716results about How to "Improve mass transfer efficiency" patented technology

The invention discloses a jet aerator with low energy consumption and high oxygenation efficiency. The jet aerator comprises a Venturi tube and a quick-pass rhombic tube which are of a split structure, multi-rod supports are installed on the inner wall faces of round pipes at the two ends of the venturi pipe and support tail hook bionic stirring blades, a double-end reverse screw is arranged in the venturi pipe, one end of a quick-pass rhombic pipe is connected with the venturi pipe, the other end of the quick-pass rhombic pipe extends into an air suction chamber, and the upper portion of the air suction chamber is connected with an air supply pipe. The end, away from the Venturi tube, of the air suction chamber is connected with a mixing cavity tube, the mixing cavity tube is connected with the front end of a throat tube, a divergent wing-like blade set and a special-shaped taper hole plate are arranged in the mixing cavity tube, and a grid tray scattering nozzle is arranged in the throat tube; compared with a circular pipeline, the quick-passing rhombic pipe can provide higher water conveying capacity; the gradual change spiral body design on the double-end reverse screw can generate vortexes and turbulent flows, the turbulent flow intensity of water flow is improved, the mixing and diffusion capacity of the water flow is improved, and therefore the oxygenation efficiency is improved.

The invention discloses a system and a method for degrading organic wastewater through cooperation of hydrodynamic cavitation and plasma. The system comprises a liquid storage tank, an aeration device and a plasma rotary cavitation reactor, the plasma rotary cavitation reactor comprises a reactor shell, and the reactor shell is provided with an organic wastewater inlet and an organic wastewater outlet; the aeration device is communicated with the organic wastewater inlet; and the liquid storage tank is communicated with the aeration device. The plasma discharge technology and the hydrodynamic cavitation technology are fused, active substances such as ozone and hydroxyl radicals are generated through dielectric barrier plasma discharge, degradation of organic wastewater is enhanced in cooperation with the hydrodynamic cavitation technology, and the degradation effect of the wastewater is improved; an upper row of teeth and a lower row of teeth with opposite tooth inclination angles are arranged on the rotor, so that fluid is triggered to circularly flow between a cavitation area and a discharge area, and the gas-liquid mass transfer efficiency is further improved; by arranging the upper jet flow cavitation channel and the lower jet flow cavitation channel which are variable in inner diameter and opposite in direction, the pressure drop value when fluid flows through the channels is changed, and the cavitation effect is enhanced.

The present invention discloses a filler washing tower and a washing method, the filler washing tower is used for washing treatment of VOCs waste gas, and the filler washing tower comprises: a washing liquid pipe which is arranged at the axis position of the washing tower in a penetrating manner, vertically extends and is used for receiving a washing liquid from the outside of the tower; the washing liquid pipe is provided with a rotatable pipe section at the corresponding position of the filler layer; the spraying pipe assembly is composed of a plurality of spraying pipes with different lengths and is communicated with the rotatable pipe section, and a spraying opening of each spraying pipe is formed in the tail end of the pipe; the spraying pipes are arranged at intervals in the circumferential direction of the rotatable pipe section and are tangent to the rotatable pipe section; the spraying pipes with different lengths drive the rotatable pipe section to rotate through counter-acting force when spraying out the washing liquid, and annular partition covering of the washing liquid on the packing layer is formed. Rotation of the spraying pipe is achieved through spraying of washing liquid, and through annular partition covering of spraying, water saving can be achieved while the gas-liquid mass transfer efficiency is guaranteed, and external power consumption is not needed.

The invention relates to the field of fuel cells, in particular to a gas diffusion layer with good water management performance and a preparation method thereof. The gas diffusion layer comprises a substrate layer and a microporous layer, the substrate layer comprises a plurality of hydrophilic micro-channels penetrating through the substrate layer; on the basis of the response difference of hydrophilic macromolecules and polytetrafluoroethylene to the shearing rate in an aqueous solution system, an ordered hydrophilic microchannel is formed in the carbon paper by adjusting the suction filtration speed; under the high-humidity condition, the hydrophilic micro-channels are beneficial to guiding liquid water into the carbon paper and rapidly discharging the liquid water, the problem that water is flooded at the interface of the carbon paper and the microporous layer and in the carbon paper, which cannot be solved in the prior art, can be solved, and meanwhile, the hydrophobicity of a local area is enhanced to form a waterless area which is beneficial to guiding of reaction gas; under the low-humidity condition, the hydrophilic macromolecules of the hydrophilic microchannel can be combined with water more easily to maintain a wetting state, and can be used as a water storage layer to maintain the film wet so as to realize self-humidifying, so that the low-humidity performance of the battery is improved.

