80 results about "Carbonation" patented technology

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

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.

A slag carbonation system linked to synthetic gas production, according to one embodiment of the present invention, comprises: a synthetic gas production apparatus for producing synthetic gas containing hydrogen and carbon monoxide from a mixed gas containing carbon dioxide; a carbonation apparatus for carbonating slag by using carbon dioxide contained in the synthetic gas obtained from the synthetic gas production apparatus; and a gas-liquid separator for separating moisture contained in the synthetic gas obtained from the carbonation apparatus.

Provided is a carbonate-containing granular material production method with which it is possible to produce a carbonate-containing granular material at a cost lower than when using conventional methods.　The present invention has a carbonation step for bringing, into contact with a carbonation-target granular material at a maximum temperature of higher than 0°C to lower than 100°C, either water, a carbonation accelerator, and at least one among a carbon dioxide-containing substance, a carbonate ion-containing water, and a hydrogen carbonate ion-containing water, or a carbonation accelerator and at least one among a carbon dioxide-containing water, a carbonate ion-containing water, and a hydrogen carbonate ion-containing water. The total amount of water brought into contact in the carbonation step is 1 mass% or more of the carbonation-target granular material. The carbonation accelerator contains bacteria. The bacteria are at least one selected from the genus Bacillus, the family Bacillaceae, the class Bacilli, the family Clostridiaceae, the family Micrococcaceae, the family Microbacteriaceae, or the family Comamonadaceae.

This invention discloses a method for preparing high-purity calcium carbonate from calcium-containing raw ore through a tiered processing technique, belonging to the field of high-purity calcium carbonate preparation technology. This method addresses the problems of insufficient purity and low resource utilization in existing natural mineral purification techniques by employing a tiered process of "acid leaching extraction-primary carbonation" and "roasting-digestion-secondary carbonation" to achieve stepwise recovery and deep purification of calcium from calcium-containing raw ore, simultaneously producing two high-purity calcium carbonate products with different purity levels.

A module for continuously generating high-level carbonated water according to an embodiment relates to a module for continuously generating high-level carbonated water for continuously dispensing high-level water in a direct water type. The module includes: a mixing container part in which water W and carbon dioxide are mixed to generate the carbonated water; a micro water jet unit that generates a plunging jet in a direction of gravity with respect to a surface of water filled in the mixing container part; a carbonic acid gas supply unit that injects carbon dioxide gas from a lower side of the mixing container part to form a high-pressure carbonic acid gas layer in an opposite direction of gravity by buoyancy; and a carbonated water outlet unit that increases a dispersion of carbonic acid gas bubbles due to a turbulent flow formed by the micro water jet unit and the carbonic acid gas supply unit in the mixing container part to dispense the carbonated water to a lower portion of the mixing container part while the carbonated water dissolved instantaneously keeps a carbonation pressure of 3.5 or more, in which the micro water jet unit or the carbonic acid gas supply unit includes a member for an inner diameter shaft pipe for reducing an inner diameter of a first pipe part so that a microinjection port is formed in the first pipe part.

The application provides a method for recovering and regenerating lithium iron phosphate battery positive electrode powder, which comprises the following steps: pretreating the retired lithium iron phosphate battery positive electrode powder, constructing a composite leaching system by using polyhydric alcohol compounds and small-molecule organic acid compounds, and simultaneously realizing efficient leaching of lithium elements and selective precipitation of iron elements; the leaching solution is carbonated and precipitated to recover lithium salt, and after the iron-based precipitate is mixed with the lithium salt, carbon source and dispersant are added, and the regenerated lithium iron phosphate positive electrode material is prepared by staged calcination; the polyhydric alcohol-small-molecule organic acid is used as the core to construct the composite leaching system, and the method is green, environmentally friendly and weakly corrosive, and does not need additional oxidizing agents or reducing agents, so that the element separation process is simplified; the closed-loop recovery of lithium and iron elements is realized, the resource utilization rate is high, the electrochemical performance of the regenerated positive electrode material is excellent; the process operation is mild, the parameters are easy to control, the method is suitable for large-scale industrial production, and the method has good environmental benefits, economic benefits and application prospect.

The utility model relates to the technical field of calcium carbonate preparation technique discloses a kind of for calcium carbonate preparation and neutralization tank, including the tank body of bottom setting with discharge port, and the tank cover of tank body top by bolt installation, the centre of circle of tank cover top is equipped with stirring gas injection subassembly;Stirring gas injection subassembly includes rotation installation in the centre of circle of tank cover stirring shaft, and for driving the rotation of stirring shaft driving structure, multiple stirring vanes are welded in the one end of stirring shaft located in the inside of tank body, the centre of circle of tank body is equipped with airflow channel, and the periphery of tank body is longitudinally equipped with multiple groups of vent hole with equidistance, and vent hole is connected with airflow channel. The used for calcium carbonate preparation and neutralization tank, through rotating type porous dispersion structure, realizes the dynamic uniform distribution of CO2 in three-dimensional reaction space, makes CO2 injection point with spiral trajectory cover full tank volume, eliminates gas dead angle, avoids local enrichment, improves carbonation reaction rate spatial consistency.

