275 results about "Mass transfer rate" patented technology

The invention discloses a gas self-excitation modulation device, an enhanced pollution aeration treatment system and an application method of the enhanced pollution aeration treatment system, through the arrangement of the gas self-excitation modulation device, intermittent modulation airflow matched with an orifice bubble generation process is formed, the instantaneous pulse acting force for upward separation of bubbles is increased, the bubble generation time is shortened, and the aeration bubble size is reduced; and the mass transfer rate of the gas-liquid interface is further improved. According to the invention, the existing laid aerator does not need to be replaced, the aerator material does not need to be modified, and the method is widely applicable to microporous aerators in any form; a water phase does not need to be driven to flow, so that energy consumption is greatly reduced, and adverse disturbance to a target water body is avoided; compared with a gas dissolving method and a jet flow air entraining method, the technology only drives a gas phase to enter a liquid phase, energy is saved, and meanwhile full-amount treatment of target liquid can be achieved. In addition, through sectional arrangement of the oscillation cavity self-excitation unit and the outflow unit, batch application can be carried out.

The invention belongs to the technical field of carbon sequestration, and particularly relates to a fluidization reaction device and method for efficiently mineralizing carbon dioxide by solid waste, and the method comprises the following steps: pretreating the solid waste to obtain solid waste powder; the method comprises the following steps: atomizing an alkaline solvent into water mist, inputting CO2 gas and the water mist into a fluidized bed reactor by utilizing a fan, and adding solid waste powder into the fluidized bed reactor; the mass ratio of the water mist and the solid waste powder entering the fluidized bed reactor and the gas flow speed of the CO2 gas and the water mist are adjusted, gas-liquid-solid three-phase fluidization is conducted on the solid waste powder in the fluidized bed reactor under driving of the gas phase of the CO2 gas, and mineralization reaction is conducted; after full reaction, discharging solid waste powder by using a rotary discharging device, and drying the solid waste powder to constant weight by using a constant-temperature drying box to obtain an auxiliary cementing material; according to the method, the contact efficiency and the mass transfer rate of the solid waste and CO2 can be improved, the solid waste can quickly react with CO2 gas in the fluidized bed reactor, the reaction time is remarkably shortened, and the low cost and the high efficiency of the CO2 mineralization reaction of the solid waste powder are realized.

The invention discloses a preparation method of a high-activity hierarchical pore boric acid imprinted hydrogel microsphere adsorbent and application of the adsorbent to selective adsorption of a flavonoid compound naringin NRG. According to the invention, dopamine is used for modifying COFs so as to enhance surface functionalization of COFs; preparing a sulfydryl functionalized covalent organic framework microsphere; synthesizing sulfydryl microspheres by utilizing an emulsion interfacial polymerization method; preparing a COFs boron affinity imprinting microsphere adsorbent based on boron affinity interaction; the adsorbent is applied to selective adsorption of NRG in agricultural wastewater. The prepared adsorbent has a remarkable multilayer adsorption effect, and the adsorption capacity is remarkably improved through the boron affinity effect. The multi-stage pore structure of the COFs microspheres provides abundant sites for adsorption, and the mass transfer rate is remarkably improved. In addition, the prepared adsorbent shows remarkable specificity in the aspects of adsorption and separation of NRG, and a promising adsorption material is provided for industrial separation of NRG.

The invention discloses a water electrolysis hydrogen production anion exchange membrane electrolytic bath which comprises a bath body, an alkali corrosion resisting anode electrode, an alkali corrosion resisting cathode electrode, an anion exchange membrane and a driving mechanism, the alkali corrosion resisting anode electrode, the alkali corrosion resisting cathode electrode, the anion exchange membrane and the driving mechanism are arranged in the bath body, and the driving mechanism comprises a double-shaft motor, a swing assembly and a reciprocating motion assembly. Wherein the swing assembly realizes the swing of the alkali-corrosion-resistant anode electrode, and the reciprocating motion assembly realizes the reciprocating motion of the alkali-corrosion-resistant cathode electrode. According to the application, the double-shaft motor drives the swing assembly and the reciprocating motion assembly to operate simultaneously, so that the alkali corrosion resisting anode electrode swings, the alkali corrosion resisting cathode electrode reciprocates, electrolyte near the electrodes flows and is disturbed, and the dynamic change breaks a concentration boundary layer of the electrolyte near the surfaces of the electrodes; the migration of ions in the electrolyte to the surface of the electrode and the diffusion of reaction products from the surface of the electrode are accelerated, so that the mass transfer rate is improved, and the electrolytic reaction can be carried out more efficiently.

