26 results about "Adsorption reaction" patented technology

This invention discloses a resource recovery system for dredged sediment treatment based on ultrasonic extraction and flotation synergy, comprising: a pretreatment unit, a first-stage ultrasonic extraction reaction unit, a second-stage solid-phase adsorption reaction unit, a third-stage flotation separation unit, a dewatering unit, a residual water treatment unit, and a nitrogen and phosphorus recovery unit. It also discloses a resource recovery method for dredged sediment treatment based on ultrasonic extraction and flotation synergy. This invention solves the problems of low pollutant removal rate, high risk of secondary pollution of dredged soil, and limited resource recovery in traditional dredged sediment treatment. Through the synergistic effect of multiple units including "ultrasonic-liquid-solid-phase adsorption-micro-nano bubble flotation," it achieves efficient release of nitrogen and phosphorus, simultaneous removal of microplastics, rapid separation of clean sediment from polluted phases, and recovery of nitrogen and phosphorus for fertilizer production and resource recovery of clean sediment. The entire process is green and low-consumption, suitable for compact layout on water or near shore, and can simultaneously meet the requirements of sediment reduction, harmlessness, and resource recovery.

An apparatus includes a filter body, which filters an exhaust gas and feeds it to an adsorption reaction device and is disposed below the adsorption reaction device; and a housing which provides an internal space for storing powder separated from the filter body and is installed below the adsorption reaction device, which housing includes a filter installation unit, which is a space projected below the adsorption reaction device and which provides a filter installation space internally for installing the filter body and an expansion unit that protrudes sideways from the filter installation unit and provides an expansion space which communicates internally with the filter installation space, and the internal space is expanded by the expansion space to increase the powder collection capacity. A suction port for sucking in the exhaust gas is installed in the expansion unit.

The application discloses a tail gas treatment system and method for a gas phase deposition device, and belongs to the technical field of CVD / PVD tail gas treatment. The system comprises a thermal decomposition furnace, at least one conical dust removal cooler, a vacuum pump set and an adsorption reaction tank; the conical dust removal cooler comprises a conical tank body, a cooling water jacket, an exhaust pipe, a shaft sleeve rotatably sleeved outside the exhaust pipe, a spiral scraper assembly coaxially fixed on the shaft sleeve and a driving mechanism; a gap is arranged between the outer edge of the spiral scraper assembly and the inner wall of the conical tank body, and the shaft sleeve and the spiral scraper assembly are driven to rotate at a low speed by the driving mechanism, so that the inner wall deposits are continuously scraped off. The application integrates vacuum air extraction, thermal decomposition, spiral scraping type cooling and dust removal and deep adsorption purification into one, realizes active removal of wall deposits, and solves the problems of efficiency reduction, pipeline blockage and equipment corrosion of the tail gas treatment system in the prior art due to wall deposits.

The application provides a preparation method of a high-spin-state cobalt monatomic catalyst and application of the high-spin-state cobalt monatomic catalyst in neutral electro-synthesis of hydrogen peroxide, and belongs to the technical field of electro-catalytic synthesis. A conductive carbon material dispersion liquid is mixed with a binuclear sulfonated cobalt phthalocyanine dispersion liquid, an adsorption reaction is carried out under magnetic stirring, and the obtained mixed liquid is subjected to suction filtration, washing and drying to obtain the high-spin-state cobalt monatomic catalyst, which has the advantages of simple steps and high repeatability. In the application, the binuclear sulfonated cobalt phthalocyanine is loaded on the conductive carbon material to realize construction of a high-spin-state cobalt center, so as to promote activation of O2 and improve reaction kinetics, and the application has excellent catalytic activity, hydrogen peroxide selectivity and stability in the neutral electro-synthesis of hydrogen peroxide. The application can also be used for synthesizing pure hydrogen peroxide solution with a concentration reaching the medical-grade disinfectant water standard, and the voltage of a reaction cell is lower than 2.2 V, so the application has great application potential of low energy consumption and direct synthesis.

