53results about How to "Eliminate pollution" patented technology

The invention belongs to the technical field of tunnel construction, and particularly relates to tunnel new energy operation equipment and an energy consumption control method thereof.The tunnel new energy operation equipment comprises a crawler chassis, the crawler chassis is driven by a motor, an electric telescopic arm is fixedly installed on the surface of the crawler chassis, and an external cable is slidably connected to the inner wall of the electric telescopic arm; the external cable is used for being connected with a power grid to provide electric energy for operation equipment. According to the tunnel new energy operation equipment and the energy consumption control method thereof, by arranging the energy storage driving control mechanism and the rotary conductive mechanism, seamless switching and 360-degree continuous rotation operation of the equipment in a power grid direct supply mode and a battery power supply mode are achieved when the equipment is used, and waste gas pollution in a tunnel is fundamentally eliminated. The system has the characteristics of zero emission, low noise and high energy utilization rate, the direct electric charge and ventilation energy consumption are remarkably reduced, the comprehensive energy consumption is reduced, and a brand new green and efficient equipment solution is provided for tunnel construction.

The application relates to the alloy preparation technical field and provides a preparation method of a high-performance tin-copper alloy wire, which comprises the following steps: tin and copper are smelted in a vacuum environment, and then cooled to obtain a tin-copper intermediate alloy; pure copper and the tin-copper intermediate alloy are smelted and refined in a vacuum environment, and then the alloy solution after the refining is drawn to prepare a tin-copper alloy rod; the tin-copper alloy rod is vacuum heat-treated, vacuumizing is stopped after the heat treatment temperature reaches 750-900 DEG C, nitrogen-oxygen mixed gas is filled, tin on the surface layer of the tin-copper alloy rod reacts with oxygen to generate tin oxide, heat treatment is carried out after the heat treatment, heating is stopped after the heat treatment is completed, and natural cooling is carried out to obtain a tin-copper alloy rod blank; the tin-copper alloy rod blank after the vacuum heat treatment is subjected to rough drawing treatment. The preparation method disclosed by the application obtains a high-strength high-conductivity copper-tin alloy wire through a vacuum heat treatment internal oxidation technology, and realizes accurate regulation and control of the composition of a copper-tin alloy wire blank.

The application discloses a method for modifying and adjusting hot-state desulfurization slag of steelmaking, which comprises the following steps: mixing hot-state molten desulfurization slag and casting residue or mixed liquid casting residue in a hot-state adjusting and conditioning pool, and changing the caking and difficult-to-handle characteristics of the molten desulfurization slag into easy-to-handle modified slag for subsequent disposal. The application solves the technical problem of large lumps of slag and iron in existing steel enterprises, and has strong operability and no safety problem.

The invention discloses an integrated bulk machine. The bulk machine comprises a machine body supporting seat, a PLC controller, a silo, a dust collecting system, a lifting system and a telescopic barrel, wherein the silo is arranged on the machine body supporting seat in a penetrated mode and is fixedly connected by a fastener; the dust collecting system comprises a dust collecting fan, a dust collecting pipeline and a dust collecting filter barrel; the silo comprises a feeding port, a collecting bin, a discharging port and a curved valve; and the discharging port is fixedly connected with the telescopic barrel, the lifting system matches the telescopic barrel, and the PLC controller is respectively connected with the dust collecting fan, and the curved valve and the lifting system in a communicated mode. The integrated bulk machine has the advantages that each component cooperates with each other, and the machine is reasonable in design; by means of the machine body supporting seat,the whole device system is stabilized; by means of the dust collecting system, the dust pollution caused by transferring the powder can be eliminated; and by means of the lifting system, the change ofthe length of the telescopic barrel can be achieved, so that the whole device is capable of meeting the requirements of a silo of a vehicle body with different heights, the whole device is easy to operate and convenient to transfer, and the bulk machine has wide adaptability and high stability.

