an index class search strategy; and in the optimization stage, a preferred potential solution is searched according to a hypervolume improvement maximum strategy, numerical simulation is carried out, the database is updated until a preset number of times is reached, each iteration optimization scheme, an oil reservoir net present value and a carbon dioxide burying amount are output, and multi-target optimization of carbon dioxide flooding burying is completed. According to the method, the carbon dioxide flooding multi-objective optimization efficiency is improved, meanwhile, the search direction is dynamically adjusted through the hyper-volume evaluation index, the Pareto frontier is accelerated, and accurate prediction of the carbon dioxide flooding development scheme is achieved.

The invention discloses a pseudo-ginseng seed storage method, relates to the technical field of seed treatment, and aims to solve the problems that pseudo-ginseng seeds are difficult to store, easy to lose vigor and severely mildew.The pseudo-ginseng seed storage method adopts a specially-made bionic microenvironment packaging unit to wrap the seeds, the inner layer of the specially-made bionic microenvironment packaging unit contains a moisture slow-release agent, and a bacteriostatic agent and active substances needed by germination can be intelligently released in a staged mode; the outer layer of the seed packaging box is a selective breathable film which integrates humidity and microbial contamination state indication functions and stress buffer characteristics, then the packaged seed is placed in an intelligent regulation and control storage cabin, and the temperature and humidity are accurately regulated and controlled by the storage cabin; gas components (such as low oxygen, high carbon dioxide or ozone) regulation and control, efficient air filtration and an intelligent monitoring and remote management system can be selected, the service life of the seeds can be remarkably prolonged, high germination rate and activity are kept, mildew is effectively inhibited, physiological after-ripening and germination are optimized, and intelligentization, standardization and refinement of seed storage management are achieved.

The invention discloses a Pt-ZnO / In2O3 catalyst for preparing methanol through hydrogenation of carbon dioxide and a preparation method of the Pt-ZnO / In2O3 catalyst, and relates to the technical field of catalyst preparation, and the preparation method comprises the following steps: preparing a ZnO / In2O3 catalyst by using a coprecipitation method; and loading platinum on the surface of the ZnO / In2O3 catalyst by an impregnation method to obtain the Pt-ZnO / In2O3 catalyst. The Pt-ZnO / In2O3 catalyst does not generate a sintering phenomenon in the use process, has long-term stability, realizes modification of the In2O3-based catalyst by adding zinc oxide, and can significantly improve the conversion rate of carbon dioxide and product selectivity.

The invention provides a carbon dioxide trapping absorbent and a trapping absorption method. The carbon dioxide trapping absorbent has high main absorbent concentration, the formula of the main absorbent and the viscosity of the carbon dioxide trapping absorbent are limited to be smaller than or equal to 20 cp, the mass transfer and trapping absorption capacity of carbon dioxide is improved, meanwhile, the trapping absorption capacity of carbon dioxide is further improved by limiting the formula of the accelerant, and the carbon dioxide trapping absorption capacity is improved. And more importantly, the regeneration effect of the absorbent can be improved, and the regeneration energy consumption can be obviously reduced. In addition, the absorbent is friendly to equipment, a protective film is formed on the surface of the equipment, and equipment corrosion is avoided.

A preparation method of a Ni-based high-entropy oxide catalyst and its application in the preparation of syngas by carbon dioxide (CO2) reforming of methane (CH4) is provided, and it relates to the technical field of preparation of environmental catalytic materials. The catalyst is prepared by high-energy ball milling method. Using reversible Ni particles with high content as the active site of CH4 gas, other metals introduced by high-entropy strategy greatly reduce the carbon generated from CH4 cracking while activate CO2. The prepared catalyst not only effectively overcomes the problem of poor stability of the Ni-based catalyst in CO2 reforming of CH4, but also promotes activation of CO2 and improves the efficiency of CO2 reforming of CH4 reaction. The provided preparation method of the high-entropy oxide catalyst is simple, stable, economical and reliable, and has a good development prospect in the industrial application field of CO2 reforming of CH4 technology.

