95 results about "Mass transfer rate" patented technology

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 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 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 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 present invention provides mesh rolled scaffold devices and bioreactor systems that can provide a large surface-to-volume ratio for expanded cell culture. The mesh rolled scaffolds minimize shear stress on cultured cells and support sufficient and uniform mass transfer rates of gases and nutrients. The mesh rolled scaffolds can be connected to a media source via holders in bioreactor systems to support large-scale expansion and maintenance of cell cultures. The present invention also provides the bioreactor systems that can include dialyzers and heat exchangers to modify media and other fluids passing through the systems. The bioreactor systems include media and other fluid reservoirs that can support high stirring rates between about 100 and 10000 rpm, and the overall systems can be pressurized between about 1 and 10 atm to increase gas exchange rates.

The invention relates to the technical field of adsorption materials, and particularly discloses a molecularly imprinted hydrogen bond organic framework adsorption material as well as a preparation method and application thereof. According to the material, tetra (4-sulfonyl phenyl) methane and 1, 1 '-diamino-4, 4'-dipyridyl diiodide are used as construction units to form a hydrogen bond organic framework substrate, and a hemp essence drug template molecule is introduced to construct a specific imprinting hole in the hemp essence drug template molecule. The preparation method is characterized in that the molar ratio X of template molecules to tetra (4-sulfonyl phenyl) methane is controlled to be 0.05-0.5, crystallization is performed in a water / methanol mixed solvent, and then elution and activation are performed through an acid solution with the pH being 2-4. The material has the advantages of high adsorption capacity, no less than 58 mg / g of template molecule adsorption capacity, high selectivity and rapid adsorption kinetics, achieves balance within 5 minutes, can efficiently enrich trace hemp extract drugs from a water environment or biological fluid, and solves the technical problem that the selectivity, the capacity and the mass transfer rate of the existing adsorption material are difficult to consider at the same time.

The application provides a full-core fouling deposition prediction method and device based on a porous medium model. The method comprises the following steps: S1, modeling a pressurized water reactor core as a porous medium model and performing regular coarse grid division; S2, solving the porous medium model based on a core power distribution obtained in a previous iteration step to obtain a flow field and a phase field distribution at the current iteration step; S3, calculating a fuel rod cladding surface temperature based on the core power distribution and the flow field and the phase field distribution; S4, calculating a phase change mass transfer rate by using a boiling phase change rate model based on the cladding surface temperature and local thermal parameters; S5, calculating a fouling deposition rate by using a deposition model based on total mass balance based on the phase change mass transfer rate; S6, calculating a fouling deposition mass and a boron compound mass according to the fouling deposition rate; and S7, performing neutron calculation by taking the fouling deposition mass and the boron compound mass as input to obtain an updated core power distribution.

The invention discloses a supergravity device capable of promoting foaming and devolatilization of a high-viscosity polymer and an application method. The supergravity device comprises a shell, a motor, a distribution disc, a rotor, an ultrasonic generation device, a liquid feeding hole, a gas outlet, a liquid discharging hole and a gas inlet, a rotating shaft of the motor penetrates through the lower surface of the shell and extends into the shell; the upper end of the rotating shaft is fixedly connected with the rotor; a packing ring is fixed on the circumference of the upper surface of the rotor, and a cavity structure in the middle of the packing ring forms a liquid inlet cavity; a distribution disc fixedly connected with the upper surface of the rotor is horizontally arranged in the liquid inlet cavity; the motor is connected with the rotor through a rotating shaft; according to the method, ultrasonic energy is introduced into a super-gravity field, liquid film updating is enhanced through the sound field cavitation and fluid disturbance effect, and multi-scale coupling of the sound field and the gravity field is achieved in combination with interface structure and wettability regulation and control, so that the gas-liquid mass transfer rate and devolatilization efficiency are remarkably improved, and the TDI removal rate is larger than or equal to 90%.