The invention relates to the field of environmental protection, and discloses a catalytic ozonation wastewater treatment device and method.The treatment device comprises a pretreatment unit and a catalytic reactor, the catalytic reactor is filled with a catalyst, the catalyst is cylindrical, through holes are formed in the catalyst, the specific surface area of the catalyst is 250-350 m < 2 > / g, the pore volume is 0.5-1.5 cm < 3 > / g, and the specific surface area of the catalyst is 200-300 m < 2 > / g. The catalyst comprises a catalytic carrier, an active component and an adsorption component, the catalytic carrier is a molecular sieve, the active component comprises one or more of oxides of Fe, Ru, Mn, Cu, Ni, Zn, Co, Ce and La, and the adsorption component comprises activated carbon. The refractory pollutants are gathered and effectively adsorbed into pores of the catalyst, so that the contact time of the adsorbed pollutants and ozone is greatly prolonged, the mass transfer efficiency between the adsorbed pollutants and the ozone is effectively improved, and the refractory pollutants adsorbed in the catalyst and wastewater are mineralized and decomposed.

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 wastewater degradation system and a wastewater degradation method based on cooperation of radial microchannel discharge and cavitation, and belongs to the technical field of organic wastewater treatment. The device comprises a waste liquid pool, a micro-channel discharge cavitation degradation device, an ozone generator, a Venturi tube and a collection pool, the Venturi tube is respectively communicated with the ozone generator, the waste liquid pool and a to-be-degraded wastewater inlet of the micro-channel discharge cavitation degradation device. A dielectric barrier discharge technology and a hydrodynamic cavitation technology are fused, a large number of active substances are generated in the inner and outer cavitation cavities through dielectric barrier discharge, a strong cavitation effect is generated around the rotor in cooperation with rotation of the cavitation rotor, and organic wastewater is degraded; by arranging the radial micro-channel discharge device, the discharge area is increased, the number of active substances such as ozone and hydroxyl radicals in gas and liquid phases is increased, and the inactivation loss of the active substances in the transportation process is reduced; and by arranging rotor cavitation teeth with opposite rotation directions, circular flow of a gas phase and a liquid phase is triggered, and the mass transfer efficiency is improved.

The invention provides a reaction system for synchronously generating ozone and hydrogen peroxide through salt-free electrolysis and an application method of the reaction system, and belongs to the technical field of electro-catalysis green synthesis. The integrated membrane electrode comprises a cathode mass transfer diffusion layer, a cathode catalyst layer, a proton exchange membrane, an anode catalyst layer and an anode mass transfer diffusion layer which are sequentially stacked, and an anode catalyst in the anode catalyst layer comprises nano tin antimony oxide and / or nano platinum black. And a cathode catalyst in the cathode catalyst layer comprises one or more of conductive carbon black, graphite, carbon nanotubes, graphene, acetylene black and activated carbon fibers. The integrated membrane electrode is large in reaction area and high in conversion efficiency, can effectively reduce mass transfer resistance, runs under high current density, and has quick response capability. The reaction system provided by the invention effectively strengthens the gas-liquid two-phase mass transfer of the cathode and the anode.

The invention discloses a method for preparing high-quality iron phosphate in a short process, and belongs to the field of battery material manufacturing. The method comprises the following steps: dissolving iron powder with phosphoric acid to prepare a ferrous phosphate solution, then transferring the solution into a pressurized reaction kettle, blowing high-speed oxygen to oxidize ferrous phosphate into ferric phosphate, adding ammonia water to control the pH value to be 1.5-2.0, and carrying out solid-liquid separation to obtain the water-containing amorphous ferric phosphate, after washing is finished, a water-containing material is fed into a muffle furnace to be subjected to stepped calcination, dehydration and crystal transformation are completed, and the alpha monoclinic system iron phosphate is obtained. The method provided by the invention is short in process flow and low in energy consumption, the oxidant is easy to obtain and safe, the particle size uniformity of reaction materials is good, and the prepared iron phosphate is uniform in particle size, regular in structure and stable in iron-phosphorus ratio and is a high-quality precursor material.

