670 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 biogas in-situ purification device comprises an acid production reactor and a methane production reactor, a discharge port is formed in the bottom of the acid production reactor, the methane production reactor is provided with a feed port connected with the discharge port, a first gas outlet is formed in the top of the methane production reactor, and a second gas outlet is formed in the bottom of the methane production reactor. A gas inlet for directly introducing hydrogen or synthesis gas is formed in the bottom of the methanogenesis reactor, and a conductive material inlet is formed in the acid production reactor and / or the methanogenesis reactor. The conductive material inlet is formed in the acidogenic reactor and / or the methanogenic reactor, and the conductive material is introduced into the system, so that on one hand, the conductive material can promote an interspecific direct electron transfer mode among microorganisms, the tolerance of the acidogenic microorganisms to hydrogen is enhanced, and the overall operation stability of the system is enhanced; and on the other hand, the conductive material can promote the formation of granular sludge in the methane production reactor and enhance the symbiotic metabolism and action among microorganisms, so that the conversion rate of carbon dioxide and the purity of methane in the final biogas are improved.

The invention discloses a carbon dioxide adsorbent and a preparation method and application thereof.The preparation method comprises the following steps that a biological shell material is cleaned and then dried, the pretreated biological shell material is ground, and coarse shell powder is obtained; sequentially calcining and grinding the coarse shell powder in a protective atmosphere to obtain shell micro powder; mixing the shell micro powder with a magnesium oxide solid phase, calcining in a protective atmosphere, and grinding to obtain the carbon dioxide adsorbent. According to the invention, a solid-phase mixing method is adopted, and the marine biological waste with specific content and magnesium oxide are mixed, so that the mutual cooperation and mutual synergism among the raw material components can be fully exerted, the element composition and microstructure of the adsorbent material can be effectively regulated and controlled, and by virtue of the preparation method which is easy to operate and low in cost, the adsorbent material can be prepared. The obtained novel carbon dioxide adsorbent can improve the CO2 adsorption capacity and cycle stability of MgO, and can stably maintain high carbon dioxide adsorption rate and adsorption capacity for a long time.

The invention discloses a method and device for predicting the geological storage amount of carbon dioxide and a medium, and relates to the technical field of carbon dioxide capture, utilization and burying. The method comprises the steps that whether a to-be-predicted oil and gas reservoir and a control oil and gas reservoir are in the same block or not is judged; if yes, inputting the geological data, the production dynamic data and the injection parameter combination scheme of the to-be-predicted oil and gas reservoir into the optimal control oil and gas reservoir carbon dioxide geological sequestration quantity prediction model to determine the whole-area accumulated carbon dioxide geological sequestration quantity of the to-be-predicted oil and gas reservoir; if not, geological data, production data and an injection parameter value range of the to-be-predicted oil and gas reservoir are obtained, migration training is conducted on the optimal control oil and gas reservoir carbon dioxide geological sequestration quantity prediction model, and a to-be-predicted oil and gas reservoir carbon dioxide geological sequestration quantity prediction model is obtained; and determining the whole-area accumulated carbon dioxide geological sequestration amount of the to-be-predicted oil and gas reservoir. According to the invention, the precision and efficiency of carbon dioxide geological sequestration quantity prediction are improved.

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 relates to the technical field of reverse water-gas shift, in particular to a reverse water-gas shift catalyst, a preparation method thereof and a reverse water-gas shift method.The method comprises the steps that 1, precious metal is loaded on a carrier through an impregnation method, first calcination is conducted, and the carrier is selected from one or more of titanium dioxide, aluminum oxide, zirconium oxide and silicon dioxide; (2) mixing the product obtained in the step (1) with cerium dioxide, grinding, then carrying out secondary calcination, and reducing; the content of the noble metal element is 0.2-1wt% of the mass of the carrier; the mass ratio of the product obtained in the step (1) to cerium dioxide is 1: (0.5-2); and the noble metal is selected from one or more of rhodium, ruthenium and palladium. The reverse water gas shift catalyst prepared by the preparation method has the advantages of high carbon dioxide conversion rate, good carbon monoxide selectivity and stable catalytic performance when being used for reverse water gas shift reaction.

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 closed mixotrophic microalgae culture method and a culture system thereof, and relates to the field of microalgae culture, comprising the following steps: step one, microalgae culture, pouring culture solution into a culture tank, adding microalgae to be cultured into the culture solution, and then fixing a sealing plate to the tank mouth of the culture tank by bolts to carry out closed culture; step two, gas supply and nutrient solution addition, sending carbon dioxide from a pipeline into an air distribution pipe through an air pump in an air supply component, forming bubbles from a nozzle and transporting them into the culture solution, and part of the bubbles that rise are gathered by a baffle to extend their residence time in a water body; step three, illumination, during the day, a first electric telescopic rod drives an arc-shaped telescopic plate to move downward to expose the internal transparent culture tank, and sunlight provides a light source to propagate the microalgae. The application can extend the residence time of carbon dioxide in the water body, improve the utilization rate of carbon dioxide, and increase the yield of microalgae.

