1955 results about "Mass transfer" patented technology

The invention provides a multi-source data fusion modeling method and system in an aeration process, and is applied to the field of intelligent aeration control in sewage treatment. The method comprises the steps that multi-source time sequence data such as dissolved oxygen, turbidity, flow, temperature, power and pool bottom pressure pulsation signals are collected, dissolved oxygen response lag is calculated through cross-correlation analysis with power change as the reference, time sequence alignment is carried out, and a dissolved oxygen reference interval is predicted by utilizing calibration data in combination with a physical constraint LSTM model; performing spectral analysis on the pressure pulsation signal to extract a gas-liquid coupling characteristic value, and generating a cooperative regulation instruction of the frequency of the blower and the rotating speed of the stirrer based on the information; by means of the scheme, control oscillation caused by lag of the dissolved oxygen sensor can be effectively overcome, online monitoring of bubble form distribution is achieved, the gas-liquid mass transfer efficiency is improved, invalid aeration is avoided, and system energy consumption is remarkably reduced on the premise that stable effluent quality is guaranteed.

The invention discloses a dynamic intelligent control method and system for improving the efficiency of a rectifying tower, particularly relates to the technical field of chemical process control, and is used for solving the technical defect that an operation variable is mismatched with a physical state due to the fact that an existing distributed control system cannot recognize a hidden degradation state of equipment. The method comprises the following steps: acquiring temperature gradient distribution of each tower plate of a rectifying tower, thermal load of a reboiler and tower top condensation load parameters in real time, calculating a mass transfer efficiency offset by combining the temperature gradient distribution to generate a scaling trend index, and synchronously calculating a local entropy yield based on the thermal load and the condensation load to generate a thermodynamic irreversibility index. When the double indexes exceed a preset threshold value, it is judged that a recessive degradation state is entered, then a backflow ratio correction coefficient is reversely derived through a dynamic correlation model, and the correction coefficient is input into a distributed control system to dynamically adjust backflow ratio operation parameters; the product purity is maintained, the tower plate scaling process is obviously delayed, and long-term efficient operation of the rectifying tower is guaranteed.

The invention relates to the technical field of hydrogen production, in particular to a bipolar plate runner structure-mass transfer efficiency parameter simulation optimization method. Comprising the steps that a flow channel structure is designed, specifically, a bipolar plate flow channel is constructed through a fractal tree-shaped network topological structure, the flow channel is composed of multiple stages of branch channels, the section size of each stage of branch channel is decreased progressively according to a self-similarity proportion, and a three-dimensional flow channel network with fractal dimensions is formed; multi-physics field coupling modeling: establishing a multi-physics field coupling model including fluid flow, electrochemical reaction and heat and mass transfer based on computational fluid mechanics and a finite element method, wherein the model considers a turbulence effect in a flow channel, interface impedance of a porous medium diffusion layer and reaction kinetic parameters at the same time; parameter sensitivity analysis: screening key parameters influencing mass transfer efficiency through orthogonal test design, including flow channel fractal dimension, branch angle, porosity and surface wettability parameters, and constructing a parameter response curved surface; the flow channel structure of the bipolar plate can be accurately optimized, and the mass transfer efficiency is effectively improved.

The invention relates to the technical field of electrical cabinet monitoring, in particular to an electrical cabinet active anti-condensation method and system based on a condensation mechanism mathematical model. According to the invention, a mathematical model based on a condensation formation mechanism is constructed, and environmental meteorological parameters, station room environmental parameters, electrical cabinet internal microenvironment parameters and cable trench state parameters are monitored through a four-stage monitoring system; and fusing the multi-source heterogeneous data, inputting a condensation mechanism mathematical model to calculate a condensation risk index, and adopting a hierarchical response mechanism to cooperatively control an execution mechanism according to the obtained condensation risk index value to realize active defense of condensation. According to the method, the condensation phenomenon with the space-time dynamic characteristic is quantitatively described through a mass transfer and heat transfer coupling equation, a grading prevention and control strategy and a cooperative control algorithm are developed by calculating the condensation risk index, setting the threshold condition and judging the condensation formation risk level, the prevention and control intensity is dynamically adjusted according to the risk level, and the control accuracy is improved. And the risk response speed and the resource utilization efficiency under the complex working condition are obviously improved.