The invention discloses a method for preparing a graded porous nickel electrode by step-by-step dealloying and application thereof, and the method comprises the following steps: spraying a nickel-aluminum material on a nickel-based substrate to obtain a first intermediate product; performing heat treatment on the first intermediate product to obtain a second intermediate product; the second intermediate product is sequentially placed in alkali liquor with different concentrations for step-by-step activation, and the graded porous nickel electrode is obtained; in the step of step-by-step activation, the concentration of the alkali liquor is gradually reduced, and the activation temperature is gradually reduced. According to the graded porous nickel electrode, the efficient mass transfer rate and catalytic efficiency are guaranteed; the bonding strength between the coating and the substrate is high, the interlayer structure is stable, the mechanical property and stability are good, and the service life is long; and the hierarchical porous structure can be constructed only through step-by-step activation, so that the preparation process is remarkably simplified.

The utility model discloses a novel advanced oxidation device which comprises an outer shell, a gas-liquid mixing chamber, an ultrasonic atomization disc, a gas inlet hole, a water inlet hole, a connecting ozone generator, a UV reaction coil pipe and the like. Through ultrasonic wave catalysis and ultraviolet light catalysis, H2O is excited by O3 and a large amount of. OH with higher oxidability is generated, the mixing degree and turbulent fluctuation intensity of ozone and sewage are improved, the mass transfer coefficient is increased, the mass transfer rate of ozone is increased, and four-section oxidation reaction is carried out in one reactor, so that the ozone oxidation efficiency and effect are greatly improved; and a reinforced oxidation effect is generated on pollutants in the wastewater, so that the pollutants in the wastewater are degraded and removed.

The preparation method comprises the following steps: fully mixing a good solvent and a poor solvent of a polymer, adding a film-forming polymer while stirring at room temperature, fully dissolving to form a homogeneous solution, and then coating or spinning the homogeneous solution to form a primary membrane; immersing the primary membrane into a coagulating bath of which the temperature is higher than the low critical solution temperature of the homogeneous solution for phase separation; according to the invention, heat transfer is adopted as driving force, so that a polymer composition change route rapidly passes through a bisection line area, and spiral section line phase splitting is carried out, so that a complex mass transfer rate regulation process is avoided. And meanwhile, by utilizing the characteristic of low critical solution temperature of a polymer system, the inconvenience conditions of high-temperature operation environment, extraction agent recovery and the like in a thermally induced phase separation process are overcome.

The invention belongs to the technical field of lithium ion battery electrode materials, and particularly relates to a fluorine-doped long-circulation silicon-based negative electrode material as well as a preparation method and application thereof. The silicon-based material is doped and modified by using the fluoride, the doping and modification of the fluoride on the silicon-based particles are realized by using simple and convenient dry mixing and heat treatment means, F doping can be performed on the silicon-based particles by introducing the fluoride, and a high-strength solid electrolyte interface (SEI) rich in LiF is continuously formed in the expansion and pulverization process of the silicon-based particles. And meanwhile, the mass transfer rate is improved through bulk phase doping elements, uneven lithiation and stress concentration are reduced, and the cycling stability of the silicon-based composite negative electrode material is comprehensively improved. The preparation method disclosed by the invention is simple to operate, cheap in raw materials and easy for large-scale production, has a good application prospect in lithium ion battery negative electrode materials, and has a relatively high commercial value.

