42results about How to "Dissolution achieved" patented technology

The invention relates to hydrothermal carbon spheres for supporting nanosilver by using a one-step method and a preparation method and application of the hydrothermal carbon spheres. The preparation method comprises the following steps: removing impurities from whole collected biomass components, washing, drying, preparing fine granules under the external mechanical actions of a crushing machine and a ball mill, dissolving the whole biomass components into a sodium hydroxide / urea system, after the solution is dissolved, dropping a prepared silver ammonia solution, uniformly mixing, pouring theuniformly mixed solution into a high-temperature high-pressure reaction kettle, carrying out a hydrothermal reaction, and after the hydrothermal reaction is completed, carrying out centrifugation, washing, ultrasonic treatment, centrifugation and freeze drying on the solution, thereby obtaining the nanosilver supported hydrothermal carbon spheres finally. By adopting the hydrothermal carbon spheres, the defects that nanosilver is liable to aggregate, instable and too rapid in leakage can be alleviated, the application range of the hydrothermal carbon spheres as a nanosilver carrier is widened, and whole biomass components such as agriculture and forestry biomass wastes can be sufficiently utilized.

The invention relates to a cellulose solution and a preparation method thereof. The preparation method comprises the following steps of soaking the raw material of cellulose into water at the temperature of 15 to 30 DEG C, and drying, so as to obtain the swelled cellulose; mixing the cellulose and a polarity organic solvent, so as to obtain a cellulose dispersion liquid; mixing the cellulose dispersion liquid and tera-alkyl quaternary ammonium base at the temperature of 15 to 30 DEG C, so as to obtain the cellulose solution; mixing under the stirring condition, wherein the stirring speed is 200 to 400r / min, and the stirring time is 2 to 6h. The preparation method has the advantages that the cellulose is directly dissolved at the temperature of 15 to 30 DEG C, and the degrading of cellulosedue to high temperature can be effectively inhibited; the yield rate of regenerated cellulose in the cellulose solution is greater than or equal to 80%, so that the cellulose can be dissolved at highefficiency.

The invention discloses a method for efficiently extracting longan seed polyphenols. The method comprises the following steps: (1) pulping and radiation treatment: mixing fresh longan seeds and deionized water, pulping, adding an organic acid solution, heating to 45-50 DEG C, and carrying out 60Co ionizing radiation treatment for 30-60 seconds to obtain a radiated pulp; (2) leaching and filtration treatment: adding a composite enzyme into the radiated pulp in a nitrogen protective atmosphere, extracting at 60-70 DEG C under reflux for 2-3 hours, filtering the leaching solution through an ultrafiltration membrane, and collecting the filtrate; (3) reduced pressure concentration and extraction treatment; and (4) adsorption and drying treatment. The ionizing radiation is matched with the organic acid solution to treat the pulp, thereby lowering the polyphenol binding capacity. The composite enzyme is added in the leaching process to break through the chemical bonds for binding the polyphenols, thereby enhancing the polyphenol product yield. The method is simple to operate, and has the advantages of high extraction efficiency and the like.

The invention relates to a method for determining total sulfur in fluorite. The method comprises a step of sample drying, a step of sample dissolving, a step of working curve drafting and a step of the determination of sulfur in a sample solution. The determination method has the advantages of simple operation, less application amounts of reagents and the sample, and short detection measure time, and can satisfy rapid and accurate detection requirements; and an acid dissolving solution composed of nitric acid, hydrofluoric acid and perchloric acid adopted in the invention realizes the dissolving of sulfur in fluorite at a low dissolving temperature, and effectively reduces the overlapping and cross interferences of impurity elements in fluorite to the spectrum, so the sensitivity is high, the measure accuracy and the measure precision are high, and the measure consistency of fluorite ores in different regions and having different types is good.

The invention discloses an in-vehicle pollution remover, and belongs to the technical field of automobile deodorants. The remover comprises the following components: 0.8 to 1.2 percent of ammonium acetate, 0.23 to 0.27 percent of triglyceride, 0.002 to 0.004 percent of menthol, 0.23 to 0.27 percent of sodium chloride, 0.25 to 0.35 percent of glycine and the balance of distilled water. The remover is an oil-in-water environment-friendly product, is prepared from amino acid and plant essence, is slightly fragrant and free of harmful components, and does not have any harmful effects on human health. The product is smeared and spread in a vehicle and on an ornament to be in full contact with an odor source such as formaldehyde, benzene, xylene and TVOC in the vehicle, and is wiped and cleaned after being naturally dried to remove odor in the vehicle with the removal rate of more than 99.3 percent.

