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156results about How to "Efficient removal of impurities" patented technology

Method for manufacturing carboxylic acid

InactiveUS20150368176A1Efficient removal of impurityEffective removal of impurityOrganic compound preparationCarboxylic preparation from carbon monoxide reactionChemistryBoiling point
A process and a production apparatus for producing a high-purity carboxylic acid, from which a metal-containing impurity and / or a carbonyl-group-containing impurity have been highly purified, are provided.The process for producing a carboxylic acid according to the present invention comprises subjecting a carboxylic acid stream containing a metal-containing impurity to a first flash system 1 to give a vaporized fraction, distilling the vaporized fraction by a distillation system 5 to separate into a stream mainly containing a carboxylic acid and a fraction containing a high-volatile impurity (or lower boiling point impurity), and feeding the separated stream mainly containing the carboxylic acid to a second flash system 10 or an adsorption system to form a purified carboxylic acid.
Owner:DAICEL CHEM IND LTD

Method for producing high-performance regenerated polyester colored special-shaped filaments on basis of waste polyester textile products

The invention relates to a method for producing high-performance regenerated polyester colored special-shaped filaments on the basis of waste polyester textile products. By the aid of the method, theproblems of high energy consumption and secondary pollution due to impurity removing, cleaning, drying and the like in existing waste textile product recycling procedures can be solved. The method includes steps of 1), pretreating the waste regenerated polyester textile products; 2), carrying out vacuum drying; 3), carrying out screw melting extrusion, micro-depolymerization, conditioning viscosity increasing, full-color-spectrum color matching and toning, spinning manifold treatment, circular air blowing cooling, bundling oiling and winding doffing on dried polyester textile products to obtain the high-performance regenerated polyester colored special-shaped filaments. The method has the advantages that the problems of high energy consumption and secondary pollution due to impurity removing, cleaning, drying and the like in the waste textile product recycling procedures can be solved by the aid of the method; the monofilament denier of fibers obtained by the aid of the method ranges from 1.0 dtex to 3.0 dtex; the yarn evenness of the fibers is lower than or equal to 2.2%; the breaking strength of the fibers is higher than or equal to 4.0 cN / dtex; the elongation at break ranges from 15% to 25%.
Owner:ZHEJIANG HAILI ENVIRONMENTAL TECH CO LTD

Pharmacologically active novel dauer pheromone compound for controlling aging and stress and method for isolating and characterizing the same

The present invention discloses a method for effectively isolating and purifying a physiological active dauer pheromone compound having the following structural formula I related to aging and stress of C. elegans, and determination of the structure of such material. First, ethanol extract is prepared by completely concentrating a liquid medium with ethanol after culturing C. elegans on a S. basal liquid medium, and then this ethanol fraction is further extracted with ethyl acetate. Then, impurities are removed from ethyl acetate extract by a silica-gel adsorption chromatography and a pheromone extract is isolated and purified by amine column chromatographic procedures using various solvents as eluent. Finally, a pheromone compound having structural formula I is completely isolated and characterized by size-exclusion HPLC.
Owner:KIM JONG MUN

Nanostructured polymer membranes for proton conduction

Polymers having an improved ability to entrain water are characterized, in some embodiments, by unusual humidity-induced phase transitions. The described polymers (e.g., hydrophilically functionalized block copolymers) have a disordered state and one or more ordered states (e.g., a lamellar state, a gyroid state, etc.). In one aspect, the polymers are capable of under-going a disorder-to-order transition while the polymer is exposed to an increasing temperature at a constant relative humidity. In some aspects the polymer includes a plurality of portions, wherein a first portion forms proton-conductive channels within the membrane and wherein the channels have a width of less than about 6 nm. The described polymers are capable of entraining and preserving water at high temperature and low humidity. Surprisingly, in some embodiments, the polymers are capable of entraining greater amounts of water with the increase of temperature. The polymers can be used in Polymer Electrolyte Membranes in fuel cells.
Owner:RGT UNIV OF CALIFORNIA

Method for extracting chlorogenic acid and isochlorogenic acid from gynura procumbens