The invention belongs to the technical field of oil and gas field development and research, and relates to a method and system for predicting the solubility of a non-Newtonian polymer in a forced stretching device and a readable medium, and the method comprises the following steps: obtaining the viscosity of a target polymer after natural dissolution, and fitting an intrinsic equation according to the viscosity; based on the intrinsic equation and the swelling behavior of the polymer particles, establishing a swelling double-fluid model, and inputting the mass transfer rate of the non-Newtonian polymer into the swelling double-fluid model to generate a liquid phase volume fraction and a solid phase volume fraction; inputting the volume fractions of the liquid phase and the solid phase into a component transport equation to generate the mass fractions of all components in the solid phase so as to obtain the solid density; inputting the liquid-phase and solid-phase volume fractions into the group equilibrium model to generate the average particle size of solid-phase particles; coupling output results in the swelling double-fluid model, the component transport equation and the group balance model to obtain the dissolving property of the non-Newtonian polymer. The method can more accurately predict the behavior characteristics of particles in non-Newtonian complex fluid so as to realize the process optimization of polymer rapid dissolution configuration.

The invention provides a device system and method for preparing high-purity lithium carbonate through micron / nano bubble deep carbonization-pyrolysis. The device system comprises a slurrying device, a first-stage deep carbonization device, a second-stage deep carbonization device, a pyrolysis device, a nano bubble generator, a first-stage micro bubble generator and a second-stage micro bubble generator. The slurrying device, the first-stage deep carbonization device, the second-stage deep carbonization device and the pyrolysis device are sequentially connected along the material flow direction; the first-stage deep carbonization device is bidirectionally connected with the first-stage microbubble generator; the secondary deep carbonization device is bidirectionally connected with the nano bubble generator; and the pyrolysis device is bidirectionally connected with the secondary microbubble generator. A micro-bubble generator or a nano-bubble generator is introduced into the first-stage deep carbonization device, the second-stage deep carbonization device and the pyrolysis device, so that the CO2 mass transfer rate is increased, the deep carbonization of lithium carbonate and the pyrolysis process of lithium bicarbonate are enhanced, and a uniform and fine high-purity lithium carbonate product can be efficiently prepared.

Embodiments of the present specification provide a crystal growth apparatus and a raw material recovery method, the apparatus comprising: a crucible for accommodating a crystal growth raw material; at least part of the seed crystal support can be immersed in a melt formed by the crystal growth raw materials in the crucible; the seed crystal support comprises a seed crystal bonding surface; the first supporting structure is connected with one side, opposite to the seed crystal bonding surface, of the seed crystal holder, and the first supporting structure is configured to drive the seed crystal holder to rotate. The first supporting structure is arranged to drive the seed crystal holder in the crucible to rotate, so that the mass transfer rate is increased, and the crystal growth speed is increased; meanwhile, the rotation of the seed crystal support can also improve the radial solute distribution uniformity of the seed crystal bonding surface and improve the growth quality of the crystal.

The present invention relates to the technical field of pollutant treatment, in particular to an amine-fluorine bifunctional hydrogel adsorbent, and preparation and use thereof. The present invention provides a preparation method of an amine-fluorine bifunctional hydrogel adsorbent, which comprises the following steps: uniformly mixing a fluorine-containing alkene monomer, a quaternary ammonium salt alkene monomer, a traditional Chinese medicine residue cellulose dispersion liquid, N,N′-methylene bisacrylamide and ammonium persulfate, and sequentially carrying out heating reaction, deionized water swelling and drying to obtain the amine-fluorine bifunctional hydrogel adsorbent. According to the present invention, the quaternary ammonium salt alkene monomer is introduced as a hydrophilic monomer, and the fluorine-containing alkene monomer is introduced as a hydrophobic monomer, so that the amine-fluorine bifunctional hydrogel adsorbent has a hydrophilic amine and hydrophobic fluorine dual-network interpenetrating porous structure, and the structure enhances water transmission and the mass transfer rate of a per- nd polyfluoroalkyl substance.

The invention relates to a method for rapidly solving gasification and combustion of single-particle biomass coke, and belongs to the technical field of biomass thermochemical conversion simulation. In order to solve the problem that the reaction rate, the heating rate and the mass transfer process are overestimated due to the fact that a traditional zero-dimensional model neglects mass transfer and heat transfer resistance in particles, the difference between the zero-dimensional model and a one-dimensional model in the aspect of transfer behaviors in the particles is compared and analyzed through a system; a mass transfer rate correction factor (HM), a heat transfer rate correction factor (HT) and a reaction rate correction factor (HR) are introduced to construct a corrected zero-dimensional particle model. According to the model, on the basis that the calculation efficiency advantage of a zero-dimensional model is reserved, the prediction precision of the particle internal transfer effect and the influence of the particle internal transfer effect on the reaction process is remarkably improved. Besides, the method can be efficiently coupled with a computational fluid dynamics (CFD) method, an effective tool is provided for realizing high-precision and high-efficiency numerical simulation of the biomass gasification and combustion reactor, and a theoretical basis is laid for engineering amplification and operation optimization of the biomass gasification and combustion reactor.

