16results about How to "Avoid passivation" patented technology

The invention belongs to the technical field of regenerated plastic particle processing, and particularly relates to regenerated plastic particle preheating equipment which comprises a smashing area, a heating area and a discharging area, the heating area is arranged at the top of the discharging area, and the smashing area is arranged at the top of the heating area. The meshing parts are symmetrically arranged on the two sides of the inner wall of the control box. Each meshing part is provided with a switching motor, a guide plate shell, a traction pull plate, a torque motor and a smashing roller shaft. As the crushing roll shafts on the two sides can be blocked or passivated due to the fact that plastic particles are blocked in gaps during continuous working, after crushing work is carried out for a period of time, the motor is switched to turn the crushing roll shafts on the two sides, and the crushing roll shaft without attached plastic residues on the other side is used for continuously carrying out crushing work; therefore, the continuous working time of the device is prolonged, and meanwhile the problem that the crushing roller shaft is passivated and stuck is avoided.

This invention relates to a modified zero-valent iron / biochar composite material with oxygen-rich vacancies and its application. The modified zero-valent iron / biochar composite material comprises a biochar carrier and zero-valent iron loaded on the biochar carrier. The surface of the zero-valent iron is coated with sulfur-containing iron compounds and / or boron-containing iron compounds, and the surface of the zero-valent iron contains abundant oxygen vacancies. The modified zero-valent iron / biochar composite material is specifically prepared by the following method: dispersing the biochar carrier and zero-valent iron in oxygen-free water and grinding; adding a sulfur source or boron source to the ground suspension, stirring and grinding thoroughly, and drying; subsequently soaking in a reducing solution, followed by high-temperature calcination and cooling to obtain the modified zero-valent iron / biochar composite material. Compared with the prior art, the modified zero-valent iron / biochar composite material prepared by this invention can be used synergistically with compound oxidants to achieve effective remediation of organically contaminated soil.

The invention relates to preparation of graphene-loaded nano zero-valent iron and application of the graphene-loaded nano zero-valent iron in chromium-containing wastewater treatment. The preparation method comprises the following steps: preparing 60mL of a KBH4 solution with the concentration of 0.5 mol / L as a solution A and 60mL of a FeSO4. 7H2O solution with the concentration of 0.1 mol / L as a solution B, adding 0.25 g of a single-layer graphene oxide dispersion liquid into the solution B, stirring for 30 minutes, recording as a solution C, slowly dripping the solution A into the solution C, performing suction filtration separation on powder C, and drying to obtain nZVI-coated GO. The graphene is loaded with nZVI to adsorb chromium in chromium-containing wastewater, and nZVI-GO-Cr formed after wastewater treatment can be used as an auxiliary tanning agent for leather tanning or retanning sections and has good recyclability.

The application discloses an electrochemical granulation electrode deintercalation lithium extraction membrane stack electrolysis equipment, which comprises an electrolysis tank and an electrode assembly; the electrolysis tank comprises a first side plate, a piece of side plate rubber pad, a plurality of tank bodies, another piece of side plate rubber pad, a second side plate and a first tank body rubber pad, an anion membrane and a second tank body rubber pad arranged in sequence between two adjacent tank bodies; the tank bodies are divided into anode tanks and cathode tanks, the anode tanks and the cathode tanks are arranged alternately in an X direction from the first side plate to the second side plate, and the number of the anode tanks is equal to that of the cathode tanks; and an elastic porous pad is laid on the inner cavity bottom wall of the tank body. The electrolysis equipment can realize efficient extraction of lithium resources in salt lake brine, has the advantages of high lithium recovery rate and current efficiency, and is convenient to install, maintain and observe and monitor in the lithium extraction process.

The application discloses an intelligent network operation and maintenance management method based on user behavior analysis and belongs to the technical field of network operation and maintenance management. The method obtains original behavior log data of a user terminal, performs double alignment of a behavior baseline and an abnormal deviation degree to obtain a user behavior time sequence feature sequence; a user behavior analysis model including an input gating layer, a behavior memory evolution layer and an output mapping layer is constructed, the input gating layer splits the feature sequence into a steady-state behavior component and a transient behavior component; the behavior memory evolution layer differentiates and stores and fuses the two components through a competition mechanism to generate a behavior evolution state field; the output mapping layer performs nonlinear decoupling on the behavior evolution state field to output a user behavior abnormal risk measure and a behavior prediction path; and a potential risk node and an expected behavior trajectory are determined according to the user behavior abnormal risk measure and the behavior prediction path, and a dynamic access control strategy is generated. The method can improve the abnormal behavior recognition accuracy and the timeliness of dynamic adjustment of access control.