The invention discloses a method for extracting chlorogenic acid and isochlorogenic acid from gynura procumbens. The method comprises the following steps of drying and smashing fresh gynura procumbensleaves, and obtaining powder; mixing the powder and an ethanol solution, adopting ultrasonic extraction to obtain an extracting solution, and then centrifuging, filtering and concentrating to obtaina turbid dark green concentrated solution; adding a clarifying agent into the concentrated solution for clarifying; adding modified silicon dioxide pellets into the clarified concentrated solution, de-coloring, and enabling the color of the concentrated solution to change into light gray from dark green; adding absolute ethyl alcohol into the light-gray concentrated solution, and eliminating carbohydrates; adsorbing the carbohydrates-eliminated through a middle0high-pressure chromatographic column; after completely adsorbing, desorbing in a classification way, concentrating, and drying to obtain a chlorogenic acid finished product dry powder and isochlorogenic acid mixture. The method provided by the invention is simple in process, convenient to operate, low in cost, free of harmful solvent, high in product purity, better in purification and impurity cleaning effects, energy saving, environmental-friendly, high in production safety, and suitable for industrial production, and has a favorable market prospect.
Owner:江西省蔓三七健康科技有限公司 +2

Split type sewage treatment device

The invention discloses a split type sewage treatment device, which comprises a treatment tank, an additive placement box, a miscellaneous filtering box and a circulating miscellaneous filtering box. The treatment tank is provided with a water inlet pipe, a stirring shaft, a motor, a transmission belt, and a deflector , recovery pipe, ring filter miscellaneous box, filter plate, circulation pump and return pipe; the lower end of the treatment tank is welded with an additive placement box, and the additive placement box is equipped with a submerged water pump, liquid injection pipe, second sealed bearing and injection material hole; the left side of the treatment tank is provided with a miscellaneous filter box, and the miscellaneous filter box is provided with an upper cover, a baffle plate, a connecting water pipe and a drain pipe; the periphery of the stirring shaft is provided with a first sealed bearing, a stirring fan blade, a spiral stirring blade, and a grid Raised and spray pipe. The invention can efficiently stir the water body, pump in the medicament, disperse and inject it into the water for mixing treatment, cooperate with the grid protrusions on the spiral stirring blade and the design of the filter plate in the circulating impurity removal box to remove impurities, and finally obtain clean water body by filtering through the filter cloth.
Owner:陈婷

Yarn reeling and tensioning device

InactiveCN108861856AAdjustable tightnessImprove stretch qualityFilament handlingYarnFixed frame
The invention discloses a yarn reeling and tensioning device which comprises a base. The two ends of the base are provided with two first supporting rods and two second supporting rods correspondingly. The tops of the two first supporting rods are provided with input rolls in a clamping fit mode, and a fixing plate is arranged at the top of one of the second supporting rods. A servo motor is mounted at the top of the fixing plate, and the output end of the servo motor is in transmission connection with one end of a wind-up roll. The other end of the wind-up roll is connected with the top of the other second supporting rod in a clamping fit mode. The bottom of a lead screw is fixedly connected with the top of a tensioning block through a spring, and the two ends of the tensioning block areslidably connected with sliding grooves which are formed in the inner sides of two third supporting rods correspondingly. An impurity removal device is arranged on the side, close to the wind-up roll,of a fixing frame. According to the yarn reeling and tensioning device in the scheme, through the arranged tensioning blocks and lead screw, the tightness degree of yarn is quickly adjusted advantageously, and the stretching quality of the yarn is improved; and through the arranged impurity removal device, impurities can be removed efficiently while the yarn is wound up, the quality of the yarn is improved, and needs for production and using are met.
Owner:湖州吴兴永庆针纺织品有限公司

