161results about How to "Won't happen" patented technology

The invention discloses a method for degrading dioxin in fly ash and stabilizing heavy metals, which comprises the following steps: carrying out water washing treatment on the fly ash, and carrying out solid-liquid separation to obtain water washing slag; mixing the washed slag with water, adding zero-valent iron and sulfite, carrying out hydrothermal treatment, and carrying out solid-liquid separation to obtain hydrothermal slag and hydrothermal liquid; according to the method for degradation of dioxin in fly ash and stabilization of heavy metal in cooperation with degradation of dioxin in fly ash, under the combined action of zero-valent iron, chlorite and a hydrothermal environment, efficient degradation of dioxin in fly ash can be rapidly achieved under the lower reaction condition, stabilization of heavy metal in fly ash can be synchronously achieved, and the method is suitable for industrial production. The method has the advantages of being low in cost, mild in reaction condition, high in treatment efficiency, good in treatment effect, environmentally friendly and the like, can effectively solve the problems existing in the prior art, provides powerful support for harmless treatment and resource utilization of the waste incineration fly ash, and has wide engineering application prospects.

The invention discloses an artificial ligament end fixing method and an artificial ligament. The method for fixing the end of the artificial ligament comprises the steps of S1 and S2. S1 comprises the step of installing the pull wire on a woven part formed by rolling woven cloth. And S2, binding and fixing the end part of the woven part by using a winding wire to form the end part of the artificial ligament. Wherein when the winding wire is used for binding and fixing the end part of the weaving part, the winding wire can be wound at the end part of the weaving part, and a plurality of winding wire coils are formed after winding. After the winding wire binds and fixes the end part of the weaving part, the two ends of the winding wire penetrate through the gap between at least part of the winding wire coil and the weaving part on the inner side of the winding wire coil, so that the end part of the winding wire is pressed on the weaving part by the corresponding winding wire coil, and the end part of the winding wire is fixed; moreover, when the two ends of the winding wire are pressed and fixed on the weaving part by the winding wire coil, the winding wire and the weaving part are not wound. The end part of the artificial ligament is manufactured by the fixing method of the end part of the artificial ligament.

The invention relates to a full-lamination method and device of a display device and the display device.The full-lamination method comprises the steps that firstly, a lamination area of a first panel is coated with liquid optical cement, the lamination area is covered with the liquid optical cement, then an initial glue layer is formed on one face of the first panel through a curing process, and the thickness of the initial glue layer is 0.55 mm-0. 65 mm; liquid optical cement is coated on a glue coating area of one face, deviating from the first panel, of the initial glue layer, the glue coating area is located in the central area of the initial glue layer, the area of the glue coating area is 1 / 2-4 / 5 of the area of the attaching area, and the maximum thickness of the coated liquid optical cement is 0.05 mm-0. 25mm; the second panel is placed on the side, provided with the liquid optical cement, of the first panel, pressing and defoaming treatment are conducted, and then curing is conducted to obtain the full-lamination display device. According to the laminating method, the bubble reversing phenomenon in the manufacturing process of the display device is reduced or even eliminated, the product yield is improved, the display effect of the display device is improved, and the resolution ratio, the contrast ratio and other performance are improved.

According to the solid-solid phase change heat storage laser and the preparation method, the solid-solid phase change material is used as a temperature control module, the volume pressure change caused in the phase change process is avoided, gas and fluid substances are not generated, the leakage condition is not prone to occurring, and the solid-solid phase change heat storage laser has high heat storage performance and is high in safety and reliability.

The multifunctional environment-friendly and energy-saving flowerpot comprises a pot body and a tray, a boss is arranged on a bottom layer plate of an inner cavity of the pot body, and a drainage hole is formed in the middle of the boss; one end of the honeycomb ceramic tube is communicated with the inner cavity of the pot body, the other end of the honeycomb ceramic tube penetrates through the drain hole and is flush with the lower surface of the bottom plate of the pot body or is sleeved on the boss, the thickness of the wall of the honeycomb ceramic tube is 30-40% of the diameter, the porosity of the honeycomb ceramic tube is 40-70%, and the honeycomb ceramic tube contains pelelith and chitin. According to the method, frequent watering is not needed, soil can be always kept moist and humid for growth of the plant bonsai for a long time, water accumulation is avoided, hot air generated by water evaporation can be discharged in time when the bonsai is heated at high temperature, and the bonsai cannot be dried up and heated when the room temperature rises; therefore, the potted landscape can grow normally for a long time, the pot body is bactericidal and antibacterial, water molecules are refined to be conveniently absorbed by a root system, and the functions of constant temperature, heat preservation, ventilation and the like are achieved.

