22results about How to "Guaranteed reactivity" patented technology

The invention provides a high-moisture-permeability and high-stability humidity-sensitive polyurethane material and a preparation method thereof, and relates to the technical field of material preparation, the material architecture comprises a polyol component, an isocyanate component, a chain extender component and a functional agent component, wherein the polyol component accounts for 80-92% of the whole ingredient, the isocyanate component accounts for 3-5% of the whole ingredient, the chain extender component accounts for 2-5% of the whole ingredient, the functional agent component accounts for 5-10% of the whole ingredient, the polyol component is adaptive to different performance emphasis of packaging and spinning, the isocyanate component meets the difference of processing, environment and service life, and the functional agent component accounts for 5-10% of the whole ingredient. The chain extender component adapts to the thickness and strength requirements of a membrane material, the functional agent component aims at special environment and functional requirements, perfect matching of the material and an application scene of a target product is achieved through accurate blending of the component proportion, the adaptive scene of the humidity-sensitive polyurethane material can be greatly met, meanwhile, the function of the humidity-sensitive polyurethane material is utilized and played to the maximum extent, and the application prospect of the humidity-sensitive polyurethane material is widened. Material waste is avoided, cost is saved, and production is maximized.

The invention discloses a pressure-free baking-free brick for synergistically recovering solid waste molten water-quenched slag and sludge incineration ash and a preparation method. The water-quenched slag and the sludge incineration ash are used as building materials to prepare the high-strength baking-free brick. By utilizing a chemical component complementation mechanism between two solid wastes, through scientific formula design and combining process route optimization, efficient fixation of heavy metals and improvement of mechanical properties of the brick body are realized, and the brick is high in strength and good in durability. According to the invention, the use of traditional brick making raw materials is reduced, and the adopted pouring molding technology is low in energy consumption and less in carbon emission; according to the method, the two solid wastes of the water-quenched slag and the sludge incineration ash are effectively consumed and converted into the sintering-free brick value-added building material, the secondary utilization value of the solid wastes is further developed, efficient toxicity reduction of the water-quenched slag is achieved, environmental benefits and social and economic benefits are both achieved, and the method is worthy of popularization and application. And a new sustainable development direction is provided for resource utilization of solid wastes and green transformation of the building industry.

The invention discloses a tabletting forming method of a Cr-based catalyst. The method comprises the following steps: (1) preparing Cr-based catalyst powder by adopting a coprecipitation method; the Cr-based catalyst powder is roasted powder; (2) mixing the Cr-based catalyst powder obtained in the step (1), an aqueous solution of an auxiliary agent I and selectively added water to obtain a mixed material; (3) drying, crushing and screening the mixed material obtained in the step (2), mixing with an auxiliary agent II and an auxiliary agent III, and tabletting to obtain tablets; and (4) roasting the tablets prepared in the step (3) to obtain the formed catalyst. The Cr-based catalyst prepared by the method does not have the problems of layering, transverse cracking, uncapping and the like, and has stable physical and chemical properties.

The invention relates to a treatment method and a treatment device for VOCs-containing waste gas, the VOCs-containing waste gas is heated and then enters a catalytic oxidation reactor, the reactor takes a fluidized bed as a main body and is filled with a particle catalytic oxidation catalyst, and the waste gas and the particle catalyst are subjected to a fluidized oxidation reaction; a cylindrical fixed bed is radially arranged in the fluidized bed and filled with a regular catalytic oxidation catalyst, and the lower end of the fixed bed penetrates through the bottom of the reactor and is gathered at an exhaust pipe; a gas-solid separator is arranged at the upper part of the fluidized bed, fluidized and oxidized waste gas passes through the gas-solid separator, catalyst particles carried by the waste gas are intercepted, separated gas enters from the top of the fixed bed and is continuously oxidized, and high-temperature purified gas is exhausted through an exhaust pipe. According to the method and the device, the reaction temperature of catalytic oxidation is effectively homogenized, high-temperature hot spots of a catalyst bed layer and influences on the service life of the catalyst are avoided, and meanwhile deep treatment of waste gas and effective utilization of heat are achieved.