The application discloses a novel full-line fast distance protection method under a power system, which comprises the following steps: S1, continuously monitoring the voltage and current on one side of the line, and starting the protection when detecting that the current mutation variable exceeds a set threshold; S2, establishing an accurate line differential equation based on a pi type equivalent model; S3, constructing the differential equation in the time domain by using the collected voltage and current data, and directly and real-timely solving the equivalent transition resistance of the fault point; S4, establishing a relationship model of the additional measurement impedance and the equivalent transition resistance, accurately compensating the apparent impedance measured by the protection device, and accurately calculating the real distance from the protection installation to the fault point; and S5, comparing the calculated fault distance with a preset protection section, and realizing the fast isolation of the fault; the application has the advantages of weak feed adaptability improvement, strong anti-transition resistance capability, long line anti-maloperation optimization and fast action speed, and can provide effective technical support for the main protection configuration of new energy sending-out lines and high-proportion power electronic power grids.

The invention relates to the technical field of metallurgy, in particular to a preparation method of a high-nitrogen vanadium-nitrogen alloy and the high-nitrogen vanadium-nitrogen alloy.The preparation method comprises the following steps that 1, wet-based industrial-grade ammonium vanadate, a graphite carbon powder reducing agent, a metal iron powder catalyst and a water-based binder are mixed and stirred according to the mass ratio of 100: (18-22): (0.2-0.5): (8-20), and a mixture is obtained; 2, the mixed material is subjected to compression molding, and a preformed material is obtained; and 3, the preformed material is sequentially subjected to low-temperature pre-sintering dehydration treatment, high-temperature nitridation reduction treatment and cooling annealing treatment, and the high-nitrogen vanadium-nitrogen alloy is obtained. According to the preparation method, industrial-grade wet-based ammonium vanadate is directly adopted as a raw material, pretreatment is not needed, and the production cost is further reduced.

The invention discloses a method for efficiently leaching platinum group metal in a waste automobile catalyst, and belongs to the field of rare and precious metal smelting. The method comprises the following steps: a leaching process: mixing the hulled waste automobile catalyst with a leaching agent, carrying out acid leaching in an acidic solution for a period of time, adding a complexing agent to complex platinum group metals, leaching for a period of time, and filtering to obtain a pregnant solution rich in the platinum group metals and carrier residues; wherein the leaching agent is a cerium-containing compound; a resin adsorption process: adsorbing the pregnant solution through an adsorption column filled with adsorption resin to obtain an adsorbed solution; and an elution process: washing the adsorbed adsorption resin with water and eluting the platinum group metal step by step, and regenerating the eluted adsorption resin for cyclic utilization. The method aims at avoiding generation of toxic and harmful substances (chlorine and NOx) and use of highly toxic cyanide in an existing wet process, environmental pollution and potential safety hazards are fundamentally eliminated, and meanwhile the leaching efficiency of the platinum group metal is remarkably improved.

The invention relates to an electromechanical machine for converting animal skins into leather, consisting of a machine intended to participate in one or more steps of a process for converting any animal skins into leather. The machine is characterized in that it comprises: a main tank (1) in which the animal skin (3) is immersed in a treatment fluid, called syrup (2), containing one or more additives; an impeller suction motor pump (4) circularly conveys the syrup (2) through a water outlet pipe (5) to a reversing valve (5.1), the reversing valve guides the syrup (2) to one or more filters (6), guides the treatment fluid to a heater (7) or a bypass pipe (5.3), and finally reaches a group of storage tanks (8), and the storage tanks (8) are connected with the water outlet pipe (5). The filter is preferably a slow sand type filter, a decanter type filter, a settling tank type filter, an ozone or UVC ultraviolet radiation disinfection type filter, a zeolite type filter, an activated carbon type filter, an anthracite type filter, a silicon dioxide type filter, an argenite type filter or a copper ion generator type filter, and an opening / closing valve (5.2) is arranged on a pipeline behind the reversing valve (5.1). The syrup (2) is then stored and then discharged into the main tank (1) via a return line (5.4). The machine is provided with a gear motor (9), and the gear motor transmits power through a rotating shaft (10) provided with a clamp (13) at the end. The clamp is arranged opposite to another same clamp (13) mounted on the sliding shaft (11); the machine is provided with a fixed stop block (15.1) fixedly connected with the main tank (1) and a movable stop block (15) fixedly connected with the sliding shaft (11); a spiral spring (14) is mounted between the two stop blocks; when the length of the spiral spring changes, the spiral spring can control the reversing device (16), and then the rotating direction of the gear motor (9) is adjusted. The machine is provided with a programmable central computer, and the computer is controlled according to the required characteristics of each animal skin in the aspects of color, tanning agent type, fatliquoring agent type, fixing agent type and the like.