The invention relates to a high-degradation layered nickel-cobalt-manganese positive electrode material single-crystallization upgrading reconstruction method, which comprises the following steps: S1, discharging a waste ternary lithium ion battery, disassembling and crushing to obtain positive electrode powder; s2, mixing the obtained positive electrode powder and the selected molten salt according to a determined proportion, grinding by using a ball mill to ensure that the molten salt and the recycled powder are uniformly mixed, then performing a lithium supplementing process under a high-temperature condition, and meanwhile, effectively removing impurities such as a residual binder and a conductive agent in the positive electrode powder; the lithium supplement heating condition is that the temperature is raised to 600 DEG C, heat preservation is performed for 2 hours, then heat preservation is performed for 4-6 hours at 910-930 DEG C, the temperature raising speed is 4 DEG C / min, and the gas atmosphere is air. And S3, the sample after lithium supplementation is completed is subjected to heat treatment in the oxygen atmosphere, impurity phase structures possibly existing on the surfaces of particles are repaired, the electrochemical performance of the regenerated material is close to the performance of a commercial battery, meanwhile, due to the unique single-crystal structure, the structural stability of the regenerated material is greatly improved. The method can be applied to recovery of various ternary lithium ion battery positive electrode materials by simply adjusting the heating temperature and the heat preservation time, and has very high application value.

The utility model discloses vacuum plating structure and vacuum plating equipment, vacuum plating structure includes: two transition chambers, be located between two transition chambers's plating chamber and be used for conveying transmission mechanism of carrier plate, transmission mechanism is located in the transition chamber, and transmission mechanism of one transition chamber conveys carrier plate to transmission mechanism of another transition chamber, so that the area of carrier plate in plating chamber is completely suspended. Transmission mechanism contains a plurality of transmission wheel groups that are arranged at intervals along the carrier plate conveying direction, and the transmission wheel group is composed of a pair of transmission wheels arranged oppositely, and the carrier plate comprises a plate body and two transmission edge frames respectively arranged on both sides of the plate body, the inner top surface of the transmission edge frame is a transmission surface, the transmission surface is placed on the transmission wheel, and the bottom of the transmission edge frame is an open mouth that is downwardly open. The utility model can reduce the film layer deposition of transmission wheel, reduce the probability of dust generated due to transmission transportation, and effectively improve the uniformity of substrate plating.

The utility model provides a compressible battery pack heat management heat insulation structure which comprises a battery pack shell, a storage battery management system BMS and battery modules, the two battery modules are arranged in the battery pack shell, and the storage battery management system BMS is electrically connected with the battery modules; each battery module comprises battery cells, compression heat insulation plates, fixed end plates, battery cell connecting aluminum palladium and bandages, the multiple battery cells are arranged side by side, the compression heat insulation plates are arranged between the adjacent battery cells, the fixed end plates are arranged on the outer sides of the battery cells arranged at the two ends, and positive electrodes at one ends of the battery cells are connected with negative electrodes at one ends of the adjacent battery cells on the same side through the battery cell connecting aluminum palladium; the positive electrodes of the battery cells at the two ends of one battery module are connected with the negative electrodes of the battery cells at the two ends of the other battery module through the battery cell connecting aluminum palladium; and the bandage sleeves are clamped on the outer sides of the fixed end plates at the two ends of the battery module. According to the battery module, compression isolation is carried out through the compression heat insulation plates between the battery cells, fixed isolation is carried out through the fixed end plates at the two ends of the battery module, and binding is carried out in cooperation with the binding bands. The compressible capacity except for the heat insulation function of the compression heat insulation plate is used for bearing the functions of extrusion and deformation recovery so as to fix the module binding band, and the cost is reduced.

