556 results about "Water washing" patented technology

The application discloses an alkylation device with a circulating refrigerant impurity removal function, which comprises an alkali washing assembly, a water washing assembly, a depropanizing tower and a deisobutane tower; the alkali washing assembly and the water washing assembly are connected in series on a circulating refrigerant feeding conveying pipe; a water washing assembly discharge port is in pipeline communication with a depropanizing tower feeding inlet; and a depropanizing tower lower discharge port is in pipeline communication with a deisobutane tower feeding inlet. The device can remove SO2, sulfides such as mercaptans and free water in the circulating refrigerant of the alkylation device, thereby effectively reducing the plugging frequency of the depropanizing tower, improving the propane removal efficiency of the alkylation device system, avoiding the increase of the content of propane in the system, maintaining a better alkylene ratio in the circulating material and improving the quality of the obtained isooctane product.

The application discloses a method for solving water stain residual defects after silicon carbonitride cleaning, which comprises the following steps: step S1, providing a semiconductor substrate; step S2, depositing a silicon carbonitride film on the semiconductor substrate; step S3, performing carbon dioxide plasma treatment on the semiconductor device after step S2; and step S4, performing subsequent processes. The application can effectively remove the ammonia component without affecting the quality of the NDC film, so that the etching barrier layer NDC can remove large-particle defects through a water washing process, and the yield loss caused by the water stain defects due to the random generation of large-particle defects in the NDC process can be avoided.

The present application provides a method for extracting complex organic acid from the waste liquid of the extract of Rubus corchorifolius L.f. The waste liquid of the column chromatography effluent of the Rubus corchorifolius L.f. extract is taken, the specific gravity of the secondary waste liquid is adjusted to obtain the column loading liquid, the column loading liquid is passed through a resin column A, water washing is performed, the column effluent and the water washing liquid are collected to obtain a combined liquid 1, the combined liquid 1 is passed through a resin column B, water washing is performed, reagent C is used for elution, and the eluate is collected. The combined liquid 2 is obtained by passing through a resin column D and collecting the effluent and the water washing liquid, vacuum concentration is performed, crystallization is performed, and filtration is performed to obtain quinic acid.

This invention discloses a wet cleaning process for Topcon solar cells adapted to poly annealing, relating to the field of solar cells. The process includes alkaline polishing to control the oxide layer thickness, with intra-wafer thickness uniformity ≤ ±0.2nm and inter-wafer consistency ≤ ±0.15nm. The RCA cleaning process sequentially includes poly-coating removal cleaning, water washing, pre-cleaning, water washing, pre-acid washing, water washing, post-acid washing, water washing, pre-dehydration, and drying. The pre-cleaning involves immersing the monocrystalline silicon wafer in a 3.5%~4% (w / w) H2O2 mixed aqueous solution at 60℃~72℃ for 100s~120s. The post-acid washing involves immersing the monocrystalline silicon wafer in a 6%~8% (w / w) HF and 1%~2% (w / w) HCl mixed aqueous solution at room temperature for 100s~120s. By optimizing and adjusting the RCA cleaning process and the concentration ratio of the cleaning solution in the cleaning tank, the reaction is prevented from reaching the weak points of the oxide layer and further reacting with the doped crystalline silicon. At the same time, the cleaning process is optimized to ensure that the back surface of the silicon wafer retains a high doping concentration, reduce the surface transport resistance, and improve the fairing (FF).

The application discloses a feed oil and meat and bone meal co-production preparation process for improving protein retention rate, and relates to the field of animal feed.The preparation process comprises the following steps: S1, after crushing livestock and poultry slaughter by-products, water, lactic acid and sodium sulfite are added, and stirring treatment is conducted to obtain pretreated materials; S2, composite strain seed liquid is inoculated into the pretreated materials, and fermentation is conducted; S3, the fermented materials are heated, enzyme inactivation and sterilization treatment are conducted, and three-phase centrifugal separation is conducted to obtain upper oil, middle layer fermentation protein liquid and lower layer very fine bone residue; S4, the upper oil is subjected to water washing and vacuum dewatering to obtain feed oil; and the middle layer fermentation protein liquid and the lower layer very fine bone residue are combined and then subjected to low-temperature vacuum drying to obtain meat and bone meal.The process can effectively improve protein digestibility and protein retention rate, does not need high-temperature and high-pressure treatment, effectively retains heat-sensitive amino acids, and the product is rich in small-molecule peptides and soluble calcium and has excellent quality.