The invention belongs to the technical field of organic synthesis, and provides a preparation method of diphenyl disulfide, which comprises the following steps: A, in a dry atmosphere filled with inert gas, mixing halogenated benzene and magnesium powder, reacting to generate a Grignard reagent, and cooling to 0-15 DEG C; and B, dissolving disulfur dichloride in a solvent, dropwise adding the solution into the Grignard reagent obtained in the step A, carrying out a stirring reaction at 0-15 DEG C, carrying out a quenching reaction by using a saturated ammonium chloride aqueous solution, and carrying out extraction, drying and concentration on an organic phase to obtain diphenyl disulfide. The method adopts a one-pot method for direct synthesis, and is green and environment-friendly, and high in yield and purity.

The utility model discloses a harmless treatment system for electrolytic manganese residues, and relates to the technical field of application of solid waste treatment and environmental protection. The innocent treatment system for the electrolytic manganese residues comprises a manganese residue pretreatment system, an activating agent pretreatment system, a pH back-adjusting agent pretreatment system, a treating agent pretreatment system, a reaction system and a recovery system, the manganese slag pretreatment system, the activating agent pretreatment system, the pH back-adjusting agent pretreatment system and the treating agent pretreatment system are respectively connected with the reaction system, and the reaction system is connected with the recovery system. According to the utility model, links of backwashing, crushing, mixing and ammonia absorption are linked, innocent treatment of electrolytic manganese residues is realized, the design is reasonable, the structure is simple, automatic operation can be realized, and the treatment cost is low.

The invention discloses a novel thermal insulation coating, belongs to the technical field of coating processing, and is used for solving the technical problem that the thermal insulation performance and the polyacrylate emulsion droplet structure of a polyacrylate coating in the prior art need to be further improved. The coating is prepared from the following components in parts by weight: 60-80 parts of polyacrylate emulsion, 6-7 parts of titanium dioxide, 7-8 parts of nano aluminum oxide, 6-8 parts of talcum powder, 2-5 parts of a dispersing agent, 3-5 parts of a stabilizer, 2-5 parts of a flatting agent and 2-3 parts of an anti-sticking agent. The modified emulsifier prepared by the preparation method disclosed by the invention is used as a part of a polyacrylate chain segment while having excellent performance, and is further reacted to prepare an emulsion droplet dispersed polyacrylate emulsion which takes modified hollow glass microspheres as a carrier inside and is externally modified with an amphiphilic polyacrylate structure; and mixing and sieving with auxiliary materials to obtain the wear-resistant, high-temperature-oxidation-resistant, heat-insulating and corrosion-resistant coating.

The invention belongs to the technical field of polyurethane materials, particularly relates to a two-component polyurethane composition and a washable anti-yellowing polyurethane foam material prepared from the two-component polyurethane composition, and further discloses a preparation method of the two-component polyurethane composition. The bi-component polyurethane composition comprises an independent component A and an independent component B. The component A comprises polyether polyol, a random polymer of hexafluorobutyl methacrylate (HFBMA) and 2-hydroxyethyl methacrylate (HEMA), a cross-linking agent, a foaming agent, a foam stabilizer and a catalyst. And the component B comprises isocyanate. According to the double-component polyurethane composition disclosed by the invention, on the basis of a traditional polyurethane synthesis system, a polymer obtained by copolymerizing hexafluorobutyl methacrylate and 2-hydroxyethyl methacrylate is used as a modifier; the polyurethane material prepared from the polyurethane composition has the advantages of washable yellowing resistance, excellent tensile strength, tear strength and elongation at break, and certain weatherability.

