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Environment-friendly organic silicon intumescent fireproof coating for transformer substation or converter station as well as preparation method and application of environment-friendly organic silicon intumescent fireproof coating
ActiveCN119220174AImprove high temperature resistanceExtended service lifeFireproof paintsNucleophilic substitutionPhosphazene
The invention discloses an environment-friendly organic silicon intumescent fireproof coating for a transformer substation or a converter station as well as a preparation method and application of the environment-friendly organic silicon intumescent fireproof coating. The coating comprises the following raw materials in parts by mass: 30-60 parts of organic silicon resin, 30-45 parts of an intumescent flame retardant, 5-10 parts of modified glass powder, 2-20 parts of an inorganic filler, 2-10 parts of an auxiliary agent and 5-25 parts of a curing agent. The intumescent flame retardant takes a phosphazene compound as a gas source and an acid source; the phosphazene compound is prepared by carrying out nucleophilic substitution reaction on phosphonitrilic chloride trimer and melamine or dicyandiamide; the modified glass powder is prepared by mixing a plurality of glass powder with the melting point of 350-700 DEG C and then modifying by adopting a silane coupling agent. According to the invention, the high-temperature resistance of the organic silicon resin coating is improved through formula design, so that the service life of the steel in a high-temperature scene is prolonged, the performance reliability of fire-fighting equipment of a transformer substation or a converter station is improved, and the purpose of high-temperature resistance is achieved.
Owner:STATE GRID ANHUI ELECTRIC POWER CO LTD ELECTRIC POWER SCI RES INST
Ardealite source harmless treatment method
ActiveCN119259663AReduce pollutant contenteasy to operateSolid waste disposalO-Phosphoric AcidFilter system
The invention relates to the technical field of solid waste treatment, in particular to a phosphogypsum source harmless treatment method. Washing the tail section of the crystal growing slurry filtering system with clean water, and obtaining phosphogypsum after washing, wherein the ratio of the water consumption of the clean water to the phosphogypsum is (1: 10)-(1: 1) cubic / ton; performing size mixing on filter cloth washing water in a crystal growing slurry filtering system and the obtained ardealite to obtain ardealite slurry with the concentration of 20wt%-60wt%; adding a harmless treatment agent A into the obtained ardealite slurry, uniformly stirring and mixing, and reacting for 5-60 minutes to obtain first-stage reaction slurry; adding a harmless agent B into the obtained first-stage reaction slurry, uniformly stirring and mixing, reacting for 20-60 minutes, and filtering to obtain filtrate and harmless ardealite. The comprehensive recovery rate of fluorine and phosphorus valuable components in the wet-process phosphoric acid industry is realized through simple process improvement, and the pollutant content of the phosphogypsum after washing and filtering is reduced; according to the phosphogypsum harmless treatment method, the idea that industrial solid waste is used for treating pollution with waste is utilized, the agent preparation raw materials are wide in source and low in cost, and the agent is a toxic representative for solid waste pollution prevention and control cooperative control and assistant pollution reduction and carbon reduction synergistic interaction.
Owner:YUNNAN ACAD OF ENVIRONMENTAL SCI
Ultrasonic excitation and acid fracturing integrated permeability-increasing coal seam intensified extraction system and method
ActiveCN119102740AImprove permeabilitySimple structureSurveyMining devicesAcid fracturingThermodynamics
The invention discloses an ultrasonic excitation and acid fracturing integrated permeability-increasing coal seam enhanced extraction system which comprises an ultrasonic excitation and acid fracturing integrated drilling and feeding device, an ultrasonic control box and a liquid mixing box, and further discloses an ultrasonic excitation and acid fracturing integrated permeability-increasing coal seam enhanced extraction method. Comprising the following steps: S1, collecting a sample in a coal seam; s2, four extraction drill holes with unequal distances are constructed in the coal seam; s3, gas concentration detection is conducted on the extraction drill hole; s4, an ultrasonic transducer is started, and a fracturing pump is started for fracturing; the ultrasonic transducer is started again; s5, after the step S4 is repeated five times, the fracturing pump is closed, and then the ultrasonic transducer is started; and S6, gas concentration detection is conducted on all the extraction drill holes. The method has the advantages that ultrasonic excitation and the acid fracturing effect are mutually coupled, the pore structure of the coal body is improved, the connectivity of pore fractures is improved, gas desorption is promoted, and the coal seam gas extraction efficiency is improved.
