230 results about "High carbon dioxide" patented technology

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

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

The present invention provides a catalyst for carbon dioxide reduction with which the conversion of carbon dioxide can be heightened.　The catalyst for carbon dioxide reduction is for reducing carbon dioxide by subjecting the carbon dioxide and hydrogen to a hydrogenation reaction, and includes iron, gallium, and zinc as catalytic metals, the iron being a main component of the catalytic metals.

This invention proposes a charging control method, apparatus, device, and storage medium for a charging system. The method includes: determining a first power difference between a first charging power of a first charging pile and a first output power of a photosynthetic module; determining a first quantity based on the first power difference and the first output power, and determining a second quantity of available charging piles that are not yet activated; determining the operating state of a switching device between the first charging pile and multiple second charging piles according to the relationship between the first quantity and the second quantity, activating the first charging pile for charging, and activating the second charging piles for photosynthetic power generation. According to the technical solution of this invention, when the charging demand of one photosynthetic charging pile is greater than the power generation of one photosynthetic module, the photosynthetic modules of multiple idle photosynthetic charging piles can be coordinated to provide power, reducing the intervention of mains power, utilizing more photosynthetic power generation to absorb carbon dioxide, increasing the proportion of photosynthetic power generation, and improving carbon dioxide consumption efficiency.

This disclosure relates to systems and methods for removing CO2 from flue gas. The system includes a first heat exchanger for receiving and cooling the flue gas, a compressor for increasing the pressure of the cooled gas, a second heat exchanger to further cool the compressed gas, and a drying unit for removing water from the cooled compressed gas. The system further includes a pressure swing adsorption unit for adsorbing CO2 from the dried, cooled compressed gas using an adsorption media, the adsorption unit comprising a vacuum compressor for pulling the CO2 off the adsorption media. A compressor may be used for extracting the CO2 from the tank and boosting the pressure of the CO2 gas.

This invention discloses a rotary carbon dioxide capture device and method using a solid adsorbent. The technical solution is as follows: a flue and a carbon dioxide flow channel are vertically arranged on both sides of the rotary device shell; a drive device is located at the top of the rotary device shell, with its central axis coinciding with the central axis of the rotary device shell; a rotating cage is installed inside the rotary device shell; the drive device is connected to the rotating cage; the rotating cage is filled with adsorbent loading balls; a heater is installed in the inlet area of ​​the carbon dioxide flow channel located below the rotary device shell; and the outlet area of ​​the carbon dioxide flow channel located above the rotary device shell is connected to a compressor. The advantages are: this invention achieves continuous adsorption and desorption of carbon dioxide through the rotation of the rotary device, has a simple structure, low energy consumption, is suitable for large-scale carbon dioxide capture projects, effectively improves the efficiency of carbon dioxide capture, and reduces construction and operating costs.

To improve the activity and efficiency of converting carbon dioxide to methanol, a catalyst for converting carbon dioxide to methanol and a method for preparing methanol are provided. [Solution] The present invention relates to a catalyst for converting carbon dioxide to methanol and a method for preparing methanol. The catalyst for converting carbon dioxide to methanol is applied to methanol production and comprises 30 to 70 parts by weight of copper (Cu) or its oxide, 20 to 50 parts by weight of zinc (Zn) or its oxide, 2 to 10 parts by weight of aluminum (Al) or its oxide, and 0.1 to 10 parts by weight of a first modifier, wherein the first modifier is selected from the group consisting of indium (In) or its oxide and cerium (Ce) or its oxide. The catalyst for converting carbon dioxide to methanol of the present invention is suitable for methanol production. The present invention also relates to a method for preparing methanol.

The application discloses a kind of desulfurization wastewater's increase processing method of sink, for the problem of strong acidity of desulfurization wastewater, higher carbon dioxide partial pressure.Utilize sink increasing agent can realize wastewater sink, the percentage of weight of each component of sink increasing agent is as follows: calcium oxide 10-85%, apatite 10-85%, calcined dolomite 0.01-85%, limestone 0.01-85%, olivine 0.01-50%, sodium carbonate 0.01-10%, sodium bicarbonate 0.01-10%, potassium dihydrogen phosphate 1.00-40%, and the sum of weight ratio of above each component is 100%.By using the method of the application, the sink increasing agent is used to improve the alkalinity of desulfurization wastewater, significantly reduce the carbon dioxide partial pressure in wastewater, improve the absorption of carbon dioxide, realize the transformation of carbon source into carbon sink, and strictly control the weak alkaline of water body at the discharge end.The system can increase the absorption of carbon dioxide, realize the sink of desulfurization wastewater;The method can quickly dissolve the sink increasing agent, realize the quick sink effect;And the method can adjust the weak alkaline of water body at the discharge end, the weak alkaline of desulfurization wastewater with low pH after treatment can be directly discharged.