The invention belongs to the technical field of waste plastic treatment, and particularly relates to a method for preparing light aromatic hydrocarbon through catalytic pyrolysis of waste polyolefin plastic. According to the invention, a microporous molecular sieve ZSM-5 is coated in an ordered mesoporous layer SBA-15 by using a super-dilute liquid phase coating method, so that the coated catalyst ZSM-5-coated SBA-15 with the packaging thickness of 60-185 nm is prepared. The coated catalyst has an ordered mesoporous encapsulation layer, and can be pre-cracked and enrich plastic pyrolysis volatile components in the reaction, so that the mass transfer rate is increased, the generation of light aromatic hydrocarbons is promoted, the generation of macromolecular chain hydrocarbon substances in the catalytic pyrolysis process is inhibited, and the efficient preparation of light aromatic hydrocarbons by catalytic pyrolysis of waste polyolefin plastics is realized. Compared with the traditional ZSM-5, when the packaging thickness of the ZSM-5-coated SBA-15 is 90nm, the yield of light aromatic hydrocarbon is 31.02 wt.%, the amplification is up to 49.14%, and meanwhile, the heavy chain hydrocarbon byproduct is reduced by 42.17%.

The invention belongs to the field of powder material processing, and particularly relates to a drying and cooling all-in-one machine and a drying and cooling method.The drying and cooling all-in-one machine is characterized in that a fluidized drying section, a fluidized cooling section and a gravity cooling section are arranged in a shell body from top to bottom, so that materials of the fluidized drying section and the fluidized cooling section are in a fluidized state; by means of the arrangement, materials fed from the feeding port are rapidly spread in the horizontal direction, even particle distribution is formed in the cross section of the shell body, the materials downwards, evenly and integrally pass through the gravity cooling section, and uneven cooling caused by material segregation and different cooling speeds of all the materials is eliminated; the high heat and mass transfer rate brought by material fluidization is utilized, and the materials are efficiently dried in the drying section; and damp and hot gas can be effectively replaced in the fluidization cooling section, so that material scabbing is avoided. After the material subjected to fluidized drying, cooling and dry gas replacement enters the gravity cooling section, a refrigerant with lower temperature can be adopted for cooling, and meanwhile, the cooling efficiency and the cooling effect are improved.

The invention relates to the technical field of underground water treatment, in particular to a heat conduction reinforced in-situ aeration system for treating underground water pollution, which comprises a hot water circulation and hot steam generation system, a heat conduction pipe and an aeration well, the system comprises an underground cavity used for containing water, a chemical adding system used for injecting chemicals into the water-containing layer, and an extraction system used for extracting gas in the underground cavity and purifying the gas, and hot steam is injected into the pollution plume, so that the temperature around the pollution plume is increased, pollutant diffusion and the gas-liquid mass transfer rate are increased, the remediation range is expanded, and the air disturbance (AS) remediation efficiency is improved. The hot steam also forms an airflow barrier on the outer side of the pollution plume to separate the pollution plume from the outside, so that the migration and diffusion of pollutants are avoided; and hot water is introduced into the heat conducting pipe, so that the temperature of underground water is increased, the volatilization efficiency is improved, and the utilization rate of heated water is improved.

The present invention relates to a flow channel structure of an alkaline electrolytic cell and an alkaline electrolytic cell, the flow channel structure comprises a plate body, the plate body is provided with an inlet end and an outlet end; a dotted spoiler structure unit is distributed on the plate body, the dotted spoiler structure unit forms a fluid flow channel on the plate body, the dotted spoiler structure unit comprises a first-level spoiler structure unit, a second-level spoiler structure unit, and a third-level spoiler structure unit, the first-level spoiler structure unit, the second-level spoiler structure unit and the third-level spoiler structure unit form a shunt flow channel on the plate body. The present invention promotes the lateral flow capacity and mass transfer rate of the electrolyte, effectively improves the flow uniformity of the electrolyte, makes the electrolyte fully utilized in the process of electrolysis, and effectively improves the electrolysis efficiency. And it can effectively discharge the gas generated by the electrolysis reaction, reduce the generation of local hot spots, and effectively improve the service life of the alkaline electrolytic cell.

The invention belongs to the technical field of materials, and relates to a high-capacity lithium adsorbent as well as a preparation method and application thereof. The method comprises the following steps: preparing an organic polymer spinning solution from an organic polymer framework material, a hydrophilic fragment material, a gradient pore forming agent and adsorbent active powder; performing wet spinning by using the organic polymer spinning solution to obtain a lithium adsorbent crude product; and performing post-treatment on the lithium adsorbent crude product to obtain a lithium adsorbent finished product. The lithium adsorbent disclosed by the invention can quickly adsorb lithium ions in a solution in a high-capacity manner in the presence of high-concentration impurity ions, and can solve the problems of low capacity and slow mass transfer rate of a granulation lithium adsorbent in the process of extracting lithium from a salt lake. The lithium adsorbent disclosed by the invention has excellent stability and durability, is low in operation cost and is suitable for an industrial-scale lithium extraction process.