Owner:CHONGQING UNIV
Improved textile printing and dyeing wastewater treatment device and use method thereof
ActiveCN119612722Astrong stirringadequate responseSpecific water treatment objectivesRotary stirring mixersTextile printerFlocculation
The invention relates to the technical field of printing and dyeing wastewater treatment equipment, and discloses an improved textile printing and dyeing wastewater treatment device and a use method thereof.The improved textile printing and dyeing wastewater treatment device comprises an equipment shell, and a plurality of supporting legs are fixedly connected to the bottom of the equipment shell. According to the textile wastewater treatment device, a second gear rotates to drive a plurality of second auxiliary rotating shafts on a conveying rotating shaft to rotate, the second auxiliary rotating shafts rotate to drive a transmission filter screen to rotate, and meanwhile, a stirring rod rotates to drive wastewater in an inner cylinder to rotate along the inner wall of the inner cylinder; flocculation groups in the wastewater are attached to the surface of the transmission filter screen, and at the moment, the transmission filter screen rotates to convey the flocculation groups in the inner cylinder into the flocculation cavity, so that on one hand, a large number of flocculation groups in the inner cylinder can be reduced in time, and on the other hand, the flocculation groups which are flocculated into clusters can be transferred into the flocculation cavity; therefore, the situation that the stirring force of the stirring rod is too strong, flocculation groups are broken, and impurity separation is not facilitated is prevented.
Owner:SHUYANG LINGSHU TEXTILE CO LTD
Solid hydrogen storage device
ActiveCN119123302AImprove the efficiency of hydrogen absorption and desorptionImprove heat transfer efficiencyContainer filling methodsFluid transferredThermodynamicsMechanical engineering
The invention discloses a solid hydrogen storage device which comprises a carrying box, a plurality of hydrogen storage tank mounting cavities and a plurality of hydrogen storage tank mounting cavities, the plurality of hydrogen storage tanks are respectively mounted in the hydrogen storage tank mounting cavities; a solid hydrogen storage structure is arranged in the hydrogen storage tank; the solid hydrogen storage structure comprises a heat conduction pipe, a plurality of heat conduction sheets and a plurality of solid hydrogen storage materials, the heat-conducting fins and the solid hydrogen storage material are sequentially and alternately stacked from top to bottom, and the heat-conducting pipe vertically penetrates through all the heat-conducting fins and the solid hydrogen storage material and circumferentially surrounds the heat-conducting fins and the solid hydrogen storage material in a snakelike shape; a plurality of through holes corresponding to each other are formed in the heat-conducting fin and the solid hydrogen storage material; and a heat-conducting medium inlet and a heat-conducting medium outlet of the heat-conducting pipe extend out of the hydrogen storage tank. The heat exchange efficiency of the solid hydrogen storage material can be improved, and then the hydrogen absorption and desorption efficiency of the solid hydrogen storage material is improved.
Owner:GUANGZHOU POWER SUPPLY BUREAU GUANGDONG POWER GRID CO LTD
Water treatment fluorine removal agent as well as preparation method and application thereof
PendingCN119551788AEfficient removalStrong targetingWater contaminantsWater/sewage treatment by flocculation/precipitationPhysical chemistrySemiconductor chip
The invention relates to the technical field of water treatment fluorine removal agent production, in particular to a water treatment fluorine removal agent and a preparation method and application thereof. Specific raw materials are added and reasonable treatment steps are adopted for the wastewater containing fluorine, copper and iron ions generated in the semiconductor chip manufacturing etching process, so that the fluorine ions can be effectively removed; the method can remove copper and iron ions or reduce the influence of the copper and iron ions on fluorine removal (especially wastewater simply treated by sodium sulfide which is specially used for removing copper and iron ions), and has strong pertinence and applicability to etching wastewater with specific water quality; the method is good in collaboration, has both operability and flexibility, and ensures the treatment effect.
Owner:ZIBO ZHIYAN ENVIRONMENTAL PROTECTION TECH CO LTD +1
Hydrolysis-resistant heat-conducting polyurethane pouring sealant and preparation method thereof
ActiveCN119307220AReduce reactivitylong operating timeNon-macromolecular adhesive additivesPolyureas/polyurethane adhesivesPolymer sciencePtru catalyst
The invention belongs to the technical field of polyurethane pouring sealants, and particularly relates to a hydrolysis-resistant heat-conducting polyurethane pouring sealant and a preparation method thereof. The hydrolysis-resistant heat-conducting polyurethane pouring sealant is prepared from a component A and a component B according to the mass ratio of 100: (18.5-20.5), and the component A comprises the following raw materials: amine ether polyol, modified castor oil, a flame retardant, a heat-conducting filler, a silane coupling agent and a catalyst; the component B is prepared from the following raw materials: polymerized MDI (Diphenyl Diisocyanate), MDI-50 and carbodiimide modified MDI; the amine ether polyol is prepared by carrying out a reaction on 3, 3 '-dimethyl-4, 4'-diaminodiphenylmethane and epoxypropane. The hydrolysis-resistant heat-conducting polyurethane pouring sealant disclosed by the invention not only has good technological operation performance and heat-conducting performance, but also has excellent hydrolysis resistance, and still has good mechanical property and electrical insulation property after being aged; the invention also provides a scientific, reasonable, simple and feasible preparation method.