The invention belongs to the technical field of solvent extraction, and particularly discloses a regeneration method of an extraction solvent. The method specifically comprises the following steps: mixing an extraction solvent with an adsorbent, and carrying out solid-liquid separation to obtain a regenerated extraction solvent and a to-be-treated adsorbent. The extraction solvent is a recovered extraction solvent after extraction operation, and the adsorbent comprises one or more of a zeolite molecular sieve, diatomite, kaolin, anhydrous magnesium sulfate and anhydrous sodium sulfate. The extraction solvent adsorbent used in the method has strong adsorption capacity, not only can adsorb water molecules entrained in the extraction solvent, but also has a very good removal effect on impurity elements enriched in the extraction solvent, and the treated extraction solvent has relatively short extraction phase separation time. The method is simple in process and low in energy consumption, the used adsorbent is low in price, adsorbed impurities can be removed at high temperature, then the adsorbent can be recycled continuously, no waste liquid is generated, and the method has remarkable environmental protection value and economic benefit.

The invention provides a method for removing photoresist residues on the side wall of a polycrystalline silicon layer, which comprises the following steps of: providing a substrate which comprises a first device region and a second device region which are adjacent to each other, forming a groove structure on the second device region, forming a first dielectric layer on the substrate, and forming the polycrystalline silicon layer on the first dielectric layer; patterning the polycrystalline silicon layer by using a first photoetching method and a first polycrystalline silicon back etching method, so that the polycrystalline silicon layer is reserved on the first device region, and forming a second dielectric layer on the surface of the residual polycrystalline silicon layer; a photoresist layer covering the first dielectric layer and the second dielectric layer is formed, the photoresist layer on the first device area is opened through second photoetching, and the photoresist layer is left on the side wall of the polycrystalline silicon layer after photoetching; removing the photoresist layer on the side wall of the polycrystalline silicon layer by using selective etching; and removing the exposed first dielectric layer and the exposed second dielectric layer, and removing the polycrystalline silicon layer on the first device region by using a second polycrystalline silicon back etching method. When the polycrystalline silicon is etched back for the second time, a fence is not generated.

The utility model discloses a heat insulation and heat preservation gel structure which comprises a base plate assembly, the top of the base plate assembly is fixedly connected with a medium layer, the top of the medium layer is fixedly connected with a colloid layer, a heat insulation layer is arranged on the right side of the base plate assembly in a penetrating mode, and the front face and the back face of the base plate assembly are fixedly connected with heat preservation layers. A mineral wool layer is arranged in the heat insulation layer and used in cooperation with the heat insulation layer, a polystyrene board layer is fixedly connected to the bottom of the mineral wool layer and used in cooperation with the mineral wool layer, and a polyurethane foaming material layer is fixedly connected to the bottom of the polystyrene board layer. The polyurethane foaming material layer is used in cooperation with the polystyrene board layer. According to the gel structure, the phenomenon that the traditional heat insulation and heat preservation effect is poor is changed, various heat insulation and heat preservation materials are adopted for heat insulation and heat preservation treatment, the phenomenon of heat loss cannot occur in the using process, and the phenomenon that the using quality of gel cannot be guaranteed is avoided.

The utility model discloses a production system for preparing 5-aminolevulinic acid hydrochloride by using 5-aminolevulinic acid fermentation liquor, and relates to the technical field of preparation of 5-aminolevulinic acid hydrochloride, a 5-aminolevulinic acid fermentation liquor tank is communicated with a ceramic membrane device, the ceramic membrane device is communicated with a first mixing and separating tank, and the first mixing and separating tank is communicated with a second mixing and separating tank. An inlet of the first mixing and separating tank is communicated with a mixed solvent tank, an outlet of the first mixing and separating tank is communicated with a first organic phase tank, and an outlet of the first organic phase tank is communicated to the second mixing and separating tank; an inlet of the second mixing and separating tank is communicated with a hydrochloric acid solution tank, an outlet of the second mixing and separating tank is communicated with a second water phase tank, an outlet of the second water phase tank is communicated to a concentration and crystallization tank, an inlet of the concentration and crystallization tank is respectively communicated with a seed crystal tank and an ethanol tank, and an outlet of the concentration and crystallization tank is communicated with a finished product tank through a pipeline. The whole process does not generate sewage which is difficult to treat, the method is environment-friendly, the steps are simple, and the product is high in yield and good in quality.