The utility model relates to the field of conductive slip ring assembly, in particular to a portable conductive slip ring assembly auxiliary tool, which comprises a storage hopper, a glue outlet pipe, a sealing cover, a gluing mounting component and the like, the lower side of the storage hopper is connected with the glue outlet pipe, and the sealing cover is clamped on the left side of the middle lower part of the storage hopper; the storage hopper is provided with a gluing installation assembly used for conducting gluing and component installation when the conductive slip ring is assembled. By moving the button, the piston moves to extrude glue to flow out for gluing, and then the screw is contacted with the conductive slip ring, so that the screwdriver is unfolded and then the screw is rotated and tightened for fixation, the screwdriver can be directly rotated and unfolded to tighten the screw for auxiliary assembly after gluing is carried out during assembly of the conductive slip ring, the operation is simple, tools do not need to be replaced, and the working efficiency is improved. The device is convenient to carry and use, improves the assembly efficiency, reduces the assembly cost, and is convenient to use.

The invention belongs to the technical field of photoelectrocatalysis and environmental governance, and particularly relates to a zinc cadmium sulfide / titanium dioxide composite material, a preparation method thereof and application of the zinc cadmium sulfide / titanium dioxide composite material as a composite photoanode in hydrogen sulfide photoelectrocatalytic decomposition. The zinc cadmium sulfide / titanium dioxide composite material provided by the invention comprises an anatase phase TiO2 nanotube array arranged on the surface of a conductive substrate; and the CdZnS nano-particles are deposited on the anatase phase TiO2 nano-tube array. The zinc cadmium sulfide / titanium dioxide composite material provided by the invention is applied to hydrogen sulfide photoelectrocatalytic decomposition as a composite photo-anode, has high catalytic activity, high stability and high product selectivity, realizes synchronous H2 generation and H2S detoxification, and does not need complex separation steps. According to the invention, a novel material design strategy is provided for a high-performance PEC-H2S conversion system, and a technical insight is provided for green resource utilization of sulfide pollutants.

This application provides a highly sensitive and interference-resistant microsensor for ethylene monitoring, comprising a housing and a working electrode, a reference electrode, and a protective electrode disposed within the housing. One end of the housing is a detection tip, and the other end is a mounting end. The detection tip is sealed and filled with a breathable membrane layer. The housing is filled with a composite ionic electrolyte. The detection end of the working electrode is coated with a Pd-based doped composite nanolayer, which is applied to the detection end of a platinum wire substrate using a sputtering process. This application, through improvements to the electrode material, nanocoating process, and electrolyte system, effectively enhances the detection accuracy of the microsensor for ethylene detection, achieving nano-molar level accuracy, while also improving its interference resistance, coating stability, and service life.

The invention belongs to the technical field of veterinary instruments, and particularly relates to a clinical vaccination auxiliary device and method for veterinarians, the clinical vaccination auxiliary device comprises a vaccination gun and a needle tube mounted at the end of the vaccination gun, the vaccination gun is provided with a bottle seat for placing a vaccine bottle, and the bottle seat is provided with a puncture needle for puncturing the vaccine bottle; the adjusting mechanism comprises a sleeve disc which is fixedly arranged on the vaccination gun in a sleeving manner, and a connecting frame with a sliding plate is fixedly mounted on the sleeve disc; through the design of a connecting frame, a sliding plate, an adjusting plate and an adjusting groove, the length of the needle tube entering the poultry body is controllable, and the length of the needle tube penetrating into the poultry body is rapidly adjusted according to the actual requirements of different poultry. Therefore, the device adapts to the body types, day ages, fat and thin degrees and injection site differences of different poultry, and avoids the situations that vaccines cannot be effectively absorbed and immune fails due to too shallow needle insertion, or internal organs, blood vessels and nerves are damaged due to too deep needle insertion, and stress and tissue damage of the poultry is aggravated.

The invention relates to a TOPCon battery and a preparation method thereof.According to the TOPCon battery, a singlet fission layer is arranged on an aluminum oxide passivation layer of a battery piece, high-energy singlet excitons can be generated after high-energy photons are absorbed, the high-energy singlet excitons are converted into two triplet excitons, the short-circuit current of the battery piece can be increased, meanwhile, heat loss is not caused, and the efficiency of the battery piece is improved. And the conversion rate of the battery piece can be improved. In addition, a sulfanyl compound is introduced into the pentacene singlet fission layer, so that the stability and singlet fission performance of the singlet fission layer can be improved. Besides, the ultrathin passivation layer containing hafnium oxynitride is arranged below the singlet fission layer, so that the singlet fission performance of the singlet fission layer can be promoted, and a silicon semiconductor can be prevented from being passivated.