The present disclosure relates to improving the energy performance of CO2 capture. [Solution] A system for capturing carbon dioxide (CO2) from a CO2-containing gas stream, comprising an absorber for contacting the CO2-containing gas stream with an adsorbent, the adsorbent operable to capture CO2 from the CO2-containing gas stream in a first temperature range and release the CO2 in a second temperature range, a desorber for releasing the CO2 from the adsorbent, first and second heat pumps configured to recover heat for the desorber from both a condenser and at least one other point in the system, and the condenser temperature selected to maximize both the heat content of the condensate and the combined coefficient of performance of the first and second heat pumps to minimize the input energy requirements of the heat pump system.

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.

The object of the present invention is to provide a biogas treatment facility and a biogas treatment method that enable the removal of carbon dioxide contained in biogas generated by methane fermentation in a simple and low-cost manner. [Solution] To solve the above problems, we provide a biogas treatment facility and a biogas treatment method that include a gas-liquid contact section for bringing biogas discharged from a methane fermentation facility into contact with an aqueous solution containing alkaline earth metal ions, wherein a carbonate precipitation reaction proceeds in the gas-liquid contact section. [Effect] According to this invention, for biogas generated by methane fermentation and having a relatively high carbon dioxide content, carbon dioxide can be removed (recovered and fixed) from the biogas by a carbonate precipitation reaction that proceeds without the supply of external energy. This makes it possible to remove carbon dioxide contained in biogas simply and at low cost.

The application discloses a preparation method and application of a composite catalyst for preparing carbon dioxide-based polycarbonate polyols, and belongs to the technical field of catalysts. The composite catalyst is prepared by compounding a double metal cyanide catalyst and a zinc gallate catalyst in a certain proportion. In the presence of a chain transfer agent, the two kinds of catalysts produce a synergistic effect in a polymerization process: the double metal cyanide catalyst serves as a main active center, initiates and promotes chain growth; and the zinc gallate catalyst serves as a selective regulation center, promotes carbon dioxide insertion and inhibits side reactions, so that the catalysts have high activity and high selectivity. The polycarbonate polyols prepared by using the composite catalyst have high carbon dioxide insertion rates and low number average molecular weights. Moreover, the composite catalyst has simple preparation process, is wide in raw material and low in cost, and is suitable for industrialized scale preparation.

The application discloses a carbon dioxide separation device for separating carbon dioxide in a gas to be treated, which comprises a first compression-condensation mechanism, a separator, a first rectifying tower, a second rectifying tower, a second compression-condensation mechanism, a first heat exchanger, a first pressure-reducing valve and a first containing device, a discharge port of the first compression-condensation mechanism is communicated with a feed port of the separator, a liquid-phase discharge port of the separator is communicated with a feed port of the first pressure-reducing valve, a discharge port of the first pressure-reducing valve is communicated with a feed port of the first rectifying tower through the first heat exchanger, a gas-phase discharge port of the first rectifying tower is communicated with a feed port of the second compression-condensation mechanism, a discharge port of the second compression-condensation mechanism is communicated with the feed port of the first rectifying tower through a first branch, and a liquid-phase discharge port of the second rectifying tower is communicated with the first containing device. The above scheme can solve the problem of resource waste caused by directly discharging the gas with a high carbon dioxide concentration in the related art.

This invention relates to the field of mining environmental protection equipment technology, and more particularly to a separable mining carbon neutralization device. The separable mining carbon neutralization device provided by this invention solves the technical problem of poor operational stability in existing mining carbon neutralization devices. The separable mining carbon neutralization device includes a pre-stage component for separating carbon dioxide from gas, a post-stage component for adsorbing the carbon dioxide separated by the pre-stage component, and a gas pump. By setting a separation membrane to separate carbon dioxide from the gas, the gas entering the post-stage component has a higher carbon dioxide content and lower impurity content, which facilitates rapid adsorption of carbon dioxide by the adsorbent, thereby improving the stability of the mining carbon neutralization device during operation and increasing the gas treatment efficiency.