This application relates to the field of organic synthesis technology, specifically disclosing a process for preparing tert-butyl vinyl ether. The raw materials include solid tert-butanol, acetylene, tetrahydrofuran solvent, and potassium hydroxide catalyst, supplemented with auxiliary materials such as type 3A molecular sieves and activated alumina adsorbents. The preparation method involves: after dehydration and purification of the raw materials, the materials are introduced into a reaction vessel; temperature and pressure are controlled, and the reaction endpoint is monitored using an infrared spectrometer; byproducts are quenched and acetylene is recovered; the process involves multi-stage condensation, water washing to remove impurities, distillation separation, and solvent purification and recycling, with simultaneous integration of waste heat recovery and continuous material feeding. The tert-butyl vinyl ether prepared by this process, as an important fine chemical intermediate, can be used in coatings, adhesives, and polymer material modification, possessing advantages such as high purity and good stability. The preparation method achieves efficient utilization of materials and energy through multi-stage synergistic linkage, combining the advantages of green environmental protection, continuous and stable operation, and high resource utilization.

The application discloses a moisture-absorbing and sweat-releasing polyester low-elasticity filament, which comprises 85-95 parts of a copolymer type moisture-absorbing modified polyester chip, 3-8 parts of toughening compatible master batch and 2-7 parts of anti-oxidation lubrication functional master batch, and a preparation method of the moisture-absorbing and sweat-releasing polyester low-elasticity filament, which comprises the following steps: S1, drying raw materials; S2, melt extrusion; S3, pre-setting of a special-shaped section; S4, spinning cooling; S5, stretching and elasticizing; S6, wave curling setting; and S7, winding forming. According to the application, the section structure of the polyester low-elasticity filament is improved, the symmetrical crescent concave groove penetrating through the axial direction is formed, the natural capillary wetness guide path is constructed according to the inherent form of the filament body, the modification of the chemical hydrophilic coating is not needed, the integrated section groove structure is stable, the appearance can be kept complete after the weaving friction and multiple water washing, the long-lasting wicking water conveying capacity of the fabric is endowed from the fiber origin, and the disadvantage of the wetness performance attenuation after long-term use is avoided.

The application relates to a clothes processing device and a control method, which comprises a clothes processing part, a solvent part, a solvent passage and a water passage; the solvent passage is communicated with the solvent part and a clothes processing cavity of the clothes processing part respectively, and is used for transmitting clothes processing solvent in the solvent part to the clothes processing part or transmitting clothes processing solvent in the clothes processing part to the solvent part; the water passage is communicated with the clothes processing cavity of the clothes processing part, and is used for feeding water to the clothes processing part or discharging water of the clothes processing part. The application can realize dry cleaning and water washing dual functions, and can realize miniaturization and compact design.

This invention provides a method for recovering and utilizing distillation residue after solvent removal from homohydric anhydride, relating to the field of fine chemical technology. The method includes anhydride treatment, vaporization and sublimation, dissolution and recrystallization, distillation, and water washing. In this invention, the distillation residue is anhydride-treated under high temperature and negative pressure, followed by vaporization and sublimation under vacuum to separate mechanical impurities and high-boiling substances. Then, through dissolution and recrystallization, the difference in solubility between homohydric anhydride and metahydric anhydride in polar solvents is utilized to preferentially crystallize out the homohydric anhydride. The mother liquor is distilled to remove the solvent, and then colored impurities are removed by hot water washing and activated carbon adsorption. Finally, it is cooled and crystallized to obtain trimellitic acid. The homohydric anhydride obtained by this invention has a purity ≥95% and a yield of 84-89%, and the trimellitic acid has a purity ≥97% and a yield of 81-86%. This method achieves effective recovery of high-value-added components from distillation residue, demonstrating significant economic and environmental benefits and promising application prospects.

The present application relates to the technical field of textile fabric, and more particularly to a curling-preventing stretch rib fabric and a preparation method thereof, comprising the following steps: A. weaving a gray fabric by using a double-sided weaving method; B. sequentially performing loose fabric setting, boiling and bleaching, washing, neutralization and dyeing on the gray fabric to obtain a dyed gray fabric; and C. sequentially performing water washing and drying and soft setting on the dyed gray fabric to obtain the curling-preventing stretch rib fabric. The curling-preventing stretch rib fabric and the preparation method thereof are beneficial to eliminating curling and color difference under the premise of ensuring elasticity and comfortable hand feeling, so as to overcome the shortcomings in the prior art.