The invention discloses a proton-type ionic liquid super-crosslinked polymer and a preparation method and application thereof in carbon dioxide adsorption, proton-type ionic liquid is used as a connection building block, and the two types of connection building blocks are subjected to catalytic polymerization by adjusting the ratio of the proton-type ionic liquid to a cross-linking agent connection building block to obtain the proton-type ionic liquid super-crosslinked polymer. The proton type ionic liquid super-crosslinked polymer obtained by the invention has a super-crosslinked anion network structure. The carbon dioxide adsorption and separation capacity is obviously improved by utilizing a high specific surface area, a high total pore volume and exposed multi-nitrogen sites, so that efficient, high-capacity and reversible adsorption of carbon dioxide gas is realized.

The invention relates to a method for preparing carbon monoxide by reverse water gas shift, which comprises the following steps: under the catalytic action of a supported catalyst, carrying out reverse water gas shift reaction, carrying out pressure swing adsorption treatment on mixed gas generated in the reaction process, and desorbing to obtain carbon monoxide. By coupling the reverse water gas shift reaction and the pressure swing adsorption process and exerting the synergistic effect of the reverse water gas shift reaction and the pressure swing adsorption process, efficient and rapid separation of carbon monoxide is realized, the reverse water gas shift reaction is promoted to be carried out in the forward direction, the reaction requirement of reverse water gas shift is reduced, the reverse water gas shift reaction is carried out under relatively mild conditions, and the reaction efficiency is improved. The long-period efficient conversion of carbon dioxide is realized, and the conversion rate of carbon dioxide and the selectivity of carbon monoxide are further improved.

The invention discloses a multi-site intelligent response type CO2 gas channeling prevention gel and a preparation method, and belongs to the field of chemical oil displacement, and the preparation method comprises the following steps: taking a carbon dioxide response type monomer, acrylamide and sodium acrylate as monomers, and adopting water-soluble free radical polymerization to prepare a CO2 response type copolymer; the CO2 response type copolymer, a cross-linking agent, a stabilizer, a retarder and formation water are prepared into a polymer cross-linking agent mixed solution, a cross-linking reaction is carried out under the conditions of formation temperature and mineralization degree, and the multi-site intelligent response type CO2 gas channeling prevention gel is obtained. The gel effectively solves the problems that a traditional anti-channeling agent is poor in injectivity in a low-permeability and ultra-low-permeability oil reservoir and cannot achieve deep channeling sealing, CO2 gas channeling fractured channels can be effectively blocked, the carbon dioxide oil displacement effect is remarkably improved, and key technical support is provided for large-scale application of carbon dioxide displacement.

The invention discloses a mineral cemented filling mortar material for mineralizing and sealing CO2 and a preparation method thereof, and relates to the technical field of low-carbon environment-friendly mortar materials, the raw materials comprise carbonic anhydrase-producing microorganisms, aggregate, a calcium source solution and nano zinc oxide; wherein the calcium source solution is an aqueous solution of calcium chloride, calcium nitrate or calcium acetate, the calcium source solution comprises a premixed calcium source solution and a gradient calcium source solution, the concentration of Ca < 2 + > in the premixed calcium source solution is 0.5 mol / L, the concentration of the gradient calcium source solution is 2 mol / L, and the premixed calcium source solution is used after being premixed with the aggregate; the particle size of the nano zinc oxide is 50-100 nm; according to the present invention, the storage amount of carbon dioxide can be increased so as to achieve the requirements of low carbon and carbon reduction, the reaction rate of CO2 hydration to generate HCO3 <-> / CO3 < 2-> can be significantly increased, the generation of HCO3 <-> / CO3 < 2-> can be accelerated, the CO2 hydration reaction and the subsequent gelling effect can be further accelerated, and the environmental protection and low carbon performance can be improved.