Impurity-removal automatic feeding device for carding machine

The invention discloses an impurity-removal automatic feeding device for a carding machine. The device includes an outer box, an inner box, supporting legs, a motor, a stirring shaft, a feeding port,a discharging port, a sliding baffle plate, a spring, a heating wire, an air distribution plate, an induced draft fan and a drying box, wherein the bottom of the outer box is provided with multiple supporting legs, the inner box is located inside the outer box, bottom plates of the inner and outer boxes are overlapped, the motor is arranged on the left side of the outer box, a rotating shaft of the motor penetrates through the outer box and is connected with a driving wheel, the stirring shaft is arranged inside the inner box, a left end of the stirring shaft penetrates through the inner box,the stirring shaft is connected with a driven wheel, the driven wheel and a driving wheel are engaged with each other, the inner box is further provided with the feeding port penetrating through the top of the outer box, the discharging port is arranged below the inner box, the sliding baffle plate is arranged at the discharging port, the spring is arranged between a right end of the sliding baffle plate and the outer box, the air distribution plate is further disposed above the inner box inside the outer box, the air distribution plate is provided with the heating wire, and an air inlet pipeis arranged at a top plate of the outer box above the heating wire.
Owner:湖州萌星服饰有限公司

Graphene material based disperse and quick solid-phase extraction method

The invention relates to a graphene material based disperse and quick solid-phase extraction method. The graphene material based disperse and quick solid-phase extraction method comprises the steps of performing pore forming and activation on a graphene material to obtain an activated graphene material, wherein the graphene material is graphene or modified graphene; adding the activated graphene material into a chemical sample to be processed to obtain a mixture, shaking and extracting the mixture, then performing centrifugation to obtain a precipitate and supernate, wherein the supernate contains a target component to be detected. The grid cross-linking degree of the activated graphene material is improved, and the graphene material is easily separated in the centrifugal or filtered operation. By means of the method, a disperse solid-phase extraction technology and the activated graphene material serving as a solid-phase extraction solution can be combined, and a complicated operation in traditional solid-phase extraction is simplified and is simple. Impurities can be selectively absorbed by the activated graphene material, and accordingly impurity removal is effectively performed on chemical samples. Therefore, the method is good in separation effect.
Owner:SINOPHENE NOVEL MATERIALS

Method of efficiently cleaning hydrochloric-acid-process wet-process phosphoric acid

The invention relates to a method of efficiently cleaning hydrochloric-acid-process wet-process phosphoric acid. The method comprises adding one or any of calcium-bearing inorganics, aluminum-bearinginorganics, silicon-bearing inorganics, sulfur-bearing inorganics and fluorine-bearing inorganics into the hydrochloric-acid-process wet-process phosphoric acid, adjusting the molar ratio of Ca, Al, Si, S and F in the hydrochloric-acid-process wet-process phosphoric acid to (20-50):(0.8-1.2):(1-1.20):(0.90-1.20):(12-15), and allowing to react so that impurity elements, Ca, Al, Si, S and F, in thehydrochloric-acid-process wet-process phosphoric acid are precipitated out in the form of Ca4AlSiSO4F13 12H2O so that purifying is achieved. Compared with the prior art, the method has the advantagesthat the five impurity elements in the wet-process phosphoric acid are removed at a time by changing the composition of the wet-process phosphoric acid, the main impurity elements in the wet-process phosphoric acid are precipitated out in the form of the compound Ca4AlSiSO4F13 12H2O, and therefore, purification of the wet-process phosphoric acid is achieved.
Owner:EAST CHINA UNIV OF SCI & TECH

Method and apparatus for bubble glow discharge plasma treatment of fluids

A method for changing the chemical properties of fluid media is carried out in a coaxial plasma reactor. The plasma reaction in the reactor produces reactive species, such as electrons, ions and free radicals that promote better flammability of the combustible liquids, helps isolates unwanted pollutants such as sulfur and nitrogen by forming heavier compounds and also helps inactivate any microorganisms in other fluids such as water. In various embodiments, the plasma reaction also sputters off minute particles from the interior surfaces of plasma reactor. Such nanoparticles helps lower the combustion temperature of the flammable fluids and disinfect other fluids such as water. In another embodiment, breaking the bubbles into smaller size using an ultrasound generator increases the efficiency of the plasma reactor. In another embodiment, the bubbles are broken into smaller size and mixed with the fluid by agitating the liquid using a mechanical stirrer. In another embodiment, the ionization of the gases within the fluid is promoted by DC, pulsed DC, RF power applied to two electrodes. In another embodiment, an inductively coupled coil placed either outside or inside the chamber promotes the plasma generation within the bubbles. Various applications of this device include pre-treatment of the fuel before injecting it into an internal combustion engine to decrease the exhaust pollution and also decrease the combustion temperature, disinfection of drinking water, sewage treatment etc.
Owner:SUBRAMANIAN KRUPAKAR M