The present application provides a grounding facility for distribution electric wire. The distribution electric pole welding facility is a grounding terminal box installed on the electric pole, which electrically connects the distribution grounding wire of the distribution line and the ground grounding wire in the ground together, and a distribution electric pole welding facility installed at the end of the ground grounding wire, which includes a grounding assembly comprising a grounding terminal. The grounding assembly can pass through the connected grounding wire rod, the grounding terminal box of the grounding wire at the lower end of the grounding rod, and the grounding terminal box of the grounding wire of the grounding wire. The grounding terminal can pass through the grounding terminal of the grounding wire of the grounding wire. In order to facilitate the control, it is installed at the top of the rod extension pipe, seals the top of the rod extension pipe, includes smoke generating material for generating smoke, and rod smoke cap for installing electric igniter. The smoke material is ignited by electricity. The electric igniter works by the power supply of the battery, so as to generate smoke on the smoke material.

The present application relates to the technical field of water-based paint, in particular to a kind of polyaniline nano composite water-based epoxy heavy-duty anticorrosive paint and preparation method thereof, comprising: component A and component B, the component A includes water-based epoxy resin, film forming aid, dispersing agent, defoaming agent, polyaniline modified nano functional material, sheet filler, wetting and leveling agent, corrosion inhibitor, low shear thickening agent and medium shear thickening agent;The component B is water-based curing agent.The coating can solve the problem of environmental pollution emission in the coating process, and can also solve the hidden danger of safety, while having the characteristics of low density, high solid content, low paint consumption, high coating rate, fast surface drying time, high anti-sagging performance, etc., and the technical performance parameters can meet the protection requirements of C4, C5 coating standard.

The utility model discloses a kind of cooling tower multilayer sealing water leakage prevention water-collecting basin, belong to cooling tower technical field, including the water-collecting basin bottom surface formed by the bottom plate splicing combination of multiple;The four edges of each bottom plate are bent downward to form flange;Adjacent bottom plate is fixed by bolt on flange and is connected each other;The flange of the side of bottom plate is provided with the strip-shaped recess formed by recessing inward, and the flange of the opposite side is provided with the convex strip of Z-shaped bending and protruding outward;Adjacent bottom plate is spliced by recess and protrusion cooperation. The utility model discloses the butt joint edge of cooling tower water-collecting basin is designed as Z-shaped multilayer bending structure, to form multiple sealing barrier by multilayer adhesion, and reduce the amount of bolt, to significantly improve the water leakage prevention performance under the premise of not increasing material, reduce manufacturing cost and simplify production process.

The utility model discloses an insect capturing gun with high safety belongs to insect capturing tool technical field, including capturing gun main part, one end of capturing gun main part is provided with the gun mouth, has the clamping mechanism on installing the gun mouth, the gun mouth is clamped with extension assembly through the clamping mechanism, one end of extension assembly inserts into the gun mouth, the inner chamber of capturing gun main part is provided with negative pressure mechanism, and the extension assembly that the gun mouth is connected through the clamping mechanism, can effectively lengthen the distance between user and insect, make user more safe when capturing insect, especially suitable for capturing some insects that can have aggressiveness or make people uncomfortable, realize physical capture through negative pressure mechanism simultaneously, avoid the security risk that electric spark triggers, and need not use chemical reagent, completely eliminate the harm of chemical substance to human body and the pollution to air, greatly improve the safety and environmental protection in the use process.

This invention relates to the field of wood composite materials technology, specifically to a recycled wood composite board and its preparation process. The process includes recycled wood fibers pretreated with mild acid hydrolysis and a coordination adhesive system. The recycled wood fibers are derived from waste urea-formaldehyde resin-bonded engineered wood products. After treatment with an organic acid buffer solution with a pH of 3.5 to 5.0 at 80 to 120°C for 15 to 30 minutes, residual urea-formaldehyde resin fragments on the fiber surface partially depolymerize and generate amino groups in situ. The amino content on the fiber surface is 2.0 to 5.0 μmol / g. This invention activates the residual amino groups in situ through mild acid hydrolysis, transforming the residual resin from a bonding obstacle into a bonding enhancement resource. Excellent bonding performance can be achieved without pursuing a high degumming rate, fundamentally solving the technical problem of the incompatibility between degumming and fiber retention.

