390 results about "Carbonation" patented technology

The invention relates to the field of coal seam anti-reflection, and particularly discloses a coal seam carbon dioxide and static expanding agent synergistic anti-reflection system and method. Slurry prepared by mixing a static expanding agent and water is injected into the expansion fracturing drill hole, in the process that the static expanding agent is subjected to hydration reaction and generates expansion stress, carbon dioxide gas is injected into the expansion fracturing drill hole through the carbon dioxide gas injection pipe, carbon dioxide and the hydration product of the static expanding agent are subjected to carbonization reaction to generate larger expansion stress, and the expansion fracturing drill hole is formed. Expanding the coal body fractures to form expansion fractures; the carbon dioxide is driven by differential pressure to seep into a coal matrix along expansion fractures, and adsorbed gas is driven to be desorbed into a free state through a competitive adsorption effect; and under the combined action of extraction negative pressure and carbon dioxide displacement, the free-state gas moves from the fracture channel to the extraction drill hole, and extraction is conducted through the gas extraction system. Carbon dioxide and the static expanding agent cooperate to improve permeability of the coal body, the displacement effect of carbon dioxide on gas is promoted, and the gas extraction effect is improved.

The invention relates to the technical field of building solid waste resource utilization, and discloses a bamboo-based biochar and cement-based waste-based artificial aggregate preparation method, which comprises: using cement-based waste powder as a main raw material, and using ordinary Portland cement and bamboo-based biochar as auxiliary materials, firstly carrying out alkali modification or ultrasonic modification treatment on the bamboo-based biochar, and then carrying out drying to obtain the artificial aggregate based on the bamboo-based biochar and the cement-based waste. The surface property is improved; then mixing the materials, and preparing a regular and uniform aggregate blank by adopting a disc granulation method and accurately controlling the inclination angle and the rotating speed in combination with a reserved dry powder rolling and sticking process; finally, the blank is cured, particularly carbonization curing is adopted, and carbon dioxide and cement hydration products react to generate calcium carbonate to fill internal pores. According to the invention, interface bonding is enhanced through the modified charcoal, the porosity is reduced through carbonization curing, the prepared artificial aggregate has the advantages of high compressive strength and low water absorption, and high-proportion utilization of cement-based wastes is realized.

The invention provides a concrete carbon sequestration process parameter optimization method, and belongs to the technical field of concrete carbon sequestration. Chemical component data and real-time parameters are input into a carbonization parameter intelligent regulation and control model to obtain regulation values of carbon dioxide concentration, reaction temperature, reaction pressure and water content, and a carbonization reactor is dynamically regulated and controlled; when the carbonization depth is greater than 20mm and the carbon sequestration amount reaches more than 80% of a theoretical maximum value, completing carbonization treatment and recording a process optimization result, and training an intelligent regulation and control model through a parameter regularization framework based on adaptive weight attenuation so that the intelligent regulation and control model can output an optimal parameter adjustment value according to the chemical component difference of the raw material and the real-time change of the carbonization process; the technical problem that the carbon sequestration efficiency is unstable due to the fact that waste concrete carbon sequestration process parameters cannot be dynamically optimized and adjusted according to the chemical component difference of raw materials and the real-time change of the carbonization process is solved.

This invention relates to the field of cement materials technology, specifically to an anti-carbonation early-strength agent for hypersulfate cement and its preparation method. The anti-carbonation early-strength agent comprises: a modified core formed by a water-soluble silicate and a water-storing superabsorbent polymer; an aluminum- and calcium-containing layered bimetallic hydroxide intermediate layer coating the outer surface of the core; and a silicon and / or aluminum active nanomaterial shell layer coating the outer surface of the intermediate layer, thereby forming a Si / Al@Ca / Al-LDHs@modified core dual-core-shell structure. The anti-carbonation early-strength agent of this invention effectively solves the problems of long setting and hardening time, low early strength, and easy carbonation inherent in traditional hypersulfate cement.

