53results about How to "Easy to realize large-scale industrial application" patented technology

The invention discloses a method of recycling zinc, manganese, lead and silver from zinc electrowinning anode mud. The method comprises the following steps of: after carrying out wet ball grinding on the zinc electrowinning anode mud, filtering, wherein filtrate is taken as a raw material for a zinc smelting system; mixing filter residues and acidic solution, adding a reducing agent to carry out reduction reaction, leaching manganese, filtering to obtain leaching liquid and leaching slag, purifying the leaching liquid, and preparing manganese dioxide through an electrolysis method; and recycling lead and silver with the leaching slag as high-lead slag and a raw material of a lead smelting system. The method, provided by the invention, has the characteristics of less investment, simple process, low cost, easiness in operation and the like; the whole process is a green metallurgical process flow, and is environmental-friendly, the comprehensive recovery and utilization efficiency of resources can be effectively improved, the battery-level manganese dioxide obtained by electrolysis is taken as a new energy material so as to be beneficial for environmental protection and high value-added utilization of resources. The method is easy to realize large-scale industrial application.

The invention discloses a preparation method of a super-hydrophobic flame-retardant coating with an excellent performance. The preparation method comprises the following steps: dispersing in a mixed solution of absolute ethyl alcohol and ammonia water, ultrasonically stirring, heating, and adding octadecyl trimethoxysilane into the mixed solution to obtain a solution A; dissolving bisphenol A epoxy resin into absolute ethyl alcohol, and performing ultrasonic stirring to obtain a solution B; uniformly mixing the solution A and the solution B, rapidly adding TEOS, adding a flame retardant intermediate, and continuously stirring to obtain a suspension C; and spraying the suspension C onto a substrate for curing to obtain the super-hydrophobic flame-retardant coating. The flame-retardant super-hydrophobic coating with good mechanical stability and chemical stability is successfully prepared by combining a micro-nano structure with epoxy resin, the coating is low in preparation cost, and the preparation technology is simple and is easily applied to industrial production.

The invention relates to a preparation method and an application of a polymer-metal composite separation membrane. The method comprises the following steps: coating a polyvinylidene fluoride microfiltration membrane with dopamine to endow the membrane with the capacity of adsorbing silver ions; then, immersing the membrane adsorbing the silver ions into a reducing solution containing nickel sulfate, and compounding nickel on a polymer separation membrane through reaction to prepare the polymer-metal composite separation membrane. The obtained polymer-metal composite separation membrane realizes sensitivity of Congo red interception rate to an electric field and also has interception stability, and is suitable for selective separation as interception efficiency increases with the enhancement of the electric field, and the separation characteristic of the membrane can be conveniently controlled by changing intensity of the environmental electric field. The method is simple to operate andlow in cost, facilitates industrial application and has great significance in application to printing and dyeing wastewater.

Provided is a method for preparing an electromagnetic shielding composite material with a ferrum-based amorphism / nanocrystalline strip serving as a patch layer. The method comprises processing steps of (1) plasticating isobutylene-isoprene rubber (IIR) on an open type rubber refining machine for 3-10 minutes, then adding rubber compounding agents (known technology) with fixed types and proportion, mixing for about 15-60 minutes to enable a compound phase to be evenly dispersed in the IIR, mixing plastication rubber with white carbon black with proportion of 4:1-6:1 by mass, and producing an IIR film with thickness of 0.1-1mm; (2) compounding carbon fibers with the IIR film to produce an IIR film / carbon fiber / IIR film interlayer structure, and sulfide forming in a pressure forming machine with sulfide temperature at 165 DEG C, sulfide time for 1-5 hours and sulfide pressure at 1-10 MPa; and (3) selecting ferrum-based amorphism / nanocrystalline alloy strips under unannealed conditions and with different thicknesses to produce the surface conductive type electromagnetic shielding composite. The method has the advantages that (1) by means of recycle of waste strips, the processing problem of the waste strips can be effectively solved so that the method has high economic benefits and environmental benefits; and (2) the preparation process of the method is simple in process, low in equipment requirement, remarkable in effect and favorable for achieving large-scale industrialized application.

The invention relates to a method for preparing humic acid from a tail vegetable treated by wet hydrolysis and application. The method includes the steps that the tail vegetable of a vegetable is crushed and the moisture content of the tail vegetable is adjusted, after a chemical catalyst is added for preimpregnation treatment, the tail vegetable is placed in a wet hydrolysis reactor and filled with saturated water vapor for wet hydrolysis treatment, pressure in the reactor is quickly released, a humic material is collected, an alkaline material is added to extract, mixed liquid of fulvic acidand the humic acid and solid residue rich in humin are obtained, after the solid residue is dried by vacuum, a dried product of the humin is obtained, an acid material is added to the mixed liquid for precipitation, solid precipitation is dried after alkaline washing to prepare the humic acid, and the liquid is dried after treated by resin to produce the fulvic acid. The method is applicable to awide range of raw materials, the product yield is high, the production process is fast, stable and pollution-free, large-scale industrial application is easily realized, and reduction, resource and harmless treatment of a large amount of tail vegetables are promoted.