The application discloses a DC component suppression method and device for three-phase unbalanced grid-connected parallel inverters, and relates to the technical field of three-phase parallel grid-connected inverters. The method comprises the following steps: sampling and filtering the inductance current, and performing Clark coordinate transformation; compensating the zero sequence current through a PR compensator without a proportional coefficient Kp; performing inverse Clark transformation and harmonic injection to generate an initial modulation wave; extracting the DC component of the current, performing sum and difference calculation through a sum and difference calculation unit, and then performing PI compensation; and superimposing the compensation signal to the initial modulation wave to generate a PWM signal. The device comprises a three-phase four-bridge-arm inverter module, a filter / grid-connected inductance group, a filter capacitance group and a DC component suppression module, and solves the problems of excessive DC component, inter-module circulating current and suppression failure during harmonic injection in the prior art when the three-phase unbalanced grid is connected. The application is suitable for three-phase unbalanced conditions, has no circulating current risk, and the DC component meets the grid connection requirements, so that stable and continuous operation of the system can be realized.

The present application relates to the field of germanium polycrystal preparation, and specifically discloses a preparation method of high-purity germanium polycrystal, comprising the following steps: S01, using a mixed solution of up-grade HF and ultrapure water to ultrasonically clean a quartz boat, then using ultrapure water to rinse, blow dry and bake to complete the pretreatment of the quartz boat; S02, using a thin film deposition method to deposit 50-100 nm amorphous silicon on the inner wall of the pretreated quartz boat. The present application uses a quartz boat and an amorphous silicon layer on the inner wall of the quartz boat to replace a graphite boat and a carbon coating, completely eliminates carbon pollution, makes the produced high-purity germanium polycrystal C<0.1 ppt, and performs annealing treatment after depositing the amorphous silicon layer, so that high-temperature annealing can densify the amorphous silicon layer, improve the stability of the silicon layer, inhibit the reaction of Ge and SiO2, and reduce impurities.

The utility model discloses a kind of lithium tailings roasting gas recycling device, including primary recovery unit, secondary recovery unit and tertiary recovery unit, the primary recovery unit, secondary recovery unit and tertiary recovery unit are linearly arranged from left to right, and primary recovery unit, secondary recovery unit are communicated with a primary gas guide pipe between the two. Advantageous effect: through the linear arrangement and pertinence design of primary recovery unit, secondary recovery unit and tertiary recovery unit, the sequential separation and resource utilization of three kinds of gas are realized, the problem of "harmful gas is only removed not recycled, resource waste is serious" in traditional processing technology is solved. Among them, primary recovery unit uses 10-15%NaOH solution atomization spraying, relies on the increased gas-liquid contact area of filler layer, realizes the overall absorption of HF, and the NaF solution produced;Secondary recovery unit uses 5-8% ammonia as absorbent, cooperates with the compressed air of aeration pipe, realizes the removal of SO2.

The application relates to the technical field of aqueous zinc ion batteries, and discloses a green preparation process of a positive electrode material of an aqueous zinc ion battery. The process realizes resource utilization by recovering a manganese source from waste batteries and extracting a vanadium source from vanadium slag. The process realizes carbon-coated, pre-intercalation and nitrogen-doped synergistic optimization by adopting a green complexing agent to replace a toxic chelating agent, and by integrating in-situ doping, carbon compounding and gelation procedures under low-temperature water bath conditions, combining ultrasonic-assisted low-temperature aging and 400-420 DEG C low-temperature carbonization, so that the total energy consumption of the preparation process is significantly reduced compared with a traditional high-temperature process. Finally, the finished product is obtained through ball milling mechanical activation and centrifugal washing, so that the whole process is free of strong acid, strong alkali and toxic waste liquid, the yield is greatly increased, and the positive electrode material prepared through the process has a hierarchical porous structure, a high specific surface area and a nanoscale particle size.

