617 results about "Carbonation" patented technology

Provided herein are methods and compositions for determining and reporting carbon dioxide sequestered and / or carbon dioxide avoided in operations involving concrete, including concrete raw material transport, concrete production, and concrete use.

The invention relates to the technical field of solid waste treatment, in particular to a flotation method and system for waste incineration fly ash decontamination and calcium conservation. The method comprises the steps that waste incineration fly ash is placed in a natural environment to be subjected to a natural carbonation reaction till the pH value is 7-9, pretreated fly ash is obtained and mixed with water, and then a collecting agent and a foaming agent are added for flotation separation; or mixing the waste fly ash by using the sulfuric acid aqueous solution as the flotation liquid, and then adding the collecting agent and the foaming agent for flotation separation; wherein the collecting agent is one or more of butyl xanthate, ammonium dibutyl dithiophosphate and N, N-diethyldithiocarbamate. By means of the method, heavy metal and chlorine salt in the fly ash can be removed, Ca-based components in the fly ash can be reserved, and therefore resource utilization of the waste incineration fly ash is achieved to the maximum extent.

A carbonation device (100) for carbonating a beverage in a container (200), the carbonation device (100) comprising:a head portion (114b) for sealably receiving a mouth portion (220) of the container (200), the head portion (114b) having an infuser (120) that is operable to inject carbon dioxide into the container (200) via the mouth (220) of the container (200); andan engagement feature (173) with which the container (200) can be configured to securably locate the container (200) with respect to the head portion (114b) in:an injection configuration in which the mouth portion (220) of the container (200) is substantially sealed with respect to the infuser (120) so that the infuser (120) can inject carbon dioxide into the container (200) to carbonate the beverage in the container; anda depressurisation configuration in which the mouth portion (220) of the container (200) is partially unsealed with respect to the infuser (120) to allow for depressurization of the container (200).

The invention provides a preparation method for improving the performance and carbon sequestration rate of a steel slag carbonized product, and the preparation method specifically comprises the following steps: (1) weighing the following raw materials in percentage by mass: 50-100 parts of steel slag powder, 13-17 parts of deionized water and 1 part of alcohol amine; (2) mixing the weighed deionized water with alcohol amine to obtain an alcohol amine solution, stirring the alcohol amine solution in a magnetic stirrer, continuously introducing CO2 gas with the concentration of 99.9% to carbonate the alcohol amine solution, and controlling the gas introduction time to be 2 hours; (3) doping an alkylol amine solution subjected to carbonation treatment into the weighed steel slag powder, and uniformly stirring by using a neat paste stirrer; (4) pressing the steel slag mixture into steel slag product briquettes in a compression molding manner; and (5) putting the briquette into a carbonization kettle, and introducing CO2 gas with the purity of 99.9% to prepare a steel slag carbonized product. The problem that the interior of the steel slag carbonized product cannot be fully carbonated and maintained is solved, so that the comprehensive performance and the carbon sequestration rate of the steel slag carbonized product are remarkably improved.

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

The present invention relates to a process for the carbonation of old concrete or old concrete products as starting product, wherein the starting product is crushed in a first step and moistened in a second step and exposed to a carbon dioxide-containing gas, characterized in that the second step is carried out in a mixer 20 a mechanical fluidized bed with a tool Froude number between 3 and 11.

To provide a method which enables inexpensive production with a high yield of lithium hydroxide with a low amount of impurities such as sodium from lithium-containing water including a lithium ion and a chloride ion.SOLUTION: A production method of lithium hydroxide includes: a crystallizing step of crystallizing lithium hydroxide (LiOH) from lithium-containing water including a lithium ion and a chloride ion; a solid-liquid separation step of performing solid-liquid separation treatment of concentrated liquid including the LiOH to obtain the LiOH as a solid product and filtrate; a carbonation step of producing lithium carbonate from the filtrate by carbonation; a lithium carbonate recovery step of evaporating at least a part of ammonia from a mixed liquid obtained in the carbonation step and performing solid-liquid separation treatment of the resultant treated liquid to obtain lithium carbonate as a solid product; a lithium hydroxide production step of converting the obtained lithium carbonate into LiOH followed by solid-liquid separation treatment to obtain an aqueous LiOH solution (1) as a liquid component; and a recrystallizing step of crystallizing LiOH from the aqueous solution (1).SELECTED DRAWING: Figure 2

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.

