56results about How to "In line with the concept of green sustainable development" patented technology

The invention discloses a solid construction waste processing and treating system which comprises a compound crusher, a double-cone crusher, a high-frequency vibrating screen, a water separator and a stone surface treatment machine, wherein solid construction waste with the rated size is crushed into the size less than that of preset particles by the compound crusher and enters the double-cone crusher to be further crushed into particles with the size less than that of another preset particles; the crushed particles are fed into the high-frequency vibrating screen and are separated to be in grades which are smaller than or equal to a large grade, a middle grade and a small grade, the particles of different grades are fed into the water separator to separate out stones, red bricks, pure concrete particles, as well as remove floating matters; and finally, the stones with different particle sizes are fed into the stone surface treatment machine, and the concrete layers on the surfaces of the stones are removed. The system is simple in structure, the stones and other building materials which accord with the building standard can be treated, waste materials can be changed into valuable materials, and the system is environment-friendly.

The invention discloses a structurally ordered chitosan/nanocellulose composite aerogel and a preparation method thereof. The preparation method comprises the following steps of: mixing a chitosan solution with a cross-linking agent, heating to form hydrogel, and carrying out oriented freezing on the chitosan hydrogel until the chitosan hydrogel is completely solid, then, performing drying to obtain chitosan aerogel, and soaking the chitosan aerogel in the nano-cellulose dispersion liquid, and carrying out freeze drying to obtain the chitosan/nano-cellulose composite aerogel constructed by a long-range ordered structure and a honeycomb structure. The chitosan/nanocellulose composite aerogel has an ordered structure combining long-range ordering and a honeycomb network, has the properties of small density, low thermal conductivity, excellent compression resilience and the like, belongs to the field of aerogel material preparation, and can be applied to the fields of thermal insulation,tissue engineering and the like.

The invention relates to a method for increasing the yield and the polymerization degree of a polymeric phosphorus-nitrogen intumescent flame retardant, and belongs to the technical field of preparation of polymeric flame retardants. Phosphorus oxychloride, pentaerythritol and a catalyst AlCl3 are uniformly mixed at normal temperature, and a crude intermediate pentaerythritol diphosphate diphosphoryl chloride (SPDPC) is obtained; high-purity SPDPC obtained in the step 1, 4,4-diamino diphenyl sulfone and an acid binding agent are added into an organic solvent, after the materials are stirred and mixed to be uniform, a temperature increasing reaction is conducted in two stages, and the polymeric phosphorus-nitrogen intumescent flame retardant is obtained. In the synthetic process of the method, the reactants serve as a reaction solvent, therefore, the using amount of the solvent is decreased, and the aftertreatment procedure is greatly simplified; meanwhile, reverse precipitation operation and recrystallization operation are conducted on the product, and therefore the purity of the obtained product is high.

The invention discloses a rosin-based CO2/N2 response type surfactant. Maleopimaric acid and N,N-dimethyl-1,3-propane diamine are subjected to an imidization reaction to introduce a tertiary amine group capable of responding to CO2, then the product and epoxypropanol are subjected to an esterification reaction to introduce a hydrophilic group, and the prepared MPANG has good surface activity. After MPANG is dissolved in water, CO2 is introduced into the water, and the aqueous solution is weakly acidic, so that tertiary amine is protonated to form tertiary amine salt and is positively charged to become a cationic surfactant MPANGH<+>; and after N2 is introduced to expel CO2, the tertiary amine salt with positive charges is deprotonated to recover to the initial tertiary amine state. The invention also discloses the emulsifying property of the surfactant, the emulsifying property becomes better after CO2 is introduced into the surfactant and the surfactant becomes a cationic surfactant,and the obtained emulsion also has good responsiveness to CO2/N2. Furthermore, no matter whether the emulsion is stabilized by a nonionic surfactant or a cationic surfactant, the dosage of the surfactant can be greatly reduced as long as charged particles exist.