The invention discloses a method for reducing gold and platinum noble metal nanoparticles through silver nanowires, which is characterized in that gold and platinum noble metal nanoparticles are replaced on the silver nanowires through simple replacement reaction, and the original micromorphology of the silver nanowires is maintained. By controlling the amount, the adding mode and the adding condition of the added noble metal acid, selective replacement of the silver nanowires can be achieved, and the growth size and distribution of the nanoparticles can be controlled. The prepared AgNWs-Au and AgNWs-Pt with the root nodule-like structures are uniform in form and controllable in growth, the preparation process is simple and rapid, the reproducibility is high, and the obtained sample is stable in property. The development requirement of a material subject on a multifunctional composite material is met to a certain extent, and the composite material has a wide application prospect in the fields of electro-catalysis and sensing.

The present invention discloses a grading method and application of a hydrogenation catalyst. The method includes a hydrodemetallization reaction zone, wherein the hydrodemetallization reaction zone includes at least a first hydrodemetallization reaction zone and a second hydrodemetallization reaction zone which are sequentially connected in series along the direction of the logistics, and the catalyst loaded in the second hydrodemetallization reaction zone is a second hydrodemetallization catalyst, wherein at least one catalyst is loaded; and the active metal component of the second hydrodemetallization catalyst is distributed in a "protein type"; and the second hydrodemetallization catalyst adopts a specific loading method. The grading method is applied to the heavy oil hydrogenation reaction, which can reduce the deposition of metal impurities and carbon deposits on the catalyst, slow down the catalyst deactivation rate, improve the demetallization, desulfurization and residual carbon removal stability of the entire system, and extend the operation cycle of the catalyst.

The invention belongs to the technical field of vertical barrier materials, and particularly relates to a vertical antifouling barrier material and a preparation method and application thereof.The antifouling barrier material is prepared from, by mass, 10-15 parts of bentonite, 3-15 parts of gelling agent and 70-87 parts of in-situ soil, the gelling agent is prepared from activated red mud, blast furnace slag powder, silica fume and water glass, and the water glass is prepared from sodium silicate, sodium silicate and sodium silicate. By replacing cement with the gelling agent component, the adsorption capacity, the pollutant intercepting capacity and the early strength of the vertical antifouling barrier material are improved, a low-permeability antifouling barrier can be formed in a high-concentration organic pollution solution and a heavy metal pollution solution, pollutants are prevented from horizontally migrating along with underground water, and the pollution resistance of the vertical antifouling barrier material is improved. And thus, effective isolation management and control of the polluted site are realized. The vertical antifouling barrier material provided by the invention can be applied to a polluted site in which the underground water heavy metal concentration is greater than or equal to 20mg / L or the organic matter concentration is greater than or equal to 400mu g / L.

The invention relates to a method and a device for treating organic waste gas containing low-carbon hydrocarbon, the waste gas is heated and then enters a catalytic oxidation reactor, and the reactor takes a fluidized bed as a main body and is filled with a granular catalyst; a tubular fixed bed is radially arranged on the fluidized bed and filled with a high-temperature-resistant catalyst, and the lower end of the fixed bed penetrates through the bottom of the reactor and is converged on an exhaust pipe; a gas-solid separator is arranged on the upper portion of the fluidized bed, fluidized and oxidized material flow passes through the gas-solid separator, carried particle catalysts are intercepted, separated gas is heated by a heater on the top of the reactor and then enters the fixed bed to be continuously oxidized, and high-temperature purified gas is exhausted through an exhaust pipe. The fluidized bed and the fixed bed are coupled, so that deep treatment and effective heat utilization of the low-carbon hydrocarbon-containing organic waste gas are realized, particularly, the reaction temperature is effectively homogenized, and high-temperature hot spots of a catalyst bed layer and the influence on the service life of a catalyst are avoided.

The present invention belongs to the field of functional coatings, and specifically relates to a modified melamine coating for household appliances and a preparation method thereof, wherein the modified melamine coating for household appliances comprises the following raw materials in parts by weight: 20-40 parts of polyester acrylate prepolymer; 15-30 parts of modified melamine monomer; 8-15 parts of UV monomer diluent; 2-5 parts of photoinitiator; 0.1-0.4 parts of leveling agent; residual amount of organic solvent; the total amount of the above components is 100 parts. The modified melamine coating for household appliances is obtained through a paint making process, a coating process, and curing. The modified melamine coating for household appliances of the present invention is designed by formula and matched with a homemade modified melamine monomer, which can effectively improve the deficiencies of the coating used for household appliances in the prior art in terms of antistatic, flame retardant and antibacterial effects.