The invention relates to a catalyst for preparing methanol through hydrogenation of carbon dioxide. The catalyst comprises a hydroxide compound with a core-shell structure, the hydroxide compound with the core-shell structure is formed by taking a lamellar hydroxide as a core and coating the lamellar hydroxide with a granular hydroxide to form a shell; wherein the lamellar hydroxide and the granular hydroxide respectively and independently comprise one or more of hydroxides of copper, manganese, nickel, indium, zinc, aluminum, cerium, zirconium, cobalt, gallium and silicon, and the lamellar hydroxide and the granular hydroxide in the hydroxide compound with the same core-shell structure are different. Lamellar hydroxides in the hydroxide compounds with different core-shell structures are different. The invention further provides a preparation method of the catalyst, the preparation method is simple in process and low in cost, and the prepared catalyst is high in active element content, high in catalytic activity, high in carbon dioxide conversion rate and high in methanol yield.

The invention discloses a micro-scale mixing effect induced carbonate precipitation rate coefficient calculation method, which comprises the following steps: S1, carrying out a micro-scale mixing effect induced carbonate precipitation visualization experiment to obtain a carbonate precipitation image data set; s2, establishing a carbonate precipitation identification model, wherein the carbonate precipitation identification model sequentially comprises three steps of image calibration, gray scale iteration adjustment and precipitation identification; s3, establishing a carbonate precipitation rate calculation model, wherein the carbonate precipitation rate calculation model sequentially comprises three steps of pixel point statistics, precipitation amount calculation and precipitation rate calculation; and S4, establishing a carbonate precipitation rate coefficient calculation model, wherein the model comprises precipitation rate analysis and precipitation rate coefficient calculation. The calculation of the rate coefficient of the carbonate precipitation induced by the mixing effect under the microscale is realized, and support is provided for understanding the carbonate precipitation mechanism in the karst area and improving the geological storage efficiency of carbon dioxide and the efficiency of calcium carbonate precipitation induced by microorganisms.

The utility model relates to the technical field of a carbon dioxide gasification pry, and discloses a finned tube of a gasifier on an air temperature type carbon dioxide gasification pry, which comprises a central tube and heat exchange fins. The heat exchange fins are fixedly arranged on the outer edge of the central pipe in a circumferential array mode, extend outwards and are connected with the central pipe through laser welding or electron beam welding, so that the gasification efficiency is improved. An inner side channel of the central pipe is divided into an inner channel and an outer channel by an inner pipe, an inner shaftless spiral spoiler is arranged in the inner channel, and an outer shaftless spiral spoiler is arranged in the outer channel, so that the turbulence degree and the heat exchange effect are improved. Grooves are evenly distributed in the two faces of each heat exchange fin to increase the heat exchange area and the heat conduction rate. The two ends of the inner pipe are connected with the central pipe through connecting rods which are annularly arranged at equal intervals, firm connection is ensured, and leakage is reduced. And the external thread interface ensures the sealing performance of the end cover. The design of the finned tube can improve the gasification efficiency of carbon dioxide, reduce energy consumption and improve the reliability and stability of equipment.

An experimental device for the impact of carbon dioxide geological storage on fault stability, comprising a fault simulation specimen and a true triaxial stress loading system, a liquid carbon dioxide injection system, a temperature loading system, an acoustic emission monitoring system, a gas concentration monitoring system, a stress and deformation monitoring system, a temperature monitoring system, and a fluid pressure monitoring system, which are respectively connected to the fault simulation specimen. The experimental method for evaluating the fault instability induced by carbon dioxide geological storage includes the steps of preparing the fault simulation specimen, building the experimental equipment, loading the experimental conditions and collecting data, calculating the stress, and analyzing the mechanism of fault instability induced by carbon dioxide storage. The present invention relates to the technical field of fault stability evaluation and carbon storage experiments, and can provide data support for improving the effect of carbon dioxide geological storage through simulation experiments.