The invention discloses a polyamine carbon dot as well as a preparation method and application thereof in improvement of corn resistance, and belongs to the technical field of nano agricultural regulation and control. The polyamine carbon dots are subjected to hydrothermal synthesis, the size of the PEICDs is 2.3 nm, the quantum yield of the carbon dots can be increased, carbon dioxide in the atmosphere can be captured and converted into bicarbonate radicals, and it is verified through in-vitro experiments that the PEICDs can improve the carbon dioxide conversion product 3-phosphoglycerate in vitro; under the stress of drought and salt, the polyethyleneimine functionalized carbon dot solution is applied to the leaf surfaces of the crops, so that the growth and development of the crops can be improved by remarkably improving the net photosynthetic rate and the intercellular carbon dioxide concentration, and the adaptability of the crops to the environment is further improved.

This enhances the carbon dioxide absorption efficiency even when the gas supplied to the carbon dioxide capture device is at a low temperature. [Solution] The carbon dioxide recovery device comprises a gas introduction line into which gas containing carbon dioxide is supplied from the outside; a scrubbing tower that cleans the gas by bringing the gas supplied to the gas introduction line into contact with a cleaning solution; an absorption tower into which an absorbent liquid capable of absorbing carbon dioxide in the gas is introduced and absorbs the carbon dioxide in the gas that has passed through the gas scrubbing tower; a regeneration tower that heats the absorbent liquid that has absorbed carbon dioxide, separates the carbon dioxide from the absorbent liquid, and regenerates the absorbent liquid; and a heating unit that heats the gas supplied to the absorption tower.

The invention discloses a double-gas-group intelligent fire extinguishing device, and belongs to the technical field of fire fighting equipment. Comprising a liquid nitrogen storage tank, a liquid nitrogen outlet pipe, a first deflation valve, a liquid nitrogen gasification device, a second deflation valve, a nitrogen remote control valve group, a third deflation valve, a nitrogen manual control valve, a pipeline, an inductor, an application area, a high-pressure mixer, a carbon dioxide manual control valve, a fourth deflation valve, a carbon dioxide remote control valve group, a fifth deflation valve and a liquid carbon dioxide gasification device. And a sixth deflation valve, a liquid carbon dioxide outlet pipe and a liquid carbon dioxide storage tank. According to the double-gas-group intelligent fire extinguishing device, low-cost carbon dioxide and nitrogen are combined, the range of the carbon dioxide is further increased, the emergency reaction time is shortened, the raw material cost is low, and wide application and popularization are facilitated.

The invention relates to a carbon dioxide photo-thermal catalytic conversion catalyst and a preparation method and application thereof, and the preparation method comprises the following steps: mixing a titanium source, an alkali metal halide, a copper source and a manganese source, and calcining in an inert atmosphere to obtain the carbon dioxide photo-thermal catalytic conversion catalyst. The copper source and the manganese source are jointly loaded on the titanium-based carrier, the synergistic effect of the copper source and the manganese source is achieved, and the photo-thermal catalytic conversion effect of carbon dioxide is improved. According to the invention, the titanium source, the copper source and the manganese source can be uniformly mixed in a calcining state by exerting the solvent medium effect of the alkali metal halide without assistance of a solvent for assisting dissolution. The preparation method is simple in process, raw materials are easy to obtain, and the prepared catalyst is simple in composition, high in methane selectivity, good in economic benefit and easy to popularize and use on a large scale when being used for the photo-thermal catalytic conversion process of carbon dioxide.

The application discloses a kind of anion-cation surfactant, foam system and its preparation method and its application in the field of enhanced oil recovery.The anion-cation surfactant includes at least one of the cationic surfactant containing the structure shown in the following formula (1) and at least one of the anionic surfactant containing the structure shown in the following formula (2):R2-R3-SO3 ‑ 1 / qM q+ Formula (2).The application finds that the amine group or ammonium group siloxane with specific structure and anion surfactant form anion-cation foam system, improve the carbon dioxide affinity of foam agent, can realize more balanced hydrophilic carbon dioxide affinity, improve the stability of carbon dioxide foam or emulsion.

The invention relates to the technical field of building blocks, and discloses a manufacturing method of a concrete carbon sequestration brick, which comprises the following steps: S1, raw material treatment; s2, preparing concrete; s3, compression molding is carried out; concrete is pressed into concrete solid bricks; step S4: pre-curing; the concrete solid bricks are pre-cured, and the residual water-solid ratio of the concrete solid bricks is controlled; S5, carbonization curing is conducted; putting the concrete solid bricks with a certain residual water-solid ratio into a curing kettle for sealed curing, and injecting high-pressure carbon dioxide gas into the curing kettle to form carbonization pressure; and S6, natural curing. The concrete is prepared by stirring the raw materials according to a reasonable water-solid ratio, and the concrete brick is subjected to carbonization curing according to a reasonable residual water-solid ratio, carbon dioxide carbonization pressure and curing time, so that the carbon sequestration efficiency and the carbon sequestration amount of the concrete brick can be effectively improved, and the compressive strength of the concrete brick can be improved while the utilization efficiency of carbon dioxide is improved; the quality of the concrete brick is improved.