Plant for electrically producing sodium carbonate or bicarbonate Plant for electrically producing sodium carbonate (Na2CO3) comprising: (A) an electrodialyzer cellstack to electrodialyze a sodium chloride (NaCl) aqueous solution into a sodium hydroxide (NaOH) solution and into a hydrochloric acid (HCl) solution, wherein the electrodialyzer cellstack is operated in at least 2 production rates on a given time period; (B) carbonating mean(s) to partially or totally carbonate the NaOH solution with CO2 into a Na2CO3 solution; (C) storage mean(s) of the NaOH solution or of the Na2CO3 solution; (D) a crystallizer equipment to concentrate Na2CO3 solution and to produce Na2CO3 crystals and a mother liquor; and wherein the storage means of the NaOH solution, or of the Na2CO3 solution, is of a volume sufficient to operate the crystallizer equipment in a constant production rate in the said time period.

The invention discloses a carbonizer and a bubble water device, and relates to the technical field of overflowing carbonation bubble water preparation.The carbonizer comprises a gas mixing box body, a gas inlet pipe, a liquid inlet pipe and a liquid outlet pipe, a containing cavity is formed in the gas mixing box body, and a plurality of partition plates are arranged in the containing cavity at intervals; the partition plates divide the accommodating cavity into an inlet chamber, a throat pipe channel and a turbulent flow channel which are communicated in sequence; the air inlet pipe and the liquid inlet pipe are communicated with the turbulent flow channel inlet chamber; the liquid inlet pipe is connected to the rear end of the turbulent flow channel; the sectional area of the throat pipe channel is smaller than that of the inlet chamber and that of the turbulent flow channel; the turbulent flow channel extends from the side close to the throat pipe channel to the side away from the throat pipe channel, and a plurality of turbulent flow units are arranged in the turbulent flow channel and are arranged at intervals in the extending direction of the turbulent flow channel. The technical scheme provided by the invention is used for improving the carbonization concentration of the sparkling water, so that the taste of the sparkling water is improved.

In various embodiments disclosed herein, a carbonated beverage carafe includes a main body, a base, and a cap. The main body may be any shape desired by the user, but is typically cylindrical. The cap is threaded on to the main body to seal the main body. The device includes a mating mechanism that allows the carafe to be installed in an external carbonation device. In various embodiments, the cap includes a push button device that unseals the carafe to allow liquid to be poured out of the carafe.

Provided herein are methods and compositions for carbonation of recycled concrete aggregates (RCA) to produce carbonated RCA. In addition, uses of the carbonated RCA, such as in building materials, and building materials containing RCA, are included. Carbonation of RCA may be used alone or may be used in combination with other carbonation processes associated with concrete manufacture, such as carbonation of wet concrete mixes and / or carbonation of concrete wash water.

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 discloses a processing technology of a quinoa seedling bud green juice bubble functional beverage, and belongs to the technical field of beverage processing. Comprising the steps of raw material pretreatment, crushing and juicing, filtration treatment, enzyme deactivation treatment, blending, sterilization treatment and carbonation treatment. In the filtering process, a product obtained after juicing is filtered through a 200-400-mesh filter screen and then filtered through a filter material; the filter material comprises modified PVDF (polyvinylidene fluoride), modified chitosan, modified MOFs (metal organic frameworks) and modified titanium dioxide. The modified MOFs are obtained by acetylating MOFs and then modifying the MOFs with a silane coupling agent; the modified PVDF is obtained by sequentially grafting sulfobetaine metacrylic acid ester, polyethylene glycol metacrylic acid ester and alkyl acrylate on PVDF; the modified chitosan is obtained by sequentially grafting PEG-acrylic acid and methyl methacrylate to chitosan; the modified titanium dioxide is obtained by modifying titanium dioxide through a silane coupling agent. The chenopodium quinoa seedling buds are made into the bubble functional beverage, so that the beverage is endowed with good taste; the filter material can reduce loss of protein and polyphenol and effectively retain nutritional ingredients.

This method for producing a cement hardened body includes: a molding step for molding a molded body from a molding feedstock containing water and a fine powder of cement hydrate; and a carbonation step for carbonating a calcium-containing component contained in the fine powder of cement hydrate in an atmosphere that contains carbon dioxide, has a partial pressure of carbon dioxide of 3.0 MPa or less, and has a temperature of 80°C or less. The molded body for carbon dioxide fixation contains water and a fine powder of cement hydrate, and the particle diameter of the fine powder of the cement hydrate is 500 μm or less. The cement hardened body contains calcium carbonate, has a carbonation degree of 50% or more, and has a compressive strength of 17 N / mm 2 or more.

