55results about How to "Delay the oxidation process" patented technology

The invention discloses a method for treating chlorinated organic pollutants in underground water by using a slow-release compound repair material. The method comprises the following steps: (1), preparing charcoal through high temperature pyrolysis; (2), pre-treating zero-valent iron through acid pickling; (3), adding water into the charcoal, then adding xanthan gum and an organic carbon source, and finally, adding zero-valent iron, and through steps of treating, obtaining the slow-release compound repair material; then treating chlorinated organic pollutants in underground water by adopting an in situ injection repairing method or an in situ PRB repairing method. According to the method provided by the invention, the xanthan gum with high mechanical strength and strong mass transfer performance is used as a novel slow release embedding medium, the physical adsorbent charcoal, the chemical reductant zero-valent iron and the bioreductive drug organic carbon source are taken as effective components for composite embedding, so that gel microspheres with stable structures are formed, and the method provided by the invention has the advantages of sustained release, simple and convenient operation, low cost, environment friendliness and the like, can effectively achieve physically, chemically and biologically collaborated and enhanced remediation, and can effectively remove target pollutants.

The invention discloses a gas-blowing and slag- gathering spray gun for assisting slag-off of molten iron and a using method of the spray gun. The gas-blowing and slag-gathering spray gun comprises a gun barrel, wherein the gun barrel is provided with an opening end and a closed end; spray ports are symmetrically formed on the barrel wall, close to the closed end, of the gun barrel based on the middle axis of the gun barrel; the middle axes of the spray ports are vertical to the middle axis of the gun barrel; and the ratio of the inner diameters of the spray ports to the inner diameter of the gun barrel is (0.35-0.70):1. The gas-blowing and slag-accreting spray gun has the characteristics of being simple in structure, long in service life, stable in gas-blowing and slag-accreting operation and the like. The gas-blowing and slag-gathering spray gun disclosed by the invention is combined with the using method of the spray gun, so that the molten iron slag gathering degree can be improved, the bare area of the molten iron is increased, the erosive wear to the molten iron tank wall is small, the slag-off iron loss is low and the slag-off time is short.

The invention belongs to the technical field of metal corrosion and protection, and particularly relates to a preparation method of an anti-oxidation and hot corrosion protective coating for the metal equipment and components serving under high-temperature conditions. The preparation method is characterized by comprising the following steps of: firstly performing sand blasting and roughening of the outer surface of a metal workpiece; spraying a layer of bottom alloy on the outer surface of the metal workpiece by an electric arc spraying method, and then spraying a layer of surface alloy again; and after the spraying, performing hole sealing of the coating surface to obtain a metal workpiece with a metal-based long-acting anti-oxidation protective coating. The invention aims to realize protection by use of the method; and through the invention, the service life of the large high-temperature equipment such as a distillation reactor, an annealing pot and the like made from low-carbon steel in high-temperature environment can be prolonged, and the production and using cost is lowered.

The invention discloses a slow-release compound repair material for treating chlorine-containing organic pollutants in groundwater and a preparation method thereof. The preparation method comprises the steps of (1) preparing biochar by high-temperature pyrolysis; (2) pretreating zero-valent iron by acid pickling; and (3) adding water into the biochar, adding xanthan gum and an organic carbon source, adding zero-valent iron finally, and carrying out multi-step treatment on the obtained mixture so as to obtain a slow-release compound repair material for treating chlorine-containing organic pollutants in groundwater. According to the invention, by using the xanthan gum with high mechanical strength and strong mass transfer performance as a novel slow-release embedding agent, the biochar (as a physical adsorbent), the zero-valent iron (as a chemical reductant) and the organic carbon source (as a biological reductant) which are taken as effective components are compositely embedded so as to form constitutionally stable gel microspheres, and the slow-release compound repair material has the advantages of long-term slow-release, easy operation, low cost, environment friendliness, and the like, and can effectively realize the physical, chemical and biological synergistic reinforced repair, therefore, the material can remove target pollutants more efficiently.

The invention discloses a grain storage warehouse based on the Internet of Things. The grain storage warehouse comprises a granary management system cloud platform, an Internet of Things wireless gateway, a warehouse body, a grain face walkway plate, a crawling ladder, a grain blocking door, a first sealing heat preservation door, a second sealing heat preservation door, temperature sensors, humidity sensors, oxygen detectors, nitrogen detectors, a pest situation forecasting lamp, cameras, air conditioners, overground ventilation caged, an air feeder and a plurality of sealed heat preservationwindow sashes; and the warehouse body comprises a grain storage layer and a detection layer, and the grain storage layer and the detection layer are the first layer and the second layer of the warehouse body respectively. The invention further discloses a grain storage method. According to the grain storage warehouse and the method, the grain storage environment including the temperature, the humidity and the nitrogen content in a granary can be controlled in real time, so that the temperature inside the warehouse body is constant throughout the year, the nitrogen content is stable inside thewarehouse body throughout the year, grain decay and deterioration are avoided, and the storage time is prolonged; and meanwhile, insect pests in the granary can be monitored and killed in time, so that the insect pests are avoided.