The invention relates to the technical field of carbon dioxide concentration monitoring, and discloses a carbon dioxide concentration monitoring device for a blast furnace gas diffusion port, which comprises a combustor. When blast furnace gas enters the burner, one part of the blast furnace gas enters the guide assembly, and the part of the blast furnace gas enters the detection assembly through the guide assembly to detect the content of carbon dioxide in the blast furnace gas; the blast furnace gas entering the detection assemblies through the guide assemblies can be discharged from the top ends of the guide assemblies again, so that the detection assemblies can detect the carbon dioxide content of the diffused blast furnace gas in real time, and due to the fact that the detection assemblies and the guide assemblies are arranged, different positions of the blast furnace gas can be conveniently detected; therefore, the real-time carbon dioxide content can be obtained by taking the average value of the detection results, so that deviation of the detection results can be avoided, and the accuracy of carbon dioxide concentration detection is improved.

The invention discloses a composite catalyst as well as a preparation method and application thereof. The composite catalyst comprises carbon nitride, cobalt sulfide and phosphorus. The composite catalyst provided by the invention utilizes the synergistic effect between carbon nitride and cobalt sulfide to regulate the electron and chemical structure of an active center and promote the generation and migration of photo-generated charges at the same time. The surface of the catalyst is modified by phosphorus, so that adsorption and activation of reactants CO2 and H2O molecules can be further promoted. According to the preparation method of the composite catalyst, the synthesis strategy is regulated and controlled, the cobalt sulfide is uniformly dispersed on the carrier, and the reduction activity and stability of carbon dioxide are improved. The catalyst is low in price, the preparation process is simple, the repeatability is good, and large-scale production is easy to carry out.

The application provides an iron tailing solidification treatment method, and belongs to the technical field of tailing solidification. The iron tailing solidification treatment method comprises the following steps: uniformly mixing iron tailings, desulfurization ash and water to obtain a mixture; and pressing and forming the mixture, and controlling the process parameters of the pressing and forming to obtain a solidified body. After the iron tailings are solidified, the application produces a stackable and environment-friendly solidified body, and the iron tailings can be quickly and massively solidified and resourcefully utilized. A special tailing reservoir is not needed, and the desulfurization ash with extremely low use cost is used as a solidifying agent, thereby further reducing the solidification cost and being beneficial to the solidification of large-volume tailings. The solidified body obtained by the application can be applied to various strength safety reclamation, and the problems of high cost and high carbon dioxide emission of traditional cement used as a solidifying agent are avoided. Therefore, the technical problems of high cost, low efficiency and low solidification strength existing in the current existing iron tailing solidification treatment are solved.

This invention relates to a smart stratified injection-production string for carbon dioxide injection, comprising a first tubing and a second tubing connected by a backwash valve or a release tool. A hydraulic feedback pump is installed on the first tubing, and several packers are installed at intervals on the second tubing. A smart control switch tool is installed between two adjacent packers, each corresponding to an oil layer. An anchoring tool is also installed on the second tubing. This invention enables stratified injection, well shut-in, well release, and stratified production of carbon dioxide in any one or more layers without moving the injection-production string. This effectively improves the effective utilization rate of carbon dioxide, the degree of oil layer utilization, and the injection-production conversion efficiency, thereby increasing injection-production efficiency and oil recovery rate, reducing well workover work, well occupation time, and well cleaning and well layer contamination, and lowering operating costs.

The present application relates to the technical field of enhanced oil recovery, in particular to a carbon dioxide viscosity-increasing regulator, an oil displacement agent, application thereof, a method for increasing carbon dioxide viscosity and a carbon dioxide-in-oil dispersion system. The carbon dioxide viscosity-increasing regulator comprises at least one compound represented by formula (I); (R1) a (DO j PO k EO h ) b [X1(C=OR2) c (C=O) d (X2) e R3] f Formula (I). The carbon dioxide viscosity-increasing regulator reduces the interfacial tension between crude oil and carbon dioxide, and the oil displacement agent formed by carbon dioxide is applied to crude oil exploitation, which is conducive to the dispersion of carbon dioxide in crude oil to form a carbon dioxide-in-oil dispersion system. The viscosity of carbon dioxide in the carbon dioxide-in-oil dispersion system is 1-2000 times the viscosity of carbon dioxide under the same temperature and pressure conditions.