The invention provides a method for preparing a nitrogen-rich liquid fertilizer and a soil conditioner from agricultural biomass wastes, and belongs to the technical field of humic acid synthesis. According to the agricultural biomass waste treatment method, nano-bubble nitrogen sources are coupled with agricultural biomass waste for a hydrothermal reaction, and the nitrogen sources in the method serve as additives to provide nitrogen elements to improve the quality of humic acid and serve as catalysts to improve the yield; by adopting a nano bubble solution system, the contact area of a nitrogen source, agricultural biomass waste and water is increased, and the yield and quality of a product are improved. According to the method disclosed by the invention, the quality and yield of humic acid and hydrothermal carbon are improved, the content of nutrient elements such as nitrogen element in the product is increased, the problems of low nitrogen fertilizer utilization rate, single returning nutrient of fulvic acid, humic acid or hydrothermal carbon and the like are solved, and a new thought is provided for resource utilization of agricultural biomass wastes such as straws and the like.

The utility model discloses a continuous cooling crystallization device for recovering and extracting sodium sulfate in waste battery electrolyte. The continuous cooling crystallization device comprises a crystallizer shell and a crystallizer jacket, the crystallizer jacket is fixedly arranged on the outer wall of the crystallizer shell in a sleeving manner; a circulating cooling medium is introduced into the crystallizer jacket, a coaxial sleeve-shaped guide cylinder is arranged in the crystallizer shell, two layers of stirring blades are arranged in the guide cylinder, and the stirring blade at the lower layer is flush with the lower edge of the guide cylinder; one end of a first channel serving as a feeding hole of the crystallizer is positioned on the side wall of the guide cylinder, and extends out of the outer wall of the crystallizer jacket after sequentially passing through a cylinder body of the crystallizer shell and the crystallizer jacket; one end of a second channel serving as a turbidimeter and thermometer port extends into the barrel of the crystallizer shell and extends out of the outer wall of the crystallizer jacket after passing through the crystallizer jacket, and one end of a first channel located on the side wall of the guide cylinder is located between the double-layer stirring blades.

The invention relates to the technical field of glycerol triacetate preparation, in particular to an esterification phase splitter for preparing glycerol triacetate, which comprises a tower tray arranged in a rectifying tower, umbrella-shaped covers are uniformly distributed on the upper surface of the tower tray, and the tower tray comprises a movable tray, a fixed tray, a riser and an adjusting mechanism. By optimizing the structure of the umbrella-shaped cover and the design of the adjusting mechanism, the problems of a viscous layer and entrainment caused by high viscosity of glycerol triacetate are solved, by reducing the diameter of the bottom of the umbrella-shaped cover and reducing the comprehensive height of the overflow weir, the liquid flowing space is enlarged, the liquid retention time is shortened, and by forming an air inlet groove and an adjusting hydraulic oil cylinder, the liquid retention time is shortened. The gas-phase flow area is increased, gas-liquid contact is optimized, entrainment is reduced, through adjustment of the hydraulic oil cylinder, adaptation to the requirements of different reaction stages is achieved, the height of the downcomer is increased, and the flooding risk is reduced.

The invention discloses a thin-layer high-density filler which is prepared by combining an optimized weaving method, weaving density and a bundling mode on the basis of a plain woven wire mesh filler. The novel weaving method enables the weft number of the thin-layer high-density filler to be larger than that of plain woven wire mesh filler under the condition of the same warp number, and the thin-layer high-density filler has the characteristics of high specific surface area, high mass transfer efficiency, low flow pressure drop and the like. A large number of micropores exist on the surface of the thin-layer high-density filler, the wettability is extremely good, the transverse diffusion effect of liquid in the filler can be greatly enhanced due to the fact that the weft density is large, the performance is particularly outstanding in the processes of large-spraying-density rectification and the like, and the pressure drop is about 30%-50% lower than that of a common plain woven filler. The filler provided by the invention mostly adopts stainless steel wires as raw materials, and has the advantages of low cost, large flux, stable performance and low metal exudation rate, so that the filler is difficult to replace in the field of heat pump rectification, high-purity electronic chemical separation, intermediate separation and isomerism separation production.

