306results about How to "Sustainable" patented technology

The invention relates to a preparation method for a chitosan natural polymer modified crude oil desalting demulsifier. The method comprises the following steps: 1) modifying polyethylene glycol monomethyl ether by halogenating; 2) preparing glycidyl dimethyl alkyl ammonium chloride; 3) preparing quaternized carboxy alkyl chitosan; 4) causing the modified polyethylene glycol monomethyl ether to react with the quaternized carboxy alkyl chitosan, thereby obtaining a target product, polyethylene glycol monomethyl ether grafted quaternized carboxy alkyl chitosan. According to the invention, the chitosan natural high-molecular compound is taken as the raw material and has the advantages of wide resource, naturality, non-toxicity, sustainability, excellent biological compatibility of products, degradability, and the like. The demulsifier prepared according to the invention has excellent demulsification dewatering effect; the molecule of the demulsifier contains a large amount of carboxy alkyl groups and quaternary ammonium salt groups and the electronegative ions, including metal cation, naphthene acid radicals, and surfaces are electronegative grains and have strong combining capacity, so that the demulsifier has the capacities of demulsifying while removing oil-soluble salt.

The invention relates to a method and device for desalting sea water and generating electricity by utilizing tidal energy drive. The high sea water in the sea when in rising tide is utilized to impact a water turbine to rotate in the process of flowing into an impounding reservoir, or the high sea water in the impounding reservoir when in ebbing is utilized to impact the water turbine to rotate in the process of flowing into the sea; the water turbine drives a high-pressure pump to operate to generate high-pressure water which is desalted through a reverse osmosis membrane module; the high-pressure concentrated sea water discharged from the reverse osmosis membrane module impacts a turbo machine to rotate; the turbo machine drives a generator to rotate to generate electric energy, thus realizing the comprehensive utilization and conversion of the tide energy; the effluents in the process of energy utilization and conversion do not cause pollution, are clean and environmental-friendly;the system does not need additionally provided external power, and is low in operation cost; and the tide energy is a renewable energy source, and has the advantages of sustainable development, better social benefits and application value.

The invention relates to a preparation method of a polyether-grafted chitosan derivative crude oil desalting demulsifier. The preparation method comprises the following specific steps: firstly, performing formylation modification on polyethylene glycol monoethylether; secondly, preparing glycidyl dimethyl alkyl ammonium chloride; thirdly, preparing quaternarization carboxyalkyl chitosan; fourthly, enabling formylation modified polyethylene glycol monoethylether to react with carboxy alkyl chitosan to obtain the polyether-grafted chitosan derivative crude oil desalting demulsifier. The polyether-grafted chitosan derivative crude oil desalting demulsifier disclosed by the invention is prepared by taking chitosannatural polymeric compounds as raw materials, and has the advantages of wide sources, naturalness, no toxicity, sustainability, good biocompatibility of a product, degradability and the like. The prepared demulsifier is good in demulsifying and dehydrating effect; meanwhile, a demulsifying molecule contains a large amount of carboxyalkyl groups and quaternary ammonium salt groups which have strong combining capacity to metal cation, ions with negative electricity such as naphthenic acid radicals as well as particles of which the surfaces are electronegative, so the polyether-grafted chitosan derivative crude oil desalting demulsifier has capacity of removing oil-soluble salts while demulsifying.

The invention relates to a synthesis method of a crude oil desalting demulsifying agent. The method specifically includes the steps of firstly, conducting p-nitrophenyl ester modification on methoxypolyethylene glycol; secondly, preparing glycidyl dimethyl alkyl ammonium chloride; thirdly, preparing quaternized carboxy alkyl chitosan; fourthly, making the modified methoxypolyethylene glycol react with quaternized carboxy alkyl chitosan to obtain a product, namely polyethylene glycol questin grafted quaternized carboxy alkyl chitosan. A chitosan type natural high-molecular compound serves as the raw material and has the advantages of being wide in resource, natural, free of toxin, sustainable, good in product biocompatibility, degradable and the like; The prepared demulsifying agent is good in demulsifying dewatering effect; meanwhile, due to the fact that lots of carboxy alkyl groups and quaternary ammonium salt groups are contained in demulsifying agent molecules and have strong binding capacity with metal cations, naphthenic acid radicals and other ions with negative charges and particles with surface electronegativity, the oil-soluble salt removing capacity is achieved during demulsifying.