The invention discloses a continuous preparation method of 2-hydroxy-benzonitrile, which comprises the following steps: mixing o-hydroxybenzamide and an organic solvent, heating and dissolving, preparing a tower-type overflow reactor, respectively and continuously introducing the organic solution of o-hydroxybenzamide and phosgene into the tower-type overflow reactor for photochemical reaction, controlling the retention time of the photochemical reaction solution to be 0.5-3.5 hours, and carrying out vacuum distillation to obtain the 2-hydroxy-benzonitrile. And continuously feeding the photochemical reaction liquid into a hydrolysis kettle, continuously feeding water into the hydrolysis kettle at the same time, carrying out continuous hydrolysis, cooling and crystallizing the obtained organic phase, and filtering and drying crystal mush to obtain the 2-hydroxy-benzonitrile product. The method realizes continuous synthesis of 2-hydroxy-benzonitril, has the characteristics of high product content and yield, few impurities, few three wastes, small on-line liquid holdup, simple process, low cost, high automation degree and the like, and is suitable for industrial production.

The invention provides a quick pressurizing method for a single crystal furnace, which is mainly used for pressurizing an auxiliary chamber of the single crystal furnace, and is characterized in that external gas is introduced into the auxiliary chamber before the auxiliary chamber of the single crystal furnace is separated from a main chamber, so that the auxiliary chamber is recovered from a negative pressure state to a normal pressure state. According to the rapid pressurizing method for the single crystal furnace, the compressed gas is introduced into the auxiliary chamber to replace the existing inert gas, and the flow of the compressed gas is automatically controlled, so that the negative pressure state of the auxiliary chamber can be rapidly changed into the normal pressure state, no gas harmful to growth of a crystal bar is left in the auxiliary chamber, and no residual waste gas is generated on the inner wall of the auxiliary chamber; meanwhile, the use cost of inert gas for single crystal drawing can be reduced, and the utilization rate of matching of the auxiliary chamber and the main chamber is improved; according to the method, the cooling time of the auxiliary chamber can be shortened to be within 60 s from existing 4 min, the production efficiency of the whole crystal pulling process is improved, high operability and stability are achieved, safety is achieved, the automation degree is high, and personnel interference is not needed.

The invention discloses application of a bismuth-based compound in photocatalytic degradation of sulfur hexafluoride and a method for photocatalytic degradation of sulfur hexafluoride. The bismuth-based compound is one of bismuthyl carbonate, bismuth tungstate, a bismuthyl carbonate mixture and a bismuth-based heterojunction. The bismuthyl carbonate mixture is a mixture of one or more of Na2S, Na2SO3, Na2S2O3 and NaI and bismuthyl carbonate; the bismuth-based heterojunction is formed by mixing and stirring a solution containing one or more of sodium sulfide, NaI, Na2SO3 and Na2S2O3 and bismuth subcarbonate, and then drying. The compound disclosed by the invention takes a metal bismuth atom as an active site center, so that adsorption of sulfur hexafluoride can be promoted; and the substance formed in situ and the bulk material form a heterojunction to improve the photodegradation activity. Compared with a traditional technology needing vacuum, the method better conforms to the actual situation and has huge practical potential, materials used in the method do not need to be sintered, the process is simple, and the machining cost is low.

The invention discloses a manufacturing method of a display drilling screen polaroid and an OCA, and the method comprises the steps: 1, obtaining the related information of a display drilling screen according to the display drilling screen provided by a customer; 2, designing a corresponding punching die according to the obtained related information of the display drilling screen; 3, the punching die is placed on punching equipment, the punching die is positioned and fixed, and then the polaroid to be punched and the OCA to be punched are placed on the punching die to be positioned and fixed; 4, debugging punching equipment, presetting a path and a pressure index, and starting the punching equipment to respectively punch the polaroid and the OCA; the punching method is adopted, the appearances of the polaroid and the OCA can be formed at a time, the production efficiency is improved, the production time and the production cost are reduced, the edges of the polaroid and the OCA manufactured through the punching method are neat, and therefore the product quality of the polaroid and the OCA is improved, and the assembling requirement of the display drilling screen can be better met.