The invention discloses aluminum sulfate dissolving equipment and an aluminum sulfate dissolving method, and belongs to the technical field of chemical industry equipment. The aluminum sulfate dissolving equipment comprises a circulating tank, a dissolving pool, an air compression air pipeline and a breaking device, wherein the circulating tank is provided with a water pipeline and a steam pipeline, a gas discharge pipe and a liquid inlet are arranged on the top portion, a circulating liquid discharge port and a finished product liquid discharge port are arranged on the bottom portion, the liquid inlet of the dissolving pool is communicated to the circulating liquid discharge port of the circulating tank, the liquid discharge port on the bottom of the dissolving pool is communicated to theliquid inlet on the top portion of the circulating tank through a liquid outlet pipeline, a conveying pump is arranged on the liquid outlet pipeline, the air compression air pipeline is used for introducing gas into the bottom portion of the dissolving pool, and the breaking device is arranged above the dissolving pool and is used for breaking blocky aluminum sulfate. According to the present invention, the aluminum sulfate dissolving method adopts the aluminum sulfate dissolving equipment; and the aluminum sulfate dissolving equipment can achieve cyclic dissolution, has characteristics of high efficiency, labor intensity reducing and high automation degree, and can achieve continuous production.

The invention discloses an oil gas production increasing device and method based on combination of liquid electric pulse shock wave injection increase and chemical agent injection increase. The combination production increasing device is mainly composed of a well operating instrument 1, coiled tubing 2 and a liquid electric pulse shock wave emitter 3. According to the oil gas production increasingmethod, liquid electric pulse shock wave injection increase and chemical agent injection increase are combined for operation, shock wave operation is conducted on an oil gas well perforation sectionand rock strata nearby the oil gas well perforation section, perforation plugging objects are physically crushed, micro-cracks of the nearby rock strata are increased, and permeability is improved. Synchronously-injected chemical agents can be transmitted to the deeper rock strata under the effect of shock waves and meanwhile can better dissolve the viscous plugging objects under the disturbance effect of the shock waves, and permeability of the rock strata is improved. The operation steps are simple, the advantage of shock wave production increasing and chemical production increasing can be combined, the device and method are suitable for vertical and horizontal wells, the production increasing effect is remarkable, and the effective time of shock wave production increasing and chemical production increasing which are simplex in function effect is longer.

The invention belongs to the technical field of waste recycling and discloses a copper-based nickel plating-gold plating layer waste plating piece metal gradient recovery method. The method comprisesthe following steps of 1, putting plating pieces into ethyl alcohol to conduct cleaning to remove surface greasy dirt and then conducting cleaning through deionized water; 2, conducting gold solutiontreatment on the cleaned plating pieces; 3, conducting nickel solution treatment on the plating pieces subjected to gold solution treatment; 3.1, washing the surfaces of the plating pieces subjected to gold solution treatment through deionized water. Through the copper-based nickel plating-gold plating layer waste plating piece metal gradient recovery method, reaction is controllable; a gold plating layer on the outermost side of a base body can be quickly and selectively removed in priority, corrosion dissolution to a metallic nickel layer under the gold plating layer is small, and the purpose of separating and recycling metallic gold is achieved; the metallic nickel layer on the surface of each degolded plating piece is selectively separated and recycled; and finally, selective separation and recycling of gold, nickel and copper in the plating pieces are realized.

The invention provides a high-temperature-resistant honeycomb core strip adhesive and a preparation method and application thereof, and belongs to the technical field of honeycomb core material preparation. The core strip adhesive is prepared from the following components in parts by mass: 100 parts of polyimide resin; 5-60 parts of an active modifier; 10-35 parts of thermoplastic resin; 1-15 parts of inorganic nanoparticles; 150-350 parts of solvent. The preparation method comprises the following steps: adding 1 / 4-1 / 3 of the thermoplastic resin into the active modifier, dissolving at 100-150DEG C, cooling to below 80 DEG C, adding the remaining thermoplastic resin and inorganic nanoparticles into the active modifier, and stirring and dispersing to obtain a component A; and adding polyimide resin and the component A into a solvent for dissolving and dispersing under a room-temperature stirring condition to obtain the uniform and stable honeycomb core strip adhesive. The core strip adhesive has the characteristics of good manufacturability, low curing temperature, high temperature resistance, excellent mechanical properties and the like, and is especially suitable for preparation of ultrathin glass cloth honeycombs.