Method for aluminum chloride refining and calcium removal

The invention discloses a method for aluminum chloride refining and calcium removal. The method is mainly used for removing calcium ions in pickle liquor (pH =1 to 2) obtained after the sufficient reaction of high-aluminum fly ash and hydrochloric acid. According to the method, firstly, sulphate is used as a precipitant for removing impurities; the aluminum liquid subjected to impurity removal is continuously subjected to impurity removal by chelate cation exchange resin when being hot; finally, an effective calcium removal aluminum chloride solution is obtained. Compared with the prior art, the method has the advantages that the technical process is simple; the raw material addition is single; the consumption is low; other impurities cannot be introduced; the cost is low; the calcium removal effect is obvious; the method belongs to a fly ash refined integral utilization and calcium removal industrialization method with good prospects.
Owner:SHAANXI NORMAL UNIV

Application of cabbage type rape floral leaf mutant

The invention relates to an application of a cabbage type rape floral leaf mutant. The cabbage type rape floral leaf mutant is applied by the following steps: hybridizing a sterile plant in a cabbage type rape recessive genic male sterile homozygous two-type line 20118AB serving as a female parent with a cabbage type rape floral leaf mutant serving as a male parent, bagging and performing inbreeding to obtain a floral leaf sterile plant; hybridizing the floral leaf sterile plant with a fertile plant in 20118AB to breed a new homozygous two-type line, namely, a floral leaf recessive genic male sterile homozygous two-type line; hybridizing the floral leaf sterile plant with a temporary maintaining line to obtain a new temporary maintaining line, namely, a floral leaf temporary maintaining line; and hybridizing the cabbage type rape floral leaf recessive genic male sterile homozygous two-type line with the floral leaf temporary maintaining line to produce a cabbage type rape floral leaf complete sterile line. Purity identification and impurity removal at the seedling stage of the complete sterile line are realized by using the character of a floral leaf, the purity of the complete sterile line is increased, the genic male sterile seed production procedure is simplified, and the labor amount of field hybrid seed production is reduced.
Owner:SHANGHAI ACAD OF AGRI SCI +1

Method for detecting amine harmful substances in food

The invention discloses a method for detecting amine harmful substances in food. The detection method comprises the following steps: (1) adding a dispersed adsorbent into a sample, uniformly performing mixing, adding an acrylamide isotope internal standard and a heterocyclic amine compound isotope internal standard, carrying out ultrasonic extraction and centrifugal separation by adopting an acetonitrile aqueous solution, taking supernate, blowing nitrogen to 0.5-1mL, and fixing the volume by using an ammonium acetate solution containing acetic acid to obtain a purified solution; (2), adding ferroferric oxide nanoparticles into the purified liquid, carrying out vortex oscillation decolorization and centrifugation, and taking supernatant as to-be-detected liquid; and (3), detecting the amine harmful substances in the to-be-detected liquid by using an ultra-high performance liquid chromatography-tandem mass spectrometry method. The method has the advantages of excellent purification effect, high sensitivity and strong specificity, and is suitable for simultaneous determination of a plurality of amine harmful substances in food.
Owner:GUANGDONG UNIV OF PETROCHEMICAL TECH +1