This invention provides a continuous stepless adjustment device, method, and application for electron beam based on the axial position control of the convergence point, belonging to the field of electron optics adjustment technology. The invention includes an anode body, an anode aperture, an electromagnetic focusing unit, and a fixed single-aperture main aperture, coaxially arranged along the electron beam propagation direction within the lens barrel of an electron optics system. This invention uses the axial position of the electron beam's convergence point relative to the fixed single-aperture main aperture as the control degree of freedom. The electromagnetic focusing unit continuously adjusts the displacement of the convergence point along the optical axis, achieving continuous stepless adjustment of the electron beam. By completely eliminating the mechanical moving parts of the aperture, this invention not only achieves continuous and smooth adjustment of the electron beam but also fundamentally avoids the vibration, contamination, and failure risks caused by mechanical movement. This significantly improves the reliability, repeatability, and long-term stability of the electron optics system, while simplifying the system structure and reducing manufacturing and maintenance costs.

This invention discloses a low-temperature dry dust removal device for phosphorus furnace gas, comprising: two sets of series-connected metal felt filter screens, filter screen electric heaters, a backflushing system, a dust collection funnel, a spiral dust collector, and a fan. The outlet pipe of the yellow phosphorus furnace gas is connected to the inlet of the series-connected metal felt filter screens. Each metal felt filter screen is equipped with an electric heater. The backflushing system achieves dust removal by adjusting the valve switch to reverse the gas flow. The filter cake outlet of the metal felt filter screen is connected to the inlet of the dust collection funnel. The outlet of the metal felt filter screen is connected to the inlet of the fan. The dust outlet at the bottom front side of the metal felt filter screen and the dust collection funnel are sealed and connected to the dust inlet of the closed spiral dust collector. The outlet of the fan is the exhaust port of the device. This device can solve the problem of yellow phosphorus furnace gas condensation clogging and corrosion of equipment, achieve low-temperature and high-efficiency dust removal of yellow phosphorus furnace gas, and improve filtration efficiency and phosphorus yield.

The invention discloses an SAA-DoA high-precision direction finding method based on LSTM time sequence prediction, and the method comprises the following steps: sequentially switching a plurality of antenna units through a sequential sampling mode of a switch antenna array, and obtaining the signal sampling data of a target direction; performing phase processing on the signal sampling data, and extracting an instantaneous frequency time sequence representing carrier frequency drift; inputting the instantaneous frequency time sequence into a pre-trained long short-term memory network model, learning a dynamic change rule of carrier frequency drift through the model, and predicting an instantaneous frequency value of an unsampled time slot; based on the predicted instantaneous frequency value, reconstructing a complete parallel sampling data matrix through phase integral operation; based on the reconstructed parallel sampling data matrix, an array signal processing algorithm is adopted to calculate the arrival angle of the signal; according to the method, the precision of DoA estimation under the SAA architecture and the robustness in a real wireless environment are remarkably improved.

The invention relates to the technical field of gallium extraction, in particular to a method for extracting gallium from gallium-containing substances, which comprises the following steps: S1, adding a glycine-sodium citrate composite coordination agent into the gallium-containing materials to selectively leach out gallium, and adjusting the pH value to 8.8-9.2; s2, performing electrochemical deposition on a three-dimensional porous titanium-based PbO2 anode and a stainless steel cathode, and reducing the heavy metal into a metal elementary substance in situ by utilizing the characteristic that the reduction potential of Pb < 2 + > and Cd < 2 + > is higher than that of Ga < 3 + >, so that the concentration of the metal elementary substance is reduced to 1t; 0.1 mg / L; s3, gallium ions are specifically recognized through a Ga-IIP adsorption column, and a high-purity desorption solution is obtained through dilute sulphuric acid desorption; and S4, metal gallium is obtained through electrolytic deposition, and liquid obtained after electrolysis flows back to S1 to be recycled. Through the synergistic effect of selective complexing of the coordination agent, electrochemical in-situ heavy metal removal, ion imprinting specific adsorption and electrolyte closed-loop circulation, alkali consumption is reduced, the gallium recovery rate is high, the product purity is high, no heavy metal dangerous waste residues are generated, and the method is suitable for various gallium-containing materials such as bauxite mother liquor, lead-zinc smelting slag and coal ash.

