3553results about How to "Improve adsorption capacity" patented technology

The invention belongs to the field of biochar adsorbing materials, and relates to a method for preparing modified biochar with aquatic plant waste and hematite. The method includes the following steps: (1) naturally drying aquatic plants prior to crushing to obtain aquatic plant powder; (2) crushing the hematite to obtain hematite powder; (3) weighing the hematite powder prior to putting the hematite powder into deionized water, and performing ultrasonic treatment to obtain suspension; (4) weighing the aquatic plant powder, soaking the aquatic plant powder in the suspension, and stirring and drying to obtain fully mixed aquatic plant and hematite mixture; (5) weighing the fully mixed aquatic plant and hematite mixture, putting the mixture in a batch-type atmosphere furnace, and feeding nitrogen into the furnace; performing temperature programming to the target temperature, and maintaining final-temperature pyrolysis; after the pyrolysis process is finished, obtaining the target product, namely the modified biochar. The modified biochar has strong adsorbability in nitrate and phosphate, high in stability and reusable.

The invention discloses a bio-based foam adsorption material as well as a preparation method and adsorption application thereof. The bio-based polymer is used as a foam skeleton, the adsorbent with a large specific surface area is added to further improve the foam adsorption capacity, the cross-linking agent and the reinforcing filler improve the overall strength of the foam, and the bio-based foam adsorption material with the high adsorption capacity is obtained. The bio-based foam disclosed by the invention is light in weight, controllable in hydrophilicity and hydrophobicity, and capable of separating and removing pollutants such as oil and organic dye. The foam has high adsorption capacity and good cyclic adsorption capacity, can be repeatedly used, is biodegradable, does not pollute the environment, can effectively adsorb dangerous chemicals existing in a water body, does not cause secondary pollution, and can be used for decontamination treatment of organic pollutants in industrial wastewater.

The invention discloses a microencapsulation repairing agent and an intelligent self-repairing ultrahigh-strength ultrahigh-toughness cement-based structural material, the microencapsulation repairing agent is mainly composed of a humidity-responsive outer layer, a pH-responsive middle layer and a temperature-responsive inner layer, and the outer layer is modified with a silane coupling agent. The intelligent self-repairing ultrahigh-strength ultrahigh-toughness cement-based structural material is mainly prepared from the microencapsulated repairing agent, nano carbon black, nano montmorillonite, nano cellulose and other raw materials. According to the invention, by introducing the self-repairing microcapsule with a specific structure and materials such as nano carbon black, nano montmorillonite and nano cellulose, the strength, toughness and durability of the concrete are remarkably improved, and the concrete has an intelligent self-repairing function.

The invention belongs to the technical field of crystal growth, and provides a low-resistivity silicon carbide single crystal growth method and system and a single crystal, silicon carbide powder is uniformly paved at the bottom of a graphite crucible, metal carbide material particles are uniformly paved on the surface of the silicon carbide powder, and silicon carbide seed crystals are adhered to the top of the graphite crucible; the graphite crucible is sealed, and the interior of the graphite crucible is vacuumized; heating the graphite crucible subjected to vacuumizing treatment, filling carrier gas into the graphite crucible, then slowly replacing the carrier gas with doped source gas, slowly increasing the growth pressure to a set pressure, and growing a buffer layer; after the growth of the buffer layer is completed, changing the growth condition to grow the heavily doped silicon carbide single crystal; and after the growth of the crystal is completed, cooling the graphite crucible subjected to vacuumizing treatment, so that the crystal is naturally cooled, and the low-resistivity silicon carbide single crystal is obtained. The doping concentration of the silicon carbide single crystal can be improved, and the resistivity of the silicon carbide material can be reduced.