The present invention provides a particle collision disturbance type gas lift loop reactor, the reactor comprising: a reactor body; a draft tube with a sieve plate; particles, which can be suspended inside the draft tube when the reactor is running; a gas distributor; a main liquid distributor; a gas inlet; a liquid inlet; a gas outlet; and a liquid outlet. Compared with the traditional gas lift loop reactor, due to the turbulent disturbance of particles and fluid inside the draft tube of the reactor, it helps to prevent gas phase aggregation and increase liquid phase back mixing, so that the gas and liquid phases in the reactor are fully mixed, the solubility of the gas phase in the liquid phase and the gas-liquid contact area are increased, the mass transfer rate and heat transfer rate between fluids are improved, and at the same time, the temperature distribution in the reactor is uniform, which is conducive to gas-liquid two-phase reaction or gas-liquid-solid three-phase reaction, and can be widely used in gas-liquid two-phase or gas-liquid-solid three-phase chemical reaction processes.

The invention relates to the technical field of computers, in particular to an airtight film material application performance evaluation method, device and equipment and a medium. Firstly, multiple groups of environment data for simulating indoor and outdoor environments are obtained through an environment simulation experiment table; based on the multiple sets of environment data, the air permeation amount in gaps of the doors and windows is obtained; acquiring indoor temperature and outdoor temperature when the door and window are made of the airtight film material; based on the indoor temperature and the outdoor temperature, cold air heat consumption is obtained; obtaining the mass resistance of a hole gap, the sectional area of the hole gap, the indoor humidity and the outdoor humidity when the window is made of the airtight film material; the moisture mass transfer rate is obtained based on the mass resistance of the hole gap, the sectional area of the hole gap, the indoor humidity and the outdoor humidity, and the application performance of the airtight film material is evaluated based on the air permeation amount in the gap, the cold air heat consumption amount and the moisture mass transfer rate. Therefore, the technical problem of how to evaluate the application performance of the airtight film material is solved.

The invention discloses a wastewater treatment intelligent monitoring method and device based on big data and a medium, and relates to the technical field of environmental engineering, and the method comprises the steps: based on a structured data set, combining a wastewater treatment process, constructing a mass conservation equation, mass transfer rate constraint and reaction kinetics constraint, and generating a state variable set with mechanism constraint; according to the state variable set, constructing a time sequence prediction model based on a long short-term memory network, and obtaining a prediction result in combination with mechanism constraints; and by taking the emission standard limit value, the equipment operation boundary condition and the process safety range as constraint conditions, establishing a multi-objective optimization function of energy consumption, the water quality standard reaching rate and the medicament dosage, and performing quantitative modeling in combination with a prediction result to generate a multi-objective optimization model. According to the invention, scientificity and reliability of prediction input are improved, and cooperative control of energy saving, standard reaching and cost is realized.

The invention discloses a fuel cell gas diffusion layer containing a wave channel, and a preparation method and application thereof. The preparation method comprises the following steps: cutting a substrate layer material and designing the wave channel; the substrate layer material is placed on a laser etching adsorption platform, laser etching is conducted on the first surface of the substrate layer material, a wave channel is obtained, and the extending direction of the wave channel is parallel to the length direction of the substrate layer material; carrying out hydrophobic treatment on the substrate layer material containing the wave channel; then mixing and stirring conductive carbon black, a binder, an emulsion and water to obtain microporous layer slurry; and finally, spraying the microporous layer slurry on the second surface of the substrate layer material, and then drying, thermally treating and curing the substrate layer material to obtain the fuel cell gas diffusion layer containing the wave channels. According to the fuel cell gas diffusion layer containing the wave channels, the mass transfer rate can be increased, transmission and supply of hydrogen and oxygen in air are improved, generated water is effectively discharged, and aggregation of liquid water in the flow channels is reduced.

