49results about How to "Reduce recycling steps" patented technology

The invention discloses a method for improving the dispersibility of insoluble sulfur. The method comprises the following steps: selecting an organic matter having the melt point or the softening point being 40-100 DEG C as a dispersible material; heating to enable the dispersible material to be kept a molten state before filling oil to the dispersible material; then, uniformly spraying the molten dispersible material onto the surface of the insoluble sulfur in a mist form; carrying out filled sealing on micropores on the surface of the insoluble sulfur; carrying out oil filling after the dispersible material and the insoluble sulfur are sufficiently mixed. According to the method disclosed by the invention, the use of an organic solvent can be avoided by defining and improving the melt point or the softening point of the dispersible material and adding the dispersible material at a molten state in a spraying manner before oil filling rather than an organic solvent dissolving manner, and recovery steps of the organic solvent are also reduced, so that the consumption of resources and energy sources is reduced; meanwhile, the method is simple and feasible, and is beneficial for improving the production efficiency.

The invention relates to a synthetic method of pyridinium hydroxy propyl sulfobetaine. The synthetic method comprises the following steps: sufficiently dissolving hydrosulphite or pyrosulfite in water at normal temperature, adding sodium sulfite as an auxiliary sulfonating agent to adjust the pH value of the system to be 5.2-5.5, and then adding polyether F-6 as a catalyst; then adding a complexing agent, controlling the environment conditions, adding epichlorohydrin, and carrying out loop-opening reaction to obtain 3-chloro-2-hydroxy propanesulfonate; adding pyridine to the system, controlling the temperature to carry out reflux reaction, adding triethylamine as an impurity removing agent, reacting for 1 hour, then dehydrating and decoloring, adjusting the pH to 2-5, and adding 4-hydroxyl-2, 2, 6, 6-tetramentylniperidine-1-oxygen radical as a stabilizer and a vitamin C derivative to obtain an aqueous solution of the pyridinium hydroxy propyl sulfobetaine. The pyridinium hydroxy propyl sulfobetaine synthesized by the synthetic method is produced by adopting a one-pot method, which accords with the electroplating industry development demands at present; the pyridinium hydroxy propyl sulfobetaine is low in impurity content, good in appearance and low in production cost.

The invention relates to a process for synthesizing p-tert-butylbenzoic acid. The process comprises the following steps of: adding p-tert-butyltoluene and cobalt acetate into a reaction kettle, introducing oxygen-containing gas, triggering at the temperature of between 150 and 155 DEG C, performing oxidation reaction for 0.5 to 1 hour, and continuously reacting at the temperature of between 135 and 145 DEG C for more than 5 hours to obtain a p-tert-butylbenzoic acid crude product; cooling the p-tert-butylbenzoic acid crude product to crystallize, performing centrifuge dripping, and striking and washing by using p-tert-butyltoluene to obtain a centrifugation crude product; and adding the centrifugation crude product into a dissolution kettle, adding methylbenzene, raising temperature and dissolving, filtering when a mixture is hot to remove impurities, adding water to wash, transferring materials to a recrystallization kettle, cooling to crystallize, centrifuging, striking and washing by using methylbenzene, and drying to obtain a p-tert-butylbenzoic acid finished product. The prepared p-tert-butylbenzoic acid is white crystals and does not contain mechanical impurities; and the melting point is 164.0 to 167.0 DEG C, the acid value is 312 to 316mgKOH/g, high performance liquid chromatography (HPLC) purity is more than or equal to 99.2 percent, moisture is less than or equal to 0.08 percent, and methylbenzene is less than or equal to 0.05 percent.

The invention discloses an electrochemical synthesis method of a 3-aryl seleno quinolinone compound. According to the method, a solution containing a quinolinone compound, diaryldiselenide and potassium iodide is used as an electrolytic solution, a glassy carbon anode and a glassy carbon cathode are placed in the electrolytic solution, direct current is introduced, and an electrochemical reactionis carried out to obtain the 3-aryl seleno quinolinone compound. The method has the advantages of mild reaction conditions, simple operation, environmental protection, easily available raw materials,excellent compatibility of substrate functional groups, high reaction yield and the like.

The invention discloses a machining method of a recycling sanding machine for an iron plate. The method mainly comprises the following steps of abrasive paper mounting, plate sanding machining, dust clearing and waste recycling, machining equipment used in an iron plate recycling type sanding machine machining process comprises a shell and a holding handle mounted on the outer wall of the shell, two grinding mechanisms are symmetrically mounted on the inner wall of the shell, each grinding mechanism comprises a motor fixed to the inner wall of the shell, an output shaft of the motor is fixedlyprovided with a rotating shaft rotatably connected with the inner wall of the shell, and the method has the advantages that through arranging of two motors with the different rotating directions, grinding directions of two grinding belts are different, the grinding effect is better, the defect of unevenness brought by a small contact can be removed, whole sanding treatment is greatly improved, through one-time moving, two-time machining is finished, the machining efficiency of the same position can be greatly improved, and the whole machining speed is improved.