The invention relates to a spraying device capable of rotationally spraying out spraying liquid, an absorption device and application of the absorption device. The spraying device can atomize spraying liquid, so that the gas-liquid mass transfer efficiency is improved, and the acid consumption is reduced. The spraying device comprises a spraying liquid inlet, a first spraying pipe in fluid communication with the spraying liquid inlet, and a plurality of second spraying pipes which are in fluid communication with the first spraying pipe, are perpendicular to the first spraying pipe and extend towards the two sides of the first spraying pipe. The third spraying pipes are in fluid communication with the second spraying pipes and extend towards the two sides of the second spraying pipes in the direction perpendicular to the second spraying pipes, and the nozzles are located at the tail ends of the third spraying pipes and are in fluid communication with the third spraying pipes. The two adjacent nozzles located on the same side of the second spraying pipe are configured to enable spraying liquid to be sprayed out in the same rotating direction.

The invention provides a preparation method of an MXene-based alkaline electrolytic water hydrogen production electrode. The preparation method comprises the following steps: 1, pretreatment of a base material: cleaning impurities on the base material, drying, and carrying out sand blasting roughening treatment; secondly, first metal powder and second metal powder are weighed and mixed according to a certain proportion to be guided into a powder mixing machine, vacuum drying is conducted after mixing treatment, third metal powder is prepared, the first metal powder is MAX phase powder, and the second metal powder is one or more of metal simple substances or alloys used for water electrolysis hydrogen production; thirdly, third metal powder is deposited on the surface of the pretreated base material through the plasma spraying technology, and a composite coating is obtained; 4, immersing the base material treated in the step 3 into an activation solution for activation; 5, after activation is finished, the base material is taken out and dried, and then the electrode is obtained.The method optimizes the conductivity and hydrophilicity of the electrode, and the diversity of the morphology of a plasma spraying electrode coating is improved.

The utility model discloses a coal gas purification tower device and relates to the technical field of purification treatment equipment. A water tank is arranged at the bottom end of the tower body, the water tank is communicated with the tower body, a filter screen is arranged between the water tank and the tower body, a circulating pump is mounted on the water tank, the water inlet end of the circulating pump is connected into the water tank through a pipeline, a steel water conveying pipe is mounted in the tower body through a bearing, and spray heads are distributed on the steel water conveying pipe; according to the coal gas purification tower device, a two-layer water distribution mode is adopted, rotary spraying is arranged, the spraying pipe automatically rotates in the water spraying process, water mist can be uniformly sprayed into the tower body, the spraying range can be expanded, all-directional coverage is achieved, spraying is free of dead angles, the contact area between gas and liquid is increased, the mass transfer efficiency is further improved, and the gas purification tower device is suitable for large-scale popularization and application. The purification efficiency of equipment can be improved, meanwhile, a cleaning liquid real-time circulating filtering system is arranged, the utilization efficiency of liquid is improved, the working efficiency is high, and the performance is stable and reliable.

The invention discloses a pulse discharge eddy current cavitation generator which comprises an eddy current container, and the eddy current container is provided with a liquid inlet pipe allowing liquid to be guided in tangentially. An inlet of the liquid outlet pipe is communicated with the center of the vortex container, and the liquid outlet pipe is provided with an inner diameter decreasing section, a throat part and an inner diameter increasing section which are sequentially arranged from bottom to top; the flow guide part is arranged in the center of the vortex container and is positioned on the lower side of the liquid outlet pipe; from bottom to top, the outer diameter of the flow guide piece is gradually reduced; the flow guide part and the liquid outlet pipe are coaxially arranged; a first electrode is arranged in the liquid outlet pipe, and a second electrode opposite to the first electrode is arranged in the flow guide part; the liquid outlet pipe is provided with an electrode holder for fixing the first electrode; and the liquid outlet pipe body is provided with a liquid outlet. The vortex hydrodynamic cavitation generator and the nanosecond pulse device are combined in the same device, so that the energy consumption of the device is reduced, the discharge efficiency and the organic matter degradation efficiency are improved, and the space is saved.