The invention relates to a preparation method of a chitosan type crude oil desalting demulsifier. The preparation method includes the steps of firstly, performing epoxidation modification on methoxy polyethylene glycol; secondly, preparing glycidyl dimethyl alkyl ammonium chloride; thirdly, preparing quaternization carboxy alkyl chitosan; fourthly, allowing the modified methoxy polyethylene glycol to react with the quaternization carboxyl alkyl chitosan to obtain methoxy polyethylene glycol grafted quaternization carboxy alkyl chitosan. The preparation method has the advantages that chitosan type natural high-molecular compounds are used as the raw materials, the method is wide is source, natural, nontoxic and sustainable, and the product of the method is good in biocompatibility, degradable, and the like; the prepared demulsifier is good in demulsifying and dewatering effect, the demulsifier has high combining capacity to electronegative ions such as metal cations and naphthene acid radicals and electronegative particles due to the fact that the molecules of the demulsifier contain a large amount of carboxyl alkyl groups and quaternary ammonium salt groups, and oil-soluble salt can also be removed during demulsifying.

The invention relates to a clean technique for co-producing xylose, xylitol and arabinose from agricultural and forestal waste, belonging to the field of utilization of agricultural and forestal waste. The technique comprises the following steps: pretreating and preprocessing the raw material, and hydrolyzing in a thermophilic digestion mode to prepare a hemicellulose hydrolysate; after centrifugalizing to remove solid residues, carrying out TiO2-loaded activated carbon photocatalysis or ion exchange resin decolorization and detoxification treatment on the hydrolysate; carrying out MVR (mechanical vapor recompression) concentration treatment and gradient-cooling crystallization to obtain a xylose product and a xylose mother solution; fermenting L-arabinose unconverted xylitol fermentationhigh-yield strain xylitol by using the xylose mother solution as the medium to produce the xylitol; centrifugalizing to remove thalli, and carrying out decolorization and desalting treatment by membrane-process or resin adsorption; separating by using a simulated moving bed or chromatographic separation technology to obtain a xylitol phase and an L-arabinose phase; and carrying out MVR or vacuum concentration treatment on the two phases, and crystallizing in a gradient programmed cooling mode to respectively obtaining a xylitol product and an L-arabinose product, wherein the two mother solutions can be recycled.

The invention relates to a clean and high-efficiency production process for preparing xylose and L-arabinose and belongs to the field of application of wastes of agriculture and forestry. The production process comprises the following steps of: performing pretreatment on raw materials; hydrolyzing the raw materials in a high-temperature cooking mode; performing neutralizing treatment and performing centrifugal separation on solid slag to obtain xylose or xylooligosaccharide hydrolyzate; adding coarse enzyme solution into xylooligosaccharide solution to hydrolyze to obtain xylose solution; treating the hydrolyzate by Angle yeast; purifying by using active carbon and resin; performing recompression and concentration treatment on the purified hydrolyzate by using a mechanical vapor recompression (MVR) machine; crystallizing the concentrated solution in a gradient program cooling mode to obtain xylose products and xylose mother solution; separating the xylose mother solution by a simulated moving bed or a chromatographic separation technology to obtain a xylose phase and an L-arabinose phase; returning the xylose phase to the xylose solution to concentrate and recrystallize; reusing the xylose mother solution; performing MOVR concentration treatment on the L-arabinose phase and crystallizing in a gradient program cooling mode to obtain L-arabinose products; and reusing the L-arabinose mother solution.