Solid adsorbents based on amidine-containing aliphatic amine polymers with resistance to oxidative damage in air and water at elevated temperatures compared to the prior art is disclosed. The solid adsorbent exhibits a high porosity and reactivity for the adsorption of carbon dioxide (CO2) from ambient air and does not require a porous substrate material such as porous silica to generate said porosity and reactivity to or with CO2. The material is particularly useful as a CO2 adsorbent for Direct Air Capture (DAC) applications.

This invention provides a process for removing thallium from nickel sulfate solution, belonging to the field of nickel-cobalt hydrometallurgical technology. It solves the problems of low efficiency, unsatisfactory results, and insufficient removal depth in existing extraction processes for thallium removal from nickel sulfate solution, which fail to meet environmental protection requirements. The invention includes the following steps: saponifying a P204 extractant with a nickel sulfate solution; then adding a thallium-containing nickel sulfate solution for extraction and impurity removal; adding a C272 extractant to the first thallium-containing nickel sulfate solution for countercurrent extraction and impurity removal; adding 6-10 times the concentration of sodium sulfide according to the remaining thallium content in the second removal solution, followed by stirring, precipitation, and filtration; heating the third thallium-containing nickel sulfate solution, and then using a C-100E cation exchange resin for thallium adsorption to obtain the final thallium-removed nickel sulfate solution. This invention achieves stable control of the thallium content in the nickel sulfate solution, and the process adopts a step-by-step approach to increase the impurity removal depth, ultimately achieving deep thallium removal from the nickel sulfate solution.

The application provides a schreyerite adsorbent and a synthesis method and application thereof in treating chromium-contaminated wastewater. The synthesis method of the schreyerite adsorbent comprises the following steps: adding an iron-based amorphous strip into a Na2S2O8 aqueous solution, then adjusting the pH of the system to 2-3.5, and performing reaction; after the reaction is completed, filtering, washing and drying are performed to obtain the schreyerite adsorbent. The schreyerite adsorbent obtained by the method has high surface area and good adsorption performance, can effectively remove Cr(VI) in water as an adsorbent, has short adsorption reaction time, and has a maximum adsorption capacity for Cr(VI) under the same treatment condition, which is significantly higher than that of the existing schreyerite adsorbent, and has a wide application prospect.

This utility model discloses a device for testing the effectiveness of regenerated activated carbon, comprising: a solvent mixing mechanism, a VOC gas preparation mechanism, and a gas mixing mechanism, which work together to form a gas generation system. The gas generation system is used to prepare VOC gas of a preset concentration. The gas mixing mechanism is connected to an adsorption mechanism via a pipeline. The adsorption mechanism includes an adsorption reactor filled with regenerated activated carbon. The inlet and outlet of the adsorption reactor are both connected via pipelines and equipped with VOC gas concentration detectors. This device, after filling the adsorption mechanism with regenerated activated carbon, prepares VOC gas of a preset concentration according to the desired VOC gas concentration through the gas generation system. Two VOC concentration detectors then monitor the VOC gas concentration before and after purification in real time. The adsorption performance of the regenerated activated carbon for VOC gas can be directly judged based on the time and concentration of VOC gas introduced into the adsorption mechanism.

The application discloses a preparation method of a molybdenum disulfide film and relates to the technical field of film growth. The preparation method of the molybdenum disulfide film comprises the following steps: S100, providing a substrate and placing the substrate in a reaction cavity; S200, alternately feeding a molybdenum source and a sulfur source into the reaction cavity at a first temperature, and making the molybdenum source and the sulfur source alternately chemisorb on the surface of the substrate through an adsorption reaction epitaxy process to obtain alternately-stacked molybdenum source molecular layers and sulfur source molecular layers; S300, reacting the molybdenum source molecular layers and the sulfur source molecular layers at a second temperature to form a molybdenum disulfide precursor film; and S400, crystallizing the molybdenum disulfide precursor film at a third temperature to form a molybdenum disulfide film, wherein the first temperature, the second temperature and the third temperature increase in sequence. The preparation method of the molybdenum disulfide film provided by the application is used for realizing the preparation of a high-quality and low-pollution molybdenum disulfide film.