The invention discloses a high aspect ratio micropore pulse abrupt change current copper filling method and system, and belongs to the technical field of printed circuit board manufacturing, and the method comprises the steps: obtaining micropore structure parameters, and generating a gradient pulse abrupt change current waveform; monitoring a deposition thickness parameter of the orifice of the micropore in real time, and when the deposition thickness parameter exceeds a preset thickness threshold value, activating the reverse peak clipping pulse group; generating a resonant composite sound field in the electroplating bath; detecting the concentration distribution of the additive in the micropores in real time, and generating a dynamic adjusting instruction according to the concentration distribution of the additive; the independent injection rate of the accelerator and the inhibitor is controlled according to the dynamic adjusting instruction; and based on the gradient pulse abrupt change current waveform, the resonant type composite sound field and the dynamic adjusting instruction, the copper filling process is executed till the target deposition parameters are achieved. According to the method, a multi-field coupling mechanism of gradient pulse dynamic peak clipping, composite sound field synergistic mass transfer and additive concentration real-time regulation and control is adopted, and defect-free high-reliability copper filling can be achieved.

The invention discloses a zeolite adsorption and desorption integrated treatment system, and particularly relates to the field of zeolite separation treatment, and the zeolite adsorption and desorption integrated treatment system comprises a process sensing module, a dynamic partition control module, a global optimization control module and a cooling regeneration module. According to the zeolite adsorption and desorption integrated treatment system, the problem of blind operation in the traditional technology is solved through the process sensing module, a data basis is provided for dynamic partition, the intelligent monitoring level is improved, and the performance of an adsorbent is fully exerted; the problem of non-uniform heat and mass transfer of a bed layer is effectively solved through the dynamic partition control module, the desorption heat utilization efficiency is improved, and meanwhile, the service life of an adsorbent is prolonged; a dynamic optimization function is constructed through the global optimization control module, energy consumption, solvent recovery income and stability are comprehensively considered, self-adaptive adjustment of operation parameters is achieved, the energy consumption is reduced while the processing efficiency is guaranteed, and the environmental benefits are remarkably improved.

The invention relates to the field of microfluid chemical synthesis, and discloses a method for preparing gold nanoparticles based on two-phase flow microfluid control. The method comprises the following steps: 1) converging a gold precursor water phase, a reducing agent water phase and an organic phase in a micro-fluidic chip at 0-25 DEG C to form water-in-oil liquid drops; (2) conveying the fluid to a mixing area channel of a micro-fluidic chip, and carrying out instantaneous nucleation reaction to form a gold nanoparticle prototype; 3) conveying the fluid into a capillary reactor, and further nucleating, growing and curing the gold nanoparticle prototype; and (4) the fluid is subjected to phase splitting, and a gold nanoparticle solution is obtained. A three-in-one micro-fluidic chip is adopted, process parameters are optimized, and a gold precursor and a reducing agent are wrapped in an organic phase before reaction to form water-in-oil liquid drops, so that on one hand, the situation of adsorption and scaling of the inner wall of a channel can be avoided, and on the other hand, the heat and mass transfer efficiency of a material can be improved through the generated liquid drops; and the uniformity of a reaction nucleation environment is ensured.

The invention relates to the technical field of sensors, and discloses a detection and management method and system for purification equipment. The method comprises the following steps: carrying out three-phase coupling dynamic modeling on a gas phase flow state, a particle phase movement track and a sensor phase interface characteristic in the purification equipment to obtain a gas mass transfer characteristic parameter; performing response characteristic analysis on a real-time detection signal of a sensor array in the purification equipment to obtain a sensor calibration compensation parameter; based on the sensor calibration compensation parameters and the gas mass transfer characteristic parameters, deposition kinetics analysis of pollutants on the surface of the sensor is carried out, and equipment operation state evaluation data are obtained; and performing spatial layout optimization on the sensor array according to the equipment operation state evaluation data and the gas flow consistency constraint condition to obtain an optimal layout scheme and generate a staged adaptive management control instruction. According to the invention, self-adaptive adjustment and intelligent switching of the sensor management strategy are realized, and the detection performance and reliability of the purification equipment sensor system are significantly improved.