The invention discloses a wastewater treatment system and method for catalytic wet oxidation, and the treatment system comprises a vortex bubble generator; the oxidation reactor is positioned at the downstream of the vortex bubble generator; the heater is positioned at the upstream of the vortex bubble generator; and a preheater located upstream of the heater. According to the treatment system disclosed by the invention, the vortex effect of the wastewater is enhanced under the dual effects of the flow guide slit and the flow guide spiral of the vortex bubble generator, and the micro-nano bubble generation efficiency is improved. In the catalytic wet oxidation reaction process, oxygen enters the oxidation reactor in the form of micro-nano bubbles, and compared with millimeter-scale bubbles in a traditional gas distribution mode, the retention time of the oxygen is prolonged, the specific surface area of the bubbles is large, the gas-liquid mass transfer rate is increased, the generation rate of free radicals is increased, and the catalytic wet oxidation reaction efficiency is improved. Meanwhile, oxygen enters the oxidation reactor in the form of micro-nano bubbles, so that the consumption of the oxygen is reduced while the reaction efficiency is improved.

The present application relates to the field of catalytic materials for atmospheric pollutant control and discloses a pulse current-enhanced MOF-based catalyst, a preparation method therefor and a use thereof. In the present application, the method comprises: dissolving a copper salt and polyvinylpyrrolidone in a mixed solution of DMF and ethanol, and then adding formic acid; dissolving Cu-TCPP in the mixed solution of DMF and ethanol; then mixing the solutions obtained in the steps above until the solutions are uniformly dispersed, and heating and drying the mixture to obtain PML-Cu; weighing PML-Cu and calcining same in an inert gas to obtain PML-CuNPs; and using a pulse current to treat the PML-CuNPs to obtain Pulse-PML-CuNPs. In the present method, an active center is generated in situ in a two-dimensional MOF-based material Cu-TCPP by means of a node metal in-situ reduction method, and a synthesized two-dimensional MOF-based electrocatalyst PML-CuNPs has a single atomic layer structure and can maximize mass transfer rate. By means of the pulse current method, the present application further changes the surface state of the active center, and changes the surface roughness and valence state of Cu nanoparticles, thereby enhancing the reaction efficiency of electroreduction of CO2 into a multi-carbon product.

The utility model relates to the field of water treatment equipment, in particular to a rotational flow aeration type Fenton device. The utility model discloses a rotational flow aeration type Fenton device which comprises a Fenton reaction tower body, a water inlet is formed in one side of the bottom of the Fenton reaction tower body, a water outlet is formed in the top of the other side of the Fenton reaction tower body, a water collecting area is arranged in the middle of the Fenton reaction tower body, an aeration pipe is arranged in the water collecting area, and a rotational flow aerator is arranged at one end of the aeration pipe. According to the utility model, gas enters from the bottom of the spiral-flow aerator and is mixed with sewage, and in the spiral-flow aerator, the mixture of the gas and the sewage is cut and crushed for multiple times in the high-speed rotation process to form a large number of ultramicro bubbles. By utilizing a rotational flow principle, bubbles and sewage are fully mixed, and the dissolution rate, the mass transfer rate and the oxygen utilization rate of oxygen are increased. And meanwhile, the rotational flow can promote the suspension and mixing of the sludge and prevent the sludge from precipitating. According to the spiral-flow aerator, the aeration energy consumption is reduced through efficient gas dispersion and low-resistance design.