The invention discloses a method for preparing titanium dioxide by calcining metatitanic acid in a double-section rotary kiln. The method comprises the following steps: enabling metatitanic acid afterfilter pressing to successively perform dehydration in a first-section rotary kiln for calcining, and perform desulfuration, crystal type transform and grain growth in a second-section rotary kiln for calcining, to obtain a kiln falling product, and performing grinding and powder mixing on the kiln falling product, wherein a heat source of the second-section rotary kiln for calcining is from a high-temperature gas generated by calcining a natural gas, a heat source of the first-section rotary kiln for calcining is from a kiln tail gas generated by the calcining of the second-section rotary kiln, and the kiln tail gas generated by the calcining of the first-section rotary kiln successively passes through a dust collecting chamber and a bag dust collector for recovering kiln tail dust. Themethod is capable of improving the quality of the titanium dioxide, and improving a calcining recovery rate of the rotary kiln, wherein the recovery rate is up to 99.8%. The energy consumption of thenatural gas is reduced by 30-45%, and a usage amount of the natural gas is reduced.

The invention discloses a method for converting cellulose into bioethanol by a one-pot method. Raw material cellulose, W-based catalysts, Cu-based catalysts and solvents are added into a reaction kettle; the mass ratio of the W-based catalysts to the Cu-based catalysts is 5:1-1:1; the mass ratio of the raw material cellulose to the W-based catalysts is 1000:1-1:1; the mass ratio of the raw material cellulose to the solvents is 1:100-1:1. The cellulose is used as the raw material; the mixed selective fracture C-C bond W-based catalysts and selective fracture C-O bond and hydrogenation Cu-basedcatalysts are used as a catalyst system; in one reaction kettle, the one-pot method is used to obtain high-yield ethanol; the process is simple; the scale amplification is easy; the bioethanol productobtained by the method provided by the invention can be further purified by a simple distillation method.

The invention discloses a preparation method and application of shell-straw-based calcium-rich biochar. The invention belongs to the technical field of phosphorus-containing wastewater treatment and recycling. The invention aims to solve the technical problem of low adsorption capacity of an existing adsorbent for treating phosphorus-containing wastewater and recycling phosphorus in water. The preparation method comprises the following steps: step 1, soaking, cleaning, airing, grinding and sieving straws and shells; step 2, uniformly mixing shell powder and straw powder, adding deionized water, and magnetically stirring to obtain mixed gel; step 3, drying the mixed gel, and then carrying out roasting treatment in a nitrogen atmosphere; and step 4, naturally cooling to the room temperature, cleaning, drying, grinding and sieving to obtain the shell-straw-based calcium-rich biochar. The prepared calcium-rich biochar has a remarkable effect on phosphate adsorption, the adsorption capacity of the adsorbent reaches 102.5 mg/g through Ca-P precipitation, hydrogen bonds and electrostatic attraction, and phosphorus-containing wastewater is effectively treated.

The invention relates to a wet-grinding tailing-based mine filling cementing material and a preparation method and application thereof. The wet-grinding tailing-based mine filling cementing material is prepared from the following raw materials in parts by weight: 20-30 parts of tailings, 20-30 parts of water-quenched slag, 40-90 parts of water, and 1.6-4.8 parts of a powder sodium excitant. Compared with the prior art, the wet-grinding tailing-based mine filling cementing material provided by the invention adopts specific content components, can realize better interaction, can replace cement as the mine filling cementing material, is low in cost and small in pollution, remarkably improves the utilization rate of mine tailings, solves the problem of accumulation of a large amount of mine tailings, and is suitable for the concept of green sustainable development. Filler slurry further obtained by adopting the wet-grinding tailing-based mine filling cementing material provided by the invention is good in fluidity and excellent in mechanical property.

The invention discloses solid waste-based unfired high-strength ceramsite and a preparation method thereof, and belongs to the technical field of building materials. The core material of the unfired ceramsite comprises the following components in parts by weight: 32-46% of ardealite; 18%-24% of sludge incineration ash; 16%-20% of superfine slag powder; 10%-15% of III-grade fly ash; 8%-14% of cement and 0.5%-3% of insulation board particles; 0.2%-1% of ammonium bicarbonate; the shell comprises the following components: 28%-38% of ardealite; 24%-35% of superfine slag powder; 12%-20% of cement; 12%-18% of I-grade fly ash; and 1%-6% of silica fume. The secondary curing process is adopted, the core material is prepared firstly, the shell material is used for wrapping the core material after primary curing, and surface modification is carried out so that the prepared unfired ceramsite is high in strength and excellent in durability on the premise that the light weight is guaranteed.

