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52results about How to "Meet the requirements of green and sustainable development" patented technology

Preparation method for functional wood capable of degrading organic pollutants through photocatalysis

The invention discloses a preparation method for functional wood capable of degrading organic pollutants through photocatalysis. The preparation method comprises the following steps that wood is subjected to pretreatment, internal pores of the wood are gotten through, and hydroxyl on the surface of the wood is exposed; bismuth nitrate is taken to be dissolved in an acid solution, then, coupling agents are added, stirring is conducted, and a mixed solution is obtained; soluble iodized salts and soluble chlorate are taken to be dissolved in water, stirring is conducted for dissolving, and a halide salt solution is obtained; the pretreated wood is soaked into the mixture solution, subjected to pressurized soaking, taken out and dewatered, and the wood adsorbed with bismuth ions is obtained; the wood adsorbed with the bismuth ions is soaked into the halide salt solution, subjected to pressurized soaking, taken out and subjected to vacuum drying, and then the functional wood capable of degrading the organic pollutants through photocatalysis can be obtained. The functional wood prepared through the method is high in light use ratio, can effectively degrade the organic pollutants under visible light radiation and is good in degradation effect.
Owner:CENTRAL SOUTH UNIVERSITY OF FORESTRY AND TECHNOLOGY

Kitchen waste oil-water-solid separation device of kitchen waste

The invention discloses a kitchen waste oil-water-solid separation device consisting of a steam mixing section, a solid-liquid separation section and an oil-water separation section, wherein the steam mixing section is provided with a steam-water mixer; high-temperature steam is input from the steam inlet of the steam-water mixer; the absorption inlet of the steam-water mixer is communicated with a slag-liquid mixing groove; the injection port of the steam-water mixer is communicated with the input end of a solid-liquid separation machine; and the liquid exhaust port of the solid-liquid separation machine exhausts to an oil-water separator. According to the invention, the steam-water mixer for heating directly on a pipeline mixes high-temperature steam in crushing slag liquids, not only can the operation continuity be ensured, but also the whole treatment can be operated in a production line, continuity and scale mode, and moreover, mixed liquids output from the injection port has high temperature and high pressure, and enter the solid-liquid separator directly for solid-liquid separation, and additional delivery equipment is not required; and the efficiency is high, and the separation quality is good.
Owner:WUXI SAIYA ENVIRONMENTAL PROTECTION TECH

Method for regenerating waste lubricating oil by combining solvent extraction with composite metal oxide adsorbent

The invention discloses a method for regenerating waste lubricating oil by combining solvent extraction with a composite metal oxide adsorbent. The method comprises the steps: loading waste lubricating oil to be regenerated into a container, placing in a constant temperature drying box, depositing for at least 12 h, and removing primary upper clear oil; then adding an organic solvent to the primary upper clear oil, carrying out extraction and refining treatment, cooling the obtained oil-containing mixture to room temperature, then depositing the oil-containing mixture for at least 2 h, then removing secondary upper clear oil, next taking the secondary upper clear oil, mixing with the composite metal oxide adsorbent to form a reactant system, controlling the temperature of the reactant system to 60-90 DEG C, and decolorizing the secondary upper clear oil for 20-40 min; and finally, separating to remove a compound metal oxide decolorizer, and thus obtaining regenerated base oil. Qualityindexes of the waste oil treated by the method meet the requirement standards of the base oil, an acid-free and alkali-free process is adopted throughout the process, the yield of the regenerated oilis high, the repeated utilization rate of the adsorbent is high, and the requirements of green sustainable development are met.
Owner:SHANGHAI UNIV

Highly-oil-resistant rubber-hose inner-layer rubber material filled with low-molecular-weight PPC premix and preparation method thereof