The invention relates to the field of functional master batch materials, in particular to a phase-change energy temperature-adjusting fiber master batch and a fat-burning fabric thereof. The phase-change energy temperature-regulating fiber master batch is prepared from a composite phase-change material and polyethylene glycol terephthalate slices through melt extrusion and granulation, the fat-burning fabric is prepared from the phase-change energy temperature-adjusting fiber master batch and polyethylene glycol terephthalate slices through melt spinning, network compounding and weaving processing. By introducing the microencapsulated phase-change material and the high-thermal-conductivity filler, in the melt extrusion process, the microencapsulated phase-change material and the high-thermal-conductivity filler can be uniformly dispersed in the matrix material to form stable fiber master batches, form an efficient thermal-conductivity structure and provide excellent thermal regulation performance; meanwhile, microencapsulation can improve the stability and dispersity of the phase-change material, and the fat-burning fabric is prepared through melt spinning and weaving of fiber master batches, so that the heat-conducting property of the product is improved, and the continuous fat-burning effect is achieved.

The invention relates to a preparation method of an amino-functionalized metal organic framework material and application of the prepared material to separation of CO2 / N2 and CO2 / CH4. The preparation method comprises the following steps: dissolving adenine and copper nitrate trihydrate in N, N '-dimethylacetamide to obtain a first mixed solution; dissolving carboxylic acid and potassium carbonate in deionized water to obtain a second mixed solution; and adding the second mixed solution into the first mixed solution, carrying out stirring reaction, and carrying out vacuum drying on an obtained solid product to obtain the amino-functionalized metal organic framework material. The amino-functionalized metal organic framework material prepared by the invention has high CO2 adsorption selectivity and adsorption capacity, and also has good acid-resistant, alkali-resistant and water-resistant stability. The amino-functionalized metal organic framework material prepared by the preparation method disclosed by the invention is applied to industrial CO2 adsorption separation and has an excellent separation effect.

The single-person oxygen generator comprises a compressor for compressing air and an adsorption assembly for separating nitrogen and oxygen in the air, the adsorption assembly comprises two adsorption tanks, a circulation tank is arranged between the two adsorption tanks, and a spiral sleeve, a rotating rod, a feeding plate and a collecting tank are arranged in the circulation tank; the rotating rod is coaxially and slidably connected with the spiral sleeve, the feeding plate is in threaded connection with the spiral sleeve, the collecting tank is located below the feeding plate, and the feeding plate can move in the circulation tank to screen out broken bodies and powder in molecular sieve particles and change positions of the screened-out molecular sieve particles. The circulation tank of the oxygen generator is used for screening broken bodies and powder of molecular sieve particles, meanwhile, the feeding plate can move the screened molecular sieve particles from the air inlet end to the air outlet end, the adsorption energy efficiency of the molecular sieve at the air inlet end is kept, and the collecting tank in the circulation tank can collect and timely treat the screened broken bodies and powder.

The invention provides a southern red soil dry land deacidification soil conditioner and a preparation method thereof, and belongs to the technical field of soil conditioners. The preparation method comprises the following steps: embedding bacillus subtilis, bacillus licheniformis and bacillus amyloliquefaciens to prepare bacterial microspheres, adding the bacterial microspheres into gel formed by carboxymethyl chitosan and silk fibroin peptide to prepare sustained-release bacterial microsphere gel, uniformly mixing the sustained-release bacterial microsphere gel with porous silicon dioxide loaded with basalt and charcoal, and drying to prepare the acid-reducing soil conditioner for the southern red soil dry land. The acid-reducing soil conditioner for the southern red soil dry land not only improves the pH value of the soil, but also can loosen the soil and improve the air permeability of the soil to a certain extent, and promotes the absorption of crops to moisture and nutrient elements by improving the physical and chemical properties of the soil, so that the normal growth of the crops is ensured, and the acid-reducing soil conditioner has a wide application prospect.

The invention relates to an antibacterial and anti-fouling ceramic product glaze and a preparation method, and belongs to the technical field of ceramic product glaze preparation, the ceramic product glaze comprises the following raw materials: a component A: a base material, a water glass solution, a sodium bicarbonate solution, a gadolinium nitrate solution, a europium nitrate solution, a silver nitrate solution and sodium cocoate; and the component B comprises the following components: dimethoxy methyl (3, 3, 3-trifluoropropyl) silicon, polysiloxane, dodecenyl succinic anhydride, gamma-methacryloxy propyl trimethoxy silane and white gasoline. Silver nitrate serves as a main material, europium nitrate serves as an auxiliary material, gadolinium nitrate excites the activity of silver and europium ions, and the silver nitrate, the europium nitrate and the gadolinium nitrate cooperate, so that the prepared ceramic product glaze has excellent antibacterial performance; sodium cocoate is added to form a steric hindrance effect, so that agglomeration among system particles is inhibited, and the antibacterial property of the glaze is enhanced; according to the anti-fouling glaze disclosed by the invention, the dimethoxymethyl (3, 3, 3-trifluoropropyl) silicon and the polysiloxane are added, so that the prepared glaze has a lasting anti-fouling effect.