The invention provides a method for producing fully synthetic lubricating oil by using grease as a raw material and by means of three steps of reactions. The method comprises the following steps: 1, deoxidizing the grease under the hydrogen-free condition until long-chain alkenes are obtained; 2, carrying out polymerization on the long-chain alkenes to obtain polyolefin; 3, carrying out hydrogenation on the polyolefin to obtain base oil of the fully synthetic lubricating oil; adding additives and the like into the base oil to prepare the high performance fully synthetic lubricating oil. The method provided by the invention is simple in process; the selected raw material grease comprises non-edible oil or waste catering oil, so that the raw material source is wide, the use of raw materials from fossil energy sources is avoided, and environmental pollution is reduced while the cost is lowered. The product is comb-shaped regular saturated hydrocarbon molecules containing no oxygen, has excellent properties comparable to those of polyamine oxidase (PAO), and is suitable for being used in various harsh conditions.

The invention belongs to the technical field of flame retardance, and particularly relates to a resveratrol-based flame retardant as well as a preparation method and application thereof. The molecular structural formula of the resveratrol-based flame retardant is shown in the description. The preparation method comprises the steps of dissolving resveratrol in an organic solvent, adding inorganic and organic bases, then dropwise adding diphenyl phosphinyl chloride, raising the temperature after dropwise adding is finished, continuing the reaction, filtering and precipitating the obtained product after the reaction is finished to remove the solvent, and finally obtaining the resveratrol-based flame retardant through purification and drying. According to the invention, the biomass raw material resveratrol is selected to react with the phosphorus-containing diphenyl phosphinyl chloride, and the phosphorus element is introduced, so that in the heating or combustion process of the composite material, the carbonization of the polymer can be rapidly promoted, the oxygen insulation and the heat insulation can be rapidly achieved, the release of the combustible gas and the toxic flue gas can be reduced, and the flame retardation of the composite material can be improved. Meanwhile, the resveratrol-based flame retardant has relatively high thermal stability, contains double bonds, can be subjected to an addition reaction at high temperature to form a macromolecular chain structure, and is interwoven and wound with a polymer molecular chain, so that the mechanical property of the polymer is improved.

The invention provides a high-color-fastness environment-friendly transfer paper. The high-color-fastness environment-friendly transfer paper comprises a raw paper layer and an ink bearing layer arranged on the raw paper layer, and the ink bearing layer comprises an adsorption function layer and a printing inking layer; and the adsorption function layer is attached to the raw paper layer, and theprinting inking layer is arranged on the surface of the adsorption function layer, wherein the adsorption function layer comprises 80-200-mesh particles and a first additive. According to the high-color-fastness environment-friendly transfer paper, the floating color which is not absorbed by a fabric during thermal sublimation transfer can be absorbed by arranging the adsorption function layer, sothat the color fastness is improved. Meanwhile, the emission of later sewage is reduced, volatile persistent organic pollutants generated during high-temperature thermal transfer can be absorbed, andthe green sustainable development concept is met.

The invention discloses a safe and pollution-free tomato seedling culture method. The safe and pollution-free tomato seedling culture method comprises the following steps: seed selection and germination accelerating, preparation of seedbed soil, sowing, seedling management and fertilizer supplementing. On the basis of the prior art, the seedling culture method changes part of seedling culture process, chemical agents are not added in a growing process, sterilization and disease control depend on physical and biological methods, poison influence of chemicals to seedlings is avoided, a whole seedling culture process is green and pollution-free, normal growing of tomato seedlings is guaranteed, environmental benefit is brought, and the safe and pollution-free tomato seedling culture method conforms to the green and sustainable development view of the agriculture.

The invention discloses an environment-friendly urethane foam insulation material and a preparation method of the material and belongs to the technical field of insulation materials. The material is prepared from the following raw materials in parts by weight: 100-150 parts of polyether polyol, 100-170 parts of isocyanate, 1-6 parts of catalyst, 2-7 parts of water, 2-7 parts of spent pulping liquor and 1-4 parts of foam stabilizer. The urethane foam insulation material is successfully prepared by replacing original chlorofluorocarbon with the spent pulping liquor as a foaming agent; the environmental friendliness of the urethane foam insulation material is improved; at the same time, the production cost is lowered; in addition, the spent pulping liquor is effectively utilized and changed into valuables; and the material is energy-saving and environment-friendly and meets a green and sustainable development concept.