The present application belongs to the field of mineral composite adsorption materials, and provides a composite modified attapulgite clay adsorbent as well as a preparation method and application thereof. In the present application, the in-situ hydrolysis deposition is induced by the water phase pH of ferric chloride hexahydrate, so that the hydrated iron oxide (calculated as Fe(OH)3) is anchored on the surface of attapulgite clay, the intercrystalline pore channels of attapulgite clay, and the inner connected pore walls of particles. Then, the wet material kneading, granulation, drying, screening, and optional heat treatment are performed to form a granular composite modified body, so that the stable dispersion of active iron phase, low iron leaching, particle crushing strength, and wear resistance in water are considered, the operability of adsorption treatment of phosphorus-containing wastewater is improved, the problem of incoordination between particle integrity and adsorption performance, and between iron phase dispersion and low leaching is solved, and the present application is suitable for fixed bed, filter bag, and stirring adsorption reactor.

This invention discloses a purification system and method based on a combination of molecularly imprinted microspheres and tubular membranes. The system includes an adsorption reaction unit, a membrane separation and adsorption unit, and an elution and regeneration unit. The method involves the following steps: first, mixing the feed solution with molecularly imprinted microspheres for initial adsorption; then, pumping the slurry into a tubular molecularly imprinted membrane module, where the microspheres are retained, and the membrane simultaneously adsorbs residual target molecules for a second time; after washing, the target product is eluted and collected. This invention achieves nearly 100% adsorption yield through the synergistic effect of microspheres and membranes on the same target molecule, solving the problems of easy clogging of traditional chromatography columns and low capacity of single membranes. It is particularly suitable for the efficient purification of high-value components of natural products.

The application discloses a kind of based on ultrasonic extraction floatation cooperation's dredged sediment treatment resource system, comprising: pretreatment unit, first stage ultrasonic extraction reaction unit, second stage solid-phase adsorption reaction unit, third stage floatation separation unit, dehydration treatment unit, residual water treatment unit and nitrogen and phosphorus recovery unit.It also discloses a kind of based on ultrasonic extraction floatation cooperation's dredged sediment treatment resource method.The application solves the problems of low pollutant removal rate, high risk of secondary pollution of dredged soil and limited resource utilization in traditional dredged sediment treatment.Through the cooperation of "ultrasonic-liquid extraction-solid-phase adsorption-micro-nano bubble floatation" multi-unit, efficient release of nitrogen and phosphorus, simultaneous removal of microplastics, rapid separation of clean silt and pollution, and recycling of nitrogen and phosphorus for fertilizer production, the application realizes the resource utilization of clean silt.The whole process is green and low in consumption, suitable for compact arrangement on water or near shore, and can simultaneously meet the needs of sediment reduction, harmless and resource utilization.

The application discloses a gallium extraction material, a preparation method of the gallium extraction material and a gallium extraction method, and belongs to the technical field of nonferrous metallurgy. The gallium extraction material is a covalent organic framework adsorption material, which is prepared through Schiff base polycondensation reaction of aldehyde monomers and amino monomers, wherein the covalent organic framework adsorption material contains phenolic hydroxyl groups and pyridine rings. The preparation method of the gallium extraction material is as follows: the aldehyde monomers and the amine monomers are dispersed into an organic solvent, then at least one liquid nitrogen freezing-thawing treatment is carried out, the gallium extraction material is sealed, and the Schiff base polycondensation reaction is carried out in a gradient magnetic field generator. The gallium extraction material is added into an acidic gallium-containing solution to carry out an adsorption reaction, and gallium ions in the acidic gallium-containing solution are adsorbed. The application aims to solve the technical problems of low efficiency, poor selectivity and environmental unfriendliness in the extraction of gallium ions from the acidic gallium-containing solution.