The invention discloses a desulfurizing tower and a desulfurizing method based on enhanced absorption of flat sheet membrane internals. The desulfurizing tower comprises a desulfurizing tower body, and a liquid distributor, the flat sheet membrane internals and fractal internals which are sequentially arranged in the desulfurizing tower body from top to bottom, according to the invention, high-concentration sulfur-containing gas is subjected to rapid pre-desulfurization at the tower bottom by utilizing the high turbulence characteristic of the fractal internals, so that the sulfide concentration can be instantly reduced, and the gas flow distribution is optimized; and the pre-desulfurized gas then enters a high-efficiency fine desulfurization area formed by the flat sheet membrane internals. According to the flat sheet membrane internal part, a plurality of vertically arranged flat sheets are utilized to form a fixed gas flowing channel, so that transverse movement of gas molecules is limited, and gas distribution is more uniform. And meanwhile, a layer of uniform and continuous absorbent liquid film is formed on the surface of the flat plate, so that the gas-liquid contact area is remarkably increased, and high efficiency and low energy consumption are achieved through full countercurrent contact and efficient gas-liquid mass transfer of gas and the absorbent liquid film under extremely low pressure drop.

The invention relates to the technical field of rare earth extraction devices, and discloses rare earth extraction equipment with a microencapsulation auxiliary structure, the rare earth extraction equipment comprises an extraction tower, the extraction tower is sequentially provided with a tower cover, an upper filler part, a middle filler part, a lower filler part and a heavy phase collector from top to bottom, the internal structures of the upper filler part, the middle filler part and the lower filler part are the same, and the heavy phase collector is arranged in the tower cover. Separators are arranged in the middles of the three, a filler area for increasing the contact area of two-phase liquid and prolonging the contact time of the two-phase liquid is arranged below the separators, a perforated plate for bearing the filler area is arranged below the filler area, and an auxiliary area for improving extraction selectivity and efficiency is arranged above the separators. According to the separator disclosed by the invention, the microcapsules and the filler are separately arranged, meanwhile, the microcapsules can continuously move in a fluid in a suspension manner, and the contact between the microcapsules and the liquid phase is dynamic and continuously changed, so that the microcapsules can be in contact with new rare earth ions to be extracted and an extracting agent in time, and a mass transfer interface is continuously updated, so that the mass transfer process is more efficient.

The invention provides an industrial product quality inspection model building method, a medium and a system, and belongs to the technical field of computer models.The industrial product quality inspection model building method comprises the steps that firstly, multi-source data including process parameters, visual features, thermal imaging features and the like are obtained, and the multi-source data are subjected to data cleaning, grouping sorting and feature normalization processing; and constructing a quality data vector. And then calculating a batch quality data curve and an intra-batch interaction index based on the vector, and modeling through a negative correlation coupling neural network. The network comprises two core coupling equation sets which are responsible for feature extraction fusion and mass transfer effect analysis respectively, and effective decoupling and fusion of information are achieved through a shared feature layer and negative correlation constraints. And finally, through training and verification, a quality inspection model capable of accurately quantifying the relevance of the quality characteristics of the products in the batches is constructed, and the technical problem that the relevance and the transfer effect of the quality characteristics of the adjacent products in the industrial product batches are difficult to accurately quantify and predict is solved.

The invention relates to a combined truncated cone type gas-liquid redistributor. The combined truncated cone type gas-liquid redistributor comprises a conical wall and a connecting bottom plate. Theconnecting bottom plate is fixedly arranged at the bottom of the conical wall, and is provided with a plurality of strip-shaped folding plates; the strip-shaped folding plates are of inverted-V structures; a plurality of air holes are formed at equal intervals in both sides of each strip-shaped folding plate; a stop plate is fixedly arranged on the lateral side of the strip-shaped folding plate above each air hole, and an angle is formed between each stop plate and the lateral side of the corresponding strip-shaped folding plate; the angles between the stop plates and the lateral sides of thestrip-shaped folding plates are proportional to the distances from the stop plates to the center of the connecting bottom plate. The combined truncated cone type gas-liquid redistributor has the advantages that the strip-shaped folding plates and the stop plates are adopted to achieve a good distribution effect of washing liquid, and accordingly, the area and time of contact between gases and liquid can be increased and prolonged; the included angles between the stop plates and the lateral sides of the strip-shaped folding plates are proportional to the distances from the stop plates to the center of the connecting bottom plate, so that the differences among the flowing speeds of gases from each air hole are small, the gas distribution effect is good, poor gas-liquid distribution in a packing tower is reduced, and the gas-liquid mass transfer efficiency is improved.