The invention provides an oriental cherry flower extract and an extraction method and application thereof. The extraction method comprises the following steps: extracting oriental cherry petals by adopting an extracting agent to obtain the oriental cherry flower extract, wherein the extracting agent comprises a composition of C3-C6 small molecular polyhydric alcohols, ethanol and water. The extraction method is simple in process route, large-scale industrial application is easily realized, and the obtained oriental cherry flower extract contains rich high-activity active ingredients, has an excellent hair-blacking effect, can be applied to hair-blacking cosmetics of multiple dosage forms such as aqueous solution and emulsion and is wide in application range. The oriental cherry flower extract is mild and non-irritating, is capable of activating tyrosinase, repairing damaged melanocytes and promoting growth of the melanocytes and generation of melanin, regulation and repair are performed from a melanin formation pathway, the aims of blacking hair and improving gray hair and white hair are achieved, the hair can be effectively blacked after the oriental cherry flower extract is usedfor 15 days, and the oriental cherry flower extract has excellent effects.

The invention relates to a CO2 emission reduction technology and aims at providing a method and a device for thermo chemolysis of CO2 and H2O based on reaction substance circulation. The method comprises the steps of feeding the H2O, I2 and SO2 into a Bunsen reaction device for automatic heat release reaction; communicating CO2 gas to a static bed or a fluid bed reactor for heat release reaction with metal Zn or Ni; circulating the products in each reaction process through each reaction device, wherein the final products are H2, CO and O2. The device provided by the invention has a lower maximum heat resource temperature (less than 900 DEG C); heat resources, such as solar energy, nuclear energy and other types can be used; negative influence caused by incomplete reaction of Zn and CO2 is reduced to a certain extent; the device is appropriate in reaction temperature and easy to realize industrial application in scale.

The invention relates to a CO2 emission reduction technology and aims at providing a method and device for preparing CO and H2 by thermochemical cycle decomposition of CO2 and H2O. According to the method, H2O, I2 and SO2 are fed into a Bunsen reaction device to perform a spontaneous exothermic reaction; CO2 gas is introduced to a fixed bed or a fluidized bed reactor and performs an exothermic reaction with metal Zn or Ni; and products in various reaction process are recycled by various reaction devices and final products are H2, CO and O2. The highest heat source temperature of the device is lower (less than 900DEG C) and other various forms of heat sources such as solar energy and nuclear energy can be used; the negative influence caused by incomplete reaction of Zn and CO2 is reduced to a certain degree; and the reaction temperature is proper and the scale industrial application is easily realized.

The invention relates to a method for rapid reduction and resource utilization of fruit processing solid waste. The method for rapid reduction and resource utilization of the fruit processing solid waste comprises the steps that the fruit processing solid waste is smashed, water or a chemical catalyst is added for pre-dip treatment, then the mixture is placed in a hydrothermal degradation reactor,saturated steam is introduced in the mixture for hydrothermal degradation treatment, after the reaction is finished, the pressure in the reactor is quickly removed, and a material subjected to hydrothermal degradation is collected; and after the material subjected to the hydrothermal degradation is mixed with an auxiliary material, an organic fertilizer is produced by aerobic solid-state fermentation, or biological feed is produced by anaerobic solid-state fermentation. A wide application range of raw materials, no special dry processing, high product yield, fast and stable production processand no pollution are achieved, large-scale industrial application is easily realized, and the purpose of rapid reduction and resource utilization of fruit processing solid waste can be realized.

The invention discloses a method of recycling zinc, manganese, lead and silver from zinc electrowinning anode mud. The method comprises the following steps of: after carrying out wet ball grinding on the zinc electrowinning anode mud, filtering, wherein filtrate is taken as a raw material for a zinc smelting system; mixing filter residues and acidic solution, adding a reducing agent to carry out reduction reaction, leaching manganese, filtering to obtain leaching liquid and leaching slag, purifying the leaching liquid, and preparing manganese dioxide through an electrolysis method; and recycling lead and silver with the leaching slag as high-lead slag and a raw material of a lead smelting system. The method, provided by the invention, has the characteristics of less investment, simple process, low cost, easiness in operation and the like; the whole process is a green metallurgical process flow, and is environmental-friendly, the comprehensive recovery and utilization efficiency of resources can be effectively improved, the battery-level manganese dioxide obtained by electrolysis is taken as a new energy material so as to be beneficial for environmental protection and high value-added utilization of resources. The method is easy to realize large-scale industrial application.