A drink station is provided with an alkaline filter cartridge in fluid communication with an ambient temperature water line provide alkaline water, and with a chilled water mixed with the alkaline water at a spigot to provide chilled alkaline water. A hot water heating element is located below the spigot so hot water flows upward for dispensing from the spigot, with a vent line between the heating element and spigot helping hot water to flow from the spigot to the heating element. A refrigeration system and a carbonation system is also provided. The refrigeration system uses the ice-bank technology. A submersible agitator pump improves heat exchanged between ice-bank and water by forced convection. The agitator pump operating based on the temperature of the drinking water. A figure eight evaporator coil can provide two cylindrical ice banks and two chilled water coils to increase the chilled water capacity.

The present invention relates to the technical field of supersulfate cement, and specifically discloses a calcium fluoroaluminate-modified high-stability supersulfate cement and its application. The raw materials of the supersulfate cement include the following components: 70-80 parts by weight of mineral powder, 10-15 parts by weight of gypsum, 5-10 parts by weight of calcium fluoroaluminate, and 1-2 parts by weight of modified diatomaceous earth. The modified diatomaceous earth is porous diatomaceous earth microspheres loaded with L-aspartic acid. The present invention utilizes the synergistic effect of the calcium fluoroaluminate and the modified diatomaceous earth to not only improve the early strength of the supersulfate cement, but also effectively improve the chemical stability of the hydration product ettringite (AFt), thereby improving the carbonation resistance of the supersulfate cement and alleviating the problem of long-term strength shrinkage.

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.

A method for producing carbon negative supplementary cementitious materials utilizing a carbon mineralization-based direct air capture process. One version of the method comprises pre-treating a mineral feedstock with an alkaline solution, resulting in a pre-treated feedstock and an alkaline solution comprising dissolved alumina or silica. The pre-treated feedstock has enhanced carbonation reactivity in the subsequent carbon mineralization-based direct air capture process. Another version of the method comprises post-treating precipitates yielded from carbon mineralization-based direct air capture process of a mineral feedstock with an alkaline solution, resulting in a residue and an alkaline solution comprising dissolved alumina or silica. The alkaline solutions resulted from the pre- and post-treatments can be directly used as supplementary cementitious materials, or as a sorbent solution for carbon capture.

The present invention relates to a method for treating wastewater (EL) and / or residual sludge (ES) from an oxidation tank in an installation (10) for nitriding in a molten salt tank having a nitriding tank (11), an oxidation tank (12) and a stop tank (13). The treatment method includes a decarbonation method A for recovering oxidizing salts and a carbonation method B for recovering carbonate salts.

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.

An electrocoagulation (EC) reactor and method for simultaneous CO2 capture and brine desalination. The EC reactor includes a reaction chamber that holds brine solution with contaminants, an inlet tube for CO2 gas mixture supply, and a plurality of electrodes (130), submerged in the brine. The electrodes are connected to a power source, applying a voltage to induce electrochemical reactions that precipitate dissolved salts and heavy metals, reducing brine salinity and contaminants, while capturing CO2 in the form of carbonates to form solid coagulants. The method involves introducing brine into the EC reactor's reaction chamber, adding calcium oxide (CaO) and ammonium bicarbonate (NH4HCO3) to create a homogeneous solution, and applying electric current to dissolve the electrodes, producing solid coagulants. A CO2 gas mixture is introduced to facilitate carbonation reactions, forming precipitates like calcium carbonate (CaCO3) and magnesium carbonate (MgCO3), which are filtered to obtain desalinated brine.

Plant for electrically producing sodium carbonate (Na2CO3) comprising: (A) a set of at least two electrodialyzer cellstacks to electrodialyze a sodium chloride (NaCl) solution into a sodium hydroxide (NaOH) solution and into a hydrochloric acid (HCI), wherein the electrodialyzer cellstack set is operated in at least 2 production rates on a given time period; (B) carbonating mean(s) to partially or totally carbonate the NaOH solution with CO2 into Na2CO3 solution; (C) storage mean(s) of the NaOH solution or of the Na2CO3 solution; (D) a crystallizer equipment to concentrate the Na2CO3 solution and to produce sodium carbonate Na2CO3 crystals and a mother liquor; (E) separation mean(s) to separate the Na2CO3 crystals from their mother liquor and recovering the Na2CO3 crystals; and wherein the storage means of the NaOH solution, or of the Na2CO3 solution, is of a volume sufficient to operate the crystallizer equipment in a constant production rate in the said time period.

The utility model discloses a carbonization detection box for concrete durability detection, which comprises a detection box main body, and a carbonization mechanism is mounted in the detection box main body; the detection box main body comprises a box body; the carbonization mechanism comprises a carbonization box located in an inner cavity of the box body, one end of the carbonization box is in threaded connection with a sealing cover, the surface of the carbonization box is communicated with a first electromagnetic valve and a second electromagnetic valve, the gas inlet end of the second electromagnetic valve is communicated with a manual flow regulating valve, and the gas inlet end of the manual flow regulating valve is communicated with a carbon dioxide gas cylinder. A carbon dioxide sensor is fixedly mounted on the surface of the carbonization box. The carbonation detection box has the advantage of controlling the concentration of carbon dioxide, and solves the problems that the concentration of carbon dioxide in the carbonation detection box is inconvenient to control and the durability change of a concrete test piece under different concentrations of carbon dioxide is difficult to reflect in the use process of the existing carbonation detection box for concrete durability detection.