The present invention relates to a method for manufacturing a carbonated binder using carbon dioxide for treating captured carbon dioxide, a deep cement mixing method for improving soft ground using same, a carbonation reaction apparatus used in the method for manufacturing a carbonated binder, and a carbon dioxide capture device using the carbonation reaction apparatus. The method for manufacturing the carbonated binder comprises: (a) mixing a powdered binder with mixing water to generate a liquid mixed binder; and (b) reacting the generated liquid mixed binder with carbon dioxide by means of a carbonation reaction apparatus to produce a carbonated binder, wherein the carbonation reaction apparatus may be configured to operate in a continuous flow manner in which the liquid mixed binder is sequentially introduced, reacted with carbon dioxide, and discharged.

The application provides a preparation method of natural hydraulic lime, which comprises the following steps: calcining natural hydraulic lime raw material to obtain a calcined product; and mixing the calcined product with digestion water containing a digestion regulator to perform a digestion reaction, so as to obtain natural hydraulic lime, wherein the digestion regulator is selected from hydrochlorides of alkali metals, sulfates of alkali metals and hydrofluorides of alkali metals. The method is simple in process and convenient to operate, and the natural hydraulic lime obtained by using the method has high carbonation activity.

This invention discloses a method for preparing lightweight calcium carbonate from dolomite, comprising the following steps: crushing, grinding, and calcining raw dolomite to obtain lightly calcined dolomite powder; subjecting the lightly calcined dolomite powder to acid leaching to obtain an acid leaching solution; adjusting the pH of the acid leaching solution to 12.3-12.6 with alkali, then introducing carbon dioxide to bring the pH to 7.6-8.4, followed by solid-liquid separation to obtain lightweight calcium carbonate. This invention, through calcination, acid leaching, and carbonation of dolomite, produces lightweight calcium carbonate that not only meets the requirements for precipitated calcium carbonate for plastics in the standard "General Industrial Depositional Calcium Carbonate," but also meets the requirements for calcium carbonate for rubber, coatings, and papermaking, thus possessing significant application value and broad prospects.

The application provides a degradable water-based ink and a preparation method thereof, and belongs to the technical field of novel ink preparation. Unsaturated vegetable oil is used as raw material, non-isocyanate polyhydroxy polyurethane is prepared through epoxidation, CO2 carbonation and diamine ring-opening polymerization, carboxyl groups are introduced through acid anhydride, and water-phase self-emulsifying dispersion is realized through main neutralization of arginine and auxiliary neutralization of choline hydroxide, so that biological base and low odor and low VOCs are considered from the source; the obtained polyhydroxy polyurethane has the functions of connecting material and pigment anchoring and dispersing, the dependence on traditional dispersants and a large amount of surfactants is reduced through segmented pulping and ink releasing process; nanocellulose is introduced to realize shear thinning and thixotropic recovery to improve printing adaptability, and a cobalt-free manganese / iron catalytic drying system is used to improve the scratch resistance and water resistance under mild conditions; through the above multi-link cooperation, the comprehensive balance of sustainability, stable dispersion and printing performance is realized.

This invention belongs to the field of zinc oxide synthesis technology, specifically relating to a highly dispersible modified zinc oxide composite material and its preparation method. The preparation method of this invention is as follows: CO2 is passed into a Ca(OH)2 aqueous solution to carry out a first carbonation reaction, obtaining a calcium carbonate slurry; the calcium carbonate slurry and a zinc ion solution are first mixed to obtain a mixture; the mixture is second mixed with carbonate ions, and the zinc ions and carbonate ions undergo an in-situ carbonation reaction on the surface of the calcium carbonate particles to obtain a zinc carbonate composite material; the zinc carbonate composite material is calcined to obtain a zinc oxide composite material; the zinc oxide composite material, a coupling agent, and water are third mixed to carry out a coupling reaction, obtaining a modified zinc oxide composite material. The preparation method of this invention can achieve in-situ growth of zinc carbonate on the surface of calcium carbonate, followed by calcination to decompose the zinc carbonate into zinc oxide, obtaining highly dispersible zinc oxide, which is then modified with a coupling agent to obtain highly dispersible modified zinc oxide.