A cannabinoid composition having an excipient including α-tocopherol and at least one isolated cannabinoid having a purity of greater than 80%. The α-tocopherol inhibits oxidation, regulates viscosity of the composition, and improves bioavailability of the cannabinoid. The composition includes a carrier oil mixed with the excipient and cannabinoid. In one embodiment, the at least one cannabinoid is an isolated cannabinoid having a greater than 80% purity, and preferably greater than 90% purity. The at least one cannabinoid is selected from the group consisting of phytocannabinoids, endocannabinoids, synthetic cannabinoids, and combinations thereof. The cannabinoid may be derived from plants other than cannabis sativa, or synthesized from fungi, bacteria, yeast or other synthetic method. Preferably the α-tocopherol comprises at least 10% w / w of the composition.

The invention provides an aqueous zinc plating sealing agent and a preparation method thereof, and relates to the technical field of zinc plating surface treatment, wherein the aqueous zinc plating sealing agent comprises the following raw materials by weight: 30-40 parts of sodium silicate, 6-10 parts of methyl polyacrylate, 3-7 parts of a defoamer, 1-5 parts of a coupling agent, 3-5 parts of a phosphite-based antioxidant, 10-14 parts of sodium nitrite, 3-9 parts of fatty alcohol polyoxyethylene ether, 4-6 parts of a film forming agent, 1-3 parts of a stabilizer, and 100 parts of water. The preparation method comprises: (1) weighing the raw materials; (2) preparing a solution a; (3) preparing a solution b; (4) preparing a solution c; (5) preparing a solution d; and (6) mixing the solutiona and the solution d. According to the present invention, the anticorrosive coating prepared by using the aqueous zinc plating sealing agent has advantages of smoothness, uniformity, no color change,strong corrosion and strong adhesion.

The invention discloses preparation of a protein-polyphenol complex and application in a Pickering emulsion. The preparation method comprises the steps as follows: under the action of magnetic stirring, dropwise adding a waxberry leaf proanthocyanidin aqueous solution to a gelatin aqueous solution to form the protein-polyphenol complex, wherein the mass fraction of the gelatin aqueous solution is0.1wt%-0.6wt% and the mass ratio of gelatin to waxberry leaf proanthocyanidin is 9:1-5:5. Binding is driven by hydrogen bonds, the formed complex has smaller average particle size and higher Zeta potential absolute value, and the complex aqueous solution can obviously reduce interface tension of oil-water interfaces and has good emulsifying performance. The complex can be used for preparing the Pickering emulsion, and phenolic substances in the complex play good antioxidant effects in the emulsion, protect oil phases and improve chemical stability of the emulsion.

The invention relates to a green low-creep MgO-C brick and a preparation method thereof. The technical scheme of the preparation method comprises the steps: performing batching on fused magnesia finepowder, titanium diboride fine powder and triethanolamine at a mass ratio of 100:(2-4):(4-6), performing even mixing at 130-135 DEG C in a vertical heating mixer so as to obtain a mixed fine powder material, performing batching on fused magnesia particles, the mixed fine powder powder, flake graphite and boric anhydride at a mass ratio of 100:(40-45):(3-6):(2-3), performing even mixing at 140-150DEG C in the vertical heating mixer so as to obtain a premix, adding glycerin with an amount of 4-5% of the weight of the premix and liquid paraffin with an amount of 2-3% of the weight of the premixto the premix, performing mixing at 160-165 DEG C in the vertical heating mixer so as to obtain a mixed material, performing press forming on the mixed material under 55-65 MPa, and performing heat treatment at 220-250 DEG C for 60-90 minutes so as to obtain the green low-creep MgO-C brick. The process is simple and environmentally friendly, the prepared product has a good environmental protectioneffect, low creep at high temperature, hydration resistance and high resistance to slag corrosion.

The invention discloses a method for treating chlorinated organic pollutants in underground water by using a slow-release compound repair material. The method comprises the following steps: (1), preparing charcoal through high temperature pyrolysis; (2), pre-treating zero-valent iron through acid pickling; (3), adding water into the charcoal, then adding xanthan gum and an organic carbon source, and finally, adding zero-valent iron, and through steps of treating, obtaining the slow-release compound repair material; then treating chlorinated organic pollutants in underground water by adopting an in situ injection repairing method or an in situ PRB repairing method. According to the method provided by the invention, the xanthan gum with high mechanical strength and strong mass transfer performance is used as a novel slow release embedding medium, the physical adsorbent charcoal, the chemical reductant zero-valent iron and the bioreductive drug organic carbon source are taken as effective components for composite embedding, so that gel microspheres with stable structures are formed, and the method provided by the invention has the advantages of sustained release, simple and convenient operation, low cost, environment friendliness and the like, can effectively achieve physically, chemically and biologically collaborated and enhanced remediation, and can effectively remove target pollutants.