33results about How to "Promote oxidation" patented technology

The utility model provides an aluminum alloy part oxidation device, belongs to the technical field of material surface treatment, and aims to solve the problem that the oxidation effect of an aluminum alloy part is influenced by non-uniform electrolyte caused by effective component sedimentation due to long-time standing of the electrolyte of the conventional aluminum alloy part oxidation device in the anodic oxidation process. The electrolyte box is of a rectangular box-shaped structure; the gear set shell is fixedly arranged at the upper end of the front end surface of the electrolyte box; the reciprocating driving motor is fixedly arranged on the left end face of the gear set shell; the spring limiting blocks are arranged on the upper end surfaces of the two cross beams of the pendant bracket; the reciprocating rotating assembly is arranged in the gear set shell; and the hanging frame fixing assembly is arranged at the position of the hanging piece support. The device has the comprehensive advantages that the electrolyte components are kept stable and uniform, and the oxidation process is faster and more efficient.

This invention provides a liquid metal-based thermal grease, its preparation method, and its application. The liquid metal-based thermal grease comprises the following raw materials in parts by weight: 100 parts liquid metal, 2-5 parts silicone oil, 0.1-20 parts thermally conductive powder filler, and 0.1-3 parts other additives. The high-reliability liquid metal-based thermal grease provided by this invention possesses excellent high thermal conductivity, high processability, and high reliability. It can replace traditional thermal grease to solve the heat dissipation and cooling problem of high-power chips, thereby extending the lifespan of electronic products.

The invention provides a method for detecting whether a wet process is healthy or not. The method comprises the steps that S1, a clean blank wafer is provided; s2, carrying out a wet process on the front surface of the wafer, wherein a solvent of the wet process contains a sulfur element; s3, performing wet processing on the back surface of the wafer, wherein a solvent for wet processing does not contain sulfur element; s4, performing defect scanning on the front surface of the wafer to obtain a first scanning result; s5, judging whether aggregation defects exist in the first scanning result or not; if yes, the wet process is not healthy, and if not, the wet process is healthy. According to the method and the device, the presence or absence of the sulfur element residue is judged by judging the presence or absence of the aggregated defect on the front surface of the wafer, so that the aim of detecting whether the wet process is healthy or not is fulfilled, the unhealthy wet process can be optimized, and the performance and the reliability of the device are improved.

This invention discloses a method for the biological drying of sludge, comprising the following steps: baking biomass materials, mixing the resulting baked product with sludge, biochar materials, and a conditioner for biological drying, thereby completing the sludge drying process. In this invention, by biologically drying the mixture of baked product, sludge, biochar materials, and conditioner, not only can the self-generated heat within the system be used to effectively dewater the sludge in a very short time, but the bioavailability of the microbial carbon source can also be improved, effectively reducing the generation of polluting gases. This method can effectively reduce the emission of polluting gases while achieving rapid dewatering. It has advantages such as simple process, low treatment cost, low energy consumption, high drying efficiency, good dewatering effect, low polluting gas production, and low content of toxic and harmful components in the dried product. It can solve the problems of biomass resource waste and pollution, achieve sludge reduction and resource utilization, and has high returns and good application prospects.

The application discloses a creep-resistant die-casting rare earth magnesium alloy with high strength and high fluidity, and a preparation method and application thereof. The application belongs to the field of die-casting magnesium alloys. The magnesium alloy comprises, in percentage by mass, Al: 4.8-7.2%, La: 3.0-4.2%, Sm: 1.2-2.0%, Y: 0.4-1.2%, Mn: 0.1-0.6%, Te: 0.01-0.1%, Bi: 0.01-0.5%, and the balance of Mg and inevitable impurity elements. The application significantly refines the structure of the magnesium alloy by optimizing the alloy composition, changes the composition, distribution and morphology of intermetallic compounds in the alloy, simultaneously generates Al-Te phases stable at high temperatures, improves the mechanical properties and creep resistance of the magnesium alloy, and further improves the die-casting fluidity of the magnesium alloy, so as to meet the requirements of large-scale integrated design automobile parts.