The invention discloses a green and environment-friendly synthesis method for preparing a high-crystallinity mesoporous ZSM-5 molecular sieve and application thereof, and belongs to the technical field of catalysts and synthesis thereof. On the basis of a template-free synthesis scheme, a mother liquor waste liquid with a template is added as a seed crystal liquid to prepare a high-crystallinity ZSM-5 molecular sieve, and then the high-crystallinity mesoporous ZSM-5 molecular sieve is prepared through alkali treatment. The ZSM-5 molecular sieve prepared by the invention does not need to be roasted in the whole preparation process, is a green and environment-friendly synthesis route, and can effectively save the production cost and reduce the energy consumption. The molecular sieve has a rich pore structure and a larger specific surface area at the same time, oil and gas components can enter pores of the molecular sieve easily, the diffusion path is short, the mass transfer rate in the reaction process is higher, the generated product can be rapidly diffused out, and the conversion rate of the molecular sieve in the cyclohexene hydration reaction can be effectively improved.

This invention relates to the field of adsorption materials and discloses a lithium adsorption material, a method for manufacturing the same, and its use. The lithium adsorption material comprises a core and a shell coated on the surface of the core, wherein pores exist in the shell of the lithium adsorption material, and the average diameter of the pores, as measured by SEM electron microscopy, is 0.01 to 2.5 μm, the core of the lithium adsorption material contains finger-shaped pores, and in the cross-section of the lithium adsorption material, the longest average length of the finger-shaped pores, as measured by SEM electron microscopy, is 1 to 7 μm, and the shortest average length is 0.05 to 2.5 μm, and the thickness of the shell of the lithium adsorption material, as measured by SEM electron microscopy, is 1 to 550 μm. The lithium adsorption material having the above specific structure has a special structure in which the pores of the outer shell are small and the pores of the inner core are large, which can accelerate the mass transfer rate of water and salt. By using it when extracting lithium in a liquid environment, the adsorption capacity for lithium can be greatly improved.

The invention discloses a vinyl chloride-vinyl acetate copolymer paste resin and a production method thereof, the vinyl chloride-vinyl acetate copolymer paste resin comprises the following components in parts by weight: 75 to 96 parts of vinyl chloride monomer, 4 to 25 parts of vinyl acetate, 0.3 to 1.0 part of main emulsifier, 0.4 to 1.2 parts of auxiliary emulsifier, 0.02 to 0.10 part of initiator and 110 to 130 parts of pure water; the coating further comprises a chain extender. According to the invention, the supergravity device is adopted, the traditional emulsification method is changed, and the supergravity technology is introduced into the production of the vinyl chloride-vinyl acetate copolymer paste resin, so that the interphase mass transfer rate is improved by 1-3 orders of magnitude compared with that in the traditional tower, the micromixing and mass transfer processes are greatly enhanced, the emulsification time is greatly shortened, and the production efficiency is improved. The emulsification efficiency is greatly improved, and the production efficiency is improved; and the nucleation process can be carried out in a microscopic uniform environment, so that the nucleation process is controllable, the particle size distribution is narrowed, the particle size distribution is more uniform, the batch reproducibility is better, and the product quality is improved.

This application discloses a nano-tetragonal barium titanate and its process-enhanced continuous preparation method, belonging to the field of barium titanate preparation technology. The process-enhanced continuous preparation method for nano-tetragonal barium titanate includes the following steps: preparing a circulating mother liquor, a titanium tetrachloride acid hydrolysate, a barium chloride solution, and an ammonia solution; adding the titanium tetrachloride acid hydrolysate dropwise to the barium chloride solution to obtain a titanium-barium mixture; passing the titanium-barium mixture, the circulating mother liquor, and the ammonia solution into a microdroplet process-enhanced device for mixing and reaction; after heat preservation and aging, and solid-liquid separation, obtaining a mixed precipitate and a first filtrate; dissolving the mixed precipitate in a solvent, filtering to obtain barium oxalate tetrahydrate and a second filtrate; calcining the barium oxalate tetrahydrate to obtain nano-sized tetragonal barium titanate powder. By employing a microdroplet process-enhanced method, the titanium-barium mixture and the ammonia solution are dispersed into microdroplets smaller than 10 μm, enhancing the degree of material mixing, improving the mass transfer rate, and obtaining nano-barium titanate with small particle size and high purity.