The invention relates to a method for improving the huff-puff effect of carbon dioxide, which comprises the following steps of: when liquid carbon dioxide is injected, monitoring horizon data by using an oil well profile logging instrument, judging whether the liquid carbon dioxide is a target horizon or not by sucking the horizon data, and smoothly injecting the liquid carbon dioxide into the target horizon by adopting a process adjustment or layered injection method, so as to improve the huff-puff effect of the liquid carbon dioxide. The carbon dioxide utilization rate, the measure effect and the effective rate are improved, and the remaining oil potential tapping effect and the oil well recovery rate are improved; when the oil increasing amount of well opening oil production does not reach the standard, whether the output layer is the target layer or not continues to be monitored, if the output layer is not the target layer, the measure target layer can be replaced in time, the layered pipe column structure can be adjusted when liquid carbon dioxide is injected, the purpose that the output layer is the target layer is achieved, and the measure effective rate and effect are improved.

The invention relates to preparation and application of a metal oxide-molecular sieve composite catalyst, and belongs to the technical field of industrial catalysis. The catalytic reaction takes carbon dioxide and hydrogen as reaction raw materials, and the catalyst is formed by compounding a metal oxide and a molecular sieve. Wherein the metal oxide is a solid solution metal oxide or a spinel metal oxide composed of three or two metal elements of M1, M2 and M3, M1 is one of Zn, Ga and In, M2 is one of Ce, Sm, La and Fe, and M3 is one of Zr, Ga, Cr, Al and Ti; the framework of the molecular sieve is a silicon-aluminum-oxygen or silicon-phosphorus-aluminum-oxygen tetrahedron; the metal oxide is prepared by adopting a gas diffusion method. The metal oxide disclosed by the invention is prepared by adopting a gas diffusion method, and has a very high specific surface area (80-300 m < 2 > g <-1 >). The composite catalyst shows excellent performance in a reaction for preparing low-carbon olefins (ethylene, propylene and butylene) through carbon dioxide hydrogenation, the carbon dioxide conversion rate can reach 35% or above, the carbon monoxide selectivity is smaller than 40%, the selectivity of the low-carbon olefins in hydrocarbons can reach 82.1%, the yield of the low-carbon olefins reaches 20.3%, and the composite catalyst has high catalytic stability. Compared with a traditional catalyst, carbon dioxide and hydrogen can be efficiently adsorbed and activated, so that the conversion rate of carbon dioxide is increased, the preparation method is simple, the catalytic performance is excellent, and the catalyst has good industrial application prospects.

The invention discloses a high-pressure amine absorption method carbon capture system and method coupled with liquefied air energy storage, and relates to the technical field of energy storage and carbon capture, the system comprises: an air compression unit used for compressing mixed gas of flue gas and air to generate high-pressure mixed gas, and detecting flow parameters of the mixed gas to generate high-pressure gas; the flue gas inlet amount and the high-pressure mixed gas flow are intelligently regulated and controlled; the heat conveying unit is used for conveying part of the high-pressure mixed gas and heat-conducting oil which are respectively used for carbon dioxide desorption and expansion power generation; and the absorption unit is used for introducing the high-pressure mixed gas from the top of the absorption tower, and absorbing carbon dioxide in the mixed gas by using an ethanolamine solution in the absorption tower to generate a rich solution. According to the invention, the air compression unit in the liquefied air energy storage system is utilized to pre-pressurize the flue gas to be subjected to carbon capture, increase the partial pressure of carbon dioxide, increase the solubility of carbon dioxide, increase the reaction rate of ethanol amine for absorbing carbon dioxide, increase the capture rate and reduce the dosage of ethanol amine solution.