This invention provides a method for recycling lithium manganese iron phosphate waste. The recycling method includes the following steps: (1) mixing lithium manganese iron phosphate waste with a first acid solution, introducing sulfur dioxide and oxygen, and performing oxidative leaching to obtain a leaching slurry; (2) subjecting the leaching slurry to copper removal treatment to obtain leaching residue and leaching solution; (3) mixing the leaching residue from step (2) with a second acid solution, adjusting the pH value to perform a first precipitation reaction to obtain manganese iron phosphate; and subjecting the leaching solution from step (2) to lithium extraction treatment to obtain purified lithium salt. The recycling method provided by this invention has a better oxidation effect, does not introduce a large amount of cationic impurities, can realize the full-component recovery of lithium manganese iron phosphate battery cathode materials, and can obtain battery-grade purified lithium salt materials and the precursor manganese iron phosphate products required for battery-grade lithium manganese iron phosphate cathode materials; and the process cost is low, which improves the added value of the products and better meets the actual production needs.

The present invention proposes an improved method for extracting humic substances from coal by oxidation, the method comprising a sonication grinding step before the oxidation step, the oxidation step being carried out in the presence of an oxidizing agent under irradiation with ultraviolet light.

The mixer comprises a plurality of raw material barrels, a plurality of peristaltic pumps, a controller and a mixing barrel, a feed port is formed in the top of the raw material barrel, and a discharge port is formed in the bottom; different wine bodies are respectively arranged in the plurality of raw material barrels; a pipeline is arranged at the discharge hole; the peristaltic pump is arranged on the pipeline; the controller is electrically connected with the peristaltic pumps and controls the pumping speed of the peristaltic pumps. The mixing barrel is arranged below the raw material barrel; one end of a pipeline connected with the discharge hole is communicated with the interior of the mixing barrel; a stirring device is arranged in the mixing barrel; and a discharge opening is formed in the bottom of the mixing barrel. The problem that the matching control precision is insufficient due to the fact that wine blending is controlled through an adjusting valve is solved.

The utility model provides a portable coffee storage mechanism and a coffee powder box, the portable coffee storage mechanism comprises a top cover assembly, a first sealing piece, a storage container and a lower bottom cover; the top cover assembly is in threaded connection with the first end of the storage container, the lower bottom cover is connected to the second end of the storage container, a containing cavity is formed in the storage container and used for storing coffee powder, a groove is formed in the periphery of the top cover assembly, and the first sealing piece is arranged in the groove and tightly attached to the inner wall of the storage container in a surrounding mode. The groove is formed in the periphery of the top cover assembly, the first sealing piece is arranged in the groove, meanwhile, the first sealing piece is tightly attached to the inner wall of the storage container in a surrounding mode, and when the top cover assembly is connected to one end of the storage container through the threads, the first sealing piece is arranged in the groove of the top cover assembly; therefore, air and moisture are effectively prevented from entering the containing cavity of the storage container, and the freshness of the coffee powder placed in the containing cavity is guaranteed.

The utility model discloses a rotary kiln graphite block sealing device belongs to smelting equipment technical field, including main body mechanism and limiting mechanism, the main body mechanism includes annular support and graphite block, the outside equidistance distribution fixed connection of annular support has Y shape limiting piece, the graphite block annular array distribution is in the outside of annular support, the limiting mechanism includes limiting ring and elastic part, the limiting ring is set up in the outside of graphite block, the utility model discloses a Y shape limiting piece cooperation annular support is limited to install the graphite block, makes graphite block when floating that is influenced by radial runout, will extrude the upper half of Y shape limiting piece, make it inwards contract extrusion elastic part to the graphite block is buffered to the graphite block, prevents graphite block floating and leads to the joint place to produce leakage, limiting ring cooperation fixed disc is shielded protection to the graphite block, prevents graphite block long -term exposure and leads to the acceleration oxidation.