The utility model provides a novel multi-term extraction system for polluted soil and underground water. The novel multi-term extraction system comprises an extraction well, an extraction device, a spraying device, an oil-water separator and an oxidation-reduction treatment unit, the extraction device comprises a gas-liquid separator, a separation cavity used for installing the gas-liquid separator is formed in the extraction well, the gas-liquid separator comprises a gas-liquid separator shell, a liquid phase extraction pipe, an extraction pump and a gas phase overflow pipe, the lower end of the liquid phase extraction pipe is arranged at the bottom of the gas-liquid separator, and the lower end of the extraction pump is arranged at the bottom of the gas-liquid separator. The liquid-phase extraction pipe is provided with the extraction pump, the lower end of the gas-phase overflow pipe is communicated with the top of the gas-liquid separator shell, the gas-phase overflow pipe is connected with the spraying device, the liquid-phase overflow pipe is connected with the oil-water separator, the water-phase output end of the oil-water separator is connected with the oxidation-reduction treatment unit, and the water-phase output end of the oxidation-reduction treatment unit is connected with the water-phase output end of the oil-water separator. And the oxidation-reduction treatment unit is connected with the spraying device. The in-situ remediation device is used for in-situ remediation of underground water.

The invention discloses a method for preparing an insulating isolation layer of a temperature sensor, and relates to the technical field of electronic insulating materials. The preparation method includes the following steps: depositing a platinum resistance layer on an aluminum oxide substrate; etching the platinum resistance layer into a desired pattern; annealing the etched pattern in air to make the pattern layer dense; performing laser resistance adjustment; preparing an insulating isolation layer slurry, and coating the insulating isolation layer slurry on the substrate by immersion and pulling; after the insulating isolation layer slurry is coated, sintering is performed in air. The insulating isolation layer slurry is coated on the aluminum oxide substrate with the platinum resistance layer deposited by the immersion and pulling method. On the one hand, insulation protection of the aluminum oxide substrate with the platinum resistance layer deposited is achieved. On the other hand, the insulating isolation layer is coated by the immersion and pulling method, which will not produce radial growth orientation, and will not have pores and cracks. It has good stability and high preparation efficiency, and the thickness of the insulating isolation layer is controllable.

The utility model discloses a kind of bending devices for metal material processing, it is related to bending device technical field, including base, the front end left side fixed mounting of base has controller, the upper end of base is installed with fixed mechanism, the upper end of base is symmetrically fixed mounting with support with four corners, the top of support is fixedly installed with top plate, the lower end of top plate is installed with adjusting mechanism, the lower end of adjusting mechanism is installed with mounting frame, the inside movable mounting of mounting frame has mounting block, the lower end of mounting block is fixedly installed with bending head.The utility model is cooperated under connecting plate, screw No. 2, mounting seat, hydraulic cylinder, limit rod, limit block, motor No. 2, using rotating screw No. 2 can drive bending head to move left and right horizontally by mounting seat, and then the position of bending head can be adjusted, so that staff can adjust the position of bending, without manually adjusting bending position, it is convenient and fast to adjust, convenient for staff to use.

The invention relates to the technical field of decorative materials, in particular to flame-retardant wall cloth and a preparation method thereof. The flame-retardant wall cloth provided by the invention comprises a base cloth layer, a flame-retardant coating and a surface layer, the flame-retardant coating is formed by water-based paint coated on the base cloth layer; the surface layer is formed by a surface layer coating which is coated on the flame-retardant coating; the water-based paint comprises a water-based adhesive and an inorganic pigment filler, and the mass ratio of the water-based adhesive to the inorganic pigment filler is 1: (2-4); the inorganic pigment filler comprises an inorganic filler and titanium dioxide, the particle sizes of the inorganic filler comprise 1000 meshes and 800 meshes, and the mass ratio of the 1000-mesh inorganic filler to the 800-mesh inorganic filler is (1-2): (1-2). According to the flame-retardant wall cloth, chemical flame retardants do not need to be added, and the flame-retardant wall cloth is more environmentally friendly and safer; the flame-retardant property is more stable and cannot be reduced along with time extension; the cost of the flame retardant does not need to be additionally increased, the preparation is simple, and good economic benefits are achieved.

This invention relates to a circulating heating wastewater-free tail gas treatment device. A reaction cylinder, a second cooling device, and an adsorption cylinder are sequentially connected. The reaction cylinder includes an inner cylinder, a tail gas inlet pipe, and a heating rod. A solid catalyst is placed inside the inner cylinder, and the heating rod is located inside the inner cylinder. The tail gas inlet pipe is connected to the inside of the inner cylinder. The second cooling device includes a housing, a liquid conveying device connected to both the inside of the inner cylinder and the housing, and an atomizing device outlet connected to the inside of the inner cylinder. This invention uses the liquid conveying device to transport waste liquid from the housing to the inner cylinder. The waste liquid evaporates at high temperature, releasing small bubbles and preventing production stoppages due to excessive waste liquid in the housing. Some of the gas generated in the waste liquid reacts in the high-temperature environment inside the inner cylinder to form harmless products, reducing the amount of harmful gases adsorbed by the adsorption cylinder and increasing the service life of the packing material inside the adsorption cylinder.

