35results about How to "Not easy to enrich" patented technology

The invention discloses a fluorine-containing polymer free of perfluoro-octanoic acid or perfluoro-octylsulfonic acid. One or more fluorinated monomers is / are subjected to liquid polymerization by using polyfluothane oxy ether acid as an emulsifier to obtain the fluorine-containing polymer free of perfluoro-octanoic acid or perfluoro-octylsulfonic acid, wherein the polyfluothane oxy ether acid is a halogen-terminated or hydrogen-terminated polyfluothane oxy ether acid emulsifier. The technical scheme mainly relates to the following three improvements: (1) the polyfluothane oxy ether acid or salt thereof selected instead of PFOA / PFOS as the fluorine-containing emulsifier can be effectively used in aqueous emulsion polymerization reaction of fluorinated monomers; (2) the prepared fluorine-containing polymer is free of perfluoro-octanoic acid or perfluoro-octylsulfonic acid, and thus, satisfies the environmental requirement; and (3) the fluorine-containing polymer conforms to the cost accounting, can greatly enhance the single-kettle yield of the equipment on the premise of not increasing the production equipment and personnel, and meanwhile, can enhance the polymerization time, polymerization yield and other production indexes.

The invention discloses an organic medicinal fertilizer with antibacterial and anthelmintic activities and a preparation method thereof. The active organic fertilizer contains 10-20 parts of Aconitum, 5-10 parts of Liwu, 4-8 parts of Artemisia chinensis, 10-15 parts of chamaejasma, 20-30 parts of Oxytropis, 2-3 parts of Drunken Horse Grass, and 5- 10 parts, 3-8 parts of Artemisia chrysanthemum stems, leaves, seeds, 50-60 parts of mushroom dregs, 10-20 parts of cottonseed meal, 5-10 parts of rice husks, crush the raw materials to replenish water, and after solid material microwave technology treatment, add According to 80g / T to 120g / T of active biological complex bacteria for composting and fermentation, the active biological complex bacteria are prepared by directly mixing Bacillus jelly-like, Bacillus megaterium, Bacillus subtilis, Glomus moses and Glomus terrestriale Antibacterial active biological organic fertilizer. The organic medicinal fertilizer provided by the invention contains antibacterial and anthelmintic components and an organic medicinal fertilizer with active organisms, and has wide application value.

The invention provides an environment-friendly aqueous film-forming foam fire extinguishing agent based on short-chain fluorocarbons, which comprises 3-10% of C4-C6 short-chain fluorocarbon surfactants and 3-25% of hydrocarbon surfactants. %, plant polysaccharide 0.1-4.5%, ion complexing agent 0.5-4.5%, antifreeze agent 10-25%, bacteriostat 0.1-1.5%, and the balance is water. Under the interaction of the above-mentioned components in the present invention, the fire extinguishing agent has excellent fire extinguishing performance. The fire extinguishing agent has excellent foaming performance and stability, fast fire extinguishing speed and long anti-resurgence time. The fire extinguishing agent does not contain PFOS, and is not easy to accumulate in the environment and organisms, so it will not cause environmental pollution. The raw materials of the fire extinguishing agent are easy to obtain, the production cost is low, and the fire extinguishing agent is suitable for industrialized production.

The invention discloses a composite brazing material for superhard abrasive brazing, a preparation method thereof, and a brazing method, belonging to the field of superhard abrasive tool manufacturing. The composite brazing filler metal includes a CuSnTi alloy phase and a reinforcing phase. The components of the CuSnTi alloy phase and their mass percentages are respectively 70-75% Cu powder, 15-20% Sn powder and 5-10% Ti powder, and the reinforcing phase is WC One of powders or ZrC powders, wherein the volume percentage of the reinforcing phase in the CuSnTi alloy phase is 5% to 40%; first, the CuSnTi alloy phase and the reinforcing phase are mechanically mixed for a period of time, and then mixed with 5% acrylic acid and 95% acrylic acid. % p-xylene binder, placed between the superhard abrasive and the surface to be welded of Q460 steel, and then placed in a vacuum brazing furnace for vacuum brazing. The superhard abrasive tool prepared after brazing of the present invention is subjected to grinding experiments, and the superhard abrasive has higher holding force and better particle grinding effect.

