8results about How to "Reduce cladding" patented technology

The invention discloses a decommissioned lithium iron phosphate positive electrode material green restoration upgrading regeneration technology, which comprises the following steps: completely dissolving a lithium salt and tea polyphenol in a solvent to obtain a reduction restoration agent solution; mixing the retired lithium iron phosphate positive electrode material with the direct reduction repairing agent solution to obtain a mixed suspension; putting the turbid liquid into a reaction kettle, heating in a drying oven, keeping the temperature for a period of time, cooling, collecting and washing to obtain a precipitate; and mixing the precipitate with an aluminum nitrate solution and a diammonium hydrogen phosphate solution, evaporating to dryness, adding a trace amount of lithium salt, and annealing in a nitrogen atmosphere to obtain the upgraded and regenerated aluminum phosphate / lithium phosphate coated lithium iron phosphate positive electrode material. According to the upgrading, repairing and regenerating technology, rich natural green reducing and repairing agent-tea polyphenol is used, and the technology is environmentally friendly and can be recycled and reused; meanwhile, the aluminum phosphate / lithium phosphate coating layer is low in price, the electrochemical performance of the lithium iron phosphate waste powder is obviously repaired and improved, and the method is suitable for industrial popularization and application.

The invention discloses an anion exchange membrane electrode and a preparation method and application thereof, and belongs to the technical field of new energy material and catalytic electrode preparation, the method comprises the following steps: S1, preparing an anode catalyst slurry comprising a hydrophobic covalent organic framework material, an anode catalyst, an anion exchange ionomer and a solvent; s2, preparing a cathode catalyst slurry of which the components comprise a cathode catalyst, an anion exchange ionomer and a solvent; and S3, respectively spraying or coating the anode catalyst slurry and the cathode catalyst slurry on two side surfaces of an anion exchange membrane or a gas diffusion layer, and carrying out heat treatment to obtain the anion exchange membrane electrode. The method provided by the invention can solve the problems of large gas-liquid-ion three-phase mass transfer resistance, easy shielding of active catalytic sites by ionomers and unbalanced water management in the membrane electrode assembly in the existing AEMWE device.

The invention relates to the technical field of oilfield sewage treatment, and particularly discloses a composite water clarifier for oilfield sewage treatment and a preparation method of the composite water clarifier. The invention relates to a composite water clarifier for oilfield sewage treatment. The composite water clarifier is prepared from the following raw materials: dual modified polyacrylamide, an imidazoline quaternary ammonium salt grafted copolymer, a scale inhibitor, an adsorbent, dodecyl dimethyl betaine, a coagulant aid and deionized water, the double modified polyacrylamide is obtained by performing double modification on polyacrylamide by using 2, 3-epoxypropyl trimethyl ammonium chloride and a hydrophobic monomer; the imidazoline quaternary ammonium salt grafted copolymer is a grafted copolymer of imidazoline quaternary ammonium salt, acrylamide and acrylamide-2-methylpropanesulfonic acid. The composite water clarifier can be used for treating high-salt and high-oil sewage generated in the middle and later periods of oilfield exploitation, has the advantages of being high in salt resistance, thorough in demulsification and good in flocculation effect, can efficiently remove oil and suspended solids, ensures that effluent reaches the standard, and meets the complex sewage treatment requirements of an oilfield.

This invention belongs to the field of peroxide production technology, specifically relating to a continuous production apparatus and method for lauroyl peroxide. The continuous production apparatus for lauroyl peroxide includes a primary reactor, to which a secondary reactor, a tertiary reactor, and a filter tank are sequentially connected. Each of the primary, secondary, and tertiary reactors is equipped with a stirrer, with a spiral plate threaded onto its upper part. A motor is connected to the top of the stirrer. A conveyor belt is installed inside the filter tank, and a mother liquor outlet is located in the center of the bottom plate. The bottom plates on both sides of the mother liquor outlet are inclined. A primary washing tank, a secondary washing tank, and a tertiary washing tank are sequentially connected to the filter tank. Each of the primary, secondary, and tertiary washing tanks is equipped with a filter screen and a sprayer. This invention employs a multi-reactor series continuous production process, resulting in higher production efficiency and more stable operation.