The invention provides a method of using an ionic liquid solvent system to dissolve fermented mushroom dregs to prepare polymers. The method comprises the following steps: (1) using an ionic liquid solvent system to dissolve fermented mushroom dregs under a heating condition or at a room temperature so as to obtain a solution of dissolved mushroom dregs and an optional undissolved component; and (2) mixing the solution of dissolved mushroom dregs with a regenerating reagent so as to separate polymers from the solution of dissolved mushroom dregs through precipitation and / or solidification to obtain a first polymer; and optionally, washing and drying the undissolved component to obtain a second polymer. The fermented mushroom dregs are processed by an ionic liquid to obtain natural polymers; the polymers can be used to prepare degradable materials or raw materials for other purpose; the mushroom dregs are further processed and converted into valuable resources, a novel method is provided for converting mushroom dregs into valuable resources, and the additional value of mushroom dregs is increased.

The present invention provides a method for removing copper and other impurities in preparing tantalum niobium oxide. A fluoroniobic acid solution or a fluorotantalic acid solution obtained after extraction and separation is used as a raw material to perform a treatment of removing copper and other impurities. The method comprises steps of first removal of copper, removal of crude copper residues,neutralization treatment, slurry liquid filtration, washing, drying, secondary washing and drying, and calcination to produce niobium pentoxide or tantalum pentoxide. The method is simple and effective, extremely low in processing costs and obvious in economic benefits, greatly improves value of tantalum niobium oxide, and has obvious characteristics of energy saving and emission reduction, environmental protection, low pollution, obvious economic benefits, etc.

The invention discloses an ice and snow removing device for an airport runway. The invention relates to the technical field of airport scientific equipment. The device comprises a supporting plate, two supporting legs are fixedly connected to the lower surface of the supporting plate; sliding wheels are arranged at the bottom ends of the two supporting legs, two connecting plates are fixedly connected to the lower surface of the supporting plate, a driving device is arranged between the two connecting plates, a first fixing plate is fixedly connected to the left side face of the supporting plate, a groove is formed in the left side face of the first fixing plate, and a sliding device is fixedly connected to the inner wall of the groove. According to the ice and snow removing device for theairfield runway, through the combined effect of a double-shaft motor, a rotating shaft, a bearing, a roller, a storage box, a material pumping pipe, a material pumping pump, a material conveying pipe, a material storage tank, a spray head and a bucket, accumulated snow is shoveled and transported, the ice and snow melting temperature is reduced, accumulated snow dissolution is accelerated, accumulated snow shoveling and transporting are more convenient, and normal use of the airfield runway is guaranteed.

The invention provides a water-dissolvable rubber material and a preparation method thereof. The water-dissolvable rubber material is mainly prepared from the following components in parts by weight:10-70 parts of dimethylolpropionic acid modified polyurethane (DMPA-PU), 15-30 parts of ethylenediamine propanesulfonic acid modified chitosan (EPS-CS), 5-30 parts of carboxymethyl modified nano silica, 5-40 parts of a compatilizer, 0.3-2 parts of a coupling agent, 0.1-1 part of an antioxidant, 1-5 parts of a softener, 0.3-3 parts of a cross-linking agent, 0.3-3 parts of an accelerant, and 0.5-6 parts of sulphur. According to water-dissolvable rubber, a substrate easy to hydrolyze has certain rubber elasticity and strength by grafting modified polymer elastomer chain segments, and by being matched with a natural material easy to dissolve in water and other components, the water-dissolvable rubber has the excellent water-dissolvable property, also has mechanical properties, can be applied to preparation of customized products in the fields of military industry and petroleum, and has high economic value and social value.

The invention discloses a method of cleaning removal of crystals on the wall of a copper electrolyte electric evaporation nickel removal tank, and belongs to the technical field of copper electrolytepurification electric evaporation. The method comprises the steps that the operation strength of the electric evaporation nickel removal tank and the entering speed of liquid which exists before nickel removal is conducted are reduced, and therefore the temperature of the nickel removal tank is reduced; after the temperature is reduced, tap water is added so that the crystals can be dissolved andremoved or can disappear; and the addition of the liquid which exists before nickel removal is conducted continues, the addition of the tap water stops, the internal temperature of the electric evaporation nickel removal tank is gradually increased, and then the acidity of a solution in the electric evaporation nickel removal tank is adjusted. By the adoption of the method, the technological parameters are adjusted in the production process, namely, the acidity and the temperature of the solution in the production process are reduced, and therefore the solution can have the dissolving capacityand automatically dissolve the crystals, the purpose that the crystals are dissolved to be automatically removed through cleaning is achieved, the operation that after the facility stops running, manual operation removal is conducted is not required, cleaning removal of the crystals is quickly achieved, suspend production treatment is not required, and the frequency of the operation which causesdamage to the facility, such as start and stop of the facility is reduced.