The application discloses an ecological solidification method combining enzyme-induced mineralization and porous biomass carriers, and belongs to the technical field of vegetation slope protection. The method comprises the following steps: S1, performing surface chemical etching and physical cracking treatment on a natural plant cellulose-based material to obtain a porous biomass carrier; S2, soaking and adsorbing a reaction precursor component solution on the porous biomass carrier to obtain a composite fiber material loaded with the reaction precursor component; S3, laying the composite fiber material on a matrix soil layer to be solidified; and S4, applying an active catalytic liquid containing biological urease and a delayed calcium source cementing liquid to the surface of the matrix soil layer. The porous biomass carrier is introduced into the matrix to be solidified, and combined with the enzyme-induced calcium carbonate precipitation (EICP) technology, and joint solidification treatment is performed by applying the enzyme liquid and the cementing liquid. The method not only further improves the overall ecological solidification effect of the matrix, but also improves the physical structure of the matrix by adding the porous biomass carrier, so that the matrix is more suitable for subsequent plant growth.

The present application relates to a kind of air carbon capture regeneration systems driven by photothermal gradient temperature zone, belong to gas separation and purification field.The system includes: full-spectrum high multiple light collection module, multistage heterogeneous heat conduction distribution module, stepped functionalized adsorption reaction module, synergistic dynamic heat management control module and high-purity carbon dioxide purification and recovery module.It constructs non-uniform temperature field by light collection and gradient heat conduction, so that the adsorption module realizes the step-by-step desorption of carbon dioxide.Heat management module uses predictive control algorithm to coordinate heat flow and gas flow, solves the problem of insufficient photothermal integration and heat distribution imbalance.The present application realizes energy cascade utilization and photothermal energy peak shaving, significantly improves the regeneration efficiency and prolongs the service life of adsorbent, ensures the continuous steady operation of system under fluctuating conditions, has very high integration and reliability.

The invention discloses a method for resolution of D, L-menthol enantiomers, which comprises the following steps: (1) adding a D, L-menthol solution into a working unit filled with a chiral resolving agent, and enabling the chiral resolving agent and D, L-menthol to be fully subjected to adsorption reaction; (2) separating reactants obtained in the step (1): collecting feed liquid containing D-menthol; (3) adding an eluent into the working unit, and enabling the chiral resolving agent and the L-menthol to be fully subjected to desorption reaction; and (4) separating a reactant obtained in the step (3), and collecting a feed liquid containing the L-menthol. The method is simple to operate, reaction steps such as esterification and hydrolysis are not needed, and enantiomer resolution of D, L-menthol can be realized at normal temperature and normal pressure.

This invention discloses an adsorption reaction synergistic composite plant deodorizing liquid and its preparation process, relating to the field of plant deodorizing liquids. It comprises the following components: water, aloe vera extract, grapefruit peel extract, green tea extract, beetroot extract, rosemary essential oil, perilla extract, porous carrier silica, citric acid, zinc acetate, sodium dodecylbenzenesulfonate, and phenoxyethanol. This adsorption reaction synergistic composite plant deodorizing liquid and its preparation process utilize the active ingredients in aloe vera, grapefruit peel, green tea, beetroot, perilla extract, and rosemary essential oil to undergo complex chemical reactions such as addition, oxidation-reduction, neutralization, and condensation with volatile odor molecules such as ammonia, formaldehyde, and hydrogen sulfide. This directly alters the molecular structure of the odor, transforming them into non-toxic and odorless substances, achieving efficient and thorough deodorization at the molecular level.