The utility model discloses a defoaming device of a magnetic filtration system, which comprises a tubular spray beam, a plurality of nozzles, a water pipe, a manual water valve, a water flow regulating valve and a foam liquid level detector, the spray beam is fixed above a magnetic filtration roller, one end of the spray beam is sealed by a screwed plug, the other end of the spray beam is connected with an outlet end of the water pipe, and the nozzles are arranged along the spray beam. Each nozzle is installed on the spraying beam and is opposite to the magnetic filtering roller, the inlet end of the water pipe is connected with a desalted water pipeline, the manual water valve and the water flow regulating valve are installed on the water pipe, and the foam liquid level detector is installed on a circulating box of the magnetic filtering system. And a signal output end of the foam liquid level detector is connected with a controller of the water flow regulating valve. The spray nozzle is used for spraying water mist to the magnetic filtering roller, alkali liquor foam is eliminated through the water mist, the situation that a large amount of foam is accumulated and then scattered on the ground of a cleaning section is avoided, alkali liquor foam generated by a magnetic filtering system can be effectively restrained, consumption of alkali liquor is reduced, and environmental pollution is eliminated.

This invention discloses a method for vanadium extraction by co-roasting vanadium slag with plant ash extract. This invention utilizes plant ash extract as an additive to replace NaCl, and replaces traditional sodium roasting with potassium roasting for vanadium extraction. This completely eliminates the environmental pollution caused by traditional vanadium extraction processes. Furthermore, this invention achieves a vanadium leaching rate as high as 98%, ensuring high vanadium leaching even when completely replacing NaCl as an additive. In addition, using plant ash extract as an additive offers the advantages of readily available and inexpensive raw materials compared to NaCl.

The application discloses a rotary fluid heating device, both ends of a driving shaft are rotatably connected in a bearing seat, at least one rotating disc is installed in the middle of the driving shaft, a stator sleeve is installed on the driving shaft, the stator sleeve is arranged on the outer circumferential side of the rotating disc, a gap is arranged between the stator and the rotating disc, and the gap forms a closed space, at least one liquid inlet is arranged on one side end cover of the stator, at least one liquid outlet is arranged on the other side end cover of the stator, the liquid inlet and the liquid outlet are communicated with the closed space, and closed fluid is arranged in the closed space. The motor drives the rotor to rotate, part of the fluid in the closed space is converted into high-speed rotating fluid, the kinetic energy is converted into heat energy by using the cavitation phenomenon, the fluid is heated to the required temperature, the device can be used in places requiring hot water and steam-water mixture mixed with water vapor, and the device can also solve the problem that liquid, such as flammable, explosive and toxic liquid, cannot be heated by using open fire and electricity, the pollution emission generated by using fuel heating is eliminated, and the safety and reliability are improved.

The utility model relates to the technical field of gas drying equipment, and discloses a zero-gas-consumption blast cold blowing regeneration compressed gas drying system which realizes adsorption, regeneration and pressure equalization. The water content of gas entering the system is reduced, the quality of product gas is improved, meanwhile, energy consumption and production cost can be reduced, low-dew-point dry gas is prepared, cold-blowing airflow is powered by an air blower, cold-blowing circulating airflow is output from the air blower and enters a second adsorption tower from bottom to top, and cold-blowing cooling is conducted on an adsorbent; after flowing out of the second adsorption tower, the cold blowing gas enters the air blower to be sucked and pressurized and then is output, and is cooled by the regeneration cooler to form the whole cold blowing circulation until the temperature of the second adsorption tower is reduced to the set temperature, so that finished gas is completely not consumed, the cost is reduced, emptying is basically avoided in the whole process, and noise and pollution caused by sudden discharge of compressed gas are eliminated; the switching is stable, the service life of the adsorbent is prolonged, and the equipment basically realizes zero emission and saves energy.

The invention discloses an amplification culture medium, an amplification method and application of an iPSC (induced pluripotent stem cell) derived hematopoietic progenitor cell population, and relates to the technical field of cell culture. According to the amplification culture medium provided by the invention, animal-derived components are replaced by chemical small molecule combinations, so that the safety of cell products is remarkably improved; the yield of NK cells cultured by the culture medium is greatly increased, the HPC amplification multiple is increased to 2.5 times or more of that of a traditional process by adding tranexamic acid, and the bottleneck of industrial production is broken through. The method provided by the invention improves the process stability. The cells amplified according to the method provided by the invention strengthen the pertinence of lung cancer treatment.