A leadless free-cutting copper alloy and a preparation method. The copper alloy comprises the following elements by mass: 58.0%-96.0% of copper, 2.0%-2.9% of manganese, 0.2%-6.0% of tin, not more than 0.3% of phosphor, not more than 0.3% of nickel, 0.10%-0.19% of sulfur, 0.1%-0.9% of the sum of 1-3 elements selected from silicon, iron, molybdenum, tungsten, and cobalt, and the balance of zinc. In the alloy, the mass ratio of manganese and sulfur is more than 10 and less than 30; the other elements are impurities, and the mass fraction of any one of the impurities is not more than 0.03%; the sum of the mass fractions of all the impurities is not more than 0.5%. The preparation method comprises the following steps: melting and alloying the base metal element of copper and the important metal element of manganese, adding other alloy elements and performing homogenization, performing refining, adding sulfide or sulfur, performing homogenization and adding zinc rapidly, immediately casting into a ingot casting or performing atomization to obtain powder. The leadless free-cutting copper alloy and the preparation method of the invention are applicable to cutting processing, hot forging processing, and polishing processing of copper alloy.

The invention relates to an antibacterial latex paint containing natural jade powder and a preparation method for the same. The antibacterial latex paint contains the following ingredients in parts by weight: 50-150 parts of natural jade powder, and 5-15 parts of nanometre inorganic anionic auxiliary, wherein the grain diameter of the natural jade powder is 3000-6000 meshes. The latex paint provided by the invention can be coated on a wall surface or wood, and the paint film has the advantages of being weak in smell, low in VOC (volatile organic compound), good in covering power, good in adhesion power, resistant to scrub and the like, and can effectively kill the harmful bacteria contacted with the painted wall surface in a room simultaneously; and moreover, the latex paint is low in cost, good in construction performance and great in environmental protection performance, and is mainly applied to decoration and protection for the surfaces of wall body, wood, etc.

The invention relates to a method for producing CO with an inert oxide carrier (SiO2, Al2O3, ZrO2, TiO2, YSZ and the like) supported spinel compound A<1-gamma>B<2-delta>O<4> (0<=gamma<1, 0<=delta<=1) as an active material and through two steps of thermochemical cyclic decomposition of CO2. The method comprises the following main steps: (1) firstly, the active material releases oxygen at a high temperature so as to generate oxygen vacancies; and (2) the active material containing a large number of oxygen vacancies is subjected to a reaction with CO2 at a lower temperature, and CO is released. Spinel is used as the active material for undergoing the decomposition reaction of CO2 for the first time; and compared with other active materials, the spinel active material has large oxygen releasing quantity (with the quantity of 7.4-30.6 ml/g at the temperature of 1400 DEG C), and can generate considerable quantity of CO (with the quantity of 10.8-58.6 ml/g). The active material can utilize solar energy focus generated high-temperature heat as an energy source, CO2 is taken as the reaction raw material, and CO is produced; and the method is clean and pollution-free, and is expected to become an effective technology for preparing chemical fuel through reduction of CO2 by solar energy.

Provided is a medical part with excellent antibiotic properties and antibiotic substantivity as well as high biocompatibility, and a manufacturing method therefor. After an anodic oxidation treatment, wherein a pulsed current with a frequency of 50 to 10,000 Hz is applied for an electrolytic treatment, is applied to a base material in an acidic electrolytic bath or an alkaline electrolytic bath so as to form a film, which has minute holes and/or minute protrusions and recesses preferably in the quantity of 5 x 104/mm2 or more on the surface of the base material, an iodine-impregnation treatment is applied so as to impregnate iodine or an iodine compound into said film. Polyvinyl pyrrolidone iodine, ss-cyclodextrin iodine, or silver iodine is desirable for the iodine compound. Furthermore, a biocompatible metallic material selected from Ti, Ti alloy, stainless steel, and Co-Cr alloy is desirable for the base material. The film may be formed by means of a chemical treatment, a thermal treatment, or a machining process, or a combination of these, instead of the anodic oxidation treatment. Thus, a medical part with excellent antibiotic properties and antibiotic substantivity as well as high biocompatibility can be manufactured easily and inexpensively.