The invention discloses bisphenol A type epoxy resin crystal glue and a preparation method thereof. The polyester resin is obtained by reacting raw materials including a component A and a component B, the mass ratio of the component A to the component B is (1-3): 1; the component A comprises bisphenol A type epoxy resin, hydrogenated bisphenol A type epoxy resin, a reactive diluent and a defoaming agent; the component B comprises alicyclic amine, polyether monoamine, bisphenol A epoxy resin and a reactive diluent; the polyester resin is prepared by the following steps: respectively preparing a component A and a component B, enabling bisphenol A epoxy resin and polyether monoamine to react through a fractional step method, adding a reactive diluent to obtain a precursor of the component B, slowly dripping the precursor into alicyclic amine to obtain the component B, and mixing the component A and the component B to obtain the polyester resin. Based on the synergistic effect of all the components, the transparency and yellowing resistance of the crystal glue are greatly improved on the premise of not needing an organic solvent, an accelerant and an antioxidant.

This utility model relates to melamine-formaldehyde resin production technology, and discloses a melamine-formaldehyde resin condensation reactor with flexible chain controllable polymerization, including a reactor body, a stirring device, a temperature control device, a feeding device, a flexible chain polymerization control device, and a discharging device; the stirring device includes a motor, a drive shaft, and a stirring paddle, with the motor installed above the reactor body and connected to the stirring paddle via the drive shaft; the temperature control device includes a heating jacket, a heating coil, and a temperature sensor located inside the reactor body; the feeding device includes a feeding pipe, a high-precision flow meter, an electric valve, and a feed inlet; the flexible chain polymerization control device includes a viscometer, an infrared spectrometer, a data processor, and a controller, with the viscometer and infrared spectrometer located inside the reactor body; the discharging device is located at the bottom of the reactor body and includes a sealing valve, a discharging pipe, a heat insulation layer, and a variable frequency delivery pump, with a heat insulation layer outside the discharging pipe and the variable frequency delivery pump installed on the discharging pipe.

The application relates to high-sphericity nano tetragonal barium titanate for MLCCs and a preparation method thereof. The technical scheme is as follows: a titanium source, a dissolving agent and potassium perchlorate are mixed to obtain mixed material A; the mixed material A is heated twice under air condition, is preserved, is naturally cooled to obtain a reaction product; the reaction product is washed with distilled water I, is separated, is dried to obtain titanium dioxide powder; the titanium dioxide powder and barium oxide are mixed to obtain mixed material B; the mixed material B, ethylene glycol, pure water and an anionic surfactant are mixed to obtain a mixed solution; the mixed solution is moved to a polytetrafluoroethylene reaction kettle, is placed in a microwave heating furnace, is heated, is preserved, is naturally cooled and is filtered; the filtered product is washed with distilled water II, is separated, is dried to obtain high-sphericity nano tetragonal barium titanate for MLCCs. The product prepared by the application has high purity, high sphericity, small particle size, good dispersity and high tetragonality.

The invention belongs to the technical field of organic chemistry, and mainly relates to preparation of 5, 6-dimethyl benzimidazole, in particular to a synthetic method of environment-friendly 5, 6-dimethyl benzimidazole. According to the method, an environment-friendly organic solvent is adopted to replace a traditional solvent and is combined with a novel catalyst, so that the selectivity and the yield of the reaction are remarkably improved, the use of sulfuric acid is reduced to a great extent, the generation of wastes is reduced to the maximum extent, meanwhile, the catalyst is easy to recycle and reuse, and the reaction cost is reduced. The synthesis method is simple and convenient to operate, mild in condition, environment-friendly and sustainable, has unique advantages and technical progress, has wide market prospects and economic benefits in practical application, and provides a new direction and solution for development of an environment-friendly chemical synthesis technology.