The conveying and injecting system comprises a main pipeline, a cooling device and a supercharging device, the main pipeline is used for receiving supercritical carbon dioxide from a carbon dioxide capturing device, and the other end of the main pipeline is connected with an inlet of the cooling device; the cooling device is used for cooling the supercritical carbon dioxide to a preset temperature, so that the supercritical carbon dioxide is converted into dense-phase carbon dioxide, an outlet of the cooling device is connected with an inlet of the pressurizing device, an outlet of the pressurizing device is used for being connected with an injection well, and the pressurizing device is used for pressurizing the dense-phase carbon dioxide to a preset pressure. According to the conveying and injecting system, carbon dioxide is conveyed to the vicinity of a sealing place in a supercritical phase state in a long distance in the main pipeline and then conveyed to the injecting well after being cooled and pressurized, and the pressure of supercritical carbon dioxide is smaller than that of dense-phase carbon dioxide, so that the risk that the main pipeline is broken can be reduced; and the stability and safety of carbon dioxide conveying are improved.

The application discloses a kind of composite gel-physical foaming synergistic carbon dioxide foam concrete preparation process, carbon dioxide foam concrete, by mass parts, consisting of following components: sulphate cement 15-45 parts, hemihydrate gypsum 10-50 parts, Portland cement 5-15 parts, mineral powder 0-30 parts, gypsum retarder 0-0.3 parts, retarder 0.2-0.4 parts, water reducing agent 0.2-0.4 parts, calcium stearate 0.2-0.6 parts, hydroxypropyl methylcellulose ether (HPMC) 0.1-0.3 parts, water-cement ratio 0.2-0.45, prefabricated foam 5-15 parts.Sulphate cement, Portland cement and hemihydrate gypsum are mixed to prepare carbon dioxide foam concrete when specific mass ratio, can play the hydration synergistic effect between three, and then can greatly improve the mechanical properties of carbon dioxide foam concrete.

The invention provides a spinning-induced in-situ synthesized strong-carbon-absorption compact MOF nano-fiber membrane as well as a preparation method and application thereof. The method comprises the following steps: S1, co-dissolving polylactic acid, a zinc source and a cobalt source in a solvent A to prepare a bimetallic spinning precursor solution; s2, preparing a metal salt loaded nano-fiber membrane from the precursor solution obtained in the step S1 through a spinning process; s3, performing in-situ synthesis on the nano-fiber membrane obtained in the step S2 in a ligand solution composed of an organic ligand and a solvent B to prepare a compact MOF nano-fiber membrane; and S4, carrying out amination modification on the dense MOF nano-fiber membrane obtained in the step S3 in a mixed solution composed of a silane reagent and a solvent C to prepare the strong-carbon-absorption dense MOF nano-fiber membrane. The nano-fiber membrane prepared by the invention not only has the remarkable characteristics of bimetallic and Lewis alkaline adsorption sites, compact MOF, core-shell morphology, hierarchical pore structure and the like, has high carbon dioxide adsorption capacity and excellent separation selectivity, and is an efficient industrial terminal waste gas carbon capture and separation membrane material.

The invention discloses a resin well cementation method for a carbon dioxide injection well, which comprises the following steps of: calculating the annulus volume between a small-diameter casing string and an original well casing according to the specification parameters of the casing; a well killing hydraulic well is used, and after well killing is completed, the small-diameter casing string is lowered to the preset depth, and then a well mouth is installed; the method comprises the following steps: injecting a first solution into an annulus between a small-diameter casing string and an original well casing until well killing fluid in the annulus and the small-diameter casing is completely replaced by the first solution; after well killing fluid replacement is completed, a second solution with the same volume as the annulus volume is injected into the small-diameter casing string, the density of the second solution and the density of the first solution are close and both smaller than the density of the well killing fluid, the second solution and the first solution are different in color, and a high-strength carbon dioxide corrosion resistant resin slug is injected into the annulus pump; the technical problem of resin well cementation in the overflow state of the carbon dioxide injection well is solved.