The invention discloses multi-stage wastewater treatment equipment for fabric disinfectant production, and relates to the technical field of wastewater treatment.The multi-stage wastewater treatment equipment for fabric disinfectant production comprises a filtering bin, a shielding cover is detachably and fixedly installed at the top end of the filtering bin, and a water inlet pipe is fixedly communicated with the center of the top of the shielding cover; the auxiliary stirring mechanism comprises a rotating part which is rotationally connected to the center position of the bottom of the inner wall of the filtering bin; the compression of the supporting spring and the compression of the buffer spring are synchronously carried out, when the flow of waste water is reduced or the impact force applied by the flow to the trapezoidal block is changed, the acting force on the supporting spring and the buffer spring is reduced, and the supporting spring and the buffer spring tend to rebound upwards, so that the filter screen is further buffered through the supporting spring and the buffer spring; meanwhile, the filter screen vibrates in the using process, and the situation that the filter screen is blocked by large-particle impurities, and preliminary filtration of the wastewater is affected is avoided.

The invention discloses a fluidized collision type bioelectric reaction device suitable for high-carbon sewage treatment. The device comprises a reactor body, a capacitive electroactive biofilm carrier, an anode plate and a cathode plate. The reactor body is a cylinder, the bottom of the reactor body is provided with a water impeller, and the areas are separated by grids; the capacitive electroactive biofilm carrier is a sphere formed by stacking round sheets and is made of polyethylene plated with an ITO (Indium Tin Oxide) film, and stainless steel spikes are arranged on the surface of the capacitive electroactive biofilm carrier; the cathode plate is made of graphite and is cylindrical; the anode plate is made of stainless steel compounded by lauryl sodium sulfate and graphene-multi-walled carbon nanotubes and is cylindrical, the plate wall is hollow, and the anode and the cathode are connected through a circuit. Electron transfer is completed through flowing and collision of the capacitive electroactive biofilm carrier, the mass transfer efficiency and activity of the electroactive biofilm are enhanced, the high-carbon wastewater treatment capacity is improved, and meanwhile the device has the advantages of being high in impact load resistance and low in site area requirement.

The invention discloses an organic extraction device for preparing an organic framework material, and relates to the technical field of extraction devices. Comprising an extraction tank, the extraction tank is provided with an upper feeding port, a lower feeding port, an upper discharging port and a lower discharging port, and fixing rings distributed in a linear array mode are installed in the extraction tank; the fixed shell is rotationally connected to the extraction tank; the plurality of first telescopic shells and the plurality of second telescopic shells are embedded in the fixed shell; the first turntable is in limited sliding connection with the fixed shell; and the second turntable is connected to the fixed shell in a limiting and sliding manner. By detecting the concentration of an organic component in a stock solution, when the concentration of the organic component is increased, the distance between the first turntable and the second turntable and the fixed ring is reduced, so that the flow area of liquid in the extraction tank is reduced, a higher shearing force is generated when the solution flows, the dispersion degree of liquid drops of the solution is increased, and the extraction efficiency is improved. The mixing speed of the stock solution and the extractant is accelerated, and the mass transfer efficiency is improved.

The invention discloses a self-gas-stirring partition plate type efficient anaerobic bioreactor and a method, and belongs to the field of nitrogen and sulfur-containing organic wastewater biological treatment devices. The reactor sequentially comprises a first reaction zone, a second reaction zone, a third reaction zone and a three-phase separation zone which are communicated with one another from bottom to top. Anaerobic granular sludge is inoculated in the first reaction zone for hydrolytic acidification reaction; anaerobic activated sludge with denitrification and sulfate reduction functions is inoculated in the second reaction area, and nitrate and sulfate reduction reaction is carried out. Anaerobic activated sludge with a methanogenesis function is inoculated in the third reaction area, and a methanogenesis reaction is carried out. The three reaction zones are separated by ecological partition plates to ensure water and air permeability and no mud permeability. According to the reactor, the ecological partition plates are arranged to realize anaerobic reaction function division, and multiple components in complex organic wastewater are synergistically removed, so that the pollutant removal efficiency is improved; the flow state in the reactor is improved through self-produced gas backflow, the mass transfer and detoxification effects are enhanced, and the decontamination effect and stability of the reactor are improved.