The utility model relates to a sequential reaction device suitable for passive treatment of acid mine wastewater, which comprises a water storage tank, a neutralization reaction tank, an MOB reactor and an SRB reactor which are sequentially connected through a pipeline, the heights of liquid outlets of the water storage tank, the neutralization reaction tank, the MOB reactor and the SRB reactor are gradually reduced, and corresponding liquid inlets are respectively formed in the lower parts of the water storage tank, the neutralization reaction tank, the MOB reactor and the SRB reactor; corresponding reaction units are arranged in the neutralization reaction tank, the MOB reactor and the SRB reactor. According to the utility model, based on water quality characteristics, terrain and oxygen supply conditions are reasonably utilized, and the collected AMD is passively treated; manganese oxidizing bacteria are introduced, oxidation of Mn (II) is promoted by means of Mn (III / IV) manganese oxide generated by the manganese oxidizing bacteria, other heavy metal ions are adsorbed, the manganese removal efficiency is greatly improved, the heavy metal ions and sulfate radicals in the AMD are removed through combination with multi-stage treatment of a neutralization reaction tank and an SRB reactor, meanwhile, the pH of effluent is increased, and multi-stage purification of the AMD is completed; the method is especially suitable for acidic heavy metal mine wastewater with high manganese ion concentration.

This invention relates to the field of graphene and discloses a method for preparing highly dispersible graphene oxide with a high monolayer ratio at low temperatures. The method includes: S1: ball milling a mixture of graphite and activated carbon; S2: immersing the graphite / activated carbon mixture in an acidic solution containing hypochlorous acid and / or hypochlorite under light irradiation for a pre-oxidation reaction to exfoliate the graphite into a monodisperse state; S3: oxidizing the product of reaction S2 in a concentrated sulfuric acid / perchloric acid mixed acid system; S4: diluting the product of reaction S3 with water and then introducing a ferrous salt for a reduction reaction; and finally, separating and washing to obtain a graphene oxide dispersion. This invention can prepare highly dispersible graphene oxide with a high monolayer ratio under low temperature and mild conditions. Furthermore, during the preparation process, this invention utilizes the synergistic effect of activated carbon and chloride ions to fully disrupt the large π bonds of the conjugated aromatic domains in graphite, thereby increasing the flexibility of the graphene sheets and reducing viscosity.

The application discloses a diesel oxidation catalyst for reducing N2O emission and a preparation method thereof. First and second catalytic coating layers of the catalyst are continuously coated on a carrier in sections, a third catalytic coating layer is located on the upper layer of the first catalytic coating layer, and a fourth catalytic coating layer is located on the upper layer of the second catalytic coating layer. The first and second catalytic coating layers are used for purifying HC / CO pollutants and oxidizing NOx into NO2. The third noble metal active component of the third catalytic coating layer is composed of Pt or a mixture of Pt and Pd, and the ratio of Pt / Pd is 5:1-1:0. The fourth noble metal active component of the fourth catalytic coating layer is one or more of Pt, Pd, Rh and Ru. The third catalytic coating layer is used for reducing the selectivity of the DOC catalyst to N2O when oxidizing NH3 and the selectivity to N2O when the HC-SCR reaction is performed. The fourth catalytic coating layer adopts a coating layer with N2O decomposition capacity, and the N2O selectively generated in the upstream section is decomposed into N2. The catalyst coating layers are mutually cooperative, have basic DOC catalytic performance, and can reduce N2O emission.

The application discloses a management system based on an internet of things technology and relates to the technical field of fishpond breeding management. The application comprises a device main body, a dissolved oxygen detector arranged at the center of the top of the device main body, wherein the dissolved oxygen detector is internally provided with an intelligent module, a temperature controller arranged at the top of the dissolved oxygen detector, and a local temperature prevention device arranged at the left side of the device main body. The local temperature prevention device comprises a fixing seat, an electric sliding rail and a heating assembly. The fixing seat is fixedly installed at the top edge of the device main body, the electric sliding rail is fixedly installed at the left side of the fixing seat, and the heating assembly is slidingly installed at the right side of the electric sliding rail. The application drives the heating assembly to move leftward and rightward through the electric sliding rail, expands the heating range of the heating assembly on the fishpond, avoids the harm of high local temperature to the wandering fish, and reduces the breeding cost of fish.