The invention discloses a preparation method of a heterogeneous lignin/polylactic acid composite material. The preparation method comprises the following steps: dispersing lignin in water to obtain a lignin solution; adding a dispersing agent and an interfacial compatibilizer into the lignin solution, carrying out ultrasonic mixing, and then carrying out mechanical ball milling on the obtained mixed solution; carrying out freeze drying on the ball-milled mixed solution to obtain heterogeneous lignin; dissolving polylactic acid in a good solvent at room temperature to obtain a polylactic acid solution; adding the heterogeneous lignin into the polylactic acid solution, conducting stirring until a uniform mixed solution is formed, and carrying out ultrasonic defoaming; and pouring the uniform mixed solution into a planar container until the solvent is completely volatilized to obtain a heterogeneous lignin/polylactic acid film. According to the invention, the problems of poor compatibility and dispersibility of lignin in traditional high polymer materials are solved, the contradiction of difficult coexistence of high strength and high toughness of a lignin filler in the material is realized, and the material is endowed with an excellent anti-ultraviolet function, so the application field of the material is greatly widened.

The invention relates to the technical field of preparation of heat-insulating and sound-insulating composite materials, and discloses a heat-insulating poly-p-phenylene terephthalamide-foam glass sound-insulating composite material. The composite material is prepared from the following raw materials: waste glass slag, waste mineral wool board, poly-p-phenylene terephthalamide, a foaming aid, a foam stabilizer, a co-additive, a mixed co-solvent and a silane coupling agent, wherein the waste glass slag and the waste mineral wool board are recovered construction wastes such as soda lime glass wastes. The poly-p-phenylene terephthalamide-foam glass sound-insulating composite material adopts KOH as the foaming aid, and Na2B4O5(OH)4.8H2O is added as the co-additive; the KOH and the Na2B4O5(OH)4.8H2O react with SiO2 and CaO in soda lime glass to produce KNaCaSi2O6.6H2O crystals before foaming; in the heating and foaming process, the KNaCaSi2O6.6H2O crystals release steam to foam the raw materials. By adopting the method, the foaming porosity is improved, and the foaming process is stable; produced pores are very small and are uniformly distributed, so that sound waves are effectively absorbed, and the sound-insulating effect of foam glass is greatly enhanced.

The invention discloses a method capable of producing fermentable sugars from corncob residues by efficient enzymatic hydrolysis. The method comprises the following steps: (1) preparing raw materials;(2) performing pretreatment with a chemical method; (3) collecting reacted corncob residues, repeatedly washing the corncob residues multiple times until the corncob residues are neutral to obtain washed corncob residues; (4) performing enzymatic hydrolysis to obtain a hydrolysate for completion of production of the fermentable sugars from the corncob residues by efficient enzymatic hydrolysis. According to the method, the corncob residues are treated with a chemical pretreatment technique, hydrophilic performance of lignin in fiber raw materials is improved, the lignin is dissolved out easily, and accordingly, enzymatic hydrolysis yield of the corncob residues is increased; the corncob residues can be used in a higher-value manner with the method, investing cost for enzymatic hydrolysisis reduced, enzymatic hydrolysis efficiency is increased, raw material basis is provided for follow-up processing and utilization or production of products with high added value, so that application field and range of the corncob residues are expanded, and use quantity of wood fiber raw materials can be reduced effectively.

The invention discloses plastic extrusion molding equipment for renewable plastic. The equipment comprises a centrifugal cleaning device and a base, wherein a first conveying belt is fixedly installed at the bottom end of the centrifugal cleaning device, a first supporting platform is fixedly installed at the bottom end of the first conveying belt, and a smashing device is detachably installed on one side of the first supporting platform; a second conveying belt is fixedly installed at the bottom end of the smashing device, a second supporting platform is fixedly installed at the bottom end of the second conveying belt, a feeding opening is detachably formed in one side of the second supporting platform, a charging barrel is detachably installed at the bottom end of the feeding opening, a screw rod is movably sleeved with the charging barrel, and one end of the screw rod is fixedly connected with a first transmission shaft; and a first motor is fixedly mounted on one side of the upper surface of the base. According to the scheme, a cover plate with a hydraulic transmission rod of the plastic extrusion molding equipment for the renewable plastic can realize uniform feeding of plastic waste in the operation process of the equipment, so that the problem that the internal structure of the equipment is damaged due to the fact that the plastic waste is fed excessively at a time is avoided.