Owner:SHANDONG INOV POLYURETHANE
Reaction device for preparing organic compound
InactiveCN119656994Aadequate responseEfficient responseCleaning using liquidsChemical/physical processesSimple Organic CompoundsPtru catalyst
Owner:SHAANXI DIDU PHARM CHEM CO LTD
Quantitative dosing device
ActiveCN222138733UMeet processing needsNo wasteRotary stirring mixersTransportation and packagingMechanical engineeringWater treatment
The utility model discloses a quantitative dosing device which is characterized in that a mixture of waste water and chemicals can be uniformly stirred through a stirring mechanism in a waste water tank to ensure full reaction, and a piston plate in a quantitative tank is positioned at a certain height through a quantitative structure according to the actual water quantity of the waste water in the waste water tank; wherein the piston plate is tightly attached to the inner wall of the quantitative chamber, large friction exists, the piston plate can move upwards or downwards only under the buoyancy effect of the buoyancy plate or the effect of manual force application, the dosage of the agent in the quantitative chamber can be matched with the amount of waste water through the structure, waste of the agent is not caused, and the requirement for waste water treatment can be met.
Owner:CHENGYAN (SHANGHAI) ENVIRONMENTAL TECH CO LTD
Petroleum exploitation tensile cable based on high polymer material and production method thereof
PendingCN119592028Apromote environmental protectionpromote degradationPlastic/resin/waxes insulatorsNatural fiberMacromolecule
The invention discloses an oil exploitation tensile cable based on a high polymer material and a production method thereof, and relates to the technical field of cables, the cable comprises a conductor and an insulating layer wrapping the conductor, the insulating layer is made of a bio-based high polymer composite material, the bio-based polymer composite material comprises the following components in parts by weight: 50-70 parts of a bio-based polymer matrix and 20-30 parts of reinforced fibers. The bio-based polymer composite material is adopted as an insulating layer of the tensile cable for oil exploitation, so that the environmental protection performance and biodegradability of the tensile cable for oil exploitation are improved; the material is composed of polylactic acid, a polyhydroxyalkanoate bio-based polymer matrix and a plurality of high-performance additives, conventional synthetic fiber reinforcement is included, natural fibers are introduced to be compounded with a bio-based polymer material, and the unique fiber structure and surface performance of the material can form good interaction with bio-based polymers, so that the high-performance composite material is obtained. Therefore, the strength and toughness of the material are improved.
Owner:YANGZHOU TIANDI WIRE & CABLE CO LTD
Rare earth modified in-situ reinforced particle reinforced aluminum-based composite material and preparation method thereof
The invention relates to the technical field of metal materials, and particularly provides a rare earth modified in-situ reinforced particle reinforced aluminum-based composite material and a preparation method thereof.The preparation method of the rare earth modified in-situ reinforced particle reinforced aluminum-based composite material comprises the steps that reactants and rare earth oxide are mixed, pressed into blocks and dried, and reactant blocks are obtained; the reactant blocks are added into the aluminum alloy melt for a high-temperature self-propagating reaction, in-situ reinforced particles are generated, and particle reinforced aluminum matrix composite melt is obtained; and degassing the particle reinforced aluminum matrix composite melt, and preparing the rare earth modified in-situ reinforced particle reinforced aluminum matrix composite by adopting a near liquidus casting method. According to the preparation method, micron-sized reinforced phase particles are generated in situ under the conventional casting condition by utilizing the high-temperature self-propagating reaction of a reaction system and the activity effect of rare earth elements, and the aluminum-based composite material with the fine equiaxed crystal structure is prepared.