The invention discloses a bipolar plate structure optimization method and system based on flow field data analysis, and relates to the technical field of fuel cells. The method comprises the following steps: establishing a parameterized bipolar plate runner geometric solid model; performing compression deformation simulation of a gas diffusion layer on the bipolar plate flow channel geometric solid model to obtain physical field data of the gas diffusion layer, and calculating a porosity distribution field and a local mass transfer impedance coefficient field based on the physical field data; based on the porosity distribution field and the local mass transfer impedance coefficient field, multi-physics field coupling simulation is carried out, and a local performance contribution degree field is obtained; constructing a comprehensive loss function according to the local mass transfer impedance coefficient field and the local performance contribution degree field; and with the purpose of minimizing the comprehensive loss function, iterative optimization is carried out on the design variables through an optimization algorithm until convergence conditions are met, and an optimal design variable combination is output. Through parametric modeling, multi-physics field coupling simulation and comprehensive loss function evaluation, efficient optimization of the bipolar plate design is realized.

The invention discloses a system for mineralizing carbon dioxide by micro-nano bubble reinforced base solid waste and an application method.The system for mineralizing carbon dioxide by micro-nano bubble reinforced base solid waste comprises a micro-nano bubble generation and injection unit, a mineralization reaction unit and a circulating water treatment unit, the micro-nano bubble generation and injection unit comprises a micro-nano bubble generation device, a gas supply pipeline and a water supply pipeline, the mineralization reaction unit comprises a mineralization reactor, and a quartz sand filling layer and a nylon screen are arranged at the bottom of the mineralization reactor. Through the multi-unit integrated coupling design, the micro-nano bubbles are creatively utilized to strengthen the gas-liquid-solid three-phase synergistic reaction process, the column type filling structure and the sectional type reaction mechanism are combined, the carbon dioxide mass transfer efficiency and the mineralization reaction rate are effectively improved, and the system has the advantages of being high in system adaptability, stable in continuous operation, flexible in module deployment and the like; the method is suitable for efficient treatment of alkaline solid waste and carbon dioxide sequestration collaborative scenes, and has good engineering popularization prospects and resource utilization value.

The invention discloses a method and a system for designing a fluid flow channel of a calcium-based thermochemical heat storage fixed bed reactor based on topological optimization and a storage medium. The method comprises the following steps: S1, constructing a geometric model of a design domain of the reactor; s2, constructing an objective function and establishing a two-dimensional topological optimization mathematical model based on a control equation of conjugate heat transfer and fluid flow; s3, solving the mathematical model to obtain an optimal fluid flow channel two-dimensional topological structure; s4, performing geometric reconstruction on the two-dimensional topological structure obtained in the step S3, converting the two-dimensional topological structure into a Bezier curve, and integrating the Bezier curve into a geometric model corresponding to the original design domain; s5, establishing a finite element model of the reactor; s6, temperature field and pressure field distribution is calculated based on CFD simulation, whether the heat storage performance target is met or not is judged, and if not, corresponding control parameters are adjusted to return to the step S3 until the heat storage performance target is met; the device can optimize the heat transfer and mass transfer performance of the reactor at the same time, and the optimization design efficiency is high.

The invention belongs to the technical field of solid hydrogen storage, and provides a solid alloy hydrogen storage device with high heat transfer performance and application thereof, and is characterized in that the device comprises a hydrogen storage container, a hydrogen storage alloy and a heat exchange structure assembly; a fin structure and a layering partition plate are arranged in the hydrogen storage container, by optimizing the layering partition plate and the fin structure, displacement and agglomeration of hydrogen storage alloy in a moving or vibrating environment are effectively prevented, the mass transfer and heat transfer performance in the hydrogen storage tank is remarkably improved, hydrogen and heat can be rapidly transferred to the hydrogen storage alloy, and the hydrogen storage effect is improved. Therefore, the hydrogen absorption and desorption efficiency is improved. The method is suitable for AB2 type alloys, AB5 type alloys, BCC type alloys, superlattice hydrogen storage alloys and the like, the hydrogen absorption and desorption process can be efficiently completed at a certain temperature and pressure, and the high efficiency and stability of the hydrogen absorption and desorption process are ensured. And the catalyst can be widely applied to various scenes such as traffic, hydrogen refueling stations, industrial processes and hydrogen energy storage.