The invention discloses a metal mine space carbon sequestration system and method based on upward filling of a segmented stope. A closed filling chamber is arranged in a staged blasting stope between a lower-stage filling body and an upper-stage unblasted ore body; an upper-stage drift roadway is arranged between the top of the closed filling chamber and the upper-stage unexploded ore body; a horizontal filling pipeline and a CO2 horizontal filling pipeline which are used for conveying the filling slurry and the CO2 gas to the closed filling chamber are arranged in the upper-stage access roadway, and the CO2 gas is mineralized to realize carbon sequestration through the filling slurry and the CO2 gas in the closed filling chamber. According to the method, the closed filling chamber is arranged in the goaf of the metal mine to seal and store the CO2 gas, the CO2 is utilized to be subjected to carbonization reaction with clinker minerals and hydration products in the filling cementing material, so that the dual purposes of'filling reinforcement 'and'filling carbon sequestration' are achieved, and environmental pollution cannot be generated in the whole CO2 gas sealing and storing process.

Low CAPEX / OPEX, effective, and environmentally friendly process of rapidly extracting lithium from geothermal brines and producing lithium carbonate. The method includes adjusting a unique parameter determined based on the modified alkalinity in a quantity of the geothermal brine to a preset value without needing to purposefully modify the pH. Interactions of the anionic reactant species with components within the geothermal brine cause a solid form of the lithium to precipitate out of the geothermal brine. After the solid separation, the spent brine is environmentally safe and returned underground or transported to a reservoir.

The invention belongs to the technical field of dangerous solid waste treatment, and relates to a cascade deep detoxification method and system for waste incineration fly ash. Comprising the following steps: carrying out natural carbonation pretreatment on the fly ash to stabilize the pH value of the fly ash to be about neutral so as to obtain pretreated fly ash; carrying out primary washing on the pretreated fly ash by adopting an EDTA (Ethylene Diamine Tetraacetic Acid) solution, and carrying out solid-liquid separation to obtain primary washing slag; wherein the residual heavy metals in the first-stage washing slag obtained by the first-stage washing are mainly distributed in a weak acid extraction state; and carrying out second-stage washing on the first-stage washing slag by adopting an acetic acid solution. The method provided by the invention synergistically realizes deep and efficient removal of heavy metals in fly ash, and the final product meets safe disposal or resource utilization standards.

A low capital and environmentally friendly process of extracting lithium from natural brines. The method includes adjusting a unique parameter defined based on the modified alkalinity in a quantity of the natural brine to a preset value independent of the pH. Interactions of the anionic reactant species with lithium within the natural brine cause a solid form of the material that then precipitates out of the natural brine. After the solid separation, the spent brine may be returned to underground or transported to a reservoir.

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.

A low capital and environmentally friendly process of extracting materials from slurries. The method includes adjusting a unique parameter determined based on the modified alkalinity in a quantity of the slurries to a preset value independent of the pH. Interactions of the anionic reactant species with lithium within the slurries causes a solid form of the material to precipitate out of the slurries. After the solid separation, the spent liquid may be returned to underground surface water systems or transported to a storage.

The invention belongs to the technical field of building materials, and particularly relates to a low-calcium carbon sequestration cementing material as well as a preparation method and application thereof. The low-calcium carbon sequestration cementing material disclosed by the invention is prepared from the following main mineral components in percentage by weight: 55 to 80 percent of calcium silicate, 15 to 35 percent of tricalcium disilicate and 5 to 15 percent of gehlenite. The low-calcium carbon-sequestration cementing material has excellent carbonization activity, can seal a large amount of carbon dioxide, can obtain excellent mechanical properties in a short time, and provides a new way for solving the problem of carbon emission in the cement industry and recycling industrial solid wastes such as magnesium slag and fly ash.

The invention discloses a solid waste landfill crack combination self-repairing material based on microbial mineralization and application, and belongs to the field of environmental geotechnical engineering. The method comprises the steps that firstly, a klebsiella liquid and a calcium source cementing liquid are prepared, grouting holes are formed in the side slope, the bacterial liquid and the cementing liquid are injected in batches, and internal cracks are filled with a microorganism induced calcium carbonate precipitation (MICP) technology; and then, a fiber reinforced guniting material formed by compounding field soil, active magnesium oxide and chopped fibers is adopted to spray and cover the surface layer of the slope, and a compact sealing layer is formed through carbon dioxide carbonization. By combining internal MICP curing and surface layer fiber reinforced magnesium oxide carbonization sealing, a synergistic protection system with strong inside and tough outside is constructed, the anti-permeability and stability of the slope are improved, meanwhile, the toughness, crack resistance and long-term durability of a surface layer sealing layer are remarkably enhanced, and the service life of the slope is prolonged. And the method is particularly suitable for slope treatment of projects with high anti-seepage requirements such as solid waste landfills and the like.