The utility model discloses an SCR (Selective Catalytic Reduction) denitration system suitable for the working condition change of a boiler, which comprises an SCR denitration reactor, a rectification grid is arranged in the SCR denitration reactor, and a vanadium-titanium catalyst is arranged at one end of the rectification grid; an SCR inlet flue is arranged at one end of the SCR denitration reactor, an SCR inlet flue regulating valve is arranged on the SCR inlet flue, an ammonia spraying grid is arranged at one end of the SCR inlet flue regulating valve, and the SCR inlet flue is connected with the inlet end of the SCR denitration reactor; and a low-temperature flue gas bypass and a high-temperature flue gas bypass are arranged at one end of the SCR inlet flue. The device can be suitable for the working condition change of the boiler, and when the boiler is frequently subjected to high-load or low-load peak regulation, it is guaranteed that the inlet smoke temperature of the SCR denitration reactor is always kept in a stable range.

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

The utility model relates to the technical field of discharging devices for recycling lithium ion batteries, and discloses a discharging device for recycling lithium ion batteries, which comprises a soaking box, two groups of heating devices are arranged on two sides of the inner bottom wall of the soaking box, and a liquid discharge pipe is arranged on the outer wall of the right side of the soaking box. A supporting frame is arranged in the middle of the inner bottom wall of the soaking box, discharging assemblies are arranged in the soaking box and on the rear side of the soaking box, and each discharging assembly comprises a motor, a fluoroplastic pump, a salt solution box, a liquid inlet pipe and a glass plate. Meanwhile, a heating device enables the salt solution to be heated more uniformly, after the salt solution is used for a period of time, a liquid discharging pipe is opened to discharge old liquid, then a fluoroplastic pump is started, a new solution is conveyed from the salt solution box to the soaking box, the reaction activity of the solution is maintained, and the battery recovery reaction is assisted.

The invention discloses a PtxPdy / CeO2-CNTs electrocatalyst as well as preparation and application thereof, and belongs to the field of catalysts. The preparation method of the electrocatalyst comprises the following steps: ultrasonically dispersing carbon nanotubes and soluble cerium salt in deionized water, adjusting the pH value by using a KOH solution, and carrying out suction filtration, washing and vacuum drying to obtain a composite carrier precursor; grinding the composite carrier precursor, putting into a tubular muffle furnace, roasting in an air atmosphere, and cooling to room temperature to obtain a CeO2-CNTs composite carrier; adding the CeO2-CNTs composite carrier into an ethylene glycol solution, ultrasonically dispersing uniformly, dropwise adding an H2PtCl6 solution and an H2PdCl4 solution, stirring, adjusting the pH value by using a NaOH solution, transferring into a stainless steel kettle containing a polytetrafluoroethylene lining, carrying out hydrothermal reaction, cooling to room temperature, washing for multiple times, and carrying out vacuum drying to obtain the catalyst. The electrocatalyst prepared by the invention has the advantages of larger electrochemical active area, high metal effective load rate, good stability, higher CO poisoning resistance and excellent methanol electrocatalytic oxidation performance.

The invention relates to the technical field of catalysts for groundwater remediation, in particular to an iron-nitrogen composite porous carbon microsphere material and a preparation method and application thereof. The invention provides an iron-nitrogen composite porous carbon microsphere material, which comprises a porous carbon matrix, and Fe < 0 >, Fe < 3 > N, Fe < C > x and Fe < 3 > O < 4 > loaded on the porous carbon matrix, the Fe < 0 > is an active electron donor, and the Fe < 3 > N, the Fe < C > x and the Fe < 3 > O < 4 > are reduction active sites; wherein based on the mass of the iron-nitrogen composite porous carbon microsphere material, the content of Fe < 0 > is 25-33 wt%. According to the material, carbon serves as a matrix, Fe0, Fe3N, FeCx and Fe3O4 serve as composite components, the surface is porous, internal zero-valent iron and the like are not prone to oxidation, and the problem that existing pure zero-valent iron microspheres are rapidly passivated in the repairing process can be solved.