The invention relates to the technical field of industrial control, and discloses a real-time dynamic tuning system for a microwave drying process, which is characterized in that temperature distribution, microwave power intensity, humidity gradient and material deformation parameters in a drying cavity are acquired in real time, and time-space alignment and noise suppression are carried out on data of a multi-source sensor based on a Kalman filtering algorithm; generating a drying state matrix, generating a three-dimensional regulation and control instruction containing microwave emission frequency, power partition and drying time according to the drying state matrix by adopting a mixed algorithm of model predictive control and fuzzy logic, and taking the deviation between a final moisture content detection value of the material and a model predictive value as a loss function through an online error back propagation model. The weight coefficient of the microwave-thermal-mass transfer coupling model is dynamically corrected, the microwave energy ratio is optimized based on the improved particle swarm optimization, and the three-dimensional gradient field intensity distribution matched with the material morphology is generated according to the three-dimensional regulation and control instruction, so that the efficiency of the microwave drying process during real-time dynamic regulation and optimization is improved.

The invention discloses a CO2-oil near-miscible phase pressure acquisition system and method based on convective mixing, and belongs to the field of CO2 oil displacement. The system comprises a high-temperature and high-pressure reaction kettle, a temperature and pressure control system, a gas injection module, a liquid injection module and a monitoring control module. According to the method, the oil phase and the carbon dioxide are induced to form a convective mixing effect by dynamically regulating and controlling the injection flow rate, and when no interface of the system reaches a mutual convective mass transfer state, the system pressure corresponding to a phase interface disappearance critical point is directly recorded as a near-miscible-phase pressure value. The near-miscible pressure value obtained by the method is high in accuracy, the single test time is shortened to 1 hour, the test period is remarkably shortened, near-miscible pressure parameters under different temperature conditions can be measured in a short time, the CO2-oil near-miscible pressure can be measured by simulating a high-temperature and high-pressure environment of a stratum, and the method is suitable for popularization and application. And high-timeliness key phase state data support is provided for unconventional oil and gas reservoir development.

The present application provides a dynamics analysis method for an ammonia combustion refrigeration system in large park cooling. The method comprises: on the basis of a geometric structure of an ammonia combustion chamber and a fuel supply amount, calculating the heat generated by ammonia combustion and analyzing the heat transfer mode between the combustion chamber and a desorption tower, the heat transfer mode comprising direct contact type heat transfer and partition type heat transfer, and simulating the heat transfer process to obtain and draw the heat flux distribution of the tower wall surface; on the basis of the flow state and a relationship curve between the pressure drop and the flow velocity, analyzing the desorption process of a refrigerant in a solution, and on the basis of the concentration of the solution, a boiling point of the refrigerant, and the vapor pressure, calculating local desorption rates at different positions in the desorption tower and the refrigerant vapor generation amount; and on the basis of the heat flux distribution, calculating the temperature distribution of the solution, and analyzing the heat transfer and mass transfer processes in the desorption tower to obtain a local heat transfer coefficient and the mass transfer efficiency distribution of the surface of a filler.

The invention provides a concentric circle circulating flow sewage treatment system based on electric strengthening and a control method. The system comprises a concentric circle circulating flow reactor, a microbial electric strengthening unit and an AI driving control unit, a concentric circle double-ring gallery and multi-point water inlet and multi-point backflow achieve a complete mixed flow type flow state of transverse plug flow and longitudinal circulation flow, the concentric circle circulation flow state is coupled with the microbial electric strengthening unit to form gas-liquid-solid-electricity four-phase turbulent flow to break a mass transfer boundary layer, and the contact efficiency and the mass transfer efficiency of sewage and microorganisms are strengthened. The anodes and the cathodes of concentric circle structures are closely arranged to generate electric field gradient to regulate and control spatial distribution of microbial communities, dynamic polarity switching is achieved through an AI system, the reactor is endowed with the self-adaptive capacity for coping with water quality fluctuation, and the sewage carbon, nitrogen and phosphorus removal treatment efficiency is improved in a breakthrough mode.