The invention discloses a hydrophobic-carbonization coupled chloride ion diffusion bonding prediction method and system, and belongs to the field of inorganic cementing material durability numerical analysis and multi-field coupling modeling. The method comprises the following steps: dividing chloride ions in a material into free chloride ions and combined chloride ions, and establishing a total chloride ion concentration expression relationship; under a two-dimensional transmission condition, establishing a chloride ion diffusion-binding coupling control equation based on mass conservation and Fick diffusion law, and introducing a hydrophobic correction factor and a carbonization influence factor; a Langmuir isothermal adsorption model and a first-order kinetic equation are adopted to describe the chloride ion binding behavior; and carrying out numerical solution on the unsteady migration and combination process of the chloride ions in the cementing material to obtain the spatial and temporal distribution of the chloride ion concentration under different conditions. The method can quantitatively describe the coupling influence of hydrophobic modification and carbonization on chloride ion diffusion and binding behaviors, is high in prediction precision, and is suitable for durability analysis and engineering life evaluation of alkali-activated materials and geopolymers.

This application discloses a composite mineralization material, its preparation method, and its application, belonging to the technical field of mineralization materials for water purification. The preparation method includes the following steps: (1) Selecting strontium-containing ore, zinc-containing ore, metasilicic acid-containing ore, and carbonate-containing ore from natural ores, crushing the above ores respectively, and calcining them at 600-800℃ for 1-4 hours; (2) Soaking the calcined ores in pure water, then performing carbonation treatment, air-drying, and performing component analysis to screen and obtain the strontium-containing mineralization material, zinc-containing mineralization material, metasilicic acid-containing mineralization material, carbonate-containing mineralization material, and basic material; (3) Crushing the mineralization material and basic material again, mixing them according to the weight ratio to obtain the composite mineralization material. The composite mineralization material prepared by this method can solve the problem of excessive metal elements and organic matter in natural ores, and can achieve stable dissolution of minerals, reduce scaling, and improve the service life of water purification devices.

The application relates to the technical field of building materials, and discloses a kind of negative carbon high-performance concrete and a preparation method thereof, adopt ferrochrome slag as aggregate, utilize slag powder, silica fume and waste stone powder to partially replace cement to prepare concrete, which not only reduces natural resource and energy consumption, reduces CO2 emission, but also promotes efficient utilization of industrial solid waste; in addition, the mechanical interlocking structure is formed between the spherical pores on the surface of ferrochrome slag and cement stone, which can improve the interface microstructure between aggregate and cement paste; at the same time, the olivine phase on the surface of the spherical pores dissolves and occurs carbonation reaction under high-temperature alkaline environment during high-temperature carbonization process, and needle-like magnesium carbonate crystals are generated in the spherical pores to fill the interface, thereby further optimizing the interface microstructure and improving the overall mechanical properties of the concrete.

The present invention pertains to an additive for use in a hydraulic composition. The additive contains organic fibers and an amine compound. The amine compound is attached only to the fiber surfaces of the organic fibers. The present invention also pertains to a hydraulic composition cured product that contains this carbonation-promoting additive for the hydraulic composition and that is cured through carbonation. As a result, provided are: a carbonation-promoting additive for a hydraulic composition, the carbonation-promoting additive being capable of enhancing carbon dioxide fixability after being cured; a hydraulic composition cured product containing the same; and a method for producing the same.

The application discloses a method for improving carbonization performance of high-magnesium low-carbon clinker, which comprises the following steps: (1) mixing high-magnesium low-carbon clinker, an acid activator and water, and pressing into a shape; wherein the acid activator comprises phosphogypsum and MgSO4; (2) drying the shaped sample, regulating the water content, carbonizing, and obtaining a carbonization product. The acid activator is prepared by taking phosphogypsum and MgSO4 as main raw materials, and is applied to the carbonization process of high-magnesium low-carbon clinker, so that the carbonization intensity and carbon fixation rate of the high-magnesium low-carbon clinker can be significantly improved, and high-value resource utilization of the high-magnesium limestone low-carbon clinker is realized; and the preparation method is relatively simple and convenient to operate, has good economic and environmental benefits, and is suitable for popularization and application.