The invention relates to the technical field of bearings, in particular to a deep groove ball bearing with an improved structure, which comprises an outer ring and an inner ring, a cage type retainer is adaptively mounted between the outer ring and the inner ring, the cage type retainer is provided with a plurality of special-shaped mounting holes, and rolling bodies are arranged in the special-shaped mounting holes and used for separating and guiding the rolling bodies to roll at correct positions in the bearing. The deep groove ball bearing comprises an annular ring body and special-shaped mounting holes, the special-shaped mounting holes are evenly formed in the middle of the circumferential face of the annular ring body, annular baffles are arranged on the two sides of a body of the annular ring body, the annular baffles are clamped in clamping grooves of an outer ring and an inner ring respectively, and dustproof covers are arranged in the clamping grooves and located on the outer sides of the annular baffles. The guide surface is lubricated when the rolling body rotates and is lubricated, and heat can be effectively dissipated; the annular baffle can keep lubricating oil on the inner side of the cage type retainer, leakage of the lubricating oil is prevented, it is guaranteed that the bearing is continuously lubricated in the running process, the lubricating effect of the deep groove ball bearing is improved, and the service life of the deep groove ball bearing is prolonged.

The invention relates to a waste fabric disinfection treatment method, and relates to the technical field of waste textile recovery, and the method comprises the following steps: slitting operation and cleaning operation: conveying a strip-shaped textile into a cleaning barrel, and immersing the cleaning barrel in a disinfection box body to clean the strip-shaped textile. When the waste textile fabric slitting device is used, waste textile fabrics are arranged on the slitting platform through slitting operation, a slitting cutter is controlled to move longitudinally through an internal telescopic rod, the waste textile fabrics are cut into continuous strip-shaped materials under the action of the slitting cutter, and then the strip-shaped textile fabrics are cleaned; according to the textile fabric recycling device, the problem that the textile fabric wraps impurities can be solved, the content of fiber residues, caused by shredding, of the textile fabric in water can be reduced, and therefore the recycling quality of the textile fabric can be guaranteed, and the recycling cost of the textile fabric can be reduced.

The invention discloses a method for preparing battery-grade lithium carbonate by recovering lithium precipitation mother liquor, which comprises the following steps: adding calcium hydroxide into the lithium precipitation mother liquor, stirring for reaction, filtering and separating to obtain LiOH mother liquor, evaporating and concentrating the LiOH mother liquor until the concentration of Li < + > is more than or equal to 28g / L, treating to obtain LiOH concentrated liquor, adding a bottoming aqueous solution into a lithium precipitation device, and carrying out vacuum drying to obtain the battery-grade lithium carbonate. And then introducing the LiOH concentrated solution and carbon dioxide gas below the liquid level of the bottoming water through different feeding immersed tubes at the same time, controlling the pH value of the reaction liquid to be 9.5-10.5, carrying out carbonization reaction to obtain lithium carbonate precipitate, and treating to obtain the battery-grade lithium carbonate. According to the method, battery-grade lithium carbonate can be prepared by simple carbonization reaction through a production process of adding the bottoming water, the lithium precipitation mother liquor can be efficiently treated at low cost, and the method has important significance on recycling of the lithium precipitation mother liquor on a production line.

The application relates to the technical field of oilfield sewage treatment, and particularly discloses a composite water clarifying agent for oilfield sewage treatment and a preparation method thereof. The composite water clarifying agent for oilfield sewage treatment is prepared from the following raw materials: double-modified polyacrylamide, imidazoline quaternary ammonium salt graft copolymer, scale inhibitor, adsorbent, dodecyl dimethyl betaine, coagulant aid and deionized water; the double-modified polyacrylamide is obtained by double modification of 2,3-epoxypropyl trimethyl ammonium chloride and a hydrophobic monomer on polyacrylamide; and the imidazoline quaternary ammonium salt graft copolymer is a graft copolymer of imidazoline quaternary ammonium salt, acrylamide and acrylamide-2-methylpropane sulfonic acid. The composite water clarifying agent can be used for treating high-salt and high-oil sewage generated in the middle and late stages of oilfield exploitation, has the advantages of strong salt resistance, complete demulsification and good flocculation effect, can efficiently remove oil and suspended solids, ensures that the effluent meets the standards, and meets the complex sewage treatment requirements of oilfields.