The invention discloses a method for preparing an adsorption material for simultaneously extracting rubidium and cesium by using soft / hard template co-assembly and application, and belongs to the technical field of adsorption material preparation. The invention aims to solve the problems that a traditional adsorbent is poor in selectivity to similar alkali metal ions, slow in mass transfer rate, insufficient in acid environment stability and lack of an adsorption material for specific recognition of rubidium and cesium ions. The method comprises the following steps: 1, preparing cesium-imprinted hierarchical-pore mesoporous silica; 2, Cs / Rb-HMS is prepared; according to the invention, a macroporous-mesoporous channel is constructed; wherein a large hole (PS template) provides a rapid mass transmission channel, and an ion diffusion path is remarkably shortened, so that target ions can rapidly reach adsorption sites in the material; mesopores (Pluronic F127 template) provide a huge specific surface area and load a large number of Cs < + > imprinting sites and Rb < + > imprinting polymer layers, so that high adsorption capacity to Cs < + > and Rb < + > is ensured.

The present invention belongs to the field of green hydrogen energy, and provides a low-cost catalytic electrode, preparation and application for rapid full electrolysis of seawater to produce hydrogen. The bifunctional catalytic electrode uses a three-dimensional self-supporting foam as a catalyst carrier, and an array of nickel iron sulfide nanosheets is in situ grown on the surface of the carrier as a catalyst. This three-dimensional nanosheet array structure helps to expose more active sites and increase the proton and gas mass transfer rates. The synergistic effect of the bimetallic helps to improve the intrinsic catalytic activity of the electrode. The sulfur anions oxidized on the surface during the catalytic process can inhibit the adsorption of chloride ions on the surface. At the same time, the catalyst raw materials are cheap. The present invention is directly used for the cathode and anode of rapid full electrolysis of seawater to produce hydrogen. It has an industrial-grade current density (500mA cm-2) at a relatively low driving potential (1.85V) in alkaline seawater. ‑2 ), which can be used as a low-cost catalytic electrode for the future rapid all-electrolysis of seawater to produce hydrogen.

The utility model discloses a device for treating deeper bottom mud in situ by utilizing gas stripping, and relates to the technical field of water environment pollution treatment. The device comprises a gas stripping lifting pipe and a water body moving device, a stirring machine is installed on the top face of the gas stripping lifting pipe in a sliding mode, a plurality of impellers are arranged at the output end of the stirring machine, a bottom mud backflow pipe is fixedly arranged on the outer surface of the gas stripping lifting pipe in a sleeved mode, and the bottom mud backflow pipe is installed on one side of the water body moving device in a sliding mode. A plurality of gas stripping mud pipes are arranged on the outer surface of the top of the gas stripping lifting pipe, deep bottom mud is subjected to gas stripping lifting, then reoxygenation and chemical adding are conducted, then the deep bottom mud returns to a bottom mud layer, a slow-release carbon source, a phosphorus removal chemical and nitrate are brought to the bottom mud layer with insufficient oxygen, and pollutants in the bottom mud are removed in situ. The loosening of the bottom mud layer can enhance the mass transfer rate in the bottom mud, and an anoxic environment is formed in the bottom mud layer. According to the in-situ bottom mud treatment device, in-situ bottom mud treatment is realized in a simple manner.

The invention discloses a method for preparing a membrane electrode of a proton exchange membrane fuel cell by a template method. The method comprises the following steps: 1) selecting a nano material as a template agent; 2) fixing a template agent on a proton exchange membrane to obtain a proton exchange membrane A; 3) uniformly mixing a catalyst, a solvent and an ionomer to form catalyst ink; 4) spraying the catalyst ink on the proton exchange membrane A and drying to obtain a proton exchange membrane B; 5) placing the proton exchange membrane B in an etching solution to obtain a proton exchange membrane C; and 6) tightly attaching the proton exchange membrane C to the gas diffusion layer, and then carrying out hot pressing at high temperature and high pressure by a hot press to finally obtain the membrane electrode of the proton exchange membrane fuel cell. According to the membrane electrode prepared by the preparation method, an ordered pore channel structure can be constructed in the catalyst layer, so that the mass transfer rate of oxygen and water in the catalyst layer is improved, and the performance of a proton exchange membrane fuel cell is improved.