Owner:INNER MONGOLIA UNIV OF TECH
Slag system for ingot pulling type electroslag remelting nitrogen control austenitic stainless steel, preparation method and use method
PendingCN119194088Alow melting pointhigh resistivityProcess efficiency improvementSS - Stainless steelElectro-slag remelting
The invention relates to the technical field of electroslag remelting slag. The invention discloses a special slag system for an ingot pulling type electroslag remelting nitrogen-controlled austenitic stainless steel ingot, which comprises the following components in percentage by mass: 45-50% of CaF2, 25-30% of Al2O3, 15-20% of CaO, 3-6% of MgO, 5-10% of SiO2 and the balance of impurities, and the content of the impurities is less than or equal to 1%. The binary alkalinity CaO / SiO2 is 1.5 to 4; the melting point of the special slag system is 1250-1280 DEG C, the viscosity value of the special slag system at the temperature of 1600 DEG C is 0.044-0.053 Pa.s, and the resistivity of the special slag system at the temperature of 1600 DEG C is 0.51-0.55 omega.cm. According to the slag system, by optimizing the components of the slag system, the physical and chemical properties of the slag system are further improved, the slag-metal reaction is inhibited, and the production process requirements of ingot pulling type electroslag remelting large stainless steel ingots are met. The produced nitrogen-controlled austenitic stainless steel ingot is good in surface quality and free of defects such as obvious pits, slag runners and double skins; and easily oxidized elements Al and Si in the steel in the remelting process are uniformly distributed in the height direction of the cast ingot, so that the uniformity of alloy textures is ensured.
Owner:DONGBEI SPECIAL STEEL GROUP +1
Phosphate inorganic intumescent flame-retardant coating for transformer substation or converter station as well as preparation method and application thereof
ActiveCN119220116AImprove high temperature resistanceOptimizing the curing processFireproof paintsCarbon layerPhosphate
The invention discloses a phosphate inorganic intumescent flame-retardant coating for a transformer substation or a converter station as well as a preparation method and application of the phosphate inorganic intumescent flame-retardant coating. The coating is prepared from the following raw materials in parts by mass: 30 to 50 parts of phosphate, 10 to 20 parts of modified glass powder, 5 to 20 parts of an inorganic flame retardant, 3 to 20 parts of filler, 5 to 10 parts of a curing agent and 3 to 10 parts of an auxiliary agent, the modified glass powder is prepared by mixing one or two of glass powder with the melting point of 500 DEG C and glass powder with the melting point of 700 DEG C with glass powder with the melting point of 350 DEG C and then modifying with a silane coupling agent. When the phosphate inorganic intumescent flame-retardant coating prepared by the invention is burnt at 1200 DEG C, an intumescent flame-retardant carbon layer can be generated, a good fireproof effect on a matrix material can be achieved, the temperature-resistant time at 1200 DEG C reaches 60 minutes or more, normal-temperature curing can be realized, and the environment-friendly property of the phosphate intumescent flame-retardant coating is improved due to no chromium element in the formula of the coating.
Owner:STATE GRID ANHUI ELECTRIC POWER CO LTD ELECTRIC POWER SCI RES INST
Flow battery stack bipolar plate and flow battery
PendingCN119481128Aimprove performanceConsistent trafficRegenerative fuel cellsCollectors/separatorsElectrical batteryMechanical engineering
The invention relates to the technical field of redox flow batteries, in particular to a flow battery electric pile bipolar plate and a flow battery. The flow battery stack bipolar plate comprises a bipolar plate body, the bipolar plate body is provided with more than two annular spiral grooves, each annular spiral groove forms an annular spiral flow channel, the annular spiral flow channels are used for flowing of electrolyte, the annular spiral flow channels are nested, each annular spiral flow channel is provided with a liquid inlet and a liquid outlet, and the liquid inlet and the liquid outlet are communicated with each other. A liquid inlet and a liquid outlet in each annular spiral flow channel are independent from each other; the annular spiral flow channels on the bipolar plate of the redox flow battery stack can be independently controlled and do not influence one another, the flowing speed, the flow and the distribution uniformity are completely kept consistent, and the performance of a redox flow battery is improved.
Owner:PINGGAO GRP CO LTD
Chemical-looping hydrogen production system for semi-coke tail gas
InactiveCN119549070Aadequate responseImprove hydrogen production efficiencyHydrogen separationChemical/physical processesAir velocityFluidized bed
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.
Owner:SHAANXI HENGLV RUNYUAN IND CO LTD
Preparation method and application of needle-shaped fluffy lead iodide composite nucleation interface
ActiveCN119263649AHigh crystallinityImprove stabilityOrganic compound preparationCarboxylic acid salt preparationDevice materialCrystallinity
The invention relates to the technical field of semiconductor devices, in particular to a preparation method and application of a two-step perovskite nucleation interface for inducing growth of needle-shaped three-dimensional fluffy lead iodide by taking a lactic acid protonated imidazolium salt modified electron transport layer as a nucleation template. Spin-coating a lactic acid protonated imidazolium salt solution on the SnO2 layer, and annealing to obtain a nucleation induction template; and then spin-coating a lead iodide solution on the surface, and annealing to obtain the needle-shaped three-dimensional fluffy lead iodide composite nucleation interface. According to the method, lactic acid protonated imidazolium salt is creatively used as a lead iodide nucleation site, and an induced needle-shaped three-dimensional fluffy lead iodide composite interface has remarkably enhanced wettability and hydrophobicity, so that on one hand, the crystallinity of the two-step perovskite thin film is revolutionarily improved; the wettability of the organic mixed solution in the second step is effectively improved, so that the perovskite crystal is fully nucleated and grows; and on the other hand, the strong hydrophobicity is beneficial for preparing a high-quality perovskite thin film in the air, and the stability of the thin film and the device is greatly improved.