The invention provides a method for efficiently synthesizing basic nickel carbonate, and belongs to the technical field of chemical preparation. Comprising the following steps: (1) preparing a mixed solution of sodium carbonate and sodium hydroxide; (2) under low-temperature and high-speed stirring conditions, dropwise adding a nickel salt solution into the mixed solution, adding a competitive adsorbent, adjusting the pH value of the solution, then heating, continuing stirring reaction, separating the competitive adsorbent by a magnet, centrifuging, washing and collecting prepared primary basic nickel carbonate; and (3) recrystallizing the primary basic nickel carbonate in an ethanol water solution, and drying to obtain the basic nickel carbonate. According to the preparation method disclosed by the invention, the content of impurity ions in the product is reduced, so that the high-purity basic nickel carbonate can be prepared, the synthesis efficiency is high, the production cost is relatively low, the method is green and environment-friendly, the competitive adsorbent can also be repeatedly utilized and recycled, the production cost is reduced, and the method has a wide application prospect.

The invention relates to the technical field of catalysts for gas purification, in particular to a hierarchical pore metal-based catalytic adsorbent as well as a preparation method and application thereof. The invention discloses an integrated preparation method combining a sol-gel method and a template method, which comprises the following steps of: adding a template agent before forming gel, adding a proper amount of ammonia water in an aging process, accurately controlling other reaction conditions and a raw material ratio, and controlling a spatial confinement effect of the template method and a chemical reaction in a sol-gel process to obtain a sol-gel composite material. The morphology and size of the catalytic adsorbent can be accurately regulated and controlled, the hierarchical pore metal-based catalytic adsorbent with a microporous structure as a main material and mesopores and macropores as coexistence is finally prepared, the hierarchical pore structure provides rich adsorption sites and catalytic activity centers, and the hierarchical pore metal-based catalytic adsorbent has high adsorption capacity, high selectivity, good catalytic activity, good stability and easy regeneration.

The invention discloses a ZnFeP-particle gradient abrasion-resistant chemical composite coating and a preparation method of the ZnFeP-particle gradient abrasion-resistant chemical composite coating. The ZnFeP-particle gradient abrasion-resistant chemical composite coating is divided into a passivation layer, a low-iron ZnFeP-particle chemical composite coating and a high-iron ZnFeP-particle chemical composite coating from outside to inside, and a gradient coating with the corrosion potential from low to high is formed; the content of iron in the low-iron ZnFeP-particle chemical composite coating ranges from 0.03 wt% to 1.0 wt%, the thickness of the low-iron ZnFeP-particle chemical composite coating ranges from 8 micrometers to 18 micrometers, and the hardness of the low-iron ZnFeP-particle chemical composite coating ranges from 150 HV to 300 HV. The content of iron in the high-iron ZnFeP-particle chemical composite coating ranges from 5 wt% to 30 wt%, the thickness ranges from 8 micrometers to 18 micrometers, and the hardness ranges from 500 HV to 650 HV. By means of the ZnFeP-particle gradient abrasion-resistant chemical composite coating, a metal component can be resistant to abrasion and corrosion, and therefore the service capacity of the metal component such as electric power fittings in the abrasion working condition is obviously improved.

The invention discloses a Ca / Mg-based modified biochar material and a preparation method and application thereof, and the preparation method comprises the following steps: pretreatment: drying a biomass material shaddock peel, crushing, sieving, washing and drying, then carrying out acid leaching activation, washing again and drying to obtain high-activity biomass powder for later use; dipping modification: fully mixing the high-activity biomass powder obtained in the pretreatment step with CaO and MgO, adding distilled water, dipping under heating and stirring conditions, then carrying out solid-liquid separation, washing a filter cake for multiple times, freeze-drying, and sieving to obtain an intermediate product; the intermediate product is calcined, naturally cooled, washed and dried, and the Ca / Mg-based modified bimetallic modified charcoal material is obtained and can be applied to adsorption of phosphate in a wastewater solution as an adsorbent. The preparation method is simple, the raw materials are easy to obtain, the cost is low, the material stability is good, the pH adaptability is good, the adsorption effect is good, and the method is suitable for water environments with more complex pollution factors.

The invention belongs to the technical field of wastewater filtering treatment, and particularly discloses a high-adsorbability activated carbon adsorption device which comprises a self-adaptive stored power release mechanism, an energy storage impact mechanism, an induction type automatic valve clack mechanism and a main body filtering assembly, the self-adaptive stored power release mechanism is arranged on the energy storage impact mechanism, and the induction type automatic valve clack mechanism is arranged on the main body filtering assembly. The energy storage impact mechanism is arranged on the main body filter assembly, and the induction type automatic valve clack mechanism is arranged in the main body filter assembly. On the basis of traditional activated carbon adsorption, the split nut is designed, sliding control over the impact sliding plate is achieved by controlling opening and closing of the split nut, and elastic potential energy can be accumulated for the impact spring through slow sliding of the impact sliding plate; and after the elastic potential energy is released, the sliding plate is impacted to push water flow to reversely flow at a relatively high speed, so that the filter element is reversely washed and cleaned.

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.

The invention discloses an adsorption heat storage material with a multi-stage stepped pore structure and a preparation method of the adsorption heat storage material, according to the material, a metal foam matrix is combined with the multi-stage pore structure, and the storage and release efficiency of heat energy is remarkably improved. Specifically, the metal foam matrix is composed of a plurality of metal foam layers with different porosities, and the porosities are gradually increased in the heat source direction, so that the heat resistance is effectively reduced, and the diffusion of adsorbate is accelerated. The adsorbent coating is coated with an adsorption material mixture containing a template agent, and is subjected to drying and roasting treatment to form a multi-stage pore structure comprising macropores, mesopores and micropores, so that the adsorption diffusion speed and the adsorption capacity are improved. The material not only improves the heat energy storage and energy release capabilities, but also optimizes the diffusion rate of adsorbate. According to the preparation method, through simple and convenient processes such as splicing of the metal foam layer and coating of the adsorbent, the production cost is reduced, the preparation process is efficient and controllable, and wide application prospects are achieved.

The utility model relates to an automatic sorting device for lens disassembly, which relates to the technical field of lens disassembly and comprises a storage bin used for storing lenses to be disassembled and a feeding and discharging Y shaft arranged on one side of the storage bin and used for moving the lenses in a tray out to a working area. The jacking and clamping double-station assembly comprises a clamping head for clamping a to-be-disassembled lens, a lead screw motor for ejecting out to-be-sorted components in the lens in the direction below the clamping head, a component pre-pressing plate piece for pre-pressing the products to prevent the products from scattering and inclining, and a pre-pressing mechanism switching shaft for adjusting the position of a pre-pressing mechanism. An inverted U-shaped support plate is arranged on the top surface of the free end of the component pre-pressing plate piece, the inner wall of the U-shaped support plate is connected with a vacuum chuck tailstock through a lifting component, the bottom surface of the vacuum chuck tailstock is connected with a vacuum chuck piece through a pipeline longitudinally penetrating through the component pre-pressing plate piece, and the vacuum chuck piece adsorbs a component in a lens in a product.

The invention discloses an antibacterial moisture-absorption softening agent and a preparation method thereof. The preparation method comprises the following preparation steps: 1, preparing a softener; the preparation method comprises the following steps: S1, reacting toluene diisocynate with polyethylene glycol in a solvent to generate an intermediate I; s2, reacting the intermediate I with tetramethyldipropylenetriamine in an inert gas atmosphere to generate an intermediate II; s3, carrying out reaction on the hydrogen-containing silicone oil, allyl polyoxyethylene ether and allyl epoxy terminated polyoxyethylene ether in a solvent and a catalyst to generate modified silicone oil; and S4, carrying out a reaction on the modified silicone oil and a norfloxacin aqueous solution in a solvent, then adding the intermediate II into a reactant, carrying out a reaction for a period of time, and removing impurities to obtain the antibacterial moisture-absorption softening agent.