The purpose of the present invention is to provide a carbonation curing system and a carbonation curing method which are capable of improving the efficiency of reaction between CO2 gas and concrete. The carbonation curing system comprises: at least two carbonation curing parts; a gas flow part through which a CO2-containing gas flows between the carbonation curing parts; a CO2 gas supply port for supplying the CO2-containing gas; and a CO2 gas discharge port for discharging the CO2-containing gas that has decreased CO2 concentration. In the carbonation curing system and the carbonation curing method, the carbonation curing parts are each provided with concrete that differ from each other in the degree of progress of carbonation curing, and the CO2-containing gas is supplied along a flow path of the CO2-containing gas so as to flow from concrete having a higher degree of progress of carbonation curing to concrete having a lower degree thereof.

A carbon dioxide capture device by carbonation of materials (10), comprising: A gas inlet (101); A blower (102); A gas reservoir (103); A main circuit (110) connecting the gas reservoir (103) and the reactor (120) and comprising: an actuated damper (111); a residual methane oxidation device (114), this device itself comprising a combustion gas inlet (115); A carbonation reactor (120); A gas recirculation circuit (130) between the reactor and the combustion gas inlet (115) of the residual methane oxidation device (114) comprising: an actuated damper (131); a gas separation device (132), comprising an inlet (133), an outlet for the CO2-concentrated gas (134) and an outlet for the CO2-depleted gas (135); A vent circuit (140) positioned on the gas recirculation circuit (130) downstream of the gas separation device (132) and comprising: an actuable damper (141);an exhaust vent (142) to the atmosphere; An oxidant supply circuit (150), connected to the oxidant supply (115) of the residual methane oxidation device (114) and comprising: an actuable damper (151); an oxidant inlet (152); A CO2-rich gas reintroduction circuit (160) connecting the outlet for the CO2-concentrated gas (134) of the gas separation device (132) and the gas tank (103);

A beverage container includes a removable lid that is operable to carbonate a liquid in the container. In particular, the lid may include a cartridge portion that includes a cartridge including a compresses gas that may be selectively activated to provide gas to the liquid in the container.

This invention provides a novel technology that can enhance the carbonation sensation in carbonated beverages. [Solution] A carbonated beverage containing monomenthyl succinate and sclareolide.

A gas source for pressuring sparkling and other beverage containers, e.g., to re-pressurize the container to keep a carbonation level of beverage during storage. A gas cylinder can include a cap with a flange and catch below the flange. The catch can be engaged by a cylinder support to move the cylinder into contact with a piercing element to pierce the gas outlet of the cylinder and form a seal between the cylinder and gas receiver. A pressure indicator can have a single pressure sensor to indicate a capacity of a gas cylinder to deliver pressurized gas and a pressure in a beverage container.

On-the-go carbonation applications, devices and methods are provided, which enable carbonating and enhancing liquid content in various containers, such as drinking bottles, in relation to users' preferences and activity patterns. Devices include a sealed container holding a gas canister, an actuator configured to release gas from the gas canister and break a seal of the sealed container, and a gas passage configured to deliver the released gas, optionally with flavoring and / or supplement additives—into the liquid. Various configurations of the devices are provided to yield predefined carbonation and mixing of additives by simple actuation. Disclosed methods of carbonation enable configuring the device to be portable and attachable to various types of liquid container and monitor the usage of the devices. Applications provide users with suggestions for further use of the on-the-go carbonation device, in relation to the monitored use.

The invention relates to the technical field of concrete detection, in particular to an instrument for detecting concrete carbonization depth by using an imaging technology. According to the technical scheme, the device comprises a box body, a first cavity and a second cavity are formed in one side of the box body, holes of the specified size are punched in the wall face through a punching assembly, then residual concrete chippings in the holes are blown away through a cleaning assembly, the interiors of the holes are kept clean and tidy, then a phenolphthalein alcohol solution is added into a storage frame, and the phenolphthalein alcohol solution is stored in the storage frame; the phenolphthalein alcohol solution is sprayed into the hole through the spraying assembly, the color of the concrete contaminated with the phenolphthalein alcohol solution can be changed due to different pH values, so that the color of the uncarbonized concrete is changed, then the detection assembly extends into the hole, and the color-changing part in the hole is detected by utilizing an imaging technology; and digital images and depth data are obtained and are convenient to analyze and store, so that the problem of detection result deviation easily caused by sight obstruction during detection is solved.