This invention provides a washing system and method for calcium fluoride granules produced through nucleation granulation, comprising a plasma surface activation module, a supercritical fluid extraction washing module, and an intelligent control and circulation module connected in sequence. The plasma surface activation module is used to perform surface modification and impurity weakening treatment on pre-dried calcium fluoride granules. The supercritical fluid extraction purification module is used to deeply remove impurities from the surface and pores of the granules under anhydrous conditions. The intelligent control and circulation module is signal-connected to the aforementioned modules and is used to dynamically regulate the entire purification process based on online monitoring data. The plasma surface activation module includes a vibrating fluidized bed with a reaction chamber, solving the problem of incomplete removal of stubborn surface impurities by traditional water washing. Ultimately, the surface impurity removal rate of the calcium fluoride granules is stabilized at over 95%, and the product purity reaches a high standard for resource utilization.

The application discloses a preparation method of a pitch-based sodium ion battery hard carbon negative material, and comprises the following steps: S1, pretreatment: crushing and sieving pitch raw materials to obtain pitch powder; S2, raw material mixing: uniformly mixing the pitch powder, an oxygen supplier, a catalyst and a stabilizer to form a uniform raw material mixture; S3, oxidation reaction: performing oxidation reaction on the raw material mixture obtained in the step S2 to obtain oxidized pitch; S4, acid washing treatment: washing the oxidized pitch obtained in the step S3 in an acid solution, and then performing centrifugation, water washing and drying to obtain purified oxidized pitch; and S5, high-temperature sintering: performing high-temperature sintering on the purified oxidized pitch obtained in the step S4 in a protective atmosphere to obtain a high-performance hard carbon negative material. The preparation method of the pitch-based sodium ion battery hard carbon negative material is characterized by good uniformity, high sodium storage capacity and low cost.

The application discloses a method for preparing a novel catalyst from pyrolysis carbon black of waste tires, and the method comprises the following steps: low-temperature rapid pyrolysis and high-temperature water washing by steam to obtain pyrolysis carbon black with low impurities, so that the waste of waste tires is avoided. The pyrolysis carbon black is loaded with active metals to prepare a novel catalyst, and the catalyst is used for catalyzing pyrolysis of waste plastics (polypropylene and polyethylene) rich in carbon and hydrogen to prepare hydrogen-rich synthesis gas to produce hydrogen, so that the recycling of solid waste is realized.

The utility model discloses a kind of spray water washing devices for electroplating workpiece, belong to electroplating workpiece spray field, including electroplating workpiece conveying assembly and electroplating workpiece cleaning component, the electroplating workpiece conveying assembly includes two fixed beams, the outer surface of two fixed beams is equipped with two fixed plates, the outer surface of two groups of fixed plates is commonly equipped with water storage frame, by the cooperation of bearing, rotating rod, electroplating workpiece conveying belt, driving motor, water pump and water storage frame, not only can make equipment can be automatically conveyed to electroplating workpiece and automatically cleaned to electroplating workpiece in the process of conveying, to greatly increase the cleaning efficiency of equipment to electroplating workpiece, and can make equipment can be recycled to water, to reduce the cost required for cleaning electroplating workpiece, the setting of filter frame and filter screen, can make equipment can filter after cleaning water, prevent impurities in water from causing obstruction to spray head.

The present application belongs to the technical field of energy saving and resource utilization in titanium dioxide production, and particularly relates to a method and system for heat energy utilization of a titanium dioxide gas-powder system. The method is aimed at the problems of waste of high-temperature tail gas heat energy of the gas-powder system and high energy consumption for cold preparation in the front production process, and adopts a two-stage cooling and heat energy recovery mode of "lithium bromide refrigerating unit + cooling device". The specific steps are as follows: introducing the clean high-temperature tail gas at 220-240 DEG C after dust removal into the lithium bromide refrigerating unit, driving the preparation of cold water or ice water by using the heat energy thereof, and directly supplying the front titanium liquid freezing crystallization process; then, the tail gas enters the secondary cooling device for deep cooling to below 70 DEG C for standard emission, while the circulating water is heated to hot water at 45-55 DEG C for reuse in the water washing process. The present application realizes "waste heat" preparation of "cold" and recovery of low-level heat energy through heat energy cascade utilization, the system heat recovery rate is greater than or equal to 92%, the power consumption of the lithium bromide unit is only 1 / 10 or less of the traditional refrigeration mode, and the production cost is significantly reduced.