The present invention discloses a method for producing pentanediol through selective hydrogenolysis of a furan derivative. According to the method, a highly dispersed copper-based composite metal oxide is adopted as a catalyst, methanol, ethanol, isopropanol or dioxane is adopted as a solvent, and a furan derivative is subjected to selective hydrogenolysis in an intermittent stirring reaction kettle or continuous fixed bed reactor at a reaction temperature of 120-180 DEG C under a hydrogen pressure of 1-10 MPa to prepare the pentanediol, wherein a catalyst precursor having a hydrotalcite layered structure is subjected to calcination reduction to obtain the catalyst, mainly a metal ion solution having CuM and an alkaline solution are subjected to a co-precipitation reaction so as to obtain the catalyst precursor, and in the catalyst, Cu is the main active component and has the content is 2-40%, and the content of the M-containing oxide and the spinel carrier is 60-98%. According to the present invention, the catalyst preparation method has characteristics of simpleness, easily available raw materials and low cost, and the prepared catalyst has characteristics of uniform component distribution, small particle size, large specific surface area and stable performance, and provides high reaction reactivity and high selectivity for the pentanediol production through the selective hydrogenolysis of the furan derivative.

The invention discloses a preparation method of a rapid prototyping material. The preparation method comprises the steps of providing raw materials, wherein raw materials comprise the following ingredients in parts by weight: 85-97.5 parts of engineering plastics, 0.5-5 parts of nanocellulose and 2-10 parts of viscosity reducer; (S1100) weighing the raw materials: drying the raw materials for 4-10 hours at the temperature of 105 DEG C, and then, weighing the raw materials according to a weight ratio; (S1200) carrying out blending modification: carrying out three-dimensional stirring and blending on the weighed raw materials for 30-90 min; and (S1300) sieving: sieving the blended raw materials by using a sieve of 70-140 meshes. The invention further discloses the rapid prototyping material obtained through the preparation method. According to the rapid prototyping material disclosed by the invention, the preparation process is simple, and the industrialization is easy to realize; and the material is short in prototyping cycle, good in thermal stability and high in mechanical strength.

The invention relates to the field of bridge design, in particular to a method for using vertical axial draught fans for conducting vortex vibration control over a long-span bridge. The vertical axial draught fans are arranged at the bottom of a main beam of the bridge, and horizontal wake streams generated after rotation of the vertical axial draught fans under the effect of incoming wind are used for disturbing regular vortex shedding of the section of the main beam. The method has the following beneficial effects that firstly, the vertical axial draught fans do not need to be arranged along the pass length in the span direction of the bridge as those in pneumatic measures commonly used currently, and the investment at a time is relatively small; secondly, the wake streams generated by rotation of fan blades are used for disturbing regular vortex shedding of the section of the main beam of the bridge, a vortex vibration control effect is obvious, and the method is suitable for bridges of different types; thirdly, rotation of the fan blades is used for generating power, and the beneficial effects of sustainability, energy conservation, environment protection and investment reduction are achieved; and fourthly, LED lamps in different colors can be installed on the fan blades, and the lamplight effect of the LED lamps rotating under the effect of natural wind has the long-span bridge landscape changing effect.

The invention provides a method for preparing a nitrogen/carbon-containing material by biomass pyrolysis and carbonization, which comprises the following steps: uniformly mixing biomass and a catalyst, and feeding the catalyst and biomass into a reactor together; in the reactor, heating to perform pyrolysis and carbonization reaction on the biomass organic material in the presence of gas containing reactive nitrogen compounds; and separating the catalyst from the solid product generated by the pyrolysis and carbonization, and collecting the residual solid after pyrolysis reaction to obtain the nitrogen/carbon-containing material.