The invention discloses a highly-oil-resistant rubber-hose inner-layer rubber material filled with a low-molecular-weight PPC premix. The highly-oil-resistant rubber-hose inner-layer rubber material comprises the following components in parts by mass: 80 parts of nitrile rubber, 20 parts of hydrogenated nitrile rubber, 50 to 63 parts of carbon black, 0 to 10 parts of alkaline white carbon black, 2.5 to 3.5 parts of a vulcanizing agent, 1.8 to 2.2 parts of a vulcanization auxiliary agent, 3 to 5 parts of zinc oxide, 1 to 2 parts of stearic acid, 2 to 3 parts of an anti-aging agent system, 4.4 to 22 parts of the low-molecular-weight PPC premix and 0 to 8 parts of a plasticizer. According to the invention, low-molecular-weight PPC is prepared into a premix, so use is convenient; meanwhile, the alkaline white carbon black is adopted to partially replace a traditional reinforcing agent namely carbon black, so mechanical properties, aging resistance and oil resistance of oil-resistant rubberhose inner-layer rubber are improved; the service life of a rubber hose is prolonged; cost and energy consumption of mixing are reduced; application of the low-molecular-weight PPC alleviates environmental pollution; greenhouse effect is reduced; and important significance of comprehensive utilization of carbon dioxide resources is realized.
Owner:常州苏橡橡塑制品有限公司

High-flash-point safe alkyd anticorrosive coating and preparation process thereof

The invention provides a high-flash-point safe alkyd anticorrosive coating and a preparation process thereof. The anticorrosive coating prepared by the invention is compounded by taking renewable high-iodine-value oleic acid alkyd resin as an adhesive and taking a high-flash-point solvent, emulsified water, a high-efficiency drier, titanium dioxide, nano barium sulfate and the like as pigments and fillers; linseed oil with a high iodine value and basic alkyd resin are used for preparing the oleic acid alkyd resin with a high iodine value, so that the compactness, dryness and water resistance of the coating are synchronously improved; the linseed oil with a high iodine value is prepared by limiting the content ratio of maleic anhydride, linseed oil and azodiisobutyronitrile, so that the hydrolytic stability of the resin is improved; the basic alkyd resin with stable gloss, gloss retention, water resistance and outdoor durability is prepared by limiting the contents of maleic anhydride, linoleic acid, benzoic acid, tung linoleic acid, pentaerythritol and isophthalic acid; and the high-iodine-value oleic acid alkyd resin is modified by hollow titanium dioxide microspheres with the particle size of 250-300nm, so that the compactness of the coating is improved, and the corrosion resistance is greatly enhanced.
Owner:无锡市造漆厂有限公司

Prefabricated hybrid fiber concrete replaceable coupling beam and preparation method thereof

The invention provides a prefabricated hybrid fiber concrete replaceable coupling beam and a preparation method thereof. The prefabricated hybrid fiber concrete replaceable coupling beam comprises a coupling beam body, coupling beam anchoring parts are arranged at the two ends of the coupling beam body, and the coupling beam anchoring parts are connected with wall columns through connecting bolts;and the connecting beam body comprises hybrid fiber concrete and beam body reinforcing steel bars, and the hybrid fiber concrete wraps the outer sides of the beam body reinforcing steel bars. The hybrid fiber concrete is obtained by mixing cement, fly ash, silica fume, sand, a water reducing agent, steel fibers, polyvinyl alcohol fibers and water. The coupling beam body is formed by pouring the hybrid fiber concrete and the beam body reinforcing steel bars, and the toughness, bending resistance and impact resistance of the coupling beam concrete are effectively improved by doping steel fibers; by doping the polyvinyl alcohol fibers, the toughness, ductility and fracture resistance of the coupling beam concrete are effectively improved, and then the coupling beam body has good anti-seismicproperty; and the coupling beam anchoring parts are connected with the wall columns through the bolts, the coupling beam can be replaced, the manufacturing process is simple, and the cost is low.
Owner:XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY

Kitchen waste oil-water-solid separation device of kitchen waste

The invention discloses a kitchen waste oil-water-solid separation device consisting of a steam mixing section, a solid-liquid separation section and an oil-water separation section, wherein the steam mixing section is provided with a steam-water mixer; high-temperature steam is input from the steam inlet of the steam-water mixer; the absorption inlet of the steam-water mixer is communicated with a slag-liquid mixing groove; the injection port of the steam-water mixer is communicated with the input end of a solid-liquid separation machine; and the liquid exhaust port of the solid-liquid separation machine exhausts to an oil-water separator. According to the invention, the steam-water mixer for heating directly on a pipeline mixes high-temperature steam in crushing slag liquids, not only can the operation continuity be ensured, but also the whole treatment can be operated in a production line, continuity and scale mode, and moreover, mixed liquids output from the injection port has high temperature and high pressure, and enter the solid-liquid separator directly for solid-liquid separation, and additional delivery equipment is not required; and the efficiency is high, and the separation quality is good.
Owner:WUXI SAIYA ENVIRONMENTAL PROTECTION TECH

