489results about "Solvent extraction" patented technology

The utility model discloses plant extract extraction equipment, which belongs to the technical field of plant extraction and comprises an extraction barrel, a supporting plate is fixedly mounted on the upper surface of the extraction barrel, a fixing plate is fixedly mounted on the upper surface of the supporting plate, and a pressing component and a lifting component are arranged on the upper surface of the fixing plate; according to the device, the pressing assembly is arranged, the other toothed chain wheel drives the reciprocating lead screw to rotate under the action of the toothed chain, at the moment, the lower sliding sleeve can drive the pressing plate to move up and down in the filter barrel under the limitation of the air cylinder under the action of the thread, plants in the filter barrel can be extruded when the pressing plate moves downwards, and when the pressing plate moves upwards, the plants can be extruded by the reciprocating lead screw. When the plant is not extruded, the solvent can be absorbed, so that the plant is filled with the solvent, the plant is pressed while rotating in the plant soaking process, the full contact between the plant and the solvent is further ensured, the extraction quality of plant extraction is improved, the solvent waste can be avoided by pressing during discharging, and the purpose of saving resources is achieved.

The utility model relates to a sealing structure of supercritical extraction equipment, which comprises a reaction kettle, the outer end of the reaction kettle is sleeved with an end cover, the bottom end of the end cover is fixedly connected with a fixing ring, the outer end of the fixing ring is provided with a sealing groove, the inner wall of the sealing groove is rotatably connected with a sealing ring, and the bottom end of the fixing ring is fixedly connected with a movable sealing assembly. According to the structure, the elastic corrugated sealing ring, the sealing ring and the movable sealing assembly are adopted to form multiple sealing, the movable sealing assembly is matched with the pressurizing ring through the first annular cavity and the second annular cavity, the sealing force is automatically adjusted through system pressure, heat-absorbing expansion liquid in the liquid storage ring can automatically compensate for a heat-expansion and cold-contraction gap, and meanwhile the sealing effect is improved. The piezoelectric ceramic stack is combined with the stirring rod, ultrasonic-mechanical coupling extraction is achieved, mass transfer efficiency is improved, crystals on a sealing component can be removed through the generated cavitation effect, and the ultrasonic-mechanical coupling extraction device has the advantages of being reliable in sealing, high in self-adaptability and the like.

According to the present invention there is provided processes for the recovery of lithium from end-of-life lithium-ion batteries and battery matter. A representative process resides in a process for separating lithium from lithium ion batteries before undertaking hydrometallurgical or pyrometallurgical processing, the process comprising: providing a black mass (BM) or shredded battery material (SBM) that includes cation and anion components; commixing the BM or SBM with an admixture that includes water and supercritical carbon dioxide; and separating an aqueous leachate and a lithium-leached BM or SBM, where the aqueous leachate includes a lithium carbonate and / or bicarbonate.

There is disclosed a method for treatment of an aqueous lithium salt-containing solution in a direct lithium extraction process comprising lithium-selective media, wherein the aqueous lithium salt-containing solution comprises one or more foulants, the method comprising the steps of adjusting the oxidative-reductive potential and / or pH of the aqueous lithium salt-containing solution to render the one or more foulants inert to the lithium-selective media; and removing the one or more inert foulants from the aqueous lithium salt-containing solution prior to addition of the aqueous lithium salt-containing solution to the lithium-selective media in a direct lithium extraction process.

To provide a marigold extract, and application thereof to preparation of an anti-prostatic cancer medicine.SOLUTION: The present invention relates to a medical technical field, particularly application of marigold extract and preparation thereof into an anti-prostatic cancer medicine, where the extract uses ethyl acetate as an extraction agent, is obtained by extracting active ingredients of roots or stems of marigold, marigold extract suppresses survival and proliferation of a tumor cell by inducing pyrokinesis of a cell, can suppress progress of a tumor, and can be used for preventing prostatic cancer and / or preparing a therapeutic drug.SELECTED DRAWING: Figure 1

The invention relates to a process for purifying maritime pine bark by selective sieving and grinding, as well as the extracts obtained from this purified bark. The purified bark of the invention is obtained by a three-step process consisting of pre-sieving the raw bark, followed by selective grinding of the pre-sieved bark with a non-shearing grinder, followed by sieving of the selectively ground raw bark. The maritime pine bark extracts obtained from this purified bark can be obtained by extraction with water or with a mixture of water and ethanol. Extracts obtained by water extraction have a procyanidin content of between 65% and 75%, while extracts obtained with a mixture of water and ethanol have a procyanidin content greater than or equal to 70%.Extracts of maritime pine bark obtained from the purified bark of the invention can be used as ingredients for the formulation of food supplements, functional foods or cosmetic products.