The present application belongs to the field of metallurgy, and discloses a method for removing arsenic, antimony and bismuth from crude copper, comprising the following steps: S1. Melting crude copper raw material to obtain molten copper liquid, and controlling the temperature of the molten copper liquid to be 1150-1250 DEG C; S2. Adding a slagging agent to the molten copper liquid, and introducing oxygen-containing gas to remove impurities from the molten copper liquid; first, maintaining the oxygen volume concentration at 0.1%-0.5%, adding a part of the slagging agent to react; then, increasing the oxygen volume concentration to 1.5%-3.0%, and adding the remaining slagging agent to react; wherein the slagging agent comprises an alkaline carbonate, an oxidizing agent and a crystal nucleus inducer; the oxidizing agent is sodium nitrate or / and potassium nitrate; S3. Allowing the molten copper liquid to be separated from the slag phase, and removing the slag to obtain refined copper liquid. The method can deeply remove arsenic, antimony and bismuth, and can reduce the amount of slag, and the slag system has good fluidity and is easy to separate, so that the copper purity is improved while the recovery rate is ensured.

The utility model provides a horizontal conveying device between the conductive groove and oxidation groove for roll stock anodic oxidation, including groove body device, and groove body device includes conductive groove and oxidation groove, be provided with first passageway in one side of conductive groove, be provided with second passageway in one side of oxidation groove, be provided with first water press roller mechanism outside first passageway, and first water press roller mechanism includes first water press roller group, and first water press roller group includes two first water press rollers, and there is first conveying passageway between two first water press rollers, be provided with second water press roller mechanism outside second passageway, and second water press roller mechanism includes second water press roller group, and second water press roller group includes two second water press rollers, and there is second conveying passageway between two second water press rollers, and first conveying passageway and second conveying passageway horizontal setting, utilize the structure of the utility model, when the roll stock being unwound is horizontally conveyed through conductive groove and oxidation groove, can effectively avoid the liquid mutual stringing between conductive groove and oxidation groove, improves oxidation effect.

The utility model belongs to the technical field of oil bath type air filters, and particularly relates to an oil bath type air filter with a self-heating device, which comprises a main body, an air inlet formed in the upper end of the main body, an air outlet formed in the outer side of the main body, an air inlet channel formed in the main body, a filter plate arranged at the bottom end of the air inlet channel and an oil pool arranged at the bottom end in the main body, an annular cavity is formed in the main body, a filter element is arranged in the annular cavity, and the main body comprises a filling cavity, a heating annular pipe and a connecting line. The filling cavity, the heating ring pipe, the aerogel filling piece and the heating mechanism (the heating ring pipe) are installed in the oil bath type air filter and do not need to be externally arranged, additional oil way pipeline connection is not needed, the risk of oil leakage and the risk of fire are prevented from being increased, temperature in an oil pool is prevented from being dissipated outwards, the oil pool is prevented from being affected by external low temperature, and the service life of the oil bath type air filter is prolonged. The temperature maintaining time of the heated oil liquid in the oil pool is prolonged, accelerated oxidation of the oil liquid caused by frequent heating of the oil liquid is avoided, and the service life and the filtering effect of the oil liquid are guaranteed.

The invention discloses a modified oxide solid electrolyte material as well as a preparation method and application thereof, and relates to the technical field of batteries. The preparation method of the modified oxide solid electrolyte material comprises the following steps: mixing a lithium source, an aluminum source and a titanium source in absolute ethyl alcohol, adding a phosphorus source, stirring and drying, and sequentially preheating, calcining and ball-milling to obtain lithium titanium aluminum phosphate powder; placing the modified oxide solid electrolyte material and dicyandiamide in absolute ethyl alcohol for mixing and ball milling, drying, performing heat treatment, cooling, dispersing in deionized water, adding magnesium nitrate, aluminum nitrate and urea for mixing, and sequentially preheating and calcining to obtain a modified oxide solid electrolyte material; when applied to the battery, the battery cycle stability is improved.