Owner:GUANGDONG UNIV OF TECH
Phosphorus-based vulcanized polyacrylonitrile negative electrode material as well as preparation method and application thereof
PendingCN119275260AImprove efficiencySolve the bloat problemCell electrodesSecondary cellsVulcanizationAcrylonitrile
The invention provides a phosphorus-based vulcanized polyacrylonitrile negative electrode material as well as a preparation method and application thereof. The specific preparation method of the phosphorus-based vulcanized polyacrylonitrile negative electrode material comprises the following steps: dissolving phosphorus and vulcanized polyacrylonitrile in an organic solvent in an inert atmosphere, and uniformly stirring to obtain a uniformly mixed sample; adding grinding balls into the uniformly mixed sample, and carrying out wet ball milling in a ball mill to obtain a ball-milled product; carrying out vacuum drying treatment on the ball-milled product to obtain a vacuum-dried product; and adding grinding balls into the product subjected to vacuum drying, and carrying out dry ball milling in a ball mill to obtain a product, namely the phosphorus-based vulcanized polyacrylonitrile negative electrode material. According to the phosphorus-based vulcanized polyacrylonitrile negative electrode material prepared by the preparation method disclosed by the invention, the problems of expansion and capacity fading of a negative electrode plate in a circulation process can be solved while the capacity is improved.
Owner:SHENGHONG KINETIC ENERGY TECH (TAIZHOU) CO LTD
Electrically-driven reactor based on conductive heating integral honeycomb structure and application of electrically-driven reactor
ActiveCN119140016Aemission reductionSmall footprintChemical/physical processesBulk chemical productionPtru catalystElectrical conductor
The invention discloses an electrically driven reactor based on a conductive heating integral honeycomb structure, which comprises a cylinder, an integral honeycomb structure heater capable of generating Joule heat under a power-on condition is arranged in the cylinder, the honeycomb structure heater is cylindrical, longitudinal fluid channels which are regularly arranged are formed in the honeycomb structure heater, and catalyst particles are filled in the channels; a thermal insulation material is filled between the outer wall of the honeycomb structure heater and the inner wall of the cylinder body; an upper sealing head and a lower sealing head are respectively arranged at the upper end and the lower end of the cylinder body; a gas distributor is arranged between the upper sealing head and the cylinder body, and a catalyst supporting plate is arranged between the lower sealing head and the cylinder body; a strip-shaped drainage conductor is arranged on the outer wall of the honeycomb structure heater and is led out of the reactor through a wire interface to be connected with an external power supply. The invention also discloses an application of the electrically driven reactor. The electrically-driven reactor is simple in structure, convenient to operate, energy-saving, environment-friendly and beneficial to popularization and application in production practice.
Owner:EAST CHINA UNIV OF SCI & TECH
Fluidized bed and bubbling bed combined biomass gasification device
InactiveCN119193198Aadequate responseImprove gasification efficiencyFluidized bed combustionEnergy inputFixed bedAir blower
The invention relates to a fluidized bed and bubbling bed combined biomass gasification device, which comprises a biomass gasification device, a fuel feeding system, an ignition system, a bed material supply system, a cyclone separator, a special biomass high-temperature gas boiler, an air blower, an induced draft fan and the like. Biomass gas is produced in a mode of combining a fluidized bed and a bubbling bed and is used by a special boiler. According to the device, an existing fixed bed gasification furnace cooling device is omitted, biomass high-temperature fuel gas is used as a medium, more heat is utilized in a rear fuel gas special boiler, and the water cooling jacket cooling loss of the fixed bed gasification furnace is reduced to a great extent. And meanwhile, steam generated by the rear-end boiler is fed into the bubbling bed to further gasify a by-product (charcoal) of fluidized bed gasification reaction, so that more heat energy is released, the biomass gasification efficiency is greatly improved, and the biomass energy is more fully utilized.