The invention relates to the technical field of preparation of VOCs catalytic oxidation catalysts, in particular to a reticular spherical B-MnO2 catalyst based on a B-Ov-Mn active center and a preparation method and application of the reticular spherical B-MnO2 catalyst. The B-MnO2 catalyst is prepared from delta-MnO2 serving as a basic component, a B-O-Mn structure formed by doping B into the delta-MnO2, and an asymmetric oxygen vacancy B-Ov-Mn active center formed on the basis of the B-O-Mn structure, compared with the existing MnO2 catalyst, the B-MnO2 catalyst prepared by the preparation method disclosed by the invention is formed by connecting a plurality of nanosheets to form a net-shaped ball, so that the B-MnO2 catalyst has a high specific surface area; moreover, by constructing an asymmetric oxygen vacancy B-Ov-Mn active center, the catalyst can effectively promote the adsorption and activation of H2O and enhance the electron transfer between H2O molecules and the catalyst, so that water vapor contained in actually discharged VOCs waste gas and water vapor contained in the environment can be quickly converted into active hydroxyl groups and participate in catalytic oxidation reaction, and the catalytic oxidation effect is improved. Therefore, the inhibition effect of H2O molecules in a traditional MnO2 catalyst is converted into the promotion effect, and the MnO2 catalyst has good market competitiveness.

The invention discloses a treatment method for synchronously removing ammonia nitrogen and organic matters in biogas slurry, which comprises the following steps: the biogas slurry is subjected to electrochemical treatment and ultraviolet radiation treatment at the same time, the anode adopted in the electrochemical treatment comprises a ruthenium iridium titanium electrode, and the cathode comprises an iron-doped modified carbon felt electrode. The preparation method of the iron-doped modified carbon felt electrode comprises the following steps: a, carrying out ultrasonic cleaning on a carbon felt; b, the cleaned carbon felt is soaked in acid liquor to be activated; c, dipping the activated carbon felt in a polytetrafluoroethylene solution; d, coating one side of the carbon felt treated in the step c with a solution containing carbon powder and polytetrafluoroethylene, and drying to obtain a carbon felt containing a catalyst layer; and e, dropwise adding an iron-containing precursor solution onto the carbon felt catalyst layer, and calcining to obtain the iron-doped modified carbon felt electrode. The treatment method provided by the invention realizes in-situ generation and activation of hydrogen peroxide, enhances removal of organic pollutants, reduces consumption of active chlorine by organic matters, and realizes synchronous removal of ammonia nitrogen and organic matters in the biogas slurry.

The invention relates to the field of electrochemical energy storage, and discloses a vanadium redox flow battery stack optimization and performance prediction method, which comprises the following steps: constructing a high-precision reaction kinetic model, and accurately describing the kinetic behavior of an electrode reaction based on a multi-step reaction mechanism, a surface adsorption-desorption process and heterogeneous surface reaction distribution; based on the output of the reaction kinetic model, constructing a multi-physical field coupling model, including ion mass transfer, fluid dynamics and heat transfer models, to cooperatively simulate the ion concentration, fluid flow and temperature field distribution in the galvanic pile; and based on the state variables of the multi-physics field coupling model, constructing a dynamic prediction model of chemical reaction-heat-fluid coupling, and predicting the future performance of the galvanic pile in real time through a long and short term memory network model. According to the method, the energy efficiency, the power density and the service life of the vanadium redox flow battery can be improved, and support is provided for intelligent management and optimization of the vanadium redox flow battery.

The invention discloses an electrochemical-catalyst dual-activated reactor for efficiently degrading azo dye by persulfate, which comprises: a reactor main body comprising a pretreatment chamber, a main reaction chamber and a post-treatment chamber which are mounted from bottom to top; the electrochemical unit comprises an anode, a cathode and a direct-current stabilized power supply, and the two ends of the direct-current stabilized power supply are electrochemically connected with the anode and the cathode; the catalyst unit is mounted at the bottom of the main reaction chamber; the liquid conveying system is used for sequentially conveying wastewater and a persulfate solution to the pretreatment chamber, the main reaction chamber and the post-treatment chamber, and the wastewater and the persulfate solution circularly flow in the chambers to finish pretreatment, degradation treatment and post-treatment; and the gas spraying system is used for uniformly inputting gas into the main reaction chamber. The reactor combines a dual activation mechanism of electrochemistry and a catalyst, generates active species with strong oxidizing property, remarkably improves the degradation effect of azo dyes, and has the advantages of high efficiency, simplicity and convenience in operation, wide applicability and the like.