The invention relates to a preparation method and application of a sandwich-structured gas diffusion electrode, and belongs to the fields of electrochemical catalysis, carbon dioxide utilization and renewable energy sources. According to the preparation method, a catalyst layer, a cation layer and a protective layer are prepared on a gas diffusion substrate in a layered manner; the catalytic layer, the cation layer and the protective layer respectively play roles in catalyzing CO2 reduction, adjusting the microenvironment, preventing cation leakage and the like. When applied, the sandwich-structured gas diffusion electrode GDE prepared by the method can be assembled on electrochemical carbon dioxide reduction modules such as a flow battery and a membrane electrode assembly (MEA) to carry out electrochemical reduction reaction of CO2, has high activity and high stability, and can avoid adding inorganic alkali metal cations into catholyte to inhibit hydrogen evolution side reaction. Based on the invention, GDE can be prepared through a microenvironment engineering means, and the performance of the electrochemical reduction reaction of carbon dioxide is improved.

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 provides a carbon dioxide absorbent, an absorption method and a preparation method of the carbon dioxide absorbent, and belongs to the field of carbon capture. The carbon dioxide absorbent comprises 20% of a decarburization solvent and 80% of deionized water, and the decarburization solvent is composed of a main absorbent, an activating agent, an antioxidant and a defoaming agent; the main absorbent is 100 parts by mass, and 100 parts by mass of the main absorbent is composed of 65-85 parts by mass of ethanolamine and 15-35 parts by mass of N-methyldiethanolamine; 7 to 9 parts by mass of an activating agent and 0.4 to 0.8 part by mass of an antioxidant. The invention aims to solve the problem of poor carbon dioxide absorption effect of a carbon dioxide absorbent in the prior art. The technical effects of high carbon dioxide absorptivity, low corrosivity, weak oxidative degradability and the like are 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.

The invention discloses a method for preparing methanol from carbon dioxide by coupling biomass direct combustion with wind, light, green and hydrogen. The method comprises the following steps: feeding biomass into a biomass boiler through a screw feeder and a trestle for direct combustion to obtain flue gas with high carbon dioxide content; the flue gas is treated to generate carbon dioxide gas with the pressure ranging from 1.4 MPaG to 1.6 MPaG; the method comprises the following steps: mixing carbon dioxide gas and hydrogen according to a molar ratio of about 1: 3, and compressing the mixture into 9.0 MPaG synthesis gas through a synthesis gas compressor; the synthesis gas flows to a gas-gas heat exchanger for heat exchange and temperature rise, and then is introduced into a methanol synthesis tower to form a material; the materials are subjected to heat exchange and cooling through a gas-gas heat exchanger and then flow to a high-pressure flash tank to be separated to form first gas and first liquid; the first liquid flows to a low-pressure flash tank to be separated to form second gas and second liquid conveyed to a crude methanol rectifying tower; separating and purifying the crude methanol in a rectifying tower to form methanol, fusel and overhead gas flowing to the biomass boiler; the utilization rate of the biomass carbon is improved.

The invention relates to the technical field of dry ice tail gas recovery, and discloses a tail gas recovery device for preparing dry ice, which comprises a tail gas pipe, the left end of the tail gas pipe is communicated with a tail gas outlet of dry ice production equipment, the right end of the tail gas pipe is communicated with an adsorption tower, and a carbon dioxide adsorption part is fixedly mounted in the adsorption tower. Carbon dioxide in tail gas is adsorbed through a carbon dioxide adsorption part in an adsorption tower, then the carbon dioxide is collected through a collecting cover, collected carbon dioxide gas flow enters a communicating pipe along an output pipe and then is guided into a compressor after being pressurized by a booster pump, the carbon dioxide gas is compressed through the compressor, and the compressed carbon dioxide gas flows into the tail gas. Compared with the mode that tail gas is introduced into a compressor, the mode that the tail gas is used as a raw material for preparing dry ice can purify the tail gas and increase the content of carbon dioxide, and then the high-temperature liquid state compressed by the compressor can meet the requirement for manufacturing the dry ice.

The invention relates to the technical field of carbon burying and utilization, and particularly discloses a method for increasing the carbon dioxide burying amount by using a gas-soluble foaming agent. The gas-soluble foaming agent is adopted, in-situ foaming can be achieved through formation water, the carbon storage space is increased, and the dynamic stability effect can be achieved after foam is broken; in-situ foaming is realized around a shaft through segmented alternate injection of a front gas-soluble foaming agent slug and a rear CO2 slug; by setting a real-time injection pressure feedback mechanism and dynamically adjusting the injection mode, early breakthrough and loss of carbon dioxide are reduced, the sealing efficiency is remarkably improved, and the burying effect of carbon dioxide is effectively improved.