The application relates to a 3D electrocatalytic PMS coupling system and application thereof. The system comprises an anode, a cathode, an electrolyte, a persulfate and a Cu@CA catalyst; wherein the anode is Ti4O7, the Cu@CA catalyst is prepared by the following steps: uniformly mixing a glucose solution and a CuCl2 solution, degassing through a freeze-vacuum-thaw cycle, then carrying out hydrothermal synthesis on the mixed solution, the temperature is 170-200 DEG C, the time is 300-500 min, after the reaction is completed, the reaction liquid is cooled, centrifuged and filtered to obtain a precipitate; the precipitate is washed, then dried and ground to obtain a precursor powder; the precursor powder is annealed for 1-3 h to obtain the Cu@CA catalyst. The coupling system solves the problem that the Ti4O7 has poor degradation effect on PPCPS, and meanwhile, the research opens up a new way for rational regulation of metal active sites and oxygen and water adsorption reaction.

This invention discloses a phosphate-modified Ni x Co y Preparation method of O@C cross-linked nanosheet array and its application in electro-oxidation of 5-hydroxymethylfurfural: Nickel foam is immersed in a mixed solution of cobalt nitrate hexahydrate and nickel nitrate hexahydrate for hydrothermal reaction, followed by ligand adsorption reaction in sodium phytate or sodium phenylphosphonite solution. Finally, calcination is performed to obtain phosphate-modified Ni. x Co y O@C cross-linked nanosheet array catalyst. This invention induces Ni through phosphate modification and surface carbon layer coating on the catalyst surface. x Co y The O@C surface electronic structure reorganization promotes the formation of high-valence active species; simultaneously, the surface carbon layer helps regulate the adsorption characteristics of reactive species, thereby effectively suppressing OER competitive reactions. The excellent cycling stability of this catalyst, and the successful separation and purification of FDCA products, indicate that this catalyst has broad market application prospects.

This invention relates to a drawer-type hydrated salt adsorption reactor and a method for storing and releasing heat, belonging to the field of thermochemical heat storage technology. The reactor includes a shell layer and an insulation layer disposed outside the shell layer; the outer wall of the shell layer has an air inlet and an air outlet, which are arranged opposite to each other; one wall of the shell layer is configured as a sliding door, and sealing strips are provided at the periphery of the sliding door; the inner wall of the shell layer has several pull-out support brackets, the axis of which is parallel to the fixed edge of the sliding door. The reactor of this invention can directly utilize natural light to start the heat storage reaction, eliminating the need for separate heat collection equipment and heat transfer fluids, simplifying the heat storage system and improving the utilization rate of solar energy.

This invention discloses a purification agent for removing CO and H2 from olefin disproportionation feedstock, its preparation method, and its application. The purification agent comprises a copper-based composite metal oxide and a silica molecular sieve. The component distribution coefficient D is defined as: D = (normalized weight content of the component measured by XRF) / (normalized weight content of the component measured by ICP), satisfying: DMO X The concentration is 0–0.8, and the concentration of DSiO2 is 1.8–5.0. This purifier is used in the process of removing CO and H2 from olefin disproportionation feedstock containing high-carbon olefins. It can selectively remove hydrogen and carbon monoxide from olefin disproportionation feedstock, and can also avoid the adsorption / reaction of small amounts of high-carbon olefins in the feedstock on the surface of the purifier, thus extending the service life of the purifier.

This invention belongs to the field of vehicle thermal management technology, and relates to a thermal management system and control method for hybrid vehicles. It connects a compression refrigeration circuit, an adsorption refrigeration circuit, and a cold storage and supply circuit through a three-channel cold storage device. The three fluids are refrigerant from the compression refrigeration circuit, adsorbed refrigerant from the adsorption refrigeration circuit, and coolant from the cold storage and supply circuit, respectively. The adsorption reactor of the adsorption refrigeration circuit is connected to the engine exhaust waste heat recovery path, and the exhaust waste heat drives the desorption reaction of the adsorbent in the adsorption reactor. The low-temperature heat exchange circuit includes a low-temperature heat exchanger connected to the adsorption reactor and various target temperature control components. The air side of the low-temperature heat exchanger acts as a radiator when the air is ambient air, and as a heater when the air is heated by the adsorption reactor. This invention improves the temperature control capability of the thermal management system under extreme environments, reduces the overall vehicle thermal management energy consumption, and can significantly improve the vehicle's all-encompassing environmental adaptability and energy utilization rate.