The invention discloses a semi-coke tail gas chemical looping hydrogen production system which is characterized in that a first gas inlet chamber and a second gas inlet chamber are arranged in the hydrogen production system, and a reaction tube comprises a first reaction chamber and a second reaction chamber; the gas inlet of the first reaction chamber is communicated with the gas inlet of the second reaction chamber; the air outlet of the first reaction chamber is communicated with the air outlet of the second reaction chamber, so that the first reaction chamber and the second reaction chamber can supply air independently, the air speed in the first air inlet chamber is higher than that in the second reaction chamber, internal airflow circulation is effectively formed in the internal circulating fluidized bed, the reaction process is more sufficient, and the reaction efficiency is improved. The device effectively improves the hydrogen production efficiency, is simple in structure, realizes the independent air supply process through the independent design of the two cavities of the gas inlet pipe and the reaction pipe, realizes the effective circular reaction of tail gas in the reaction pipe through the control of the air speed, and improves the conversion efficiency.

The invention relates to a ship flue gas desulfurization and decarburization system based on ultrasonic enhancement and an adjusting method.The ship flue gas desulfurization and decarburization system based on ultrasonic enhancement comprises a desulfurization mechanism, a decarburization mechanism and an analysis mechanism, and the flue gas output end of the desulfurization mechanism is connected with the flue gas input end of the decarburization mechanism; a lean amine input end of the decarburization mechanism is connected with a lean amine output end of the analysis mechanism, a rich amine input end of the analysis mechanism is connected with a rich amine output end of the decarburization mechanism, and ultrasonic enhanced mass transfer components are arranged in respective reaction areas of the desulfurization mechanism, the decarburization mechanism and the analysis mechanism. Therefore, the dispersion effect of corresponding reaction materials in the reaction area is accelerated, and the mass transfer efficiency of the corresponding reaction materials is further improved. Ultrasonic waves can improve the analysis rate of the rich amine solution and reduce the requirement for the equipment size.

The invention relates to the field of municipal wastewater treatment, in particular to an expressway service area wastewater treatment device and method based on an AOOA-MBBR technology. The device comprises a first anoxic tank, a first aerobic tank, a second aerobic tank and a second anoxic tank which are communicated in sequence and are respectively filled with MBBR (Moving Bed Biofilm Reactor) filler, and the volume of the filled MBBR filler is used as an effective volume; aeration devices are respectively arranged in the first aerobic tank and the second aerobic tank; the first anoxic tank is used for inoculating hydrolytic bacteria and denitrifying bacteria; the first aerobic tank is used for inoculating hydrolytic bacteria, nitrifying bacteria and denitrifying bacteria; the second aerobic tank is used for inoculating nitrifying bacteria, and the second anoxic tank is used for inoculating hydrolytic bacteria and denitrifying bacteria; the second aerobic tank is communicated with the first anoxic tank through a return pipe, and the return pipe is provided with a return power assembly. The invention solves the problems of high operation cost, poor denitrification effect and high sludge yield due to the need of an external carbon source / electron donor in the existing treatment of the expressway service wastewater with the extremely low carbon-nitrogen ratio.

The low-temperature power type lithium ion battery comprises the positive pole piece, a negative pole piece, an electrolyte and a diaphragm, positive electrode slurry of the positive electrode plate comprises the following components in percentage by weight: 95%-97.5% of a positive electrode active material, 1.5%-3% of a positive electrode conductive agent and 1%-2% of a positive electrode binder; the positive pole piece is prepared by dispersing the components in an N-methyl pyrrolidone solvent and performing wet blade coating; the positive electrode active material is a nickel cobalt lithium manganate ternary material, the particle size distribution D50 of the positive electrode active material is 3.0-3.5 m, and the specific surface area of the positive electrode active material is 1.5-2.0 m < 2 > / g; the positive electrode conductive agent is composed of conductive graphite and carbon nanotubes, and the weight percentage of the conductive graphite is 50-70%; the positive electrode binder is polyvinylidene fluoride; the low-temperature performance of the positive electrode material is effectively improved.

The invention discloses an application of cobalt-loaded nitrogen-doped hollow carbon spheres in hydrodechlorination of electric catalytic florfenicol. According to the invention, cobalt is loaded on nitrogen-doped hollow carbon spheres to obtain cobalt-loaded nitrogen-doped hollow carbon spheres (Co / N-HCS). The cobalt-loaded nitrogen-doped hollow carbon spheres (Co / N-HCS) can efficiently remove carbon-chlorine bonds in antibiotic florfenicol molecules, and show very high florfenicol degradation rate and dechlorination rate.