Circulating cleaning device of agricultural and sideline products

The invention discloses a circulating cleaning device of agricultural and sideline products. The device comprises a main body, a feed port, a base and a variable frequency motor. The feed port is formed above the main body; the base is arranged below the main body; the variable frequency motor is arranged between the main body and the base; the output part of the variable frequency motor is connected with a stirring shaft; the stirring shaft extends into the main body; stirring wheels are symmetrically arranged on the surface of the stirring shaft; brush bristles are symmetrically arranged on the surfaces of the stirring shaft and the stirring wheels; a filter screen is arranged in the main body, and is positioned below the stirring wheels; the internal of the main body is a water collecting chamber below the filter screen; an anti-cracking layer is arranged on the inner wall of the main body; an air pump is arranged on the outer wall of the main body; a water tank is arranged outside the main body; the lower side of the water tank is connected with the water collecting chamber in the main body through a guide pipe; a filter chamber is arranged on the surface of the guide pipe connected between the water tank and the water collecting chamber; and a buffer device is arranged between the main body and the base. The device has such advantages as reasonable structure design, long service life and good cleaning effect.
Owner:ANHUI XINQIAO IND & TRADE

Oil-immersed transformer oiling device

The invention provides an oil-immersed transformer oiling device, belonging to the technical field of oiling devices. The oil-immersed transformer oiling device aims to solve the technical problems of degassing, impurity removal and oiling in the insulating oil for transformers. The oil-immersed transformer oiling device comprises an oil drum, an oil level detection mechanism, an oil pump, an oil filter, an oiling tube mechanism and a control system, wherein the oil level detection mechanism is installed in the oil drum; the upper end of the oil drum is provided with an alarm lamp; one end of the oil pump communicates with the oil drum, and the other end communicates with the oil filter; the oil filter comprises a heating mechanism, a degassing mechanism, an impurity removal mechanism and a power mechanism; the oiling tube mechanism comprises an oiling tube and an exhaust tube; and the outer end of the oiling tube is fixedly provided with an adjustable flange. The oil-immersed transformer oiling device effectively performs impurity removal, degassing treatment and oiling before oiling of the oil-immersed transformer insulating oil, prevents the insulating property of the insulating oil for transformers from degradation due to the influence of gases and impurities, and obviously enhances the safety performance of the insulating oil for transformers.
Owner:国网山东省电力公司茌平县供电公司 +1

Impurity removing device special for separating calotropis gigantean fiber capsule seeds

The invention discloses an impurity removing device special for separating calotropis gigantean fiber capsule seeds. The impurity removing device comprises a feeding device, a transmission system and a cotton conveying pipe, and is characterized in that the feeding device consists of a cotton feeding plate, a cotton feeding roller, a dust rod and four-wing beaters, and is mounted at the upper part of the front end of a rack; the transmission system is fixed at the lower part of the front end of the rack; a cotton conveying pipeline is arranged at the middle part of the rack; two adjusting plates in an upper and lower manner and a negative pressure air pipe are arranged inside the pipeline; a capsule seed dust chamber is arranged at the lower part of the pipeline; and a cotton storage box and a negative pressure fan are arranged at the rear part of the rack. According to the impurity removing device, elastic metal sheets are adopted as the beaters; a plurality of beaters are adopted and operated in low speed, so that the fiber is less damaged, the whole set of device structure is small in physical beating effect, impurities are removed with the combination of airflow, and the unique characteristics of the fibers are better maintained; compared with manual sorting, the separation effect is increased by 26 times, so that the industrial batch production of the calotropis gigantean fiber is facilitated; and the dirt percentage is reduced to 3%, so that the impurities in the fibers is effectively removed.
Owner:湖南云锦集团股份有限公司

Polishing and impurity removal mechanism for BGA solder balls

The invention discloses a polishing and impurity removal mechanism for BGA solder balls. The polishing and impurity removal mechanism comprises a rack. The rack comprises a base and a beam located above the base. A carrier plate is movably arranged on the base and provided with a first polishing mechanism. A drive mechanism is arranged on the portion, on one side of the first polishing mechanism, of the carrier plate. A second polishing mechanism is arranged above the first polishing mechanism. An impurity removal mechanism is connected to the second polishing mechanism and mounted on a lifting air cylinder. The lifting air cylinder is mounted on the beam. The impurity removal mechanism comprises dust suction pipes fixedly connected to the top ends of second polishing pieces. The dust suction pipes are connected with a suction fan. By means of the polishing and impurity removal mechanism, the surface quality problems of the vaporific or wrinkled surfaces of the solder balls and the like can be solved effectively, the surface roughness of the solder balls is lowered effectively, and chippings and impurities generated in the polishing process can be removed effectively.
Owner:徐州宏巨机械制造有限公司