Owner:FUJIAN DONGGUO ENERGY SAVING SCI & TECHCO
Preparation device for high-viscosity hydroxypropyl starch ether
ActiveCN222606281Uquality improvementincrease reaction rateChemical/physical/physico-chemical stationary reactorsFeed devicesReaction rateEther
The utility model discloses a preparation device for high-viscosity hydroxypropyl starch ether, which belongs to the technical field of chemical equipment, aims to solve the problem that the adding speed of raw materials cannot be adjusted according to the reaction rate, and comprises a reaction kettle, supporting legs are fixedly mounted at the bottom of the reaction kettle, and an air adding device is fixedly mounted on the right side of the top of the reaction kettle. A feeding mechanism is arranged on the left side of the top of the reaction kettle, and an adjusting mechanism is mounted on the feeding mechanism; according to the utility model, through the arrangement of the adjusting mechanism, when starch raw materials are added into the reaction kettle, the adding speed of the starch raw materials can be adjusted according to the specific reaction process in the reaction kettle, so that the reaction speed of the starch raw materials in the reaction kettle is improved, the starch raw materials are fully reacted, and the product quality is further improved; in the process of adding the raw materials into the reaction kettle, the adding speed of the raw materials can be adjusted, meanwhile, blockage can be avoided when the raw materials are added, and thus the smooth completion of the reaction is guaranteed.
Owner:SHENZHEN TONGZHOUDA TECH DEV CO LTD
Method for acid leaching of fluorine and lithium in cathode alkaline leaching residues and combined treatment of alkaline leaching waste liquid
ActiveCN119240655AImprove leaching rateachieve recyclingCarbon preparation/purificationAluminium fluoridesLithiumPregnant leach solution
The invention relates to a method for acid leaching of fluorine and lithium in cathode alkaline leaching residues and combined treatment of alkaline leaching waste liquid, and belongs to the technical field of aluminum electrolysis waste cathode recycling. The method comprises the steps that the alkaline leaching residues of aluminum electrolysis waste cathodes are added into an AlCl3 solution for ultrasonic leaching, hydrochloric acid is used for adjusting the leaching pH value, and after leaching, solid-liquid separation is conducted to obtain primary carbon powder and first filtrate; returning the first filtrate to a system for recycling to obtain a final leachate with relatively saturated electrolyte content; washing the primary carbon powder with deionized water to obtain high-purity carbon powder; and the final leaching solution and the waste cathode alkali leaching solution are mixed and precipitated to obtain lithium-containing cryolite and a precipitation solution, and the precipitation solution can be returned to an alkali leaching system to be used for preparing alkali liquor. According to the method, valuable substances in the alkaline leaching residues and the alkaline leaching waste liquid in the aluminum electrolysis waste cathodes are effectively recycled, meanwhile, harmless treatment of the waste cathodes is achieved, and the recycling process of the valuable substances in the alkaline leaching residues and the alkaline leaching waste liquid in the aluminum electrolysis waste cathodes is greatly simplified.
Owner:KUNMING UNIV OF SCI & TECH
Double transition metal / chitosan-based carbon aerogel composite material as well as preparation method and application thereof
PendingCN119324233ALarge specific surface areaimprove distributionFuel and secondary cellsCell electrodesNickel saltIron salts
The invention discloses a double transition metal / chitosan-based carbon aerogel composite material and a preparation method and application thereof.The method comprises the steps that a nitrogen source and transition metal salt are added into a hydrochloric acid solution of chitosan, stirred, dissolved and evenly dispersed to prepare a mixed solution, the mixed solution is subjected to freeze drying, and the double transition metal / chitosan-based carbon aerogel composite material is obtained. Chitosan aerogel containing transition metal and a nitrogen source is prepared; the transition metal salt is any two of ferric salt, cobalt salt and nickel salt; the chitosan aerogel containing the transition metal and the nitrogen source is placed in a methanol solution of 2-methylimidazole, after vibration treatment and drying, the chitosan aerogel is placed in a nitrogen atmosphere to be subjected to heat treatment, and the double-transition-metal / chitosan-based carbon aerogel composite material is prepared. The preparation method is simple and reasonable in design, the prepared material has good specific surface area and porosity, the formed metal-nitrogen double active center effectively improves the adsorption performance of the material, and the material has good catalytic performance.
Owner:SHAANXI UNIV OF SCI & TECH
Hydrogen fluoride gas absorption device
ActiveCN222173619UExtension of timeavoid overdoseDispersed particle separationHydrogen fluorideGear drive
The utility model discloses a hydrogen fluoride gas absorption device, which comprises a box body, an exhaust pipe fixed on the side wall of the box body, and a gas inlet pipe fixedly inserted at the top of the box body, a rotating rod is rotatably inserted on the inner side wall of the box body, a rotating disc is fixedly connected on the rotating rod, the end part of the rotating disc is fixedly connected with a sealing disc, and the sealing disc is positioned in the gas inlet pipe. The sealing disc can rotate in the gas inlet pipe, a through opening is formed in the rotating disc, and when the through opening corresponds to the exhaust pipe in position, gas generated by reaction in the box body is exhausted. According to the utility model, the power assembly drives the driven gear to rotate, and the driven gear drives the rotating disc to rotate through the rotating rod, so that the through hole corresponds to the exhaust pipe in position, the purpose of intermittent exhaust is realized, and meanwhile, when the exhaust pipe is shielded by the rotating disc, the reaction time of hydrogen fluoride gas in the box body is prolonged, the hydrogen fluoride gas fully reacts with sodium hydroxide, and the purification effect is improved; the sealing disc at the other end of the rotating rod rotates in the air inlet pipe, and the intermittent air inlet purpose is achieved.