The invention relates to the technical field of environmental protection, and discloses a biomass boiler oxygen-enriched combustion and biomass fly ash potassium extraction method which comprises the following steps: step 1, high-carbon-dioxide-concentration flue gas generated after biomass is subjected to oxygen-enriched combustion in a boiler is cooled, fly ash is separated, the flue gas enters a flue gas heat exchanger, and low-temperature flue gas and hot air are obtained after heat exchange with cold air; 2, fly ash obtained through separation and water are mixed and stirred, a water-ash mixture is obtained, CO2 is introduced into the water-ash mixture, and the ash mixture and low-temperature flue gas are subjected to a contact reaction; step 3, performing solid-liquid separation on the water-ash mixture after the reaction to obtain a potassium-rich solution A and a filter residue A, dividing the solution A into a solution B and a solution C, returning the solution B to the contact reaction tank for circulation, and enabling the solution C to enter a concentration device; 4, heating and concentrating the solution C through hot air to obtain a solution D; and 5, carrying out solid-liquid separation on the solution D to obtain potassium salt and mother liquor F. The method is simple in process, low in extraction cost and high in product purity.

The invention provides a preparation method of a PQDs-doped NaY molecular sieve for efficiently adsorbing carbon dioxide, which comprises the following steps: S1, mixing, stirring and dissolving aluminum chloride and sodium silicate in deionized water to obtain a precursor solution, and performing ultrasonic treatment on the dissolved precursor solution; s2, adding perovskite quantum dots (PQDs) into the precursor solution, stirring, and performing ultrasonic treatment after stirring is finished; s3, putting the mixed solution into a reaction kettle for hydrothermal reaction; and S4, centrifuging, washing, drying and grinding the solution after the hydrothermal reaction is completed to obtain the PQDs-doped NaY molecular sieve. The method has the effect of improving the adsorption capacity of the molecular sieve raw powder on the weakly acidic carbon dioxide.

The invention discloses an MOFs confinement platinum-molybdenum-based polyacid cluster catalyst and a precise preparation method and application thereof. The catalyst comprises zirconium-based MOFs, a Pt-containing molybdenum-based polyacid cluster or a Pt-free molybdenum-based polyacid cluster is dispersed in a pore channel of the zirconium-based MOFs, and Pt is deposited on the Pt-free molybdenum-based polyacid cluster. The catalyst has the characteristics of high atom utilization rate, mild reaction conditions, high carbon dioxide conversion rate, excellent stability and high methanol selectivity, shows better performance than commercial CuZnAl2O3 under the same conditions, and has wide industrial application prospects.

The utility model belongs to the technical field of carbon dioxide purification, and particularly relates to a rectifying tower for purifying carbon dioxide, which comprises a rectifying tower and a liquid storage tank, the liquid storage tank is placed on the left side of the rectifying tower, and a purifying device is arranged in the rectifying tower. According to the rectifying tower for purifying the carbon dioxide, liquid is input into the rectifying tower through a liquid inlet pipe, and when the liquid flows into a connecting pipe, impact force generated by flowing-out of the liquid drives the connecting pipe to rotate in a rotating bearing, so that a cross-shaped pipe and an annular pipe at the bottom of the connecting pipe are driven to rotate, and a shower head is driven to rotate; the liquid sprayed by the shower head is more uniform, impurities such as sulfur in gas are adsorbed and purified through the activated carbon plate, the carbon dioxide purification efficiency is improved, and the adsorption effect of the activated carbon plate has a saturation value, so that after purification is completed, the electric heating rod is started to heat the activated carbon plate for high-temperature desulfurization, and the purification efficiency is improved. The service life of the activated carbon plate is prolonged.