The invention belongs to the technical field of building materials, and particularly relates to a nano C-S-H-based solid amine internal carbonizer as well as a preparation method and application thereof. The preparation method of the nano C-S-H-based solid amine internal carbonizer comprises the following steps: (1) pumping a silicate solution, a calcium salt solution and an alkali solution into a full-backmixing explosive nucleation reactor for reaction to obtain first mixed slurry; (2) pumping an organic amine solution into the full-backmixing explosive nucleation reactor, and continuously reacting to obtain second mixed slurry; and (3) transferring the second mixed slurry out of the full-backmixing explosive nucleation reactor, reacting at 40-90 DEG C for 0.5-12 hours, carrying out solid-liquid separation, and washing and drying the obtained solid to obtain the nano C-S-H-based solid amine internal carbonizer.

This invention provides a calcium carbonate compound and an inorganic molded body with shape controlled by having a high aspect ratio. The invention relates to a calcium carbonate compound having a phosphorus content of 1000 ppm or more and 15000 ppm or less, a sulfur content of 2000 ppm or less, and an aspect ratio (mean major axis to mean minor axis) of 6 or more and 19 or less.

The application discloses a self-sensing recycled aggregate cement stabilized macadam mixture and a preparation method thereof. The mixture comprises: aggregate, cement, liquid-solid carbonation modification solution and conductive component; wherein, the calcium chloride solution and sodium bicarbonate solution are used to replace mixing water and form calcium carbonate deposition products inside the mixture to regulate the pore structure and interface state of the recycled aggregate cement stabilized macadam mixture; the chopped carbon fiber is located in the mixture matrix after liquid-solid carbonation regulation and forms a conductive path with piezoresistive response characteristics, so that the mixture generates identifiable apparent volume resistivity change in the compression process. The application enables the mixture to maintain the basic road performance of the road base layer, generates identifiable apparent volume resistivity change in the compression process, is beneficial to damage feature point identification and electrical early warning before peak damage, and can be used for functional preparation of the recycled aggregate cement stabilized macadam base layer material.

The present invention discloses a solid adsorption cycle carbon capture device and method, the device performs carbon capture through an alkali metal-based solid absorbent, and the device at least comprises: a fluidized reactor having a hydration reaction zone and an adsorption reaction zone which are relatively isolated; a hydration bed layer is arranged at the bottom of the hydration reaction area, and water vapor introduced from the bottom of the hydration bed layer is subjected to fluidized hydration reaction; an adsorption bed layer is arranged at the bottom of the adsorption reaction area, and a fluidized adsorption reaction is carried out through carbon-containing gas introduced from the bottom of the adsorption bed layer; the hydration bed layer is communicated with the adsorption bed layer through a vertical pipe; and a hydrated adsorbent particle dense-phase region is arranged in the vertical pipe and is used for isolating the hydration reaction region from the adsorption reaction region. According to the scheme of partition reaction, the contradiction that the reaction rates between hydration and carbonation are not matched is fundamentally solved, the performance of the adsorbent can be exerted to the maximum extent, and the treatment efficiency of carbon capture is effectively improved; the hydration reaction and the adsorption reaction can be subjected to process reinforcement through the fluidized reactor, so that the efficiency of the hydration reaction and the adsorption reaction is effectively improved.

The invention discloses a method for realizing circulating clarification utilization of sugar industry filter mud based on calcination, which comprises the following steps: filter mud drying: scattering and drying wet filter mud to obtain dry filter mud; suspension flash burning: mixing the dry filter mud with limestone powder, calcining by utilizing secondary hot air in a suspension cooling process, removing organic matters in the dry filter mud and partially decomposing calcium carbonate in the mixed material; performing fluidized bed roasting: introducing high-pressure air into the mixed material subjected to suspension flash burning treatment to enable the material to utilize waste heat of the material in a boiling state to complete deep decomposition of calcium carbonate so as to obtain a high-temperature finished product; suspension cooling: cooling the high-temperature finished product to obtain a low-temperature finished product; digesting: digesting a low-temperature finished product to prepare lime milk; and flue gas reutilization: the CO2-containing flue gas generated by suspension flash burning is sequentially used as a drying heat source for filter mud drying, and is used for a sugar juice clarification and carbonation process after being purified. According to the invention, the pollution problem is solved, resource utilization is realized, the use of limestone is reduced, the flue gas heat of the system is fully utilized, and the energy consumption is reduced.