The invention relates to the technical field of graded pore materials, in particular to a graded pore preparation method of a UTSA-280 material, the UTSA-280 material with a graded pore structure and application of the UTSA-280 material. The preparation method comprises the following steps: contacting a first dispersion liquid containing a calcium source and a first dispersing agent with a second dispersion liquid containing 3, 4-dihydroxy-3-cyclobutene-1, 2-diketone, alkali and a second dispersing agent, and reacting to obtain the UTSA-280 material with a hierarchical pore structure, wherein the reaction temperature is-10 DEG C to 15 DEG C. The UTSA-280 material provided by the invention has developed mesoporous and macroporous structures on the premise of retaining the original microporous structure, the mass transfer rate of adsorbate is remarkably improved, and the UTSA-280 material has good adsorption separation performance; when the UTSA-280 material is used for gas adsorption separation, the gas adsorption capacity is improved, and meanwhile, the separation factor is increased.

The application discloses a multistage gradient micro-nano bubble dissolved gas bioreactor for air protein production and belongs to the technical field of bioreactors. In view of the problems of low dissolution efficiency of hydrogen / oxygen mixed gas generated by electrolysis of water in a culture solution and limited gas-liquid mass transfer rate, a multistage Venturi micro-bubble generating system and a microporous ceramic gradient aeration disc are arranged in the reactor to work cooperatively to generate micro-nano bubbles with a particle size of 50 nm to 50 mu m, the residence time of the gas in the liquid phase is significantly prolonged, the hydrogen uptake rate of hydrogen-oxidizing bacteria is improved, and therefore the Solein protein yield is improved. The reactor comprises a vertical cylinder, a multistage Venturi system (throat pipe gradient contraction arrangement), a three-layer gradient pore size ceramic aeration disc (50-100 mu m / 10-50 mu m / 0.1-10 mu m) at the bottom, a gas distribution system, a circulating backflow system, and an air inlet buffer unit and an online monitoring control system connected with an electrolytic cell unit. The gas dissolution efficiency can reach more than 85%, the hydrogen uptake rate is increased by 30% to 50%, and the Solein protein yield is increased by 20% to 40%.

The invention relates to a hydrothermal carbon-based composite material for adsorbing bisphenol A endocrine disruptors as well as a preparation method and application of the hydrothermal carbon-based composite material. Comprising the following steps: mixing rice husk hydrothermal carbon and mesoporous silica foam according to a mass ratio of 1: (1-5) to obtain a composite carrier; the preparation method comprises the following steps: dissolving polyethyleneimine in a solvent according to a mass ratio of 1: (0.4-0.6), uniformly stirring to obtain an impregnation liquid, impregnating a composite carrier in the impregnation liquid, stirring, and evaporating the solvent to obtain a composite adsorbent; the preparation method of the hydrothermal carbon-based composite material for adsorbing the bisphenol A endocrine disrupter solves the problems that in the prior art, the specific surface area of single hydrothermal carbon is generally limited, the pore structure development is incomplete, and the adsorption capacity and the mass transfer rate of the single hydrothermal carbon are limited.

The invention relates to the technical field of heavy aromatics recovery materials, in particular to a hydrogen peroxide tail gas heavy aromatics selective recovery material and a preparation method thereof. A selective recovery material for heavy aromatics in hydrogen peroxide tail gas comprises adsorption particles of a double-aperture structure, the aperture of a first-level pore channel of each adsorption particle is 80-150 nm, and the aperture of a second-level pore channel of each adsorption particle is 20-50 nm. According to the adsorption particle with the double-aperture structure, the first-stage pore channel and the second-stage pore channel form a synergistic effect. The contradiction between the mass transfer rate and the adsorption capacity is solved, the first-stage pore channel accelerates heavy aromatic molecules to reach adsorption sites, and the second-stage pore channel guarantees the adsorption capacity in unit volume, so that the adsorption material can quickly respond in hydrogen peroxide tail gas treatment, and can realize high-capacity recovery; meanwhile, the connectivity of the double-aperture structure also provides a reasonable space for subsequent active component loading, and a structural foundation is laid for improving the overall performance of the material.

An apparatus for a rotating packed bed reactor (RPB) that may be used to increase the mass-transfer rate between materials, such as a gas and a liquid, through the RPB. The RPB includes a housing, a motor, and a rotor disposed within the housing and operatively connected with the motor. The rotor includes a permeable packing configured to facilitate contact between a liquid and a gas passing through the permeable packing. The rotor includes a heat sink in contact with the permeable packing and configured to transfer heat away from the permeable packing. The heat sink includes a heat rate transfer gradient in a radially inward direction between an outer circumferential surface of the permeable packing and a central axis of the permeable packing.