The invention discloses a polyetherimide-ultraviolet light absorber composite film and a preparation method and application thereof, and the method comprises the following steps: adding a hydroxyl-containing ultraviolet light absorber into a diamine dispersion liquid to obtain a composite solution; bisphenol A type diether dianhydride is added into the composite solution in batches, stirring reaction is carried out, and composite sol is prepared; and preparing a composite film by using the composite sol, and carrying out imidization treatment on the composite film to prepare the polyetherimide-ultraviolet light absorber composite film. According to the method, a hydroxyl-containing ultraviolet light absorber is introduced, and the hydroxyl-containing ultraviolet light absorber and polyetherimide can form hydrogen bonds, so that chain segments are combined more tightly, molecular chain segments are increased, and relative movement of the chain segments is not easy to generate at high temperature, so that the thermal stability is improved, meanwhile, the weather resistance of the composite material is improved, and the service life of the composite material is prolonged. The method is simple to operate and efficient in reaction, and has wide application value.

The invention discloses a photocatalyst as well as a preparation method and application thereof, and relates to the field of catalysts. The photocatalyst is prepared by adopting a hydrothermal-calcining-photodeposition method and comprises nanoflowers formed by indium zinc sulfide ultrathin nanosheets and iridium metal atoms loaded on the surfaces of the nanoflowers. The catalyst can be applied to a free radical type photocatalytic alkylation reaction, especially an indole C-2 alkylation reaction, and the yield and selectivity of the reaction are greatly improved. The photocatalyst also has the advantages of small addition amount of noble metal, high stability and capability of catalyzing reaction under visible light, and has a wide application prospect in the field of organic synthesis.

A material pushing and cutting mechanism for a seed cutting machine comprises a rack, a cutting groove which is fixed to the rack and extends horizontally, a material pushing assembly installed at one end of the cutting groove and a cutting assembly installed at the other end of the cutting groove, and a first guide rail and a first pushing block which are parallel to the cutting groove are arranged in the material pushing assembly; the first guide rail and the second push block are perpendicular to the cutting groove, the first push block and the second push block are in linkage through the linkage rod, and the second push block is driven by the linkage rod to push seeds to be discharged in the reset process of the first push block, so that rapid material pushing and discharging are achieved, and the situation that parts need to be additionally arranged for discharging is avoided; not only is the structural complexity reduced, but also the shell breaking efficiency can be improved; during the period, the mode of rolling and breaking shells is replaced by cutting, so that chippings are not generated, the condition that the chippings and the seeds are discharged together is avoided, the process of re-screening the seeds is omitted, and the labor cost is reduced.

The invention relates to a novel method for preparing high-purity anhydrous ferric trichloride, which is technically characterized by comprising the following steps of: S1, filling 5000mg of high-purity FeCl2. 4H2O crystal particles into a polytetrafluoroethylene tank protected by argon atmosphere, heating to 220-225 DEG C by using microwaves or / and light waves, arranging a tail gas absorption device above, cooling the absorbed mixed gas to form a liquid state, collecting the liquid state for reutilization, and recycling the liquid state by using the tail gas absorption device; heating is conducted for 20 min to 30 min; s2, small blocky solids of anhydrous FeCl2 are put into a grinding machine groove protected by argon to be ground, and grinding is stopped after the diameter of particles ranges from 0.1 micrometer to 5 micrometers; and S3, loading the powdery anhydrous FeCl2 particles into a stirring and grinding reaction kettle, stirring and grinding at 50-90r / min, meanwhile, adding dried high-purity chlorine gas into the bottom of the reaction kettle, and terminating the reaction when the pressure is 0.10-0.11 MPa, the chlorine gas and the anhydrous FeCl2 powder are subjected to an exothermic reaction (90 DEG C) and Fe < 2 + > is less than or equal to 0.15 wt%, so as to obtain the powdery anhydrous FeCl3. The method has the advantages of short process flow, capability of being operated at normal temperature and normal pressure, low energy consumption required by reaction, high final product purity and the like.