The invention relates to the technical field of formaldehyde adsorption, in particular to a preparation method of modified activated carbon for removing formaldehyde, which comprises the following steps: S1, performing acidification pretreatment on coconut shell charcoal, and grafting the pretreated coconut shell charcoal with polyethyleneimine to obtain activated carbon loaded with polyethyleneimine; s2, carrying out dipping treatment and cyclohexanol treatment on the activated carbon loaded with polyethyleneimine to obtain functionalized activated carbon; s3, reacting the magnesium-aluminum hydrotalcite with a quaternary ammonium salt solution and a sodium benzenesulfonate solution to obtain modified hydrotalcite; reacting the modified hydrotalcite with a vinyl silane coupling agent to obtain vinyl hydrotalcite; s4, the vinyl hydrotalcite and 4-amino-3-hydrazino-5-sulfydryl-triazole are subjected to a reaction, and secondary modified hydrotalcite is obtained; and S5, dispersing the secondary modified hydrotalcite and the functionalized activated carbon in water, and adding glutaraldehyde to obtain the modified activated carbon. The modified activated carbon prepared by the preparation method disclosed by the invention realizes selective recognition, efficient adsorption and catalytic degradation of formaldehyde.

The invention provides sodium-ion battery positive electrode slurry, a positive electrode plate, a preparation method of the positive electrode plate and a sodium-ion battery, and relates to the technical field of sodium-ion batteries, the sodium-ion battery positive electrode slurry comprises a positive electrode active material, a conductive agent, a binder, a composite dispersant and a solvent; the composite dispersing agent is a product formed by mechanically mixing an ionic dispersing agent and a polyoxyethylene ether nonionic dispersing agent or a compound formed by chemically reacting the ionic dispersing agent and the polyoxyethylene ether nonionic dispersing agent, and the ionic dispersing agent is polyacrylic acid and a derivative thereof; and the positive electrode active material is a polyanion material. According to the positive electrode slurry disclosed by the invention, the ionic dispersant of polyacrylic acid and a derivative thereof and the polyoxyethylene ether nonionic dispersant are compounded for use, so that the positive electrode slurry has good dispersity and stability, the provided positive electrode slurry is good in dispersity, the resistance of a positive electrode plate is low, and the cycle performance of the sodium ion battery is excellent.

The invention discloses an application of a microporous and mesoporous metal organic framework microsphere material in organic dye and heavy metal wastewater. According to the invention, mesoporous spheres formed by self-assembly of a block copolymer are used as objects, and regular and highly dense mesoporous micron-sized particles of a self-assembled amphiphilic block copolymer (PS-b-PAA) in a selective solvent mixture are used as a template; uiO-66-NH2 and ZIF-67 micron-sized microspheres which are formed by mutual growth of metal-organic framework nanocrystals and have two pore diameters of micropores and mesopores at the same time are produced, and larger carrying capacity is obtained, so that adsorption separation is more efficiently realized. The adsorbent is respectively used for dye adsorption and heavy metal ion adsorption, and the adsorption performance and mechanism of the adsorbent are explored. The metal organic framework microspheres with both micropores and mesopores are used as an adsorbent, and a simpler, more convenient and novel method is provided for adsorption.

The invention belongs to the technical field of intestinal flora transplantation, and discloses an intestinal flora enrichment microsphere as well as a preparation method and application thereof and an enrichment method of intestinal flora. The intestinal flora enrichment microsphere provided by the invention specifically comprises a calcium alginate gel substrate and a porous adsorbent doped on the calcium alginate gel substrate, and the intestinal flora-enriched microspheres have a special pore size distribution situation, namely the pore size is gradually increased along the direction from the center to the outer layer. When the intestinal flora enrichment microspheres are applied to enrichment of intestinal flora, active flora cells can be effectively separated from small impurities such as intestinal contents and flora metabolites while the proportion of the high-activity flora cells is kept, and the intestinal flora enrichment microspheres have an excellent intestinal flora enrichment effect.