This invention discloses a low-starch, high-expansion feed for carnivorous fish and its preparation method, belonging to the field of aquatic feed technology. The feed consists of a protein source, functional fiber, starch, and oil. During preparation, a portion of emulsified oil is first mixed with the powder and then extruded using a twin-screw high-shear extrusion process. The mixture is then dried in stages, and finally, the remaining oil and heat-sensitive nutrients are loaded using vacuum spraying. This invention utilizes enzymatic hydrolysis of fishmeal peptides and fiber to construct a protein cross-linking network to replace the starch backbone, combined with a vacuum permeation process, solving the problems of low-starch feed's difficulty in extrusion, easy dispersion, and easy oxidation of high-oil content. The resulting product has a low starch content, an expansion rate of 2.10~2.60 times, a bulk density of 360~440 g / L, a weight loss rate of ≤6% in water over 4 hours, a starch gelatinization degree of ≥90%, and a high vitamin retention rate, making it particularly suitable for carnivorous fish.

The application relates to the technical field of magnesium alloy surface treatment, in particular to a magnesium alloy powder micro-arc oxidation device. The device comprises a circulating pump arranged in an electrolyte tank, and an oxidation generating device arranged above the electrolyte liquid surface; the oxidation generating device comprises a hanging basket and a top cover arranged on the top of the hanging basket; a filter screen is arranged in the hanging basket; a cathode aperture plate is arranged between the hanging basket and the filter screen; the filter screen is filled with magnesium alloy powder; one end of an electrolyte circulating pipe is connected with the circulating pump, the other end of the electrolyte circulating pipe penetrates through the top cover and is provided with a shower head at the end; an anode ring is arranged in the magnesium alloy powder; the anode ring and the cathode aperture plate are connected with a micro-arc oxidation power supply; a plurality of overflow pipes provided with holes are inserted into the magnesium alloy powder; when the electrolyte stably flows out from the overflow pipes and the hanging basket holes, it is considered that the magnesium alloy powder is evenly infiltrated, and then the micro-arc oxidation is started. In the oxidation process, the particles are in full contact with the electrode, and the particles are not easy to be disconnected due to insulation after oxidation, so that the magnesium alloy powder has an ideal oxidation effect.

The invention discloses a high-strength flame-retardant phenolic aldehyde fireproof thermal insulation integrated board and a preparation method thereof, and belongs to the technical field of building materials. Phenolic resin, modified expanded vermiculite, polyphenyl particles, graphite polyphenyl particles, perlite particles and hexamethylenetetramine are mixed and stirred to obtain a mixture, and the mixture is subjected to hot press molding to obtain a structural layer phenolic board; taking a phenolic aldehyde insulation board as a middle layer, sequentially laying non-woven fabric on the surface of one side of the core material, smearing bonding mortar, attaching a structural layer phenolic aldehyde board, laying alkali-resistant glass fiber mesh cloth, smearing anti-crack mortar, and standing for 15 minutes; laying a non-woven fabric on the other side of the core material according to the same process, coating the non-woven fabric with adhesive mortar, attaching a second structural layer phenolic aldehyde plate, laying an alkali-resistant fiberglass mesh, and coating anti-crack mortar to obtain a prefabricated integrated plate; and standing and curing the prefabricated integrated plate to obtain the integrated plate. The obtained integrated plate has good mechanical property, flame retardant effect and heat preservation performance, and meets the requirement for integration of fire prevention and heat preservation of buildings.

The application provides a method for treating TPU waste by using molten salt, and belongs to the field of solid waste treatment.The method can solve the problems of traditional TPU waste treatment methods, such as easy generation of harmful gas, high cost and low safety.The method comprises the following steps: S1, drying a certain amount of CaCO3 and Ca(OH)2 at a certain temperature for a certain time, removing the excess water, fully mixing the dried CaCO3 and Ca(OH)2 at a certain proportion, and placing the mixture in a reaction kettle; S2, heating the reaction kettle to a certain temperature and keeping the temperature for a certain time to melt the CaCO3-Ca(OH)2 system; S3, adding TPU waste with a certain mass ratio of the melted CaCO3-Ca(OH)2 system into the reaction kettle to react, and forming waste salt after reacting for a certain time; S4, treating the waste salt after the reaction kettle discharges the waste salt to obtain a residue sample, weighing the residue sample to obtain a degradation rate, characterizing the composition and content of the waste salt sample, and determining the content of nitrate in the waste salt.The method is mainly used for treating TPU waste.