This application relates to the technical field of comprehensive utilization of fly ash, and specifically discloses a method for extracting alumina from solid waste fly ash. The extraction of the alumina successively undergoes raw material calcination and digestion, desilication treatment of the digested slurry, refining and crystallization of the mother liquor, and roasting and decomposition; among them, the desilication treatment of the digested slurry includes the following steps: adding a desilication agent to the digested slurry, heating for treatment, and filtering to obtain the carbonation mother liquor; the desilication agent is prepared by mixing raw materials in the following mass parts: 65-75 parts of deionized water, 30-40 parts of active desilication powder, 0.5-0.8 parts of dispersant, and 0.2-0.3 parts of stabilizer, and the active desilication powder is obtained by intercalating and compounding modified nano-sodalite and modified kaolin; by using the desilication agent of this application to treat the fly ash mixed raw meal, the removal rate of silicon dioxide in the digested slurry can reach ≥90.37%, and the purity of alumina in the product can reach more than 97.7%.

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 discloses a magnesium-based cementitious material and a preparation method thereof, and relates to the field of magnesium-based cementitious materials, and the magnesium-based cementitious material is prepared from the following components: 80-120 parts of magnesium oxide cement, 0.1-0.6 part of a hydrating agent, 0.6-1.2 parts of a carbonation auxiliary agent, 120-180 parts of aggregate, and 50-60 parts of water. The carbonation auxiliary agent comprises one or more of sodium bicarbonate, sesquicarbonate dihydrate and hydromagnesite seeds. The hydrating agent and the carbonating agent cooperate to form a continuous network structure of hydrated magnesium carbonate in the magnesium-based cementing material to fill gaps, and the density and compressive strength of the magnesium-based cementing material are improved while carbon sequestration is performed.

Methods of the present disclosure relate to tailoring cement compositions to withstand carbon dioxide injection. A method comprises predicting a depth of carbonation in a cement sheath; predicting spatially varying mechanical properties of the cement composition due to the carbonation; and determining a mechanical response of the cement sheath based on the spatially varying mechanical properties of the cement composition.

A hole transport material comprising an organic compound, wherein the organic compound is represented by the general formula (G1), where R 1 to R 8 independently represent hydrogen, a hydrocarbon group with 1 to 6 carbon atoms, a cyclic hydrocarbon group with 3 to 6 carbon atoms, an alkoxy group with 1 to 6 carbon atoms, a cyano group, halogen, a haloalkyl group with 1 to 6 carbon atoms, or a substituted or unsubstituted aromatic hydrocarbon group with 6 to 60 carbon atoms. where R 2 no amino group; where one of A and B represents a group represented by the general formula (g1), and the other represents hydrogen, a cyclic hydrocarbon group with 3 to 6 carbon atoms, an alkoxy group with 1 to 6 carbon atoms, a cyano group, halogen, a haloalkyl group with 1 to 6 carbon atoms, a hydrocarbon group with 1 to 6 carbon atoms, or a substituted or unsubstituted aromatic hydrocarbon group with 6 to 60 carbon atoms, where Ar 1 and Ar 2 independently represent a substituted or unsubstituted aromatic hydrocarbon group with 6 to 60 carbon atoms or a group represented by the general formula (g2), where Ar 1 and Ar 2 do not contain a dibenzothiophene skeleton where R 11 to R 18independently represent hydrogen, a hydrocarbon group with 1 to 6 carbon atoms, a cyclic hydrocarbon group with 3 to 6 carbon atoms, an alkoxy group with 1 to 6 carbon atoms, a cyano group, halogen, a haloalkyl group with 1 to 6 carbon atoms, or a substituted or unsubstituted aromatic hydrocarbon group with 6 to 60 carbon atoms, and where one of Z 1 and Z 2 bonded to a nitrogen atom in the general formula (g1) and the other being hydrogen, a cyclic hydrocarbon group with 3 to 6 carbon atoms, an alkoxy group with 1 to 6 carbon atoms, a cyano group, halogen, a haloalkyl group with 1 to 6 carbon atoms, a hydrocarbon group with 1 to 6 carbon atoms or a substituted or unsubstituted aromatic hydrocarbon group with 6 to 60 carbon atoms.