The invention belongs to the technical field of organic synthetic chemistry, and particularly relates to a synthesis process of N-methylaniline. By adopting the special biomass porous carbon loaded nickel-copper bimetallic catalyst, the selectivity and the conversion rate of the reaction are improved, and the generation of byproducts is reduced, so that the burden of subsequent separation is reduced, the utilization rate of the raw materials is improved, and the yield is increased by introducing the micro-channel reactor and combining a microwave heating technology. Compared with the prior art, the method has the advantages that the mixing efficiency and the heat mass transfer rate of materials are improved, the reaction time is shortened, in the separation and purification process, a membrane separation and rectification combined technology and an efficient phase splitter are adopted, salt water is not needed, salt-containing wastewater is avoided, meanwhile, the recovery efficiency of methanol and aniline is improved, and cyclic utilization of a solvent is achieved. The whole process reduces the energy consumption, improves the production efficiency, reduces the emission of pollutants and meets the requirements of green chemistry through waste heat recovery, heating mode optimization and separation process.

The invention belongs to the technical field of lithium ion battery electrode materials, and particularly relates to a metal-doped modified SiOx-based composite negative electrode material as well as a preparation method and application thereof. According to the preparation method, SiOx is doped and modified by using metal capable of forming an alloy with Li, and metal clusters loaded on the surfaces of particles can enter a solid electrolyte interface (SEI) in an in-situ doping manner in a circulation process, so that the adsorption of lithium ions in an electrolyte and the ion transmission rate on the interface are greatly enhanced in a form of forming an alloy with lithium ions; the interface coupling effect between the silicon-based particles and the single-walled carbon nanotubes can also be promoted; in addition, the metal elements doped into the silicon-based particles can effectively inhibit disproportionation, improve the mass transfer rate in the silicon-based particles, homogenize an ion concentration field and an electric field, reduce stress concentration and effectively improve the cycling stability of the SiOx-based negative electrode.

The invention discloses a method for enriching light metal ions in a pore channel based on carbon nanofiber / carbon fiber nano confinement, and belongs to the technical field of sample pretreatment, and the method comprises the following steps: S1, preparing a carbon nanofiber / carbon fiber confinement material; and S2, putting the carbon nanofiber / carbon fiber confinement material obtained in S1 into a light metal ion solution, and stirring. According to the method for enriching the light metal ions in the pore channel based on the carbon nanofiber / carbon fiber nano confinement, the carbon nanofiber / carbon fiber is used as a confinement fluid carrier, ultrapure water, methanol or n-hexane is used as an extracting agent, a chelating agent does not need to be introduced, the method is green and environmentally friendly, the mass transfer rate is increased, and the method is suitable for large-scale industrial production. Therefore, high enrichment of light metal ions in water is realized.

The invention discloses a method and system for continuously synthesizing 2, 4-dichloroacetophenone, and the method for continuously synthesizing 2, 4-dichloroacetophenone comprises the following steps: S1, mixing m-dichlorobenzene and a catalyst to form a turbid liquid, and continuously inputting the turbid liquid into a tubular reactor; s2, enabling gas-phase acetyl chloride to pass through a micro-interface generator to form micron-sized microbubbles, continuously inputting the micron-sized microbubbles into a tubular reactor, and carrying out mixed reaction on the micron-sized microbubbles and the turbid liquid to obtain a mixed reaction liquid; and S3, continuously inputting the mixed reaction liquid and water into a hydrolysis reactor, and carrying out hydrolysis and separation to obtain 2, 4-dichloroacetophenone. According to the invention, the traditional kettle type stirring reaction is changed into micro-interface reaction, and the mass transfer area and the total mass transfer rate among multiple phases can be multiplied, so that the reaction rate is greatly improved, the side reaction is effectively controlled, and meanwhile, the product yield, the reaction safety and the like are improved.

The application discloses a Pickering emulsion based on ring-shaped colloidal particles, a preparation method thereof and application thereof in biphasic interface catalysis. The Pickering emulsion is an oil-in-water emulsion, which comprises a water phase, an oil phase and ring-shaped colloidal particles. The oil phase is dispersed in the water phase in the form of small droplets. The ring-shaped colloidal particles are located at an oil-water interface or at the oil-water interface and the water phase, and the ring-shaped colloidal particles are assembled to form a monolayer structure on the oil-water interface. The Pickering emulsion is not only beneficial to the contact between reactants or between the reactants and a catalyst, but also can enhance the interface mass transfer rate, promote the product to rapidly diffuse from one phase to another phase, has advantages of high conversion rate, high catalytic efficiency, simple product separation and the like, and has an important application prospect in the field of interface catalysis.