The utility model relates to the technical field of wastewater purification, in particular to a limestone-gypsum method desulfurization slurry preparation system. Comprising an accelerated clarification tank, and an ozone oxidation zone, a sludge buffer zone and a sludge settling zone which are communicated with one another are sequentially arranged in the accelerated clarification tank from top to bottom; an ozone uniform distribution device is arranged in the ozone oxidation zone and comprises an air inlet pipe, an air outlet pipe and an ozone outlet pipe, and air outlet holes are formed in the wall surface of the air inlet pipe; the ozone uniform distribution unit modules are arranged at intervals in the axial direction of the air inlet pipe, each ozone uniform distribution unit module comprises a fixing plate arranged in the vertical direction, the fixing plates are fixedly connected with the air inlet pipe, the wall face of each fixing plate is sequentially connected with a plurality of umbrella-shaped airflow uniform distribution plates from top to bottom, and airflow holes are formed in the umbrella-shaped airflow uniform distribution plates. Impurities such as organic matters in the solid-containing slurry can be effectively removed, and the gypsum quality can be improved; meanwhile, the oxygen content of the slurry is increased, and the energy consumption of an oxidation fan of a desulfurization facility is reduced.

This utility model relates to a sludge turning machine for drying sludge, belonging to the field of sludge treatment technology. The sludge turning machine includes: a turning machine body and internal turning rollers; wherein, the leveling component includes a shell disposed at the rear of the turning machine body, and guide strips are disposed on the lower inner side of the shell; when the turning machine body turns the sludge, the shell disposed at the rear of the turning machine body can level the turned sludge pile, making the surface of the sludge pile flat, which helps to evenly distribute moisture and air, promotes the oxidation and stabilization process of organic matter inside the sludge, improves degradation efficiency, and also makes the overall thickness of the sludge pile uniform, avoiding local water accumulation and reducing uneven humidity; when the turning machine body uses the shell to level the sludge pile, the fan-shaped guide strips on the lower inner side of the shell can evenly distribute the pressure acting on the surface of the sludge pile, making the leveling process more uniform.

The application discloses a preparation method of a barrier antibacterial TPU composite film. Graphene oxide is prepared by using an improved hummers method, fluorinated graphene is prepared by using hydrofluoric acid as a fluorine source, the fluorinated graphene is used as a carbon source, and fluorinated graphene quantum dots are prepared under the action of an oxidant and an alkaline condition. Chitosan is dissolved in an acetic acid solution and reacts with the FGQDs under the action of dodecanol to form a barrier antibacterial agent CS / FGQDs. The TPU composite film produced by using the barrier antibacterial agent not only has a certain improvement in antibacterial performance, but also has improved barrier performance, and can generate great social and economic benefits.

The application discloses a carbon-based composite material and a preparation method and application thereof. The carbon-based composite material is prepared by using biochar as a matrix, and loading manganese oxide and magnesium oxide on the surface of the biochar. The preparation method comprises the following steps: uniformly stirring and mixing dry and crushed biomass, a low-valence manganese salt solution and a permanganate solution according to a ratio of 200-500 g:1.5-2.5 mol:1-1.5 mol, washing, filtering and freeze-drying to obtain biomass loaded with manganese; and mixing and grinding the biomass loaded with manganese and inorganic magnesium salt according to a mass ratio of 1:1-1.6, and then pyrolyzing at high temperature to obtain a carbon-based composite material loaded with manganese and magnesium. The raw material is easy to obtain, and the preparation process is simple. The material has a large specific surface area and rich pore structure, can provide rich adhesion reaction sites for microorganisms and sludge, has strong oxidation performance of generating hydroxyl radicals on the surface through advanced oxidation, can improve the degradation efficiency of nitrogen and phosphorus in water in cooperation with microorganisms and / or oxidants, has good removal effect, is highly reusable, green and environment-friendly, and has high application value.