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 for constructing a multicellular living body material by adopting a droplet bioreactor, which belongs to the crossing field of biological materials and microbial engineering, and comprises the following steps: (1) resuspending different cells in different polymer solutions to prepare degradable or phase-separable hydrogel particles containing cells; (2) dispersing the hydrogel particles in a cross-linkable hydrogel matrix to form a composite hydrogel; and (3) curing the composite hydrogel, and then carrying out degradation treatment to obtain the liquid cavity structure multicellular system bioreactor with spatial partition and dynamic interaction characteristics. According to the invention, ordered distribution and metabolism synergy of different microorganisms in space can be realized, controllable degradability and excellent mass transfer performance are realized, bacterial slow release and metabolite exchange can be maintained, and the method is suitable for long-term stable operation of a continuous flow reactor. The method has wide application prospects in the fields of green biological manufacturing, renewable energy source production, environmental restoration, biomedical engineering and the like.

The invention discloses a microclimate regulation control method and system for cellaring of salty wine in a salt cavern, and relates to the technical field of environmental control, and the technical scheme is characterized in that non-intrusive accurate inversion of the concentration in a tank is realized by constructing a mass transfer kinetic model and combining real-time environmental parameters collected by a sensor and the real-time concentration outside the tank of flavor substances; based on historical cellaring data, a concentration change reference curve is obtained through data fitting, a scientific quantitative basis is provided for microenvironment regulation and control, a cellaring period is divided according to the change trend of environmental parameters in the concentration change reference curve, and the cellaring time is shortened by accurately quantifying the material change rule of different cellaring periods; meanwhile, a feed-forward-feedback composite regulation and control mechanism is introduced, a feed-forward compensation regulation and control quantity and a PID regulation and control quantity are fused, the strong coupling relation between the temperature and humidity in the salt cavern and the gas concentration is separated, multivariable coupling interference in the salt cavern environment is effectively eliminated, and precise closed-loop control over the salt cavern microclimate is achieved.

The utility model relates to the technical field of gas-liquid redistributors, and discloses a gas-liquid redistributor for a small packed tower, which comprises a distribution plate, gas uniform distribution holes and liquid uniform distribution holes are arranged on the distribution plate and are arranged on different circles taking the center of the distribution plate as the center, and the gas uniform distribution holes and the liquid uniform distribution holes are arranged on each circle. The gas uniform distribution holes and the liquid uniform distribution holes are alternately distributed, the distances between two adjacent circles are equal, and the liquid distribution holes of the two adjacent circles are distributed in a staggered manner; a gas distribution pipe and a liquid distribution pipe are respectively arranged above and below the distribution disc, the gas distribution pipe is connected with the gas uniform distribution holes, and the liquid distribution pipe is connected with the liquid uniform distribution holes. The gas-liquid redistributor disclosed by the utility model is suitable for being used in a small-sized gas-liquid mass transfer packed tower, has a simple structure, cuts a gas phase into smaller gas flows, uniformly distributes liquid into smaller liquid drops, and increases the contact area between the liquid and the gas, thereby improving the mass transfer efficiency.

The invention provides a carbon dioxide trapping absorbent and a trapping absorption method. The carbon dioxide trapping absorbent has high main absorbent concentration, the formula of the main absorbent and the viscosity of the carbon dioxide trapping absorbent are limited to be smaller than or equal to 20 cp, the mass transfer and trapping absorption capacity of carbon dioxide is improved, meanwhile, the trapping absorption capacity of carbon dioxide is further improved by limiting the formula of the accelerant, and the carbon dioxide trapping absorption capacity is improved. And more importantly, the regeneration effect of the absorbent can be improved, and the regeneration energy consumption can be obviously reduced. In addition, the absorbent is friendly to equipment, a protective film is formed on the surface of the equipment, and equipment corrosion is avoided.

The invention discloses a sintered neodymium-iron-boron magnet performance prediction method based on data driving, which is used for gradually capturing the influence of process parameters in the production process and gradually predicting the middle and final magnet performance. In the first stage, technological parameters are used as input, the characteristics of powder are predicted through the combined prediction model, and intermediate output characteristics of the first stage are obtained. And in the second stage, training and prediction are carried out again in combination with the process parameters and the powder performance parameters obtained through prediction in the first stage, so that the final performance of the magnet is obtained. Through the multi-stage mode, the model can gradually accumulate and extract the influence of each process link, which is beneficial to reveal the complex mass transfer mechanism of the process. The stage training not only improves the prediction precision, but also enhances the interpretability of the model, so that the key process links can be better identified in the production process, thereby improving the consistency of the product quality and the optimization efficiency of the process flow.