The application discloses a ball-milling mixed iron powder and a preparation method and application thereof. The mixed iron powder is prepared from iron powder, a solid oxidizing agent and a phenolic compound as raw materials. In a ball-milling condition, different valence iron species are generated in situ through a pre-oxidation effect of the solid oxidizing agent, self-depassivation is realized, and the passivation phenomenon generated by zero-valent iron in water is overcome. The mixed iron powder has high reactivity and can be used for wastewater treatment containing oxidizing components.

The invention relates to the technical field of zinc-silver reserve batteries, in particular to a low-temperature electrolyte preparation device and method for a zinc-silver reserve battery, and the method comprises the following steps: S1, preparing a basic electrolyte, S2, preparing a composite functional additive, S3, mixing a composite electrolyte, and S4, carrying out vacuum degassing treatment. The device comprises a mixing tank, a liquid density sensor is arranged in the mixing tank, and an additive feeding assembly is arranged at the top of the mixing tank; a rotation driving part is fixedly connected to the top of the mixing tank and fixedly connected with a rotating shaft, and a first stirring paddle assembly is arranged at the bottom of the rotating shaft; the rotating shaft is sleeved with a sleeve, a second stirring paddle assembly is arranged at the bottom of the sleeve, and a transmission assembly is arranged between the second stirring paddle assembly and the rotating shaft. The electrolyte is prepared by introducing the composite functional additive, the working performance of the zinc-silver battery under the wide temperature range condition is improved, the preparation device in a specific stirring mode is combined for preparation, the mixing efficiency of the additive and the basic electrolyte is guaranteed, and the finished product quality of the low-temperature electrolyte is improved.

This invention discloses a rapid cold-start water electrolysis hydrogen production system, belonging to the field of water electrolysis hydrogen production technology. The system includes an electrolyzer, a hydrogen-side gas-liquid separator, an oxygen-side gas-liquid separator, and a heat exchanger. The electrolyzer is connected to the inlet of the hydrogen-side gas-liquid separator via a first gas-liquid delivery pipeline, and to the inlet of the oxygen-side gas-liquid separator via a second gas-liquid delivery pipeline. The outlet of the hydrogen-side gas-liquid separator is connected to a first circulation branch, and the outlet of the oxygen-side gas-liquid separator is connected to a second circulation branch. Both the first and second circulation branches are connected to the first inlet of the heat exchanger via a first main circulation pipeline. The first outlet of the heat exchanger is connected to the electrolyzer via a second main circulation pipeline. This invention can significantly reduce the cold-start voltage, prevent electrode passivation in the electrolyzer, improve electrolysis efficiency, and reduce hydrogen production energy consumption.

The invention discloses a biomass acid desulfurization synergist as well as a preparation method and application thereof. The biomass acid desulfurization synergist comprises the following components in percentage by mass: 30-60% of a biomass acid active component, 10-30% of an alkalinity supplement, 5-15% of a metal ion chelating agent, 3-10% of a wetting dispersant and the balance of water. The biomass acid desulfurization synergist can supplement alkalinity in thermodynamics, can reinforce the mass transfer process in dynamics, can enhance the system stability and impact load resistance, and has important industrial application value.

This invention relates to the field of solid waste treatment technology, specifically to a device for the harmless treatment of wastewater from solid waste: It includes a pretreatment unit, an electrochemical synergistic reaction tank, and a deep filtration assembly connected in sequence. In the first reaction zone, an anode plate is used to mineralize highly stable organic pollutants, while simultaneously altering the form of dissolved heavy metal ions through electrodeposition or valence state conversion. Next, a first ultrasonic transducer prevents electrode passivation and promotes the migration of pollutants to the electrode surface. Subsequently, the wastewater after electrochemical conversion enters the second reaction zone, where a magnetic adsorption packing layer efficiently adsorbs and immobilizes the converted heavy metal ions and organic intermediates in situ. Simultaneously, a second ultrasonic transducer group prevents the adsorption medium from agglomerating and enhances adsorption kinetics. Using this structure, efficient removal of dissolved heavy metal ions and highly stable organic pollutants is achieved, resulting in better treatment of wastewater from solid waste.

The application discloses a method for inhibiting pyrite oxidation, and belongs to the technical field of metal mine tailing passivation. The method uses mesoporous silica (MSN) loaded with rhodamine B acylhydrazone (RBA) as a filler to fill a passivator formed by gamma-mercaptopropyl trimethoxysilane to inhibit the oxidation of pyrite. The improved pyrite oxidation inhibition effect greatly slows down the oxidation rate of the pyrite. The self-healing ability of the passivator prolongs the time effect of the passivator on the pyrite in terms of oxidation inhibition, and the oxidation sites of the pyrite are marked with fluorescence, which is beneficial to the rapid identification of the oxidation sites of the pyrite and the timely treatment of the oxidation sites of the pyrite, so that the oxidation sites are prevented from expanding and causing environmental pollution.