The application discloses a preparation method of a high-activity multi-level-pore boronic acid imprinting hydrogel microsphere adsorbent and application of the adsorbent to selective adsorption of a flavonoid compound naringin (NRG). The application enhances surface functionalization of COFs by dopamine modification, prepares thiol functionalized covalent organic framework microspheres, synthesizes thiol microspheres by using an emulsion interfacial polymerization method, prepares COFs boron affinity imprinting microsphere adsorbents based on boron affinity, and applies the adsorbents to selective adsorption of NRG in agricultural wastewater. The prepared adsorbent has a significant multi-layer adsorption effect, and the adsorption capacity is significantly improved by using boron affinity. The multi-level-pore structure of the COFs microspheres provides abundant sites for adsorption, and significantly improves the mass transfer rate. In addition, the prepared adsorbent has significant specificity in adsorption and separation of NRG, and provides a promising adsorption material for industrialized separation of NRG.

The invention relates to the technical field of glass etching, and discloses a multi-layer liquid medicine tank type camera lens chemical thinning treatment device which comprises a base. The machine shell is arranged at the top of the base, a spraying pipe communicated with external storage equipment is fixedly installed on the inner wall of the machine shell, a carrier frame is rotatably installed on the base through a fixing frame arranged at the top of the base, an adjusting piece is arranged in the carrier frame, and a limiting piece used for fixing a lens is arranged in the adjusting piece. The multi-layer liquid medicine tank type camera lens chemical thinning treatment equipment can effectively solve the problems that in the prior art, a lens is in a static fixed state in an etching carrier, so that flowing of etching liquid on the surface of the fixed lens presents a laminar flow characteristic, a stable boundary layer is formed close to the surface of the lens, and in the boundary layer, the thickness of the lens is reduced. Etching ions need to penetrate through a liquid film through diffusion mass transfer to reach the surface of the glass, and the etching rate is limited due to the low diffusion mass transfer rate.

The application discloses a novel advanced oxidation device which comprises an outer shell, a gas-liquid mixing chamber, an ultrasonic atomization disc, an air inlet hole, a water inlet hole, an ozone generator, a UV reaction disc tube and the like. Through ultrasonic catalysis and ultraviolet light catalysis, O3 is excited to generate a large amount of higher oxidizing ·OH, the mixing degree and turbulence intensity of ozone and sewage are improved, the mass transfer coefficient is increased, the mass transfer rate of ozone is improved, four-stage oxidation reactions are carried out in one reactor, and thus the ozone oxidation efficiency and effect are greatly improved, the pollutants in the wastewater are subjected to intensified oxidation, and thus the pollutants in the wastewater are degraded and removed.

The invention discloses a method for preparing a ZSM-5 molecular sieve by in-situ crystallization of kaolin and application of the ZSM-5 molecular sieve. A catalytic cracking catalyst for petroleum hydrocarbons mainly depends on ZSM-5 molecular sieves as active components, so that a green synthesis mode for developing a molecular sieve catalyst with good performance is very important. The preparation method comprises the following steps: uniformly stirring a NaZSM-5 molecular sieve, kaolin, water glass, aluminum hydroxide, silica sol, magnesium chloride and the like, performing spray granulation, performing segmented roasting to activate aluminum and silicon elements in the kaolin, and finally adding sodium hydroxide and ethanol for dynamic crystallization, pickling and roasting to obtain the molecular sieve. The molecular sieve can be used as an active component in light hydrocarbon cracking, has a rich pore structure and a larger specific surface area, is beneficial for oil-gas components to enter pores of the molecular sieve, is short in diffusion path, is higher in mass transfer rate in the reaction process, can quickly diffuse out a generated product, and can more effectively improve the conversion rate of the reaction. In a catalytic cracking reaction, the molecular sieve has better reaction stability while increasing the yield of ethylene and diene.