The invention relates to the technical field of preparation of nano catalytic materials, in particular to a preparation method of hierarchical pore channel mesoporous carbon loaded metal nanoparticles. According to the invention, biomass diatomite is used as a template to construct a vertically through macroporous channel, a block copolymer is introduced to form an ordered mesoporous structure, and a pore-foaming agent is added to generate a macro-pore network in a pyrolysis process, so that a macro-pore-mesoporous-micropore three-level communicated carbon-based skeleton is realized; and a bimetallic component is loaded on the hierarchical porous mesoporous carbon in a gradient confinement manner. The material disclosed by the invention has the advantages of fast mass transfer of macropores, stable nanoparticles of mesoporous confinement and efficient catalysis of monatomic sites, and can efficiently catalyze and degrade various wastewater organic pollutants in a wide pH range.

The invention discloses a landfill leachate pretreatment process, and belongs to the technical field of landfill leachate treatment.The landfill leachate pretreatment process comprises the following steps of S1, pre-oxidation and catalytic chain breaking, S2, dual-alkali calcium and magnesium removal, S3, magnetic flocculation and adsorption, S4, dynamic membrane filtration unit treatment and S5, control system integration. The mass transfer efficiency of an oxidizing agent and pollutants is enhanced, the dosing of the agent is dynamically regulated and controlled by combining an ORP (oxidation reduction potential) meter, so that parameters such as potential, pH value and temperature are kept in an optimal interval, the oxidation reaction is ensured to be fully carried out, macromolecular organic matters are efficiently decomposed, and a foundation is laid for subsequent treatment; the collision efficiency of calcium and magnesium ions is improved through the water distributor and the granular sludge bed, and meanwhile, the chemical dosage is dynamically controlled and the pH value is accurately adjusted through the sensor, so that the calcium and magnesium ions are efficiently removed, the chemical waste is reduced, and the operation cost is reduced.

The invention provides a flow field analysis method capable of optimizing an anti-blocking adjusting stop valve structure, and belongs to the technical field of stop valves, and the method comprises the following steps: S1, based on an energy minimum multi-scale model, dividing each phase medium into a dense phase and a dilute phase through calculation of each phase distribution in each region in a valve; s2, correcting an inter-phase momentum transfer resistance relationship of the liquid-solid two-phase quasi-fluid model, and establishing a mass transfer and drag action relationship between a dilute phase and a dense phase to form a first-stage model; s3, performing medium serialization on the physical image of the first-stage model to form a single dilute phase and a single concentrated phase, establishing a mass exchange and drag action relationship between the dilute phase and the concentrated phase, ensuring that the concentrated phase and the dilute phase meet mass conservation, and constructing a second-stage model; according to the method, the defects of homogeneous hypothesis are corrected through the multi-stage model, the influence of particle aggregation on flow can be reflected, liquid-solid two-phase flow simulation is closer to the actual working condition, and the prediction error of the erosion risk area is greatly reduced.

The present application provides an anti-clogging type precipitation tower plate, comprising a tower plate, the tower plate comprising a liquid receiving area, a liquid downfalling area, and a vapor phase channel, the liquid downfalling area is provided with an overflow weir near the vapor phase channel side, a liquid downfalling hole is provided in the liquid downfalling area, and a baffle is provided at the lower part of the liquid downfalling hole; in the present application, the liquid phase passes through the baffle and the vapor phase channel in the tower, undergoes multiple baffles and falling processes, so that the mass transfer and heat transfer effects are enhanced, and at the same time, the flushing effect of the liquid phase also helps to prevent solid accumulation and clogging on the tower plate, improves the mass transfer efficiency and operation effect, and can realize the discharge of solid products from the tower plate to the tower kettle and finally out of the system; and the tower plate of the present application is provided with independent vapor phase and liquid phase channels, and effective vapor-liquid mass transfer is realized between the tower plates, thereby fully avoiding the problem of vapor phase channel clogging, and because the liquid flow moves in a zigzag line in the tower, the residence time of the liquid phase in the tower is extended, so that the raw materials have a longer decomposition or polymerization time.