Using method of multilayered micro-fluidic chip for detection

The invention provides a using method of a multilayered micro-fluidic chip for detection. The using method of the multilayered micro-fluidic chip for detection is characterized by comprising the following steps: first step, selecting the specification of the chip; second step, preparing the chip; third step, assembling and closing; fourth step, adding samples and detecting; and fifth step, disassembling and cleaning. The using method of the multilayered micro-fluidic chip for detection has the beneficial effects that the specifications of chips are numerous, requirements for simultaneous detection of multiple heavy metals can be met, the chip is assembled conveniently, and an experimental method is simple; and the chip is disassembled easily, a filter device and the like can be convenientto clean and change, and field detection is facilitated.
Owner:CHONGQING UNIVERSITY OF SCIENCE AND TECHNOLOGY

Crushing device for wine-brewing raw materials

The invention discloses a crushing device for wire-brewing raw materials. The crushing device comprises a plurality of hoppers; a winnowing pipeline is arranged under each hopper; a bearing block is arranged in each branch pipe pipeline; a material inserting plate is arranged on each winnowing pipeline in an inserted mode; the end, inserted into the corresponding winnowing pipeline, of each material inserting plate is propped on the corresponding bearing block; an impurity outlet pipeline is further arranged on each winnowing pipeline; a branch pipeline is further arranged on each impurity outlet pipeline, and all the branch pipelines are connected to an air outlet main pipeline; a primary crushing box is arranged below each winnowing pipeline; a discharging pipeline is further arranged under each primary crushing box, and all the discharging pipelines are connected to a crushing box body; a material groove for intensively discharging the materials is further formed in the crushing boxbody; a plurality of crushing rollers are arranged below the material groove; and a discharge port is formed in the lower portion of the crushing box body. The crushing device has the advantages thatthe materials can be effectively separated and crushed, the crushing time can be selected according to different materials, and therefore the processing speed and the processing quality of products can be improved.
Owner:句容市华东综合酿造厂

Method for comprehensive utilization of coal gangue

The invention relates to a method for comprehensive utilization of coal gangue. The method comprises the following steps: coal gangue crushing, pyrolyzing and activating, acid dissolving, residue filtering for supplying a carbon source, compressing and molding, reacting at a high temperature, crushing to obtain silicon carbide. According to the invention, the method for preparing polyaluminum chloride and photovoltaic cutting edge material-carbonized silicon powder by using the coal gangue is an important approach for effective and comprehensive utilization of the coal gangue.
Owner:HENAN UNIV OF URBAN CONSTR

Method for producing saturated hydrocarbon compound

A method for treating a saturated hydrocarbon compound suitable as a liquid for the immersion exposure method excelling in transmission in the deep ultraviolet region using sulfuric acid in an amount smaller than in a conventional method is provided. The above sulfuric acid washing treatment is the method for producing saturated hydrocarbon compound intended to reduce the absorbance, wherein the second sulfuric acid washing treatment step is conducted after the first sulfuric acid washing treatment step at a temperature 10° C. or more lower than the temperature of the first sulfuric acid washing treatment step. The absorbance of light with a wavelength of 193 nm of the saturated hydrocarbon compound to be treated in the above second sulfuric acid washing treatment step is 0.10 or less per 1 cm of a liquid optical path length, and the above saturated hydrocarbon compound is an alicyclic saturated hydrocarbon compound.
Owner:JSR CORPORATIOON