The application discloses a glass microporous vacuum adsorption device with optical flatness and a manufacturing method thereof, and belongs to the technical field of precision machining and semiconductor manufacturing. The vacuum adsorption device comprises a glass substrate and an equalizing structure in communication with the glass substrate. The glass substrate is provided with a through micropore array manufactured by using an ultrafast laser processing technology. The micropore array is composed of a plurality of micropores penetrating along the thickness direction of the glass substrate. The micropore array is formed by ultrafast laser-induced modification and selective chemical etching. After the through micropores are formed, no additional surface polishing treatment is needed to maintain the optical flatness of the adsorption surface. The equalizing structure is in communication with an external vacuum system through a suction port to form a uniform negative pressure distribution on the adsorption surface. The vacuum adsorption device is suitable for adsorbing and fixing an ultrathin wafer. The application can realize uniform adsorption and reduce the risk of warping and scratching.

This invention belongs to the field of waste battery recycling and hydrometallurgical technology, specifically disclosing a stepwise precipitation separation method for nickel, cobalt, manganese, and lithium in lithium-ion battery leachate based on redox regulation. The method includes the following steps: First, the leachate containing nickel, cobalt, manganese, and lithium is adjusted to alkalinity; an oxidant is added to oxidize divalent manganese to manganese dioxide precipitate, which is then separated. Next, the pH of the filtrate is adjusted to neutral, and oxalic acid is added to preferentially form a complex and precipitate nickel ions. A reducing agent is added to the nickel-free filtrate to reduce high-valent cobalt to divalent cobalt, and the oxalate ions in the solution are used to precipitate and separate the cobalt. Finally, the pH of the filtrate is adjusted, and sodium carbonate is added at high temperature to obtain lithium carbonate precipitate. This invention, by controlling the redox potential and precipitation conditions of metal ions, replaces the traditional organic solvent extraction process, effectively solving the problems of easy emulsification of extractants, high cost, and environmental pollution.

This utility model discloses an integrated CO2 heat pump system for fresh air supply, comprising a housing with a fresh air inlet and a fresh air outlet; a primary and secondary efficiency filter, a first heat exchanger, and a second heat exchanger are sequentially installed inside the housing along the fresh air flow direction; the heat pump system using carbon dioxide as refrigerant includes a compressor, a four-way valve, an expansion valve, and a closed refrigerant circuit, the circuit being connected through the four-way valve port so that the compressor exhaust passes sequentially through the first heat exchanger, the expansion valve, and the second heat exchanger before returning to the compressor; a variable frequency fan is installed between the second heat exchanger and the fresh air outlet; temperature and humidity sensors are respectively installed on the outdoor and indoor sides; the controller connects the sensors, the four-way valve, the compressor, and the fan, and has the advantages of dynamically switching between cooling / heating / dehumidification modes and adjusting the fan speed according to environmental parameters.

A kind of sphalerite multi-element comprehensive utilization device and method, belong to sphalerite comprehensive utilization technical field, the device includes spiral propelling condenser;The spiral propelling condenser is mainly by stirring motor, spiral propelling stirring paddle, flue gas import, discharge airlock, flue gas export, tank body portion is constituted;The method includes: 1) sphalerite, hydrogen, alkali base oxide reduction reaction occurs, the metal component in sphalerite is reduced into metal element, sulfur is converted into alkali base sulfide;2) solid product alkali base sulfide is oxidized to obtain alkali base sulfate using its waste heat;Or, solid product alkali base sulfide is converted into hydrogen sulfide and alkali with water, hydrogen sulfide catalytic electrolysis obtains elemental sulfur and hydrogen, hydrogen is recycled for the first stage reduction, sulfur as product;3) zinc is in the form of zinc steam with flue gas and is taken out of the reaction system, and is condensed in spiral propelling condenser and is recycled;4) the obtained product after reaction is magnetically separated, and elemental iron powder is obtained.