The invention provides a method and a device for predicting full-core dirt deposition based on a porous medium model. The method comprises the following steps: S1, modeling a pressurized water reactor core into a porous medium model, and carrying out regularization coarse mesh division; s2, solving the porous medium model based on the reactor core power distribution obtained by the previous iteration step, and obtaining the flow field and phase field distribution under the current iteration step; s3, calculating the surface temperature of the fuel rod cladding based on the reactor core power distribution and the flow field and phase field distribution; s4, on the basis of the cladding surface temperature and the local thermal parameters, the phase change mass transfer rate is calculated through a boiling phase change rate model; s5, on the basis of the phase change mass transfer rate, calculating the dirt deposition rate by using a deposition model based on total mass balance; s6, calculating the deposition mass of the dirt and the mass of the boron compound according to the deposition rate of the dirt; and S7, taking the dirt deposition mass and the boron compound mass as input, and carrying out neutronics calculation to obtain updated reactor core power distribution.

The invention relates to the field of gas breathing circulation regeneration, and discloses a gas breathing circulation system based on bionic half gills and an underwater respirator, the gas breathing circulation system comprises a respirator, the respirator is used for breathing interaction of a user; the bionic half gill is internally provided with a permeable diaphragm for air-water exchange; the respirator and the bionic half gill are connected in series through a connecting pipeline to form a gas circulation loop; based on the characteristic that the solubility and the mass transfer rate of carbon dioxide in water are far higher than those of oxygen, the scheme realizes that carbon dioxide is efficiently transferred only by a physical diaphragm without a chemical adsorbent, so that not only is the chemical risk thoroughly eliminated, but also the utilization rate of oxygen is increased by several times by recycling residual oxygen in exhaled gas; and finally, the underwater operation time is remarkably prolonged under the same oxygen carrying amount, meanwhile, the breathing comfort is guaranteed through the gas adjusting cavity, intelligent regulation and control of gas components are achieved through the exhaust port, and the system has safety, high efficiency and engineering feasibility.

The invention belongs to the technical field of copper-based catalytic materials and water treatment, and particularly relates to a solar thermal field-electro-catalysis synergistic copper-based catalytic material for groundwater pollution remediation, a preparation method, a water treatment device and application. According to the copper-based catalytic material, the high catalytic activity of copper single atoms, the plasmon resonance effect of metal clusters and the excellent H2O activation capacity of a CN substrate are utilized, the photothermal effect is generated through optical excitation, the mass transfer rate of H2O to the substrate is remarkably increased, the dissociation reaction of H2O is promoted, protons and active hydrogen are efficiently generated, and electrochemical hydrodehalogenation and NO3-electrocatalytic reduction are driven. The process effectively solves the problem of reaction kinetics limitation caused by low proton transfer efficiency in the traditional process, greatly accelerates proton transfer and optimizes electron-proton cooperative transfer efficiency, and provides a new way for research and development of groundwater organic-inorganic pollution cooperative treatment and sustainable development technologies. The method has the advantages of remarkable environment and energy conversion.

The invention discloses a synchronous in-situ modification method for multi-section temperature control vacuum solid phase preparation of silicon monoxide, and belongs to the technical field of silicon monoxide preparation. According to the method, the waste silicon powder and silicon dioxide precast blocks are subjected to segmented heating in a heating area, so that the waste silicon powder is fully activated, solid-phase reaction between silicon and silicon dioxide is promoted to be fully carried out, and silicon monoxide gas is generated; the silicon monoxide enters a volatilization area, and the precise control of the volatilization rate of the silicon monoxide gas is realized by adjusting the temperature in sections, so that the conversion efficiency and the mass transfer rate of reactants are improved; then the silicon monoxide enters a heat preservation area, crystalline silicon phases in the silicon monoxide are uniformly dispersed and distributed through segmented temperature regulation and control, in-situ modification reaction is synchronously carried out, then the silicon monoxide negative electrode material with a uniform structure and excellent performance is obtained, the capacity of the silicon monoxide negative electrode material is still 1000 mAh / g after the silicon monoxide negative electrode material is circulated for 200 circles under the current of 0.5 A.g <-1 >, and the capacity of the silicon monoxide negative electrode material is not larger than 1000 mAh / g. And a feasible development direction is provided for subsequent industrial application of silicon monoxide in the field of lithium ion battery negative electrode materials.