The invention relates to a three-dimensional electrode reactor with coupling of Fe<2+> cathode reduction and anodization, in particular to a two-chamber electrochemical reactor with a three-dimensional moving bed electrode, with a hydrogen evolution overpotential metal particle as an electrocatalytic material and a surface renewable, as a cathode, a conductive carbon material as an anode and a perfluoro cation membrane as a separator. While Fe<2+> is removed by electrodeposition in a cathode chamber, Fe<2+> is electrochemically oxidized into Fe<3+> in an anode chamber, thereby achieving coupling between the removal of Fe<2+> and the formation of Fe<3+>. The electrochemical reactor disclosed by the invention has the remarkable characteristics of reasonable structure, renewable electrode surface, recycling of the electrode, simple preparation of the reactor, low production cost, convenience for realization of large-scale industrial application, and the like, and is an electrochemical reactor with coupling of Fe<2+> cathode reduction and anodization for Fe<3+> preparation, which meets the requirements of green chemical development.

The invention relates to the field of CO2 emission reduction and thermochemical hydrogen production and aims to provide a method and a device for preparing H2 and coproducing H2SO4 through thermochemical cycle mineralization of CO2 during decomposition of H2O. A Bunsen reaction device is connected with a liquid phase separation device which is connected with a HIx concentration device and a H2SO4concentration device, the HIx concentration device is connected with the Bunsen reaction device and a Mg12 generation reactor which is connected with a Mg12 distillation device, the Mg12 distillationdevice is connected with the Bunsen reaction device and a Mg12 hydrolysis carbonation reactor which is connected with a HI catalytic decomposition reactor, and the HI catalytic decomposition reactor is connected with the Bunsen reaction device. CO2 mineralization technology and hydrogen production through thermochemical sulfur-iodine open cycle decomposition of water are organically combined creatively, and CO2 is mineralized and fixed in mild reaction conditions while H2 and H2SO4 with high added value are coproduced; hydrogen production cycle and mineralization technology are organically combined, so that higher theoretical heat efficiency is realized; the method is proper in reaction temperature and easy for large-scale industrial application.

The invention provides a system for producing high-whiteness calcined kaolin by multistage suspension calcination of coal series kaolin. A crusher, a mill, a feed bin and a spiral feeder are sequentially matched, and the spiral feeder is matched with a feed port of a suspension dehydration calcinator; the suspension dehydration calcinator, the first cyclone separator, the suspension dehydroxylation calcinator, the second cyclone separator, the suspension decarburization calcinator and the third cyclone separator are sequentially communicated in series, and a discharge port of the third cycloneseparator is communicated with a feed port of the first-stage cooler; and the first-stage cooler and the second-stage cooler are communicated in series. The system and the method can realize accurateregulation and control of coal series kaolinite in calcination, obtain products with uniform properties at each stage, and have the advantages of environmental friendliness, low energy consumption, high heat and mass transfer efficiency, low treatment cost, good economy, easiness in realization of large-scale industrial application and the like.

The invention relates to a preparation method of a composite separation membrane, which is characterized in that a metal salt solution, a polyphenol solution and an oxidant solution are matched for use, and are subjected to complex reaction and oxidative polymerization reaction on a polymer substrate, so that a modified layer with relatively strong hydrophilicity is formed, and the flux, the rejection rate and the anti-pollution performance of the separation membrane are improved. The preparation method is short in time consumption, simple to operate, mild in reaction condition and easy to realize large-scale industrial application, and has obvious popularization advantages. The preparation method disclosed by the invention can be carried out through ink-jet printing, and is high in raw material utilization rate, free of resource waste and environment-friendly. The invention also relates to the composite separation membrane obtained by the preparation method, and the composite separation membrane has the advantages of strong hydrophilicity, high flux, high rejection rate, high pollution resistance and good separation effect, and has important significance in the separation of oil-water emulsions.