The invention provides a method for preparing high polymers by dissolving fermentation scum in an ionic liquid solvent system, the method comprising the following steps: (1) dissolving the fermentation slag with an ionic liquid solvent system at normal temperature or under heating conditions to obtain the scum Dissolving solution and optionally undissolved components; (2) mixing the slag solution with regeneration reagent, the high polymer precipitates and / or coagulates from the scum solution to obtain the first high polymer; optionally , the undissolved components were washed and dried to obtain the second high polymer. In the method, the fermented bacteria residue is treated with ionic liquid to prepare a natural high polymer. The high polymer can be used to prepare degradable materials or as a raw material for other purposes, which is beneficial to the further processing and resource utilization of the bacteria residue, and is a valuable resource for bacteria. The resource utilization of slag provides a new way, which is of great significance to realize the high-value utilization of fungal slag.

The invention relates to a method for recovering metal elements from molybdenite, belongs to the technical field of metal smelting, and solves the problems that in the prior art, ammonia water or sodium hydroxide is used in the molybdenum recovery process, and a large amount of ammonia-nitrogen wastewater is generated; the calcification method is used for roasting to obtain calcified molybdenum calcine, and the intermediate product molybdenum calcine widely generated in molybdenum ore smelting cannot be utilized in the method; and valuable metals in molybdenite are difficult to recover, and the process is tedious. The method for recovering the metal elements from the molybdenite provided by the invention comprises the following steps: roasting the molybdenite to obtain molybdenum calcine; the molybdenite is leached by using a leaching agent under the condition of an auxiliary leaching agent to obtain a leaching solution; the leaching agent is sulfuric acid, and the leaching aid is one or a combination of phosphoric acid and calcium phosphate; filtering to obtain filtrate and bismuth-enriched filter residues; extracting molybdenum from the filtrate to obtain raffinate and molybdenum-containing extract liquor; and back-extracting the molybdenum by using a back-extracting agent to obtain a back-extracting solution containing the molybdenum. And efficient recycling of multiple metal elements in molybdenite is achieved.

The invention provides nano hydrogen-rich milk and a preparation method thereof. The preparation method comprises the following steps: sequentially carrying out milk collection treatment, standardization treatment and UHT sterilization treatment on raw milk to obtain a raw milk material; and carrying out hydrogen dissolving treatment on the raw milk material, and carrying out sterile canning to obtain the hydrogen-rich milk. The hydrogen-rich milk prepared by the preparation method provided by the invention has a dissolved hydrogen concentration of at least 10 mg / L, and the retention time of 80% hydrogen concentration in the milk in a non-sealed state is at least 5 hours.

In the present invention, the cellulose raw material is soaked in water under the condition of 15-30°C, and then dried to obtain swollen cellulose; then the cellulose is mixed with a polar organic solvent to obtain a cellulose dispersion; finally, the cellulose The dispersion liquid is mixed with the tetra-alkyl quaternary ammonium base at 15-30°C to obtain a cellulose solution, the mixing is carried out under stirring, the stirring speed is 200-400r / min, and the stirring time is 2 ~6h. The preparation method provided by the invention is to directly dissolve cellulose at 15-30°C, which can effectively inhibit the degradation of cellulose caused by high temperature conditions; and the yield of regenerated cellulose in the cellulose solution of the invention is ≥80%, indicating that The method provided by the invention can efficiently dissolve cellulose.

The invention discloses a processing device of traditional Chinese medicine decoction pieces. The processing device comprises a washing conveying line, a soaking delivery line and a cooking output line which are sequentially connected, selected medicinal materials are directly placed in a bearing frame, then are washed sequentially by the washing conveying line, then are soaked and sliced by the soaking delivery line, and then are braised by the cooking output line. According to the processing device, the washing conveying line, the soaking delivery line and the cooking output line are directly arranged, after the medicinal materials are thorough cleaned through the washing conveying line, the medicinal materials are directly conveyed to the soaking delivery line for soaking for a certainperiod of time, and then are braised in the cooking output line, the integrated technology process is achieved, the technology process is simple, the processing efficiency is high, and the problems that in the prior art, in the process of processing the traditional Chinese medicine decoction pieces, the medicinal materials need to be cleaned by a washing machine and then put into a medicine soaking machine for soaking, then slicing is conducted, different processes and different instruments are needed for processing, the process is complex, and the processing efficiency is low are solved.