The application discloses a kind of green and efficient pig breeding method and system, belong to the technical field of animal husbandry breeding.The method of the application includes four steps of preparation, management in the period of nursing and fattening, processing in the period of leaving and cleaning, resource recycling and facility maintenance.By spraying photocatalysis-microorganism composite functional coating on the surface of pig house, combined with AI visual dynamic precise feeding, source reduction is realized;By using bionic electronic nose and ventilation, deodorization system linkage, process intelligent control is realized;By using electrochemical circulating water washing, waste heat coupling biological filter or shared deodorization container, end efficient purification and small and medium field adaptation are realized;Finally, wastewater and waste material are recycled.The application solves the problems of unstable effect, high energy consumption, low intelligent degree, poor adaptability of small and medium field of existing odor control technology, and has the advantages of source reduction precision, process control in situ, end treatment closed loop, operation intelligence and easy popularization of small and medium field.

The application discloses a method for dehalogenation reduction of electron-rich aryl halide. The aryl halide is used as raw material, and is heated to react in the presence of phosphorous acid, iodine and a solvent, so that the corresponding aromatic hydrocarbon compound is prepared. The method directly avoids the defects of the current mainstream method, i.e. the need of using expensive transition metal catalyst and equivalent metal reagent. The electron-rich aryl halide is reduced to the corresponding aromatic hydrocarbon by one step through using the cheap, low-toxic and stable phosphorous acid as a reducing agent and iodine as a catalyst. The method has the advantages of no need of metal participation, simple operation, low cost, green environmental protection and the like, avoids the use of metal reagent and the limitation of special equipment which is not easy to be enlarged for production. After the reaction of the phosphorous acid is completed, the by-product is generally phosphoric acid and the corresponding phosphorus salt, which can be quickly removed through water washing, and the post-treatment is simple, so that the industrialized production is facilitated.

The application relates to the technical field of biological materials, and mainly relates to a cell mitochondrial organic fluorescent probe and a preparation method thereof. The cell mitochondrial organic fluorescent probe comprises the following structural formula: The cell mitochondrial organic fluorescent probe provided by the application has the effect of targeting cell mitochondria, accurate positioning, good biocompatibility, AIE characteristics and low cytotoxicity, does not need washing operation, can avoid water washing, makes the dyeing process more convenient and economical, is an excellent mitochondrial imaging material, and can effectively realize rapid targeted positioning and imaging of mitochondria.

This invention discloses a photothermal catalyst based on Ni supported on porous carbon derived from tea residue and its application in hydrogen production from waste natural biomass. The catalyst preparation method includes tea residue raw material pretreatment, preparation of tea residue-derived carbon materials, KOH chemical activation, acid washing and water washing followed by drying, then impregnation and loading with a nickel precursor, and finally reduction in a hydrogen atmosphere to obtain the catalyst. This catalyst can catalyze the biomass steam reforming hydrogen production reaction under focused sunlight irradiation. This invention organically couples the resource utilization of tea residue solid waste with the solar photothermal-driven biomass reforming hydrogen production process, achieving synergistic effects of high-value utilization of agricultural and forestry waste and clean solar hydrogen production. The process is simple, the raw materials are readily available, and it is environmentally friendly, possessing good prospects for industrial application.

The present application relates to surface treatment and environmental protection waste gas purification technical field, specifically relates to a kind of paint detection plate pretreatment water washing process and paint detection plate, by using the dynamic water film of microporous resistance flow structure from inside to outside seepage in primary interception, and using porous filter medium rotation in secondary interception, water is centrifuged to the outside, on the physical level, it builds the initiative perspiration fluid boundary layer from inside to outside, blocks the direct contact of paint mist and solid phase material, solves the problem that existing equipment is easily blocked by paint slag.

This invention relates to an automatically adjustable grinding and polishing equipment, belonging to the technical field of grinding and polishing equipment. It includes a casing, controller, door, holding assembly, tooling limiting assembly, water washing and cleaning assembly, and lens positioning plate. The holding assembly and tooling limiting assembly are housed within the casing. The water washing and cleaning assembly cooperates with the tooling limiting assembly. The lens positioning plate is engaged with the holding assembly. The controller coordinates the coordinated operation of all components. This invention achieves precise automatic adjustment of grinding pressure through the collaboration of a pressure sensor and controller, ensuring processing accuracy. The dual-station design for grinding and polishing improves efficiency. Synchronous water washing and closed-loop wastewater collection ensure environmental cleanliness and environmental protection. Fully enclosed protection and visual monitoring enhance operational safety. The modular design adapts to various workpiece specifications, enhancing versatility and ease of maintenance. The equipment has a compact overall structure, stable operation, and is suitable for batch processing of precision workpieces, making it highly practical.