This invention proposes a long-cycle carbonation curing process for seawater sand concrete. It employs a three-stage synergistic approach: "pre-curing-free demolding – long-cycle carbonation – subsequent water curing," eliminating the need for traditional pre-curing. Through vibration compaction and shortened in-membrane curing, direct demolding and carbonization are achieved, overcoming the obstruction of CO2 diffusion channels caused by premature surface dehydration and densification. Under the synergistic effects of 95% high CO2 concentration, 45℃ medium temperature, and 60% RH, the process significantly enhances the CO2 penetration rate and mineralization reactivity in low water-cement ratio seawater sand concrete, ensuring uniform deep carbonization from the surface to the interior within a 28-day long-cycle curing period. Subsequent water curing up to 56 days activates the continuous hydration of unhydrated clinker, effectively eliminating the risk of carbonation brittleness. The resulting concrete possesses excellent mechanical strength, carbon sequestration capacity, and resistance to chloride ion penetration, making it suitable for marine engineering structures.

This invention discloses an additive for regulating calcium carbonate crystallization and its application in a lime slurry carbonation reaction system. The additive is a water-soluble substance capable of forming silicate ions, with the silicate ions comprising 0.01 wt.% to 5 wt.% of the prepared calcium carbonate. This additive can suppress the interference of impurities such as Mg and Al on calcium carbonate crystallization during lime slurry carbonation, achieving the preparation of calcium carbonate with uniform particle size and regular morphology.

This invention discloses a method for preparing red mud-phosphogypsum roadbed material through hydration-carbonation synergistic curing, belonging to the field of resource utilization of bulk industrial solid waste and road engineering technology. The invention involves drying, grinding, and sieving red mud and phosphogypsum to obtain red mud powder and phosphogypsum powder, respectively. The red mud powder, phosphogypsum powder, blast furnace slag powder, and cement are then thoroughly mixed in a certain proportion, water is added, and the mixture is pressed into shape and then subjected to hydration-carbonation synergistic curing to obtain the red mud-phosphogypsum roadbed material. This invention can transform red mud, phosphogypsum, and blast furnace slag into materials with good water resistance and mechanical strength that meet the requirements of roadbed construction projects. It enables the resource utilization, harmlessness, and reduction of industrial solid waste such as red mud and phosphogypsum, while simultaneously achieving carbon dioxide fixation through the carbonization process, thus achieving the goal of synergistic efficiency improvement in pollution reduction and carbon reduction, generating significant economic, social, and environmental benefits.

According to an embodiment of the present invention, a mineral carbonation system may comprise: a cooler which cools flue gas; a carbon dioxide absorption tower which absorbs carbon dioxide contained in the flue gas; a carbonation reactor which mixes a solution discharged from the carbon dioxide absorption tower and steel slag to carbonate a calcium-containing material in the steel slag; and a dehydrator which dehydrates the slag mixture obtained from the carbonation reactor to obtain carbonated slag.

The application provides an evaluation method for prolonging the durability life of a concrete structure pole by a surface corrosion-resistant coating, and relates to the technical field of concrete structure durability evaluation, and comprises the following steps: a plurality of monitoring points are arranged on the surface of a target pole concrete, and coating thickness, adhesion and electrochemical impedance spectrum characteristic values are collected; equivalent retardation coefficients of the coating at each point under a combined environment of chloride ions and carbon dioxide are calculated, and are expanded into time-varying equivalent retardation coefficients; the coefficients are input into a reference model as attenuation factors, chloride ion diffusion coefficient time-varying functions and carbonation rate coefficients are corrected, and local life attenuation curves of each point are generated; the running time corresponding to the first reaching of a durability limit state threshold is taken as a whole durability life prediction value; the value is compared with a theoretical failure time under a non-coating condition, and a prolonging life value of the corrosion-resistant coating on the durability life of the pole concrete structure is calculated, thereby providing a scientific basis for quantitative evaluation of the coating protection effect.

The application discloses a kind of concrete rapid carbonation test device and method.The device includes pressure gas mixing system, carbonation unit, air valve, timer and central controller;Pressure gas mixing system includes carbon dioxide concentration control system, temperature control system, humidity control system, pressure control system, convection fan, air release valve and pressure mixed gas cabin;Carbon dioxide concentration control system is used to monitor and regulate the carbon dioxide concentration in pressure mixed gas cabin, temperature control system is used to monitor and regulate the temperature in pressure mixed gas cabin, humidity control system is used to monitor and regulate the relative humidity in pressure mixed gas cabin, pressure control system is used to monitor and regulate the total pressure in pressure mixed gas cabin, and carbonation unit is used to accommodate the concrete test piece to be carbonated.The method realizes the independent, accurate control and rapid stability of multiple parameters such as gas temperature, humidity, carbon dioxide concentration and total pressure under pressure condition.