Extraction method for rose essential oil

The invention discloses an extraction method for rose essential oil. The extraction method for the rose essential oil includes the following steps: preparation of raw materials: namely a step of taking fresh rose petals, and drying the fresh rose petals for 3 h-4 h in a baking oven with the temperature of 105 DEG C-115 DEG C; extraction: namely a step of adding an extraction agent to the dried rose petals for performing microwave extraction, and collecting an extract liquor after centrifugation; and separation: namely a step of performing purification and separation on the extract liquor to obtain the rose essential oil. The extraction method for preparing the rose essential oil of the invention simply utilizes the rose petals as the raw materials, a source is single, and at the same time,a combined effect of atmospheric distillation and oil-water separation are utilized to prepare the rose essential oil, so that the problem of poor purity of current rose essential oil can be solved;and due to the particularity of a process, the effective utilization rate of rose petals can be improved, and the yield of the rose essential oil is increased to meet market demands.
Owner:王少平

Preparation method of high-purity dysprosium oxide

The invention discloses a preparation method of high-purity dysprosium oxide. The preparation method is characterized in that dysprosium oxide raw material is added into deionized water, a refining agent is added, the raw materials are stirred at room temperature; the mixture is transferred into a container and subjected to ultrasonic irradiation oscillation; the mixture is transferred into a kettle with a stirring device, stirred for 3-5 hours at room temperature and then subjected to reduced pressure filtration; the obtained solid is put into deionized water and washed to be neutral in pH and subjected to reduced pressure suction filtration and vacuum drying at 150-180 DEG C to obtain a dysprosium oxide pure product with the purity of 99.99% or more. According to the method disclosed by the invention, the high-purity dysprosium oxide pure product with the purity of 99.99% or more can be directly prepared by deeply purifying dysprosium oxide raw material with the purity of 99.5%, the operation steps are simple and the method is convenient to operate, the equipment investment is low, and a new way is provided for preparing the high-purity dysprosium oxide product.
Owner:SHANGHAI JINGCHUN BIOCHEM TECH CO LTD

Method for extracting refined ursolic acid from loquat leaves

The invention discloses a method for extracting a refined ursolic acid from loquat leaves. The method comprises the following steps: evenly mixing crushed and sieved loquat leaves with any one of ethanol, Span-65 and Span-85 and carrying out ultrasonic extraction, performing microfiltration and ultrafiltration on the extract, and then concentrating and drying to obtain crude ursolic acid; crushing, eluting, decoloring, filtering, concentrating and precipitating the crude ursolic acid, and carrying out suction filtration to obtain white precipitate; next, adding ethanol, heating until boiling, and chilling until complete crystallization; further concentrating the mother liquor and operating by use of the same method to obtain secondary crystals, blending the crystals of the two times, and drying in vacuum to obtain the refined ursolic acid. The method has the advantages that maximum separation and purification effect can be achieved, impurities are removed effectively, the purity of the ursolic acid is increased and the extraction rate is above 25%; the method is simplified in production step, reduced in production cost, reasonable in technology, safe to operate, environmental friendly, and advantageous for industrial application.
Owner:CHANGSHA LUYUAN BIO TECH

Method for efficiently removing phosphorus, arsenic and silicon impurities, extracting tungsten and recovering alkali from crude sodium tungstate solution

The invention discloses a method for efficiently removing phosphorus, arsenic and silicon impurities, extracting tungsten and recovering alkali from a crude sodium tungstate solution. The method includes the following steps of mixing calcium tungstate with the crude sodium tungstate solution for reaction, conducting filtering to obtain a sodium tungstate solution, introducing carbon dioxide into the sodium tungstate solution until the pH of the solution is 3.0-6.5 to obtain a sodium polytungstate solution, conducting adsorbing through weak-base anion-exchange resin or extracting through a weakly alkaline extractant on tungsten in the sodium polytungstate solution to obtain a raffinate or exchanged liquid as a sodium bicarbonate solution, heating the obtained sodium bicarbonate solution toobtain a sodium carbonate solution and carbon dioxide, returning the sodium carbonate solution for decomposing tungsten ore to prepare the crude sodium tungstate solution and returning carbon dioxidefor decomposing sodium tungstate solution. By means of the method, the phosphorus, arsenic and silicon impurities in the crude sodium tungstate solution can be effectively removed, the tungsten can beeffectively extracted, and the alkali can be effectively recycled.
Owner:CENT SOUTH UNIV

Device and method for zero emission preparation of aqueous oxidizer salt solution