Owner:XUANCHENG HENGTAI ELECTRONICS CHEM MATERIAL
Sludge low-temperature oxidation treatment system and method thereof
ActiveCN121990745Asuppress generationAchieve source controlSludge treatment by thermal conditioningSludge treatment by oxidationAutomatic controlSludge
The invention discloses a sludge low-temperature oxidation treatment system and method. The system comprises a pretreatment unit, a feed lifting mechanism, a low-temperature oxidation furnace, a flue gas purification unit and an automatic control unit. The low-temperature oxidation furnace is divided into a feeding area, a low-temperature oxidation area and an air distribution and slag discharge area from top to bottom, an air distribution plate is provided with air outlets which are uniformly arrayed, the temperature of the low-temperature oxidation area is controlled to be 420-480 DEG C, and generation of dioxin is inhibited from the source. The pretreatment unit is used for mixing sludge, biomass and quartz sand to form a loose breathable material to prevent the sludge from hardening; the method comprises the steps of material mixing, continuous feeding oxidation, temperature closed-loop regulation and control, flue gas purification and ash treatment, high-water-content municipal sludge can be stably treated, the energy consumption is low, the dioxin generation amount is low, flue gas emission reaches the standard, ash can be recycled, and the method is suitable for large-scale municipal sludge harmless treatment.
Owner:XIANGSHAN DMAN MASCH CO LTD
A preparation process of barium hydroxide octahydrate
ActiveCN118954565Bincrease surface areaincrease contact areaCalcium/strontium/barium oxides/hydroxidesPhysical chemistryEngineering
The present invention relates to the technical field of preparation of barium hydroxide, and specifically to a process for preparing barium hydroxide octahydrate, comprising the following steps: (1) crushing a raw material of witherite, uniformly mixing the crushed witherite with coal powder, charcoal and silicon dioxide, calcining and keeping warm to obtain crude barium oxide; (2) dispersing the crude barium oxide in water, filtering and washing the residue with deionized water, desulfurizing the obtained filtrate with a desulfurizer, filtering and washing to obtain a barium hydroxide solution, and concentrating, cooling, crystallizing, centrifuging and drying to obtain the barium hydroxide solution. The purpose of the present invention is to provide a process for preparing barium hydroxide octahydrate, aiming to improve the total leaching rate of barium and the purity of the product.
Owner:SHANDONG CHENAN CHEM CO LTD
Method for preparing silicon carbide from silicon waste and waste lithium battery graphite anode
PendingCN119660745AHigh value-added utilizationlow costCarbon compoundsWaste accumulators reclaimingCarbide siliconElectrical battery
The invention discloses a method for preparing silicon carbide from a silicon waste material and a waste lithium ion battery graphite anode. The method specifically comprises the following steps: (1) respectively carrying out ball milling and mixing on the diamond wire cutting silicon waste material and the crushed and screened waste lithium ion battery graphite anode; (2) high-temperature smelting, ball milling and roasting; and (3) placing in an acid, stirring, leaching, centrifuging, washing, drying and ball-milling to obtain the high-efficiency leaching agent. According to the method, the diamond wire cutting silicon waste and the waste lithium ion battery graphite anode are used as preparation raw materials, silicon carbide is prepared and purified through the processes of ball milling, material mixing, smelting, roasting, acid leaching, centrifuging, drying and the like, and finally high-purity nanoscale silicon carbide particles are obtained. The recycling of the diamond wire cutting silicon waste and the graphite anode of the waste lithium ion battery not only can reduce resource waste and environmental pollution and improve the utilization rate of the waste, but also can generate considerable economic benefits.