The invention discloses a positive plate, a preparation method of the positive plate, a solid-state lithium ion battery, a semi-solid-state lithium ion battery and a preparation method of the semi-solid-state lithium ion battery. The positive plate comprises a current collector and a positive electrode slurry layer covering the current collector, and a plurality of holes are formed in the positive electrode slurry layer. The positive electrode slurry layer comprises a positive electrode active material, a sulfide electrolyte material and a binder. According to the positive plate, a thick electrode is adopted, the loading capacity of the positive electrode is increased, meanwhile, a porous structure is adopted, the surface area of the positive plate is increased, transmission channels of lithium ions are increased, and the transmission performance of the lithium ions is improved. The preparation method of the positive plate reduces the cost of a battery. According to the semi-solid lithium ion battery, a lithium ion transmission channel is added, and a liquid electrolyte is injected, so that good contact between the solid electrolyte and the active substance can be ensured, the lithium ion transmission distance is shortened the dynamic performance of the battery is improved, and the low-temperature capacity, the normal rate capability, the normal-temperature cycle life and the 45 DEG C high-temperature cycle performance of the battery are improved.

The invention discloses a microbial fuel cell with a photocatalytic material loaded on a positive electrode and a preparation method and application of the microbial fuel cell, and belongs to the technical field of environment water pollution treatment and energy recovery. The photocatalytic material is loaded on the positive electrode of the microbial fuel cell, a negative electrode is an air electrode; and a resistor is connected between the positive electrode and the negative electrode. The preparation method comprises the following steps: dissolving the photocatalytic material, coating onthe surface of a carbon electrode, heating to obtain the carbon electrode loaded with the photocatalytic material, taking the carbon electrode as the positive electrode and the air electrode as the negative electrode, connecting the resistor between the positive electrode and the negative electrode; connecting the positive electrode, the negative electrode and the resistor in series, putting in areactor, and forming the microbial fuel cell with the photocatalytic material loaded on the positive electrode. The microbial fuel cell with the photocatalytic material loaded on the positive electrode can rapidly thoroughly degrade the organic matters like chlorophenols, and the electricity generation performance of the fuel cell is improved.

The invention belongs to the technical field of traditional Chinese medicine preparations, and particularly relates to a Dong medicine for promoting wound healing. The Dong medicine is composed of camellia oil as base oil, plant soot, lithospermum, bletilla striata, ninebark, agrimonia pilosa and other medicinal materials by combining folk medicine experience of the Dong nationality with traditional medicine knowledge, has effects of resisting bacteria, diminishing inflammation, decaying carrion and generating new muscles, and can promote wound healing, shorten treatment cycle and reduce formation of scars.

The invention discloses a synthetic method of 3-[2-(ethylhexyl)oxyl]-1,2-propandiol, which relates to the field of synthesis of daily chemical additives. The invention aims at providing a synthetic method with high yield. According to the technical scheme, the synthetic method comprises the following steps: step 1: adding 1,2-epoxy-3-[(2-ethylhexyl)oxy]-propane and a catalyst into acetic anhydride, and reacting for 1 to 2h to obtain a midbody; step 2: adjusting the pH of the system to be 12 to 14, stirring for 1h, standing, and layering; and step 3: washing an oil phase by successively utilizing ammonium chloride solution and water, rectifying the oil phase, and obtaining the 3-[2-(ethylhexyl)oxyl]-1,2-propandiol. The synthetic method is used for preparing high-purity 3-[2-(ethylhexyl)oxyl]-1,2-propandiol.

The invention relates to a method for combining waste ternary positive electrode material recovery and electrochemical hydrogen production. The method comprises the following steps of (1) recovering a waste ternary positive electrode material and carrying out mechanical activation, sieving and drying on the same to obtain waste ternary positive electrode material recovered powder; (2) mixing the waste ternary positive electrode material recovered powder with a conductive agent and an adhesive, dispersing the same in an N-methyl pyrrolidone solution, and carrying out coating, and drying to obtain a pole piece; (3) taking the pole piece as a positive electrode, taking an inert electrode as a negative electrode, charging the same in an electrolyte solution, generating hydroxide precipitates of nickel and manganese at the positive electrode, and generating hydrogen at the negative electrode; and (4) after the reaction is finished, carrying out solid-liquid separation on a reaction system to obtain a lithium-rich solution, the hydroxide precipitates of the nickel and the manganese and the positive pole piece, and carrying out high-temperature calcination on the positive pole piece to obtain an oxide of cobalt. According to the method, the resource recycling of the waste ternary positive electrode material is realized in a simple, quick, low-energy-consumption and environment-friendly mode.

A process for producing thermally inhibited starch, specifically thermally inhibited non- pregelatinized granular starch, is described, resulting in a viscostable starch product. The process comprising providing an alkaline starch, specifically an alkaline non-pregelatinized granular starch,having a pH of at least 8; subjecting the starch to a hydrothermal treatment, specifically to obtain a hydrothermally treated non-pregelatinized granular starch, said hydrothermal treatment being at a temperature of 45-200DC with steam at a steam pressure of 0.1-15 bar or a gas mixture comprising water vapor at a partial water vapor pressure of 0.1-1 bar; dehydrating the starch, specifically the hydrothermally treated non-pregelatinized granular starch,to a moisture content of 2 wt% or lower and subjecting the starch to a thermal treatment by heating the starch to a temperature of 120-190DC to obtain viscostability,cooling and optionally further processing the starch.

The invention relates to a synthesis method of a cyromazine active compound with high yield, cyanuric chloride, cyclopropylamine and ammonia gas are used as raw materials, single toluene is used as a solvent to synthesize the cyromazine active compound, the purity is more than 98%, and the yield is as high as 93%. The method has the characteristics of simplicity in operation, high solvent utilization rate, high product yield, less environmental pollution and the like. The labor load of workers is reduced, the production cost is reduced, and the environmental pollution is reduced.