The invention relates to a device and a method for the zero emission preparation of an aqueous oxidizer salt solution. The device of the invention concretely comprises a preparation tank, a coarse filter tank, a fine filter tank, a water tank, a wastewater concentration precipitation tank, a recovered water filter and a recovered water tank, recovered water which is filtered by the recovered water filter is injected to the recovered water tank by the lower space under the filter screen in the recovered water filter through a pipeline, and the recovered water in the recovered water tank is injected to the preparation tank through a pipeline. The invention also relates to the method for preparing the aqueous oxidizer salt solution through using the device. Advantages of the device and the method of the invention are shown in the specification.
Owner:QINGDAO TARGET MINING SERVICES

Rainwater collection type seawater desalination treatment system for ships

The invention discloses a rainwater collection type seawater desalination treatment system for ships, and relates to the technical field of auxiliary equipment for ships. The rainwater collection typeseawater desalination treatment system comprises a box body, wherein a push plate is fixedly connected to the left side of the box body; a first water pump is fixedly connected to the top of the pushplate, and a vortex dust removal device is arranged at the top of the output end of the first water pump; an impurity removal box is fixedly connected to the left side of the inner wall of the box body, and a first guide pipe is fixedly connected to the center of the bottom of the impurity removal box; and a rainwater collection pipe is fixedly connected to the left side of the top of the box body. According to the rainwater collection type seawater desalination treatment system for the ships, the safety of water purification is improved, the purification quality is high, purified water can be directly drunk and stored, continuously working during navigation is realized, drinking water is ensured while the fresh water storage capacity of the ships is reduced, so that the transportation efficiency of the ships is improved, solar energy is fully utilized, being more environment protection is realized, rainwater resources are fully utilized, rainwater collection efficiency is improved, and resources are saved.
Owner:QINGDAO HUANGHAI UNIV

Plastic product recovery device

The invention relates to the field of toothpaste tube recovery, particularly relates to a plastic product recovery device, and aims to provide the plastic product recovery device. The plastic productrecovery device comprises bottom feet and a lifting type extrusion mechanism, and a pollution discharge mechanism is arranged on the left side of the top end of a cleaning cabin. According to the device, when the device is used, the lifting type extrusion mechanism extrudes out toothpaste left in a toothpaste tube, the lifting type extrusion mechanism moves downwards, the toothpaste tube is cut into two halves through an arc-shaped blade, the toothpaste tube and a detergent solution can be stirred through a primary impurity removing mechanism, the left toothpaste is dissolved and removed, thepollution discharge mechanism discharges sewage generated by impurity removal to provide power for a crushing mechanism, and the crushing mechanism crushes the cut toothpaste tube into fragments, so that the effects of lifting type toothpaste extrusion, lifting type toothpaste tube cutting, efficient impurity removal, thorough crushing and efficient cleaning are achieved.
Owner:范军

Flow production line for raisin

The invention discloses a flow production line for raisin, comprising a feeding conveyer belt. The upper end of the feeding conveyer belt extends to the upper part of a cleaning water pool. A cleaning conveyer belt is arranged in the cleaning water pool, and a circulation filtration purified water tank is arranged below the water pool. A high-pressure water pump is arranged at the lower part of the water tank, a water outlet pipe opening of the high-pressure water pump is located above the cleaning conveyer belt, and a discharging end of the cleaning conveyer belt is located above an impurity separating hopper. The upper end of the impurity separating hopper is connected with the water tank through a flushing pipe. An impurity separating sieve is arranged in the impurity separating hopper and comprises a left plate body and a right plate body, and baffles are arranged between the bottom surfaces of the two plate bodies with horizontal spacing. The discharging end of the impurity separating hopper is located above an electric vibrating screen, and the vibrating screen is horizontally provided with a high-pressure nozzle communicated with the high-pressure water pump. The discharging end of the vibrating screen extends to the upper part of a spiral dehydration and separation barrel. An air-drying conveyer belt and a vibration and oil-applying conveyer belt are arranged in sequence at the back of the spiral dehydration and separation barrel.
Owner:吐鲁番市迈德果业有限责任公司
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