This invention discloses a low-temperature preparation process for sugar-free mint-flavored soda water with high menthol retention rate, belonging to the field of food industry technology. The process includes the following steps: pre-cooling drinking water to 0-4°C to obtain cooling water; pre-cooling mint concentrate to 0-5°C to obtain cooled mint concentrate; adding the cooled mint concentrate to the cooling water under a nitrogen protective atmosphere and mixing; vacuum deoxygenating the mixture to reduce the dissolved oxygen concentration to below 1.5 mg / L; introducing carbon dioxide into the deoxygenated mixture for carbonation, controlling the temperature at 0-8°C; adding sodium bicarbonate and acesulfame potassium to obtain the mint-flavored soda water base; and performing nitrogen-displacement low-temperature filling at 0-8°C to obtain the finished product. This invention, through low-temperature operation throughout, nitrogen protection, and vacuum deoxygenation, effectively inhibits the volatilization and oxidative degradation of menthol, achieving a menthol retention rate of over 90% and significantly improving the product's shelf-life stability.

The beverage of the present invention contains lactic acid, citric acid, and carbon dioxide gas and has a degree of sweetness of 0-15, wherein the ratio (lactic acid content (g / L) / citric acid content (g / L)) between the content (g / L) of lactic acid and the content (g / L) of citric acid is 0.01-2 (provided that, beverages containing at least one of tea, coffee, and milk, and beer-taste beverages are excluded).

Provided are a roadbed material containing granulated carbonated steelmaking slag and raw material blocks having a carbon fixation ability, and a method for manufacturing the roadbed material, without granulating the carbonated steelmaking slag and the raw material blocks. In the roadbed material, the content of at least one of the carbonated steelmaking slag, a wooden material, a synthetic resin, and a natural fiber is 1 mass% or more and 90 mass% or less.

This invention discloses a high-performance concrete containing modified red brick powder and its preparation method, belonging to the field of building materials technology. The high-performance concrete is prepared from the following raw materials in parts by weight: 280-380 parts cement, 60-160 parts modified red brick powder, 1050-1250 parts coarse aggregate, 650-850 parts fine aggregate, 140-190 parts water, and 6-12 parts water-reducing agent. The modified red brick powder is obtained by pre-treating waste red bricks and then soaking, grinding, and drying them with a sodium silicate-alumina sulfate composite modifier. This invention utilizes the synergistic effect of sodium silicate-alumina sulfate composite modifier to increase the pozzolanic activity index of red brick powder to 90%-95%. The resulting concrete exhibits a 28-day compressive strength of over 56 MPa, a permeability grade of P10-P12, a freeze-thaw resistance grade of F250-F300, and excellent resistance to carbonation and chloride ion penetration. Even under low-temperature curing conditions of 10±2℃, the 42-day compressive strength still reaches 57.8 MPa. Simultaneously, it achieves the resource utilization of waste red bricks, reduces concrete production costs, and aligns with the trend of green building.

The application belongs to the technical field of industrial solid waste resource utilization and CO2 emission reduction, and provides a method for mineralizing and sealing carbon dioxide by using red mud and calcium source additives, wherein a solution containing red mud and calcium source additives is placed in a reaction device, and CO2 gas is introduced to carry out reaction; wherein the solid-liquid ratio of the red mud suspension is 20-200 g / L; the CO2 gas concentration is 10-100%; the reaction system pressure is 0.1-0.4 MPa; and the calcium source is one or more of CaSO4, Ca(OH)2 or CaCl2. The application breaks through the limitation of single factor regulation by multi-factor synergistic regulation, maximizes the carbon sequestration potential of red mud, accurately matches the calcium source to solve the problem of blindness in existing calcium source selection, and through calcium source supplement and reaction parameter optimization, inhibits the pH rebound after red mud carbonation, realizes long-term stable sealing of CO2, and overcomes the defect of poor carbon sequestration stability of the prior art.

This invention provides a method and mixing and grinding equipment for recovering lithium from lithium precipitate mother liquor, relating to the field of battery material preparation. The method for recovering lithium from lithium precipitate mother liquor includes the following steps: S1, mixing the lithium precipitate mother liquor with an acid solution, adjusting the pH to 6-7 to obtain a decarbonized solution; after evaporation, concentration, cooling, and crystallization, the decarbonized solution undergoes solid-liquid separation to obtain crude sodium sulfate and a lithium-containing filtrate; S2, adding sodium phosphate precipitant to the lithium-containing filtrate, and after the reaction is complete, solid-liquid separation yields crude lithium phosphate and a precipitate mother liquor. The method for recovering lithium from lithium precipitate mother liquor provided by this invention achieves full resource utilization of lithium, sodium, aluminum, and phosphorus and internal recycling of reagents through a coupled process of stepwise crystallization separation of sodium sulfate, lithium phosphate precipitation, sulfate roasting conversion, lithium carbonate preparation, aluminum phosphate alkali dissolution conversion, carbonation precipitation, and aluminum hydroxide sulfuric acid conversion. It also achieves the conversion and utilization of wastewater.