This invention discloses a method for constructing a natural deaerated river channel for travertine conservation, relating to the field of river channel construction technology. The method includes the following steps: S1, determining the water quality at the river's starting and ending points, and determining the target SIc index improvement based on water quality parameters; S2, conducting river topographic measurements, designing the river's direction and slope, ensuring the slope is no greater than 10°; S3, dividing the river into a rapid deaeration section (thin-layer flow section) and a normal deaeration section (thick-layer flow section) based on water quality parameters and design targets. This invention utilizes existing natural topographic conditions, controlling the river's slope, width, bed conditions, and micro-landforms such as waterfalls, to construct, renovate, or expand the river channel, forming a natural river with high carbon dioxide deaeration capacity within a given length. At the river outlet, a landscape water body with macroscopic travertine deposition capacity (SIc > 1) is formed. After the water body enters the conservation area in a dispersed flow, it can form a blue-green colored pool.

The utility model discloses a flue gas carbon dioxide trapping system which comprises a vertically arranged absorption tower, a flue gas inlet pipe arranged on one side of the lower part of the absorption tower, and a flue gas outlet pipe upwards arranged at the upper end of the absorption tower, and is characterized in that an alcohol amine solution return port is also arranged on one side of the upper part of the absorption tower; a downward spray head device is further arranged at the upper end of the inner cavity of the absorption tower, the spray head device is connected with an alcohol amine solution return port, a vertically-through porous filler is arranged between the gas distribution device and the spray head device, and an alcohol amine solution outlet is further formed in the lower end of the absorption tower outwards; and an alcohol amine solution regeneration device is connected between the alcohol amine solution outlet and the alcohol amine solution return port through a liquid pipeline to form a regeneration circulation system. The device can be directly driven by solar energy to realize regeneration and cyclic utilization of an adsorption solvent, and has the advantages of simple structure, convenience in operation, high carbon dioxide removal efficiency, sustainability in carbon dioxide absorption treatment and the like.

The present application belongs to the technical field of gas separation, and discloses a device for separating ammonia and carbon dioxide and a working method thereof. The device comprises a shell and a plurality of absorption units installed inside the shell. The absorption units are provided with absorption carriers. The spray nozzles of a water spraying system at the top of the device are provided with drainage needles to form water films on the surface of the pores of the carriers. The absorption units are connected by gas guide hoses and liquid communication hoses to realize the upward transmission of gas and the downward flow of ammonia water. A fan is installed at the top of the shell, and a spraying system is installed at the bottom of the shell. The mixed gas is absorbed by the plurality of absorption units in stages. The ammonia is absorbed by the water films to form ammonia water, and the carbon dioxide is purified step by step and then discharged. The present application realizes the efficient separation of ammonia and carbon dioxide, has high carbon dioxide purity, low energy consumption and stable operation.

The invention relates to the technical field of oilfield development, and discloses a method for improving carbon dioxide oil displacement effect, which comprises the following steps: (1) injecting a first composition into an oil reservoir, and then injecting carbon dioxide; wherein the first composition comprises xanthan gum, silicate and an optional first solvent; (2) injecting a second composition into the oil reservoir, and then injecting carbon dioxide; wherein the second composition comprises fatty alcohol polyoxyethylene ether sulfate, alkyl hydroxypropyl phosphate betaine, alkyl glycoside, coconut oil diethanolamide and an optional second solvent. By means of the method, the problem that the oil extraction rate is reduced due to gas channeling in an oil field can be effectively solved. According to the method, the fluidity of carbon dioxide gas in a reservoir high-permeability area or a crack can be effectively reduced, and the gas flooding sweep range is expanded, so that the carbon dioxide oil flooding effect is improved.

The utility model belongs to the technical field of vortex tubes, and provides a CCUS ultra-supercritical carbon dioxide liquid cooling energy storage geothermal power generation double-vortex self-heating device which comprises a first vortex assembly, the first vortex assembly is welded through an airtight buckle and provided with a second vortex assembly, and Laval nozzles are welded to the first vortex assembly and the second vortex assembly in an airtight buckle mode. The carbon dioxide temperature of the CCUS liquid cooling energy storage geothermal power generation wellhead is increased, the expansion volume of the carbon dioxide is increased, the efficiency of a turbine generator is improved, the installed capacity of a turbine is increased, the energy consumption of the turbine is reduced, and heat energy is provided for clean heating of cities.