The invention relates to the technical field of feeds, and particularly discloses a cattle fattening feed which is technically characterized by comprising the following components in percentage by weight: 20-60 parts of a fermented mixture, 10-16 parts of modified coconut fiber, 0.5-1.5 parts of an additive and 5-10 parts of an additive, the fermented material mixture is prepared from soybean meal, corn, rice bran, pennisetum purpureum, hops, an aspergillus oryzae culture, saccharomycetes, bacillus subtilis and bacillus amyloliquefaciens; the mass ratio of the soybean meal to the corn to the rice bran to the pennisetum purpureum to the hops is (2-4): (1-3): (3-5): (2-4): (0.4-0.9); the additive is fructus momordicae residues; the additive is a mixture of codonopsis pilosula and rhizoma atractylodis. The feed disclosed by the invention contains the siraitia grosvenorii residues, so that the apparent digestibility, the growth performance, the serum biochemical index and the antioxidant index of the fattening cattle can be improved, and the quality of the fattening cattle can be effectively improved.

The invention provides a system and a method for treating coexisting new pollutants in drinking water, and the system and the method are characterized in that firstly, ozone microbubble water with small volume and large specific surface area and magnetized superfine activated carbon are used for carrying out oxidation treatment on the coexisting new pollutants and adsorbing pollutants with small molecular weight and relatively high activity; the purpose of removing part of new pollutants is achieved; then, under the irradiation of an ultraviolet lamp tube, the reducing agent catalyzes sulfite to generate reducing free radicals such as hydration electrons [eaq-],. H and SO3., and under the substitution action of iodide ions, reductive dehalogenation and iodine substitution reaction of the halogenated organic matter difficult to degrade are achieved, and reduction removal of new pollutants difficult to degrade is achieved. The system is simple and compact in structure, is a treatment device integrating filtration, oxidation, adsorption and reduction, reduces the occupied area, can realize effective removal of coexisting new pollutants with different molecular characteristics and different reaction activities through multiple actions of physical interception, oxidation, adsorption, reduction and the like, and has a wide application prospect.

The invention belongs to the field of coal solid waste resource utilization, and relates to a method for preparing a NaP type molecular sieve by utilizing kaolinite rock type coal gangue. The method comprises the following steps: 1) crushing and grinding blocky kaolinite rock type coal gangue into powder; 2) roasting and activating the coal gangue powder to obtain metakaolin; 3) mixing and stirring metakaolin, sodium hydroxide, a silicon source and deionized water to obtain an initial solution; 4) standing and aging the initial solution to obtain a precursor solution; 5) performing dynamic hydrothermal crystallization treatment on the precursor solution to obtain crystals; and 6) washing, neutralizing, centrifuging and drying the crystal to obtain the NaP type molecular sieve. The kaolinite rock type coal gangue is used as a raw material to replace a traditional chemical raw material required by molecular sieve synthesis, and resource utilization of aluminosilicate solid waste is promoted. According to the method, seed crystals or guiding agents are not required to be added in the molecular sieve crystallization process, and special crystallization methods such as microwaves and ultrasound are also not required, so that the process is simple, the cost is low, and the method is environment-friendly.

The invention relates to the technical field of biochar preparation materials, and discloses a preparation method of a modified coal gangue-municipal sludge-based biochar soil conditioner, which comprises the following steps: crushing a coal gangue raw material and a municipal sludge raw material to obtain coal gangue powder and municipal sludge powder; the coal gangue powder and the municipal sludge powder are leached to obtain leached coal gangue powder and leached municipal sludge powder, the leached coal gangue powder and the leached municipal sludge powder are mixed to obtain mixed solid waste powder, the mixed solid waste powder is pyrolyzed to obtain pyrolyzed biochar, the pyrolyzed biochar is acidized to obtain acidized biochar, and the acidized biochar is acidized to obtain acidized biochar. The acidified biochar is subjected to ball milling, and first modified biochar is obtained; active sites of the first modified charcoal are increased, and the target charcoal soil conditioner is obtained. The soil improvement effect of the biochar can be improved.