Soothing essential oil capable of activating collaterals, relaxing tendons, relieving pain and preparation method

The invention provides soothing essential oil capable of activating collaterals, relaxing tendons, relieving pain and a preparation method. By limiting the components of the raw materials and adjusting a process, the stability of the essential oil is improved, and the irritation of the essential oil is reduced; cinnamon or ginger essential oil is extracted under the synergistic assistance of microwave-ultrasonic waves, so that the essential oil extraction efficiency is increased, and the extraction time is shortened; citrus pectin and citrus cellulose nanocrystals are extracted from citrus peel residues, and the citrus cellulose nanocrystals are modified, so that the volatility of the essential oil is slowed down, and the effectiveness of the essential oil is prolonged; or the citrus pectin is emulsified to improve the stability and oxidation resistance of the soothing essential oil; and the citrus pectin, chitosan powder and glycerin are used as a carrying system, an essential oil mixed solution is added. A concentration of the citrus pectin in a chitosan solution is limited to be 6.5-8 mg/mL, crosslinking of chitosan and the citrus pectin is completed, the antibacterial property of the essential oil is improved, and meanwhile, the stability of the soothing essential oil is greatly improved, the irritation is reduced, and the bioavailability is improved.
Owner:上海月月舒妇女用品有限公司

A high-strength polylactic acid functional composite material with antibacterial and electromagnetic shielding properties and its preparation method

The invention discloses a high-strength polylactic acid functional composite material with antibacterial and electromagnetic shielding properties and a preparation method thereof. The composite material comprises the following components in parts by weight: 100 parts of polylactic acid, 2 to 6 parts of nano lignin, zinc oxide 5-15 parts per silver compound. The present invention is to carry out a controllable nanometerization of the original lignin, and prepare a zinc oxide / silver composite, and use the nano-lignin to disperse the zinc oxide / silver composite in situ and cast it with a polylactic acid solvent to prepare a composite with high mechanical properties. , excellent antibacterial performance and high-efficiency electromagnetic shielding function integrated polylactic acid composite material. The invention greatly broadens the scope of application of lignin, realizes the waste utilization of lignin resources, enables lignin to play the dual roles of enhancer and dispersant, and prepares a bio-based polylactic acid functional material with multiple functions based on integration, which can It meets the requirements of the harsh use environment in the market, and also conforms to the concept of green and sustainable development.
Owner:NANJING FORESTRY UNIV

A method for recovering magnesium chloride and co-producing tetrahydrofuran from Grignard reaction waste residue

The invention relates to a method for recovering magnesium chloride and co-producing tetrahydrofuran from Grignard reaction waste residue. The method comprises the following specific steps: step 1, dissolving: passing through N 2 Under the condition of protection, the waste residue of the complex is gradually added to the dissolved water, and a small amount of hydrogen peroxide is added to the dissolved water to oxidize trimethylphosphorus into stable trimethylphosphine, and a small amount of unreacted trimethylphosphorus can be Nitrogen enters the tail gas spray absorption device to be oxidized and absorbed; step 2, rectification and recovery of tetrahydrofuran: the dissolved material is rectified to recover tetrahydrofuran, and then a small amount of water is distilled to achieve the crystallization state of the substrate; step 3, magnesium chloride hexahydrate slices: bottom After the temperature of the product rises to a certain temperature, the solidification crystallization condition of magnesium chloride hexahydrate is reached, and it can be directly cooled and sliced ​​to obtain magnesium chloride hexahydrate. By adopting the technical scheme of the invention, while recovering the magnesium chloride in the Grignard reaction waste residue, tetrahydrofuran can be co-produced to increase the recovery benefit.
Owner:SHANDONG WEIFANG RAINBOW CHEM
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