This invention proposes a carbon dioxide enrichment device and method, belonging to the field of carbon dioxide enrichment. It includes two reaction towers connected in parallel, each containing an equal amount of MOF (Metal-Oxide-Foil) packing material. The two towers alternately undergo carbon dioxide adsorption and desorption reactions through the MOF packing. While one tower is undergoing adsorption, the other tower employs an accelerated desorption strategy, ensuring that the time for complete desorption in the MOF packing is less than the time for complete adsorption. This invention enhances the adsorbent regeneration process by dividing the desorption process into three stages: rapid steam desorption, rapid vacuum dehumidification and cooling, and ambient temperature gas purging and cooling. These stages synergistically shorten the adsorbent regeneration cycle, making the desorption and regeneration time of one tower less than the adsorption operation time of the other tower, thus achieving continuous cyclic operation using a dual-tower configuration.

This invention discloses a carbon dioxide adsorption reactor, comprising an adsorption tower for adsorbing carbon dioxide from flue gas. The adsorption tower includes a heat exchange mechanism with several heat exchange tube groups arranged along its height. Each heat exchange tube group includes multiple reversible tube groups, each containing multiple heat exchange tubes. These heat exchange tubes absorb heat released by the adsorbent. Adjacent heat exchange tubes are connected by a first bend, and are staggered along the height of the adsorption tower, allowing the coolant within the reversible tube groups to flow in reverse both vertically and axially along the heat exchange tubes. This invention increases the contact area between the heat exchange tubes and the adsorbent, prolongs the residence time of the adsorbent at the heat exchange mechanism, and facilitates sufficient heat exchange between the adsorbent and the heat exchange tubes to absorb the heat released by the adsorbent, thereby improving the adsorption effect.

The application provides a high-efficiency temperature rising and falling reactor for a low-temperature carbon capture system, which can efficiently realize temperature rising and falling and uniform heat distribution, and comprises an inner reactor body, an outer shell and a sandwich cavity between the inner reactor body and the outer shell; the inner reactor body comprises a flue gas inlet, an adsorption cavity and a flue gas outlet connected in sequence, and the adsorption cavity is used for filling adsorbents; the inner side wall of the inner reactor body is provided with a heat exchange element, the inlet of the heat exchange element is selectively connected with a cold source or a heat source; the outer side wall of the inner reactor body is provided with a heating element; the sandwich cavity is used for introducing cold air; during an adsorption reaction, flue gas enters the adsorption cavity and reacts with the adsorbents, the inlet of the heat exchange element is connected with the cold source, and cold air is introduced into the sandwich cavity to remove the adsorption heat generated in the adsorption reaction; during a desorption reaction, the introduction of flue gas is stopped, the inlet of the heat exchange element is connected with the heat source, and the heating element is started to heat the adsorbents for desorption.

This invention relates to the field of plant growth regulation technology, and discloses a slow-release regulator for promoting plant growth and its preparation method, comprising the following steps: immersing pretreated coral sand in a hydrothermal ammonium humate solution to obtain a hydrothermal ammonium humate / coral sand complex; crushing and grinding fresh willow branches, soaking them in deionized water, and then separating the solid and liquid to obtain willow branch liquid; immersing hydrothermal carbon in the willow branch liquid to perform an adsorption reaction, adsorbing the natural plant growth hormones in the willow branch liquid to obtain a willow branch liquid / hydrothermal carbon complex; mixing and granulating the hydrothermal ammonium humate / coral sand complex, willow branch liquid / hydrothermal carbon complex, bentonite, sodium alginate, and CaCl2 to obtain the slow-release regulator. This invention combines a coral sand complex loaded with hydrothermal ammonium humate and a hydrothermal carbon complex loaded with willow branch liquid as a slow-release regulator for promoting plant growth, achieving the slow release of hydrothermal humic acid while providing calcium for plant growth.