The utility model relates to the field of titanium tetrachloride detection, in particular to a titanium tetrachloride test sample preparation device, which comprises a first container, a second container and a third container, the second container comprises a first liquid inlet and a gas outlet; and the U-shaped pipe comprises a second liquid inlet and a second liquid outlet which are respectively communicated with the first liquid outlet and the first liquid inlet in an airtight manner, and the second liquid inlet and the second liquid outlet of the U-shaped pipe are respectively close to the bottoms of the first container and the second container. According to the system disclosed by the utility model, titanium tetrachloride and a hydrochloric acid solution can be mixed in a closed environment, so that a stable titanium tetrachloride sample is prepared, and the titanium tetrachloride sample mixed with hydrochloric acid cannot generate hydrochloric acid mist, heat and solid particles after meeting air, so that the detection operation is greatly simplified, and the detection efficiency is improved. And carbon deposition cannot be generated during flame combustion detection, so that the element detection accuracy is greatly improved.

The application discloses an acid mine drainage treatment system and a use method thereof, and belongs to the technical field of acid mine drainage treatment. The acid mine drainage treatment system comprises an iron removal device, a neutralization device and a control device, and is characterized in that the iron removal device comprises an adjusting pool, an injection pipe arranged at the side end of the adjusting pool, a reaction mechanism arranged beside the adjusting pool, a first conveying mechanism connecting the reaction mechanism and the adjusting pool, an iron precipitation pool arranged beside the reaction mechanism, and a first connecting pipe connecting the reaction mechanism and the iron precipitation pool; the neutralization device comprises a neutralization mechanism arranged beside the iron precipitation pool, a second conveying mechanism connecting the iron precipitation pool and the neutralization mechanism, a neutralization precipitation pool arranged beside the neutralization mechanism, a second connecting pipe connecting the neutralization mechanism and the neutralization precipitation pool, a third conveying mechanism arranged at one side of the neutralization precipitation pool and a siphon mechanism. The application can realize the treatment of acid mine drainage, resource recycling and mine filling.

The present invention discloses an environmentally friendly water glass-based binder for 3D sand core printing and a preparation method thereof, and belongs to the field of binder processing technology. The present invention is used to solve the technical problems of poor fluidity of 3D printing mixed sand prepared by mixing water glass binder with 3D printing standard sand in the prior art and poor molding strength, moisture resistance and collapsibility of 3D printing sand cores. The environmentally friendly water glass-based binder for 3D sand core printing includes the following components by weight: 80-100 parts of composite water glass and 25-30 parts of composite accelerator. The binder prepared by the present invention can effectively improve the fluidity of 3D printing mixed sand, the 3D printed sand core can be formed immediately, the molded sample has good strength and moisture resistance, and the collapsibility of the sand core is good, no harmful gas is generated during the pouring process, and the used sand core molding sand can be recycled to reduce production costs, which is in line with the green and environmentally friendly manufacturing concept.

The present application provides a method for preparing a glycidyl (meth)acrylate compound of Formula 1, the method comprising reacting a (meth)acrylate compound of Formula 2 with a glycidyl compound of Formula 3 to produce the glycidyl (meth)acrylate compound, the reaction being performed in the presence of a catalyst, the catalyst being a Lewis base compound. The method enables extremely excellent target product yield and purity to be achieved at low cost and simple steps, and successfully eliminates defects associated with prior art catalysts during the reaction process. Formula 1

The utility model relates to the field of disinfection equipment, in particular to a chopstick box based on an ozone sterilization and disinfection control circuit, which comprises the following components: an upper cover and a bottom box which are connected into a whole through a hinge; the disinfection structure is arranged on the upper cover, the disinfection structure comprises a control panel and a disinfection device, the storage cavity is formed between the upper cover and the bottom box and used for containing chopsticks, the heat conduction plate is arranged on the bottom box, and ozone can be generated through an ozone generator arranged on the upper cover and the chopstick box. The chopsticks in the storage cavity are efficiently sterilized and disinfected. Ozone has strong oxidizing capacity and can quickly kill microorganisms such as bacteria and viruses, so that sanitation and safety of the chopsticks are ensured, diseases are effectively prevented from entering the chopsticks from the mouth, and the chopsticks can be quickly and effectively dried, bacterium breeding is avoided, and dryness and sanitation of the chopsticks are kept through combined use of the heat conducting plate and the drying fan.