Owner:KUNMING UNIV OF SCI & TECH
Efficient hydrogen sulfide gas absorption device
ActiveCN119215631AEfficient use ofadequate responseDispersed particle separationFungicidePhysical chemistry
The invention relates to the technical field of hydrogen sulfide purification devices, and discloses an efficient hydrogen sulfide gas absorption device which comprises a washing tower, a bioreactor is arranged on one side of the washing tower, a settler is arranged on one side of the bioreactor, and a first communicating pipe is fixedly connected to the position, close to the bottom, between the washing tower and the bioreactor. A first communicating pipe is fixedly connected between the washing tower and the bioreactor, a second communicating pipe is fixedly connected between the washing tower and the bioreactor and close to the opposite side, a third communicating pipe is fixedly connected between the bioreactor and the settler and close to the opposite side, liquid pumps are fixedly arranged on the first communicating pipe, the second communicating pipe and the third communicating pipe respectively, and an air inlet pipe is fixedly connected to one side of the washing tower. According to the high-efficiency hydrogen sulfide gas absorption device disclosed by the invention, the separated solid biological sulfur can be used as a sulfur-based bactericide or a fertilizer sulfur component through overall cooperative use, and can react with hydrogen sulfide gas more sufficiently and efficiently.
Owner:BAYANNAOER CITY FEISHANG COPPER IND CO LTD
Solvent recovery device based on macroporous resin adsorption
ActiveCN222550184Uincrease contact areaadequate responseSolid sorbent liquid separationPhysical chemistryElectric machinery
The utility model discloses a solvent recovery device based on macroporous resin adsorption, relates to the technical field of resin solvent recovery, and adopts the technical scheme that a flattening mechanism comprises a plurality of groups of motors, one side of each group of motor is mounted on one side of a shell, and the other side of each group of motor is mounted on the other side of the shell; output shafts of the multiple sets of motors penetrate through one side of the shell and are connected with one end of a screw rod, the other end of the screw rod is installed in the shell through a bearing, the outer surface of the screw rod is in threaded connection with a threaded seat, and the lower portion of a transverse plate is connected with a scraping plate through an adjusting mechanism. The scraper is driven to move, macroporous resin placed above the filter plate is flattened, the contact area of the macroporous resin and high-temperature steam is increased, the macroporous resin can fully react with the high-temperature steam, and therefore the problem that the extraction rate of a solvent is reduced due to the fact that part of the macroporous resin and the high-temperature steam are not fully reacted is solved.
Owner:JIANGSU YONGAN CHEM CO LTD
Parameter calculation method for tail gas inlet of tail gas incinerator
ActiveCN119537741Aadequate responseImprove processing efficiencyIncinerator apparatusComplex mathematical operationsCombustionMechanical engineering
The invention belongs to the technical field of tail gas incineration, and particularly relates to a parameter calculation method for a tail gas inlet of a tail gas incinerator. In order to solve the problems that in the using process of an existing incinerator, tail gas cannot be controlled, and the tail gas cannot be fully combusted, according to the gas flow calculation principle, the circumferential aperture ratio calculation principle and the rotational flow strength calculation principle, the combustion of the tail gas is controlled; the number of the tail gas inlets in each row and the gas inlet direction of the tail gas inlets are calculated in combination with parameters of the incinerator, so that rotating gas flow is generated, the tail gas is fully combusted in the incinerator, under the condition that flames are kept stable, the tail gas reaction is more sufficient, the fuel utilization rate and the tail gas treatment efficiency are improved, and the combustion efficiency is improved. And the length of the hearth can be shortened under the condition of keeping the same treatment efficiency, so that the cost is saved, and the occupied area is saved.
Owner:CHINA PETROLEUM & CHEMICAL CORP +2
Efficient biomass thermal cracking fluidized bed reactor
InactiveCN119144351Aadequate responseavoid inadequate exposureBiofuelsSpecial form destructive distillationPtru catalystAir velocity
The invention discloses an efficient biomass thermal cracking fluidized bed reactor, and particularly relates to the technical field of fluidized bed reactors, the efficient biomass thermal cracking fluidized bed reactor comprises a tank body, an air duct is arranged in the tank body, the air duct is provided with a plurality of flow adjusting mechanisms in linear arrangement, and the flow adjusting mechanisms are used for adjusting the air speed; a material receiving plate is arranged between the air duct and the tank body, the material receiving plate corresponds to the flow adjusting mechanism, and a plurality of air inlet mechanisms which are uniformly distributed are arranged on the material receiving plate; the flow adjusting mechanism comprises a plurality of mounting boxes, the mounting boxes are arranged in the air duct, round holes are formed in the surfaces of the mounting boxes, two sliding plates which are symmetrical about the center of the round holes are slidably connected into the mounting boxes, and a synchronous assembly is arranged in the mounting boxes and used for driving the two sliding plates to move at the same time; through cooperation of the flow adjusting mechanism, the material receiving plate and the air duct, materials can be uniformly dispersed, and gas and a catalyst are fully reacted.
Owner:ANQING NORMAL UNIV