The invention relates to a method for recovering multiple metal elements from molybdenite based on molybdenum calcine, belongs to the technical field of metal smelting, and solves the problems that ammonia water or sodium hydroxide is used in the molybdenum recovery process in the prior art, and a large amount of ammonia-nitrogen wastewater is generated; and valuable metals in molybdenite are difficult to recover and the process is tedious. The invention provides a method for recovering multiple metal elements from molybdenite based on molybdenum calcine. The method comprises the following steps: roasting the molybdenite to obtain the molybdenum calcine; the molybdenite is leached by using a leaching agent under the condition of an auxiliary leaching agent to obtain a leaching solution; the leaching agent is hydrochloric acid or nitric acid, and the leaching aid is one or a combination of phosphoric acid and calcium phosphate; filtering to obtain filtrate and bismuth-enriched filter residues; extracting molybdenum from the filtrate to obtain raffinate and molybdenum-containing extract liquor; and back-extracting the molybdenum by using a back-extracting agent to obtain a back-extracting solution containing the molybdenum. And efficient recycling of multiple metal elements in molybdenite is achieved.

The invention belongs to the field of mineral waste recovery and particularly discloses a method for separating and extracting valuable metal from iron vanadium titanium chrome multi-metal metallurgical materials. The method includes the following steps that (1) air is blown into feed liquid where the iron vanadium titanium chrome multi-metal metallurgical materials are dispersed, an oxidation reaction is performed, then filter residues A are obtained through solid-liquid separation, and iron-rich filter liquid B and filter residues B are obtained by conducting acid leaching and solid-liquid separation on the filter residues A; and (2) the filter residues B, alkali and oxidizing agents are mixed and then react at the temperature of 300-600 DEG C, reaction products are subjected to water leaching and then solid-liquid separation, and vanadium and chrome-rich filter liquid C and titanium-rich filter residues C are obtained. The method has the advantages that the process is simple cost islow, iron, vanadium, chrome and titanium in the iron vanadium titanium chrome multi-metal metallurgical materials can be comprehensively used, and the method is suitable for industrial application.

The invention discloses a waste cellulose acetate fiber-based regenerated cellulose aerogel and a preparation method thereof, and belongs to the technical field of composite materials. The method comprises the steps: dissolving a cigarette filter tip in the obtained sodium hydroxide / urea aqueous solution to obtain a solution system; freezing and then unfreezing the obtained solution system, continuously adding ethanol after unfreezing, and separating out regenerated cellulose to obtain a mixed solution containing the regenerated cellulose; centrifugally washing the mixed solution containing the regenerated cellulose, and drying to obtain the regenerated cellulose; uniformly dispersing zinc nitrate and 2-methylimidazole in methanol to obtain a mixed solution; and dispersing the obtained regenerated cellulose in the obtained mixed solution to obtain a reaction system, carrying out in-situ generation on the obtained reaction system, loading an MOF material, and carrying out freeze drying to obtain the waste cellulose acetate fiber-based regenerated cellulose aerogel. According to the invention, the problem that the waste cigarette filter cannot be efficiently recycled is solved, and the waste cellulose acetate fiber-based regenerated cellulose aerogel with low density, high specific surface area and high porosity is prepared.

The invention discloses a preparation method of soluble euglena polysaccharide, the method is a method I or a method II, the method I comprises the following steps: (1) alkali dissolution; (2) acid crosslinking; (3) oxidizing and breaking bonds; (4) adjusting the pH value; the second method comprises the following steps: (1) high-temperature key breaking; (2) alkali dissolution; and (3) adjusting the pH value to obtain the soluble euglena polysaccharide. The soluble euglena polysaccharide product prepared by the method disclosed by the invention is wide in application range and pollution-free to the environment, and the prepared soluble beta glucan has a good application prospect in the fields of cosmetics and medicines.

The invention relates to an acid-resistant Pulullan derivative, and a preparation method thereof. The preparation method is used for solving a technical problem that a conventional product is easily dissolved at acidic conditions. The invention also discloses the structural formula and a preparation method of the acid-resistant Pulullan derivative. The preparation method can be widely used for preparation of acid-resistant Pulullan derivatives.