The invention belongs to the technical field of concrete, and particularly relates to carbon dioxide foam concrete as well as a preparation method and application thereof. Comprising the following steps: obtaining a gel raw material comprising cement, a nano filler and a mineral admixture, and preparing the gel raw material into cement paste; the preparation method comprises the following steps: preparing a foaming solution from a hydrogel thickener, a water repellent agent, a foaming agent and water, and introducing gas containing carbon dioxide to prepare carbon dioxide foam; carbon dioxide foam and cement paste are mixed to prepare mixed paste, and the mixed paste is formed to obtain a formed concrete blank; and performing internal carbonization curing and external carbonization curing on the concrete green body, and performing natural curing to obtain the carbon dioxide foam concrete. Through internal and external carbonization maintenance, a large amount of carbon sequestration is realized, micropores are filled by virtue of a product generated by carbonization, the aperture is refined, the collapse of a foam structure is reduced, the foam concrete is enhanced, the compressive strength and durability of the carbon dioxide foam concrete are improved, and the durability of the carbon dioxide foam concrete can be enhanced.

The invention relates to the technical field of crude oil extraction, in particular to a composition for improving the solubility of carbon dioxide in thickened oil and a preparation method and application thereof. The composition comprises a silicon-containing amine compound as shown in a formula (I) and a polyether compound as shown in a formula (II), in the # imgabs0 # formula (I), R1 and R2 are respectively and independently selected from alkyl of C1 to C20 and alkyl siloxy of C1 to C20; r3 is selected from hydrogen, alkyl with 1 to 20 carbon atoms and alkyl siloxy with 1 to 20 carbon atoms; R4 is alkylene with 3 to 10 carbon atoms; r5 and R6 are respectively and independently selected from hydrogen, C1-C24 alkyl or O = CR0, and R0 is selected from hydrogen and C1-C31 alkyl; in the formula (II), R7 is selected from alkyl of C1 to C20 and alkyl siloxy of C1 to C20; r8, R8'and R8 ''are respectively and independently selected from hydrogen or C1-C10 alkyl, a, b and c are the number of polyether fragments, a is equal to 1-50, b is equal to 1-50, c is equal to 1-50, R9 is selected from hydrogen and C1-C24 alkyl or O is equal to CR0', and R0 'is selected from hydrogen and C1-C31 alkyl. The composition can improve the efficiency of carbon dioxide cold recovery of heavy oil.

The invention provides a preparation method of solid waste ceramsite for sequestration of carbon dioxide, and relates to the technical field of carbon dioxide absorption and sequestration. The preparation method of the solid waste ceramsite for sequestration of carbon dioxide comprises the following steps: S1, raw material preparation; S2, granulation; S3, firing; S4, surface modification; the preparation method comprises the following steps: chemically modifying ceramsite by adopting amino silane, reacting at 60 DEG C for 4 hours, cleaning with deionized water, and drying at 80 DEG C; performance tests show that the modified solid waste ceramsite is beneficial to adsorption of carbon dioxide, and after the solid waste ceramsite is physically mixed with a certain proportion of zeolite, when the mass ratio of the ceramsite to the zeolite is 3: 1, the adsorption effect of the carbon dioxide can be further improved; when the addition amount is 3% of the mass of the raw materials, the carbon dioxide sealing performance of the ceramsite is remarkably improved.

The invention discloses a carbon dioxide absorbent and an absorption and regeneration method thereof. The absorbent comprises the following components in parts by weight: 15-40 parts of tertiary amine, 15-70 parts of polyamine, 1-20 parts of sterically hindered amine, 1-20 parts of an activating agent and 1-5 parts of amino-containing organic acid. The carbon dioxide absorbent provided by the invention has the characteristics of low desorption energy consumption, rapid separation and rapid regeneration, and the regeneration process is simple and easy to popularize. The efficient gas-liquid mass transfer equipment is used for achieving the heat and mass coordinated transfer process in the gas-liquid reaction and separation process, the mass transfer coefficient of carbon dioxide molecules on a solvent / water vapor interface is increased, the carbon dioxide separation efficiency is indirectly improved, and the characteristic that the liquid film carbon dioxide molecule concentration is high at the regeneration temperature of a low-energy-consumption solvent is coupled. The quantity of solvent entrained by the carbon dioxide generated by the invention is less, and the loss of the solvent in the cooling separation process is effectively reduced.