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 utility model relates to the technical field of power distribution cabinets, and discloses a power distribution cabinet with a fire extinguishing structure, which comprises a cabinet body, the cabinet body is hinged with a cabinet door, the inner wall of the cabinet body is fixedly connected with a mounting rack, the side wall of the cabinet body is provided with a ventilation opening, and the inner wall of the cabinet body is provided with a fire extinguishing assembly. According to the power distribution cabinet with the fire extinguishing structure, the shielding plate shields the ventilation opening, the interior and the exterior of the cabinet body are isolated, oxygen is prevented from entering through the ventilation opening, a combustion-supporting substance is provided for flame combustion, the fire extinguisher is pressed down, carbon dioxide is sprayed into the cabinet body through the nozzle, the content of carbon dioxide in the cabinet body is increased, oxygen supply in the combustion process is restrained, and the combustion efficiency is improved. And by cutting off air exchange, increasing the content of carbon dioxide and reducing comburent required by combustion, fire extinguishment in the power distribution cabinet is realized, electric shock accidents are prevented, and meanwhile, the problems of short circuit or insulation damage caused by water and the like are solved.

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 present invention provides a source-sink matching method based on hydrate method and saline CO2 storage, which can improve the efficiency of carbon dioxide storage and reduce environmental risks. The method comprises the following steps: optimizing the terrestrial carbon source distribution points through a mixed integer linear programming (MILP) model to minimize the transportation cost and path. Accurately determine the geological characteristics of the storage target area using three-dimensional seismic data. Comprehensively evaluate the storage capacity of saline aquifers and hydrate method through numerical models, considering three mechanisms of structural storage, dissolution storage and residual gas storage. The MILP model is applied again for cost analysis and source-sink matching. The environmental footprint is analyzed through life cycle assessment (LCA) to ensure the sustainability of the storage scheme. The method provides an efficient, economical and environmentally friendly solution for geological storage of carbon dioxide.

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 heat recycling device, a carbon dioxide energy storage system and a control method of the carbon dioxide energy storage system. The heat recycling device comprises a cold storage container, a first heat storage container, a second heat storage container, a first heat exchanger, a second heat exchanger, a third heat exchanger and a fourth heat exchanger. The first heat exchanger and the second heat exchanger are sequentially connected to the output end of a compressor of the energy storage assembly. The third heat exchanger and the fourth heat exchanger are sequentially connected to the input end of a turbine of the energy release assembly. The heat recycling device comprises a first heat circulation loop and a second heat circulation loop, and the first heat circulation loop comprises a cold storage container, a first heat exchanger, a first heat storage container, a third heat exchanger and a fourth heat exchanger which are sequentially and circularly connected. The second heat circulation loop comprises a cold storage container, a second heat exchanger, a second heat storage container and a fourth heat exchanger which are sequentially and circularly connected. According to the scheme, the heat recycling efficiency in the carbon dioxide energy storage system and the comprehensive efficiency of the system can be improved.

The invention relates to the technical field of CCUS, and discloses an offshore sandstone CCUS technology optimization method and system and computer equipment. The offshore sandstone CCUS technology optimization method comprises the steps that an offshore area with a sandstone layer is obtained, an offshore platform is established, and direct air capture equipment is arranged on the offshore platform; a novel amine-containing absorbent is adopted to absorb carbon dioxide in the air which is directly absorbed by the air capturing equipment; the absorption tower adopts a composite material and a coating structure; fluid dynamics simulation software is adopted to calculate air flow and liquid flow in the carbon capture process, simulation data are analyzed, and fluid distribution in the tower and the tower body structure are optimized; conveying the extracted carbon dioxide to a geologic structure under a seabed of a storage place through a pipeline for sealing and storing; and evaluating the potential influence on the marine ecosystem by adopting an ecological model and environment simulation software, and generating an influence report. The carbon dioxide capturing and storing efficiency and safety can be improved, and meanwhile the influence on the environment is minimized.

The invention relates to the technical field of building materials, in particular to magnesium oxide carbonized foundation solidified soil and a preparation method and application thereof.Soil is adopted as filler, active magnesium oxide is adopted as a cementing material, and meanwhile microorganisms capable of generating carbonic anhydrase are added, so that the carbon sequestration capacity is improved; and a self-developed reinforcing agent is added to reinforce the solidified soil, so that the carbon dioxide absorption amount is synergistically improved, and the prepared solidified soil is high in mechanical property and carbon sequestration capacity and can be used as a foundation raw material for construction.

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 invention discloses a method for carbonizing a cement-based material through cooperation of foam and CO2, according to the method, CO2 foam fluid prepared from CO2 and a foaming agent solution is used for carbonizing the cement-based material, after the foam and CO2 are transported into internal pores of the cement-based material, the foam decays to enable the CO2 and the cement-based material to be subjected to a carbonization reaction, and simultaneous uniform carbonization of the interior and the exterior of the cement-based material is achieved. According to the invention, the utilization rate of CO2 can be improved, on one hand, the specially designed foaming agent is introduced to obviously increase the contact area between gas (CO2) and solid (cement-based material), and the mode of increasing the contact area can ensure that CO2 fully participates in the carbonization reaction process, so that the utilization rate of CO2 is improved; on the other hand, as CO2 fully participates in the reaction, the emission of unreacted carbon dioxide is reduced, and the conversion efficiency of the carbonization reaction is improved, so that a more remarkable effect is achieved in the whole emission reduction target practice.