The invention provides a bamboo charcoal odor-cleaning and formaldehyde-removing emulsion paint. The emulsion paint comprises the following components in parts by weight: 100-400 parts of waterborne resin, 1-5 parts of defoaming agent, 1-5 parts of preservative, 1-10 parts of dispersant, 100-300 parts of pigment, 100-400 parts of filler, 1-10 parts of nanometer thickener, 1-10 parts of flatting agent, 5-20 parts of nanometer inorganic anionic formaldehyde-removing additive, 40-100 parts of nanometer polymer hollow microspheres, 10-20 parts of bamboo vinegar and 0-350 parts of water. The bamboo charcoal odor-cleaning and formaldehyde-removing emulsion paint can be coated on the wall and wood; the paint film is characterized by light odor, low volatile organic compound (VOC), good hiding power and adhesion, washing and wiping resistance and the like; the harmful substances such as formaldehyde and benzene can be removed; the cost is low, the construction property is good, the environmental friend is good; and the emulsion paint is a product which combines decorative function, functionality and environmental friend together perfectly.

The invention relates to an emulsion paint for preventing mosquitoes and flies and a preparation method thereof. The emulsion paint comprises the components based on parts by weight: 100-400 parts ofnano waterborne resin with 48% of solid content, 2-5 parts of nano defoaming agent, 1-5 parts of preservative, 5-10 parts of dispersing agent, 200-500 parts of pigment filler, 1-10 parts of nano thickening agent, 1-10 parts of flatting agent, 0-10 parts of antifreeze agent, 0-10 parts of film formation auxiliary agent, 5-20 parts of nano inorganic anion antibacterial agent, 40-100 parts of nano polymer hollow microspheres, 20-80 parts of biological mosquito repellent and 0-350 parts of water. The emulsion paint for preventing the mosquitoes and the flies can be coated on the wall and the wood,has a paint film with the characteristics of good covering power, good adhesive force, scouring resistance and the like, can effectively prevent the mosquitoes and the flies from entering the room, and has the advantages of low cost, good construction property and excellent environmental protection performance, thus being taken as a product perfectly blending the three themes of decoration, functionality and environmental protection performance.

The invention discloses cellulose-based carbon fibers, a preparation method thereof and a method for preparing an electrode material and belongs to the technical field of preparation of biomass cellulose based materials. The method comprises the steps: preparing a precursor: dissolving a catalyst in water according to a preset ratio, adding a cellulose raw material, carrying out heating until boiling, evaporating water to dryness under the condition of maintaining a boiling state, and carrying out baking, so as to obtain the precursor; carrying out carburizing, catalyzing and graphitizing treatment: roasting the precursor in an inert atmosphere for the carburizing, catalyzing and graphitizing treatment, so as to obtain a metal element containing cellulose-based carbon fiber composite material; removing impurities: repeatedly washing the cellulose-based carbon fiber composite material with hydrochloric acid so as to remove metal elements from the cellulose-based carbon fiber composite material, and then, carrying out baking, thereby obtaining the cellulose-based carbon fibers. By adopting cellulose in the natural world as a raw material, the sustainabiity of the carbon fibers and lithium-ion batteries is achieved.

The application discloses an iron based metal organic framework compound, an iron based metal organic framework compound / graphene composite formed by the compound and graphene, and application thereof in a lithium ion battery as a negative active material. The iron based metal organic framework compound and the iron based metal organic framework compound / graphene composite are used as the negative electrode active material for the lithium ion battery, and have the advantages of high capacity and good cycle stability.

The invention relates to a high-voltage polymer electrolyte and a preparation method of a solid-state battery thereof, and the preparation method of the high-voltage polymer electrolyte comprises thefollowing steps: (1) dissolving a polymer in a solvent at normal temperature or by heating at the temperature of 25-120 DEG C; (2) dissolving a certain proportion of lithium salt into the mixture, wherein the mass of the lithium salt accounts for 100%-200% of the mass of the polymer; (3) adding a high-voltage additive into the mixture, uniformly stirring, then pouring the mixture into a membrane or coating the membrane with the mixture, and carrying out blast heating and drying to obtain a high-voltage-resistant composite high-voltage polymer electrolyte membrane, wherein the mass of the high-voltage additive accounts for 1%-10% of the mass of the polymer. The high-voltage polymer electrolyte is prepared by adding the high-voltage-resistant additive, has relatively low interface impedanceand relatively high ionic conductivity, and is beneficial to improving the energy density, the power density and the safety of the solid-state battery.