The application discloses a method for recovering and purifying chloroiridic acid from an iridium-containing waste catalyst, which comprises the following steps: firstly, mixing the iridium-containing waste catalyst with a reaction aid and a solid oxide, and then performing a melting reaction under the temperature condition of 250-400 DEG C to obtain an iridium oxide melt which is hardly soluble in water; secondly, adding water to the melt to remove impurities, and then filtering to obtain the iridium oxide; finally, adding acid to the iridium oxide to obtain a chloroiridic acid solution. The method for recovering and purifying chloroiridic acid from the iridium-containing waste catalyst can obtain the iridium oxide which is only soluble in acid but hardly soluble in water after the melting reaction under the temperature condition of 250-400 DEG C, and then the metal impurities and the catalyst carrier in the catalyst can be removed by simple water washing, and the chloroiridic acid can be obtained by acid leaching, so that the method is short in route, low in cost, and suitable for industrial application; in addition, the purity of the chloroiridic acid is high (more than 99.95%), and the recovery rate is also high (more than 98%).

This invention relates to the field of printed circuit board manufacturing technology and discloses a fine etching process for PCB circuit patterns. The process includes injecting a fine etching composition comprising deionized water, hydrochloric acid, copper chloride dihydrate, anhydrous magnesium chloride, p-toluenesulfonic acid monohydrate, polyethylene glycol, and 2-mercaptobenzimidazole into a circulating working tank of an etching machine; setting the temperature of the working solution in the circulating working tank; sending the substrate to be etched, after dry film development, into a spray section; activating the spray array and setting the spray pressure to etch the substrate; and rapidly rinsing the etched substrate in a deionized water washing section, followed by strong air drying to obtain the circuit pattern. This invention reduces surface tension through specific components to promote solution penetration into the microstructure, utilizes an organic corrosion inhibitor to form a stable protective layer on the trench sidewalls, and combines the vertical impact of the nozzle jet on the bottom, leveraging the difference between mechanical force and chemical adsorption force to achieve anisotropic etching, thus suppressing lateral corrosion of fine circuits.

The application belongs to the technical field of CO2 capture, and discloses a concurrent flow type CO2 low-resistance high-efficiency absorption device and method. The device comprises an absorption chamber and a water washing and demisting chamber. The top of the absorption chamber is provided with a flue gas inlet. The flue gas inlet is provided with a gas distributor. A plurality of spray layers are arranged below the gas distributor. A filler layer is arranged below each spray layer. Each spray layer is provided with an atomizing nozzle with an upward opening. The bottom flue gas inlet of the water washing and demisting chamber is communicated with the absorption chamber. The CO2 absorption device adopts a gas-liquid concurrent flow contact mode, can avoid flooding, and has a total pressure drop of less than 500 Pa, is not sensitive to gas-liquid ratio fluctuations, is suitable for large-flow flue gas scenes, and is stable in operation. The CO2 absorption device integrates a water washing and demisting function, has a compact structure, occupies a small area, and can also reduce independent equipment investment.

This application discloses a self-coating process for anti-corrosion coating of street lamp components, comprising the following steps: pre-treating the street lamp components; immersing the pre-treated street lamp components in a self-coating tank to form an anti-corrosion coating on the surface of the street lamp components; removing the street lamp components from the self-coating tank and sequentially performing water washing and reactive water washing; then flash-drying the street lamp components; wherein the process parameters for flash-drying are: baking temperature 100-120℃, baking time 8-15min; and performing semi-curing or full-curing treatment on the flash-dried street lamp components according to the post-treatment type; wherein the post-treatment type includes powder coating or painting; if powder coating is used, the street lamp components are first subjected to semi-curing treatment; if painting is used, the street lamp components are first subjected to full-curing treatment. This application has the advantage of effectively improving the overall yield of the anti-corrosion coating of street lamp components.

The utility model relates to garbage incineration fly ash processing technical field, concretely relates to a kind of garbage fly ash water washing pre-stirring device, including stirring tank.Circulating pipeline is provided in the upper of stirring tank, circulating pipeline is sent to the upper of jar body with slurry of jar body bottom, and it is tangentially entered in the upper of jar body, and it is opposite with the direction of material stirring rotation in jar body, so it can realize the fast mixing of slurry in jar body, it is helpful to improve processing efficiency, and pneumatic conveying is used in cooperation with air distribution pipe, and the mode of flow guide cylinder, further improve pulping efficiency, and absorption is carried out to tail gas, avoid to harm environment and personal safety.The utility model can effectively improve the pulping efficiency of garbage incineration fly ash, and the device is stable, efficient, and can also avoid the influence on surrounding environment, bring convenience to actual production.