This invention discloses a method for preparing silver paste for a mobile phone speaker diaphragm, belonging to the field of mobile phone acoustic component preparation technology. First, a compound binder is placed in a constant-temperature stirrer, and a toughening agent is added. The mixture is stirred for 40-50 minutes at 70-90°C and a stirring speed of 500-510 r / min, resulting in a binder-toughening agent mixture. Next, based on this mixture, a compound solvent is added to adjust the viscosity of the mixture at 25°C to 5000 mPa·s. The viscosity is then measured using an NDJ-1 rotational viscometer at a rotation speed of 60 r / min. The test was conducted under the conditions of / min and shear rate; and after adjustment, the temperature of the mixing system was reduced to 50-60℃, and stirring was continued for 20-30 minutes for curing treatment, and the cured bonding system was output; based on this, the present invention optimizes the entire process of silver paste preparation, adds a special toughening agent to the bonding system, and fully integrates the toughening agent and the binder through constant temperature curing treatment, which effectively improves the brittleness of the silver paste after film formation, and at the same time precisely adjusts the viscosity and thixotropy of the silver paste to adapt to the ultra-thin characteristics of the diaphragm and the application scenarios of high frequency reciprocating vibration.

The invention relates to the technical field of yellow phosphorus tail gas treatment, and particularly discloses a yellow phosphorus tail gas purification device which comprises a magnetization pretreatment unit and a deep catalytic oxidation unit which are sequentially arranged in the tail gas flowing direction and communicate with each other. The deep catalytic oxidation unit comprises an electric heating catalytic reactor, a plurality of layers of electric heating catalytic nets which are arranged at intervals are arranged in the electric heating catalytic reactor, the electric heating catalytic nets are perpendicular to the flow direction of the tail gas, and all the layers of electric heating catalytic nets are electrically connected through conductive structures. The yellow phosphorus tail gas treatment device is optimized and improved, absolute dependence of traditional spraying washing on liquid drop atomization quality can be effectively avoided, the problems that a nozzle is blocked and a flow field is uneven are solved, and deep removal of difficult-to-treat components such as PH3 is achieved.

This application relates to the field of metal recycling technology, and in particular to a complete process for recycling lead from waste lead-acid batteries. The process includes: S1, dismantling and separation: dismantling the waste lead-acid battery into lead paste and lead grids; S2, lead paste treatment: feeding the lead paste, flux, and granular coal into an oxygen-enriched side-blown reduction furnace, introducing oxygen-enriched air for oxidative smelting, desulfurization, and lead sulfate decomposition, followed by reduction smelting to reduce metal oxides, producing crude lead, slag, and tin-containing intermediates; S3, tin-containing intermediate product treatment: smelting the tin-containing intermediates in an electric furnace to separate tin A and tin B, refining tin A and tin B through recycling to obtain refined tin; S4, lead grid treatment: after drying, the lead grids are fed into a lead melting pot for casting, removing unmelted impurities from the surface, adding antimony for conditioning, and then casting ingots to obtain refined alloy lead; S5, crude lead refining: the crude lead obtained in step S2 is refined through pyrometallurgical refining and electrolytic refining to produce refined lead. This application achieves targeted removal of impurity elements in lead recycling.

This invention discloses a method for preparing a ruthenium bipyridine-anchored photocatalyst, and also relates to its application in the conversion of biomass-based oil into alkane fuels, belonging to the field of photocatalysis technology. The preparation method involves using a sulfonated semiconductor material in combination with divalent tripyridine ruthenium, wherein the divalent tripyridine ruthenium couples with sulfonic acid groups on the surface of the sulfonated semiconductor through secondary ion exchange to form a ruthenium bipyridine-sulfonic acid ligand structure. The photocatalyst prepared by this invention has the following characteristics: it can significantly improve the separation efficiency of photogenerated carriers, enhance the absorption performance of the catalyst in the visible light band, and achieve comprehensive enhancement of catalytic performance through optimized oxidation and reduction capabilities. The photocatalyst prepared by this invention exhibits excellent light energy utilization efficiency and product yield in the photocatalytic conversion of biomass-based oil into alkane fuels, overcoming the limitations of single photocatalytic materials, and possesses significant technological advancements and broad practical application prospects.