The invention discloses a titanium dioxide nanowire array film, and preparation and application thereof. The film uses FTO (fluorine-doped tin oxide) conducting glass as a substrate and titanium dioxide as a rutile phase, and has a regular monocrystal one-dimensional structure. The film can be used for solar energy storage and hydrogen production: in a sodium sulfate three-tank reactor in a three-electrode system, light energy formed by light source irradiation is stored onto the TiO2 nanowire film, and the stored energy is used for hydrogen production under the conditions of no sacrifice agent by using Pt as a photocathode material. The energy storage-hydrogen production method is simple to operate and green and environment-friendly in process, has the characteristics of high sustainability and the like, can implement storage and utilization of sunlight, and provides a new research direction for application of the TiO2 film in the field of photoelectric catalysis.

The invention provides a treatment device and method for slag obtained after overhauling an aluminum electrolysis cell. The treatment method comprises the following steps: crushing the slag obtained after overhauling the aluminum electrolysis cell, mixing the crushed slag with a lime fluoride retention additive, grinding the mixture, performing powder selection circulation to obtain powder, and combusting the powder in a cement kiln, so as to completely eliminate hazards and enable the aluminum electrolysis cell to completely lose toxicity. According to the treatment device and method for slag obtained after overhauling the aluminum electrolysis cell, the overall treatment process is carried out in a sealing environment, exhaust gas generated is basically dry gas and finally discharged after being combusted, so that the clean emission is realized, and the secondary atmospheric pollution is avoided; besides, residue generated is used as a cement clinker and can be effectively reutilized, the risk of secondary pollution is completely eliminated, and the environment and production safety is also realized.

The invention discloses a non-woven light-matrix sowing seedling breeding method for firs. The non-woven light-matrix sowing seedling breeding method for firs mainly includes steps that mixing coco coir, peat soil and water-retaining agent to prepare culture matrix, and preparing into a nutritious cup through a non-woven light-matrix forming machine; soaking in 0.1-0.5% potassium permanganate solution for 30 to 60 minutes before seeding, using clean water to clean, soaking the seeds in 40 to 50 degrees centigrade hot water, cooling naturally, changing water and soaking for 24 to 48 hours, and accelerating germination in a germination accelerating machine at 25 to 30 degrees centigrade after using clean water to clean; when the seeds expose white, seeding in the light-matrix nutritious cup, and covering a piece of film; after the lateral roots of the seedlings pass through the cup, fertilizing according to the time interval of 10 to 20 days, when the seedlings are 5 to 10 centimeters high, grading to a seedling tractor, exercising seedlings at the end of November, wherein the seedlings can be sold after the exercising. The non-woven light-matrix sowing seedling breeding method for firs has advantages that roots of the fir seedlings cultured on the light-matrix nutritious cup are flourishing, the nursery plants are strong, the matrix is light so that the transportation cost and forest planting cost can be lowered, and the matrix which cannot enable the plant to survive can be recycled; a constant-temperature germination accelerating box is high in germination accelerating rate and good in germination consistency and effectively improves the germination rate of fir seeds.

The invention discloses an esomeprazole magnesium enteric pellet capsule and a preparation method thereof. The esomeprazole magnesium enteric pellet capsule is formed by filling a capsule with enteric pellets, and each enteric pellet sequentially comprises a blank pellet core, a drug carrying layer, an isolating layer, an enteric layer and a protecting layer from inside to outside. Grain particle and pH value of active drug ingredients of each drug carrying layer are controlled, degradation caused by the fact that active ingredients are combined with acidic enteric coatings is prevented due to using of each isolating layer, adhesion of the enteric pellets is avoided due to using of each protecting layer, and fluidized bed coating technology is adopted, so that the esomeprazole magnesium enteric pellet capsule is high in stability and release degree, remarkable in gastric acid inhibiting effect and supportive of being widely applied in treatment of gastroesophageal reflux disease and digestive ulcer with positive helicobacter pylori. The preparation method is simple, low in production cost, environment friendly and suitable for industrialized production of the esomeprazole magnesium enteric pellet capsule.