The invention relates to the field of CO2 discharging reduction and thermochemical hydrogen production, and aims to provide a method and device for preparing H2 by simultaneous thermochemical cycle mineralization of CO2 and decomposition of H2O. A Bunsen reaction device is connected with a liquid phase separation device; the liquid phase separation device is connected with a HIx concentration device and a H2SO4 concentration device respectively; the H2SO4 concentration device, a concentrated H2SO4 catalytic decomposition device and the Bunsen reaction device are connected in sequence; the HIxconcentration device is connected with the Bunsen reaction device and a MgI2 generation reactor; the MgI2 generation reactor is connected with a MgI2 distillation device; the MgI2 distillation deviceis connected with the Bunsen reaction device and a MgI2 hydrolytic carbonation reactor; the MgI2 hydrolysis carbonation reactor is connected with an HI catalytic decomposition reactor; and the HI catalytic decomposition reactor is then connected with the Bunsen reaction device. According to the device, a CO2 mineralization technology and thermochemical sulfur-iodine open-cycle water decompositionfor hydrogen production are organically combined creatively; CO2 is mineralized and fixed under a relatively mild reaction condition, and H2 with a high additional value is co-produced; and an HI-I2 rectification process in a traditional hydrogen production cycle is avoided, and higher heat efficiency is achieved.

The invention discloses a preparation method of an amorphous surface modified layered double hydroxide hierarchical heterostructure electrocatalyst in the technical field of material preparation, which comprises the following steps: (1) dissolving CoCl2.6H2O, AlCl3.6H2O, ammonium fluoride and urea in deionized water to obtain a mixed solution; (2) transferring the mixed solution into a high-pressure hydrothermal reaction kettle, and then adding foamed nickel into the kettle; and (3) stirring FeCl3.6H2O and absolute ethyl alcohol for 10 minutes to form a solution, putting the foamed nickel obtained in the step (2) into the solution, magnetically stirring for 12 hours, then taking out, cleaning with absolute ethyl alcohol for three times, putting into a vacuum drying oven, and preserving heat at 60 DEG C for one night to obtain a target product. Compared with a traditional noble metal oxide, the product has the advantages that the catalytic performance is guaranteed, and meanwhile, the product is wide in raw material source, low in price and easy to popularize; the preparation technology is simple, the technical requirement is not high, and industrial large-scale application is easy to achieve.

The invention relates to an electrocatalyst for a proton exchange membrane fuel cell, which is a catalyst that carries a hollow spherical binary platinum-based alloy on a carbon carrier, and the wall of the hollow sphere has holes through the wall; the nano-particles of the binary platinum-based alloy PtxMy The atomic ratio of x and y distribution is: x:y=10:1~1:1, the mass content of Pt in the supported catalyst is 10~40%; the second metal M is Pd, Fe, Ni or Cu. Compared with the prior art, the platinum-based alloy catalyst nanoparticles prepared by the present invention have good dispersion and uniform particle size; the structure and shape of the catalyst can be controlled by using a complexing agent and an etchant; the preparation method of the electrocatalyst is simple and reliable. Good controllability, aqueous phase reaction system and mild preparation conditions make this method not only save energy, but also reduce manufacturing cost, and it is easy to realize large-scale industrial application.

The invention belongs to the technical field of hydrometallurgy and relates to a method for separating chromium and iron and aluminum in a sulfuric acid system solution containing chromium, iron and aluminum. The method comprises the following steps: 1) adding an oxidizing agent for pretreatment; 2) adjusting the solution to a specific pH value, adding phosphate and reacting at a specific temperature to obtain iron-aluminum phosphate composite precipitation and filtrate mainly composed of iron phosphate; 3) Adjust the filtrate to a specific pH value, add phosphate again and react at a specific temperature to obtain iron-aluminum phosphate composite precipitation mainly composed of aluminum phosphate and chromium sulfate solution to complete the separation of chromium and iron-aluminum. The method has short flow, simple operation, and is easy to be applied on a large scale; adopting the step-by-step precipitation method of phosphate has strong selectivity and ideal separation effect; the recovery rate of metal chromium is greater than 98%, and the economic benefit is remarkable; the whole separation process No chemical substances that may cause harm to the environment are used, which meets the requirements of green environmental protection.

The invention relates to the technical field of polymer separating membrane surface modification, in particular to a method for polymer separating membrane surface modification. The invention provides a preparation method for a separating membrane with pH-dependent flux under an acidic condition; according to the method, hydroxyethyl acrylate is grafted on the surface and / or the membrane pore surface of a PVDF (polyvinylidene fluoride) membrane in a radiation field of Co60. According to the preparation method, the hydroxyethyl acrylate is grafted on the PVDF membrane through Co60 high-energy radiation; the sensitivity of the membrane to the solutions with different pH values is changed. The grafted membrane has pH dependence, so that the membrane flux is reduced along with the increment of the pH; moreover, the membrane flux is remarkably reduced when the pH is between 4 and 5, so that the membrane is very suitable for selective separation; by changing the pH value of the environment, a pollution behavior in a membrane control process and separating characteristics of the membrane are controlled.