The invention discloses a water purifier with a layered filter element structure, and relates to the technical field of water purifiers, and the water purifier comprises a composite mechanism. According to the water purifier with the layered filter element structure, through the design of the composite mechanism, liquid enters from the feeding pipe and then is filtered through the layered filter element, impurities in the liquid are adsorbed, and the inner wall of the composite shell is scraped through the scraping mechanism, so that the effect of cleaning the impurities on the surface is achieved, excessive precipitation of the impurities is prevented, and the service life of the water purifier is prolonged. Impurities enter the output mechanism after being precipitated, filtered liquid flows towards the discharging pipe, follow-up treatment is facilitated, the treatment mechanism clamps the layered filter element, so that the rapid fixing effect is achieved, follow-up disassembly and replacement are facilitated, and the effects that the equipment can work for a long time, and the efficiency is improved are achieved. And the service life of equipment is prolonged.

The invention relates to the technical field of waste gas multi-stage spraying treatment, and discloses a printing and dyeing setting machine waste gas multi-stage spraying treatment device which comprises a spraying tower, the outer wall of the spraying tower is fixedly connected with three conveying pipes, one end of each conveying pipe is fixedly connected with a flow dividing pipe, the interior of each flow dividing pipe is fixedly connected with an atomization spray head, and the atomization spray heads are fixedly connected with the spraying tower. A gas inlet pipe is fixedly connected to the bottom of the spray tower, cooling fins are fixedly connected to the middle of the inner wall of the spray tower, and a filtering assembly is arranged on the inner wall of the spray tower and used for filtering impurities in waste gas. According to the waste gas treatment device, the problems that a spraying treatment device is insufficient in gas-liquid contact time, waste gas distribution is uneven, sufficient combination and cooling are difficult, and the treatment effect is poor are solved, waste gas is evenly distributed, atomized water can make sufficient contact, pollutants are more efficiently adsorbed, dissolved or chemically reacted, and the removal effect is improved.

The invention discloses a carbon dioxide hydrogenation methanation-cracking carbon preparation series method, which comprises the following steps: generating CH4 through a reaction of # imgabs0 # imgabs1 #, and realizing the production of a carbon material by adopting the technologies of condensation separation of CH4 and water vapor, CH4 cracking reaction of # imgabs2 #, cyclic utilization of hydrogen and the like. The process is composed of a carbon dioxide hydrogenation methanation reactor and a methane cracking reactor. In the methanation reactor, CO2 and H2 react under a low-temperature condition to generate CH4 and water vapor; cH4 and water vapor are separated by adopting a compressor condensation separation technology, and the separated CH4 is conveyed to a cracking reactor. In the methane cracking reactor, CH4 is cracked at a high temperature to generate H2 and a carbon nanomaterial, and then H2 is returned to the methanation reactor again. The separation of CH4 and water vapor at a relatively low temperature is realized in the tandem carbonization process through a low-temperature condensation technology; through low-temperature CO2 methanation and CH4 catalytic cracking, the content of CO2 is reduced, a high-quality carbon nanomaterial is obtained, and cyclic utilization of CO2 and H2 is realized.

The invention discloses preparation and application of an imido covalent organic framework material containing imidazolyl ionic liquid. The imido covalent organic framework material (ILs-TPN-COFs) containing the imidazolyl ionic liquid is obtained by connecting the imidazolyl ionic liquid [CnCmILs (at) Br] to an imido covalent organic framework TPN-COFs through a covalent bond. The material has an ionic liquid tertiary amine N active site and a halogen anion active site, and can promote CO2 activation and ring opening of epoxide. The ILs-TPN-COFs catalytic material has the advantages of uniform distribution of active sites, better stability, easiness in separation of the catalyst from a reaction system, better repeatability and the like. According to the invention, the prepared novel ILs-TPN-COFs material is applied to catalysis of synthesis of propylene carbonate from carbon dioxide and epoxypropane, and shows excellent catalytic performance under mild reaction conditions.