The invention discloses a method for high-efficiency preparation of a Maillard reaction intermediate by a low-temperature synthesis-decompression co-boiling dewatering coupling technology. The method comprises the following steps of: after heating an aqueous solution of amino acid and reducing sugar for a period of time, rapidly reducing air pressure to be below 40mbar for dewatering under the same temperature, and when no fraction flows out, restoring the system to normal temperature and normal pressure; adding food-grade alcohol into obtained dry materials, fully mixing, then carrying out decompressed evaporation and obtaining a solid Maillard reaction intermediate product. Compared with the traditional method for preparing the intermediate by heating and returning of methanol, the method disclosed by the invention has the advantages that the production cost is greatly reduced, the green-scientific-sustainable industrial design concept is met, the obtained Maillard reaction intermediate is higher in conversion rate, has stronger eating safety, and can be directly applied to foods as a food additive. Compared with the water-phase variable-temperature Maillard reaction technology, the method disclosed by the invention has the advantages that the intermediate conversion rate is increased by 370.0%, the innovation is stronger and the progressiveness is obvious.

The invention provides a production method of float glass. The method comprises the following steps: melting glass to obtain molten glass; adding a tin bath additive to molten tin at a tin bath constriction section at 650-750 DEG C; adding the molten glass to the tin bath to obtain a glass tape; and annealing the glass tape to obtain the float glass, wherein the tin bath additive is an iron-tin monotectic or hypomonotectic alloy with the mass percentage content of tin of 18-48.8% and the melting point of 1130-1400DEG C. The melting point of tin is lower than that of iron, the addition of a proper amount of tin makes the tin bath additive have a low melting point, and the temperature of the molten tin does not violently decrease when the tin bath additive is added to the molten tin in the tin bath, so bubbles are avoided. A ratio of tin to iron is proper, so after the tin bath additive is added to the molten tin, local enrichment of iron is unlikely, and bubbles can also be avoided. The use of the tin bath additive in the invention is helpful to obtain the high-quality float glass with few bubbles and small tin permeability.

The invention relates to the field of steel slag treatment and utilization, aims to solve the problems of low grinding efficiency, high energy consumption and low iron recovery rate in the existing steel slag recovery, and provides an integrated high-efficiency steel slag grinding and iron recovery system and method, wherein the steel slag is integrated High-efficiency grinding and iron recovery method, feed the steel slag flow into the steady flow bin through the steel slag feeding system; after the steel slag enters the roller press, the roller press squeezes and crushes the steel slag until the steel slag particles produce microcracks; The steel slag stream with microcracks caused by extrusion and crushing enters the vibrating screen for sieving and then enters the vertical mill for crushing and grinding. The iron and iron-containing substances exported from the grinding disc leave the vertical mill and enter the magnetic separator for further purification to produce iron fine powder products. The invention has the beneficial effects of high grinding efficiency, low energy consumption and high iron recovery rate.

The invention discloses a method for starting A2N two-stage SBR denitrifying phosphorus removal, and belongs to the field of municipal sewage treatment. The invention aims to solve the problems that in the starting process of denitrifying phosphorus removal in the prior art, the growth rate of denitrifying phosphorus removal bacteria is low, and has poor competitive power as compared with aerobic phosphorus-accumulating bacteria, so that nitrate nitrogen is required to be added for enrichment, the starting is difficult, and the cost is increased; and that direct starting of denitrifying phosphorus removal using domestic wastewater requires long acclimation time, and the sludge concentration is greatly reduced due to elutriation. According to the invention, aerobic phosphorus-accumulating bacteria and nitrifying bacteria are respectively cultivated and mixed uniformly according to the mass ratio of 2: 1; the aerobic running strengthens the nitrification-denitrification effect until the oxidation rate of ammonia nitrogen reaches more than 90%, the removal ratio of COD reaches more than 75%, 1 / 3 of the volume of the sludge is separated to enter into another reactor. The original reactor can be used as a denitrifying phosphorus removal reactor, and the two SBR reactors are operated in an A2N mode. By using the method provided by the invention, the starting speed of denitrifying phosphorus removal using actual domestic wastewater is fast, the sludge concentration after starting is high, and nitrate nitrogen is not required to be added during the starting period.

The invention discloses a dispersion which is a water-based dispersion solution composed of a fluorine-containing polymer free of perfluoro-octanoic acid or perfluoro-octylsulfonic acid and a polyfluothane oxy ether acid salt water solution used as an emulsifier, wherein the polyfluothane oxy ether acid is a halogen-terminated or hydrogen-terminated polyfluothane oxy ether acid emulsifier. The technical scheme mainly relates to the following three improvements: (1) the polyfluothane oxy ether acid or salt thereof selected instead of PFOA / PFOS as the fluorine-containing emulsifier can be effectively used in aqueous emulsion polymerization reaction of fluorinated monomers; (2) the prepared fluorine-containing polymer is free of perfluoro-octanoic acid or perfluoro-octylsulfonic acid, and thus, satisfies the environmental requirement; and (3) the fluorine-containing polymer conforms to the cost accounting, can greatly enhance the single-kettle yield of the equipment on the premise of not increasing the production equipment and personnel, and meanwhile, can enhance the polymerization time, polymerization yield and other production indexes.