Methods for processing metal components from the nuclear industry are described. In some embodiments, a method includes processing a component having a surface contaminated with radionuclides by dissolving at least a portion of the surface with an acid solution to produce a waste solution including the radionuclides, and separating the radionuclides from the waste solution. In some embodiments, a method includes processing a component including a target radionuclide by immersing at least a portion of the component in an electrolyte bath, applying an electric current to cause electrodissolution, and electroplating the target radionuclide from the solution onto a cathode. In some embodiments, a method includes processing a metal composite component by dissolving it to produce a solution including dissolved metal and particulate material, and separating the particulate material.

The present disclosure relates to a method for preparing a solid form of the lithium salt of bis(fluorosulfonyl)imide (LiFSI), wherein the solid form of LiFSI salt is extracted from a solution comprising at least one solvent by supercritical anti-solvent extraction. The present invention also relates to the solid form of LiFSI obtained therefrom, as well as the use of such LiFSI in a battery electrolyte.

A method of separating and purifying a mixed stream of contaminated reclaimed polyethylene and contaminated reclaimed polypropylene is provided. The method comprises the steps of extraction, dissolution, settling, purification, and solvent separation to produce separate streams of purified recycled polyethylene and purified recycled polypropylene. Both separate streams are produced in the same production plant operating in swing mode, and have virgin-like optical properties.

The present invention relates to the technical field of solid waste testing. Disclosed is an apparatus for preparing a solid waste leaching solution. The apparatus for preparing a solid waste leaching solution comprises a base, a pretreatment mechanism, sample bottles, a cabinet, an overturn oscillation mechanism and a suction filtration device, wherein the pretreatment mechanism is arranged above the base and is used for weighing, crushing and sieving solid waste; the cabinet is arranged at the top of the base; the sample bottles and the overturn oscillation mechanism are both arranged on the inner side of the cabinet; and the sample bottles are used for containing crushed solid waste mixed with a leaching agent. By means of the apparatus for preparing a solid waste leaching solution, solid waste to be crushed is weighed synchronously while being fed into a treatment cylinder, without the need for transferring the solid waste after a crushing operation, thereby simplifying operation steps. Compared with some apparatuses that use mechanical arms for transferring, the present invention effectively reduces the manufacturing and usage costs, shortens the operation time, and improves the operation efficiency.

It is provided an environmentally friendly process for recycling metals and nonmetallic components from printed circuit boards (PCBs), without using treatments considered damaging to the environment and minimizing emission of greenhouse gases comprising the steps of shredding the PCBs, micronizing the shredded PCBs producing a micronized powder, removing plastic and epoxy from the micronized powder, leaching, precipitating and recuperating the Al, Fe, Zn, Ni, Cr, Cu, Au, Ag, and Pd from the micronized powder, producing a filtrate from which the Cu is recovered. The solid product of the process is a concentrate of precious metals.

Accordingly, in one aspect of the invention there is provided a method of manufacturing an ATP enriched plant based extract comprising:gathering a collection of plant material; saturating the collection of plant material in a solvent to generate a liquid extract; filtering the liquid extract to remove solid plant matter therefrom to form a filtered liquid extract; exposing the filtered liquid extract to UV light; reducing the filtered liquid extract to form a liquid concentrate; and cleaning the liquid concentrate to create an ATP enriched oil extract

Provided are a metal extractant for extracting metal ions present in a water phase to an oil phase, and a separation recovery method of metal ions. In the metal extractant, nitrogen atoms positioned at both terminals of a molecular chain forming the metal extractant do not form a carbamoyl bond and include an unsubstituted hydrocarbon group and a group including and any coordinating functional group in a group G1 of coordinating functional groups below as a coordinating functional group (a) for metal ions to be extracted, or include an unsubstituted hydrocarbon group. The separation recovery method includes mixing an oil phase including the metal extractant and a water phase including plural kinds of metal ions.

A process for removing lactic acid from an aqueous lactic acid-containing magnesium chloride solution, the weight ratio of magnesium chloride to lactic acid in the aqueous lactic acid-containing magnesium chloride solution being at least 1:1, the process including the steps of subjecting the aqueous lactic acid-containing magnesium chloride solution to an evaporation step, resulting in the formation of a slurry of MgCl2·MgL2·4H2O in an aqueous magnesium chloride solution, then subjecting the slurry to a solid-liquid separation step, to separate the solid MgCl2·MgL2·4H2O from the aqueous magnesium chloride solution, resulting in the removal of lactic acid from the aqueous lactic acid-containing magnesium chloride solution in the form of MgCl2·MgL2·4H2O. The process makes it possible to efficiently remove lactic acid from aqueous lactic acid-containing magnesium chloride solutions, resulting in magnesium chloride solutions with a low lactic acid content which can be further processed as desired.

Copper concentrate, such as chalcopyrite, is contacted with an aqueous solution containing an acid, and a reducing agent, such as vanadium(II) ions, chromium(II) ions, or zinc tungstoate (HZnW 12 O 40 ). The aqueous solution reduces the copper in the copper concentrate, which can then be dissolved in solution for recovery therefrom or precipitated from solution as copper compounds or elemental copper for recovery as a solid phase product. The solid phase product can then be isolated, dissolved, and further electrowinning to recover the copper product from the copper concentrate. The oxidized reducing agent can be recovered in an electrochemical device with a ferrous reactant. A hydrometallurgical route for converting copper concentrate to copper is potentially cheaper and less polluting than current high temperature smelting processes, and is an advantageous response to environmental and economic pressures for increased copper production.

Method for producing electronic grade nickel sulfate from nickel powder, crystallization apparatus, and control thereof The present invention provides a method for producing nickel sulfate, and nickel sulfate produced thereby. The process includes acid leaching, copper removal, acid adjustment, concentration, cooling crystallization, drying and sieving, and secondary leaching. Oxidation In the calcination furnace, the temperature is 400 to 700°C, and 1 kg of compressed air is used for each kilogram of nickel powder. ~5m 3 The reaction time is 1.0 to 2.5 hours, and the temperature during acid immersion is controlled to 45 to 70°C. Then, add dilute sulfuric acid to control the pH to 0.5-1.5 and react for 1-3 hours. The copper removal is to replace the copper with nickel powder, and the acid conditioning is to use nickel hydroxide or The pH is adjusted to 2.5-4.5 using nickel carbonate, and the filtrate is concentrated by The cooling crystallization method is to obtain nickel sulfate crystals and return the mother liquor to the concentrate. Drying and sieving is to add the undersieved material to the crystallizer as seed crystals, and secondary leaching is to Dilute sulfuric acid is added to the leaching slag, and it is reacted with nickel sulfate or hydrogen peroxide until nickel is less than 0.1%. If the first stage is full, the second leaching is continued. The crystallizer is a crystallizer that is connected in series with a second-stage crystallizer and a third-stage crystallizer. A crystallization frame, an oscillator provided under the crystallization frame, and an oscillator provided at the exit end of the crystallization frame. The crystallization frame is a rectangular parallelepiped. The bottom of the ribs are evenly spaced, with a cross section of a circular arc. The distance between two adjacent ribs is S is 1 / 25 to 1 / 15 of the width of the crystallization frame, and either the width b or the height h of the rib The width of the crystallization frame is 1 / 100 to 1 / 150 of the width of the crystallization frame. It does not add any new impurity ions, and does not add any oxidizing agent. The nickel sulfate crystal particles produced are uniform and are free of the static generation. This avoids caking of very large particles, irregularly shaped particles and crystals.

The present invention relates to a method for recovering elastic polyurethane from a composition comprising elastic polyurethane foam, the method comprising the steps of providing a composition comprising polyurethane foam, heating the composition comprising polyurethane foam to a temperature in the range of 140°C to 220°C, and contacting the composition comprising polyurethane foam with a solvent mixture (SM) comprising at least one alcohol and at least one compound (A1) selected from the group consisting of cyclic amides, at a temperature below the boiling point of the alcohol, to obtain a solution (S1) rich in dissolved polyurethane. The present invention also relates to the polyurethane obtained or obtainable by said method, as well as to the use of the polyurethane according to the invention for preparing a molded article.

The present invention addresses the problem of efficiently recovering carboxylic acid from a coagulation liquid when producing a molded body by a method including a step of eluting carboxylic acid from a protein solution containing protein and carboxylic acid into the coagulation liquid. [Solution] A method for producing a protein-containing molded article according to the present invention comprises a step for introducing a protein solution containing a carboxylic acid into a coagulation liquid and a step for recovering the carboxylic acid from the coagulation liquid, the step for recovering the carboxylic acid from the coagulation liquid comprising: a first step for introducing a protein solution containing the carboxylic acid into the coagulation liquid, and a second step for recovering the carboxylic acid from the coagulation liquid; dissolving the carboxylic acid in the coagulation liquid into a preparative extractant by liquid-liquid contact of the coagulation liquid with the preparative extractant containing an extraction solvent and a diluent, thereby forming a preparative extractant containing the carboxylic acid and water; a second step of distilling and removing the diluent and water from the preparative extractant to form a diluent layer and a water layer, while recovering the remaining preparative extractant containing carboxylic acid; and a third step of obtaining a purified carboxylic acid by a distillation operation including a step of distilling and removing the carboxylic acid from the preparation of the extractant.

A method for supplying deaerated water to a chemical plant, wherein the chemical plant includes a distillation column for separating a reaction effluent including water and a product. The method includes charging aerated water (water having an oxygen content greater than 50 ppbw, such as greater than 1 ppmw) to the distillation column. The aerated water in the distillation column can then be distilled to produce an oxygen-containing overhead and a bottoms fraction including deaerated water. The deaerated water in the bottoms fraction can be transported to and utilized in upstream or downstream unit operations. The reaction effluent is fed to the distillation column, converting the distillation column from an operation that separates oxygen from water to an operation that separates the product from water.

The present invention relates to a method suitable for recovering textile waste comprising a polyester yarn containing a dye, the method comprising: a first step in which the polyester yarn is treated with a solvent to extract a portion of the dye from the polyester yarn; a second step in which the solvent-treated polyester yarn is subjected to a process in which the polyester is depolymerized into an oligoester consisting on average of between 3 and 30 monomeric units wherein the remainder of the dye is removed from the oligoester by adsorption to particulate matter in a mixture with the oligoester; and a third step in which the oligoester is separated from the particulate matter comprising the adsorbed dye, thereby providing a decolorized oligoester suitable for repolymerization, consisting on average of between 3 and 30 monomeric units.

A method and system for converting copper cyanide to copper oxide is provided. The method includes contacting a copper cyanide solution with an acidic solution in a precipitation tank under reaction conditions sufficient to produce a copper cyanide slurry, removing the copper cyanide slurry from the precipitation tank, separating solid copper cyanide from the copper cyanide slurry in a first separation device, removing the solid copper cyanide from the first separation device, contacting the solid copper cyanide with a sodium hydroxide solution in a production tank under reaction conditions sufficient to produce a copper oxide slurry, removing the copper oxide slurry from the production tank, separating solid copper oxide from the copper oxide slurry in a second separation device, and removing from the second separation device any residual sodium hydroxide not reacted during the process of contacting the solid copper cyanide with the sodium hydroxide solution in the production tank.

The invention relates to a combined structure of small-diameter tower plates, which is mainly used for liquid collection, distribution and mass transfer processes, and is particularly suitable for synthesis and refining processes of dimethyl sulfide (DMS) and dimethyl sulfoxide (DMSO). The device comprises a tray (1), an upper flange (2), a clamping piece (3), a lower flange (4), a tubular distributor (5) and a packed bed layer limiter / distribution guide plate (6) from top to bottom, the tower tray (1) adopts a radial flow design, and liquid descends from the middle to flow towards the periphery and then flows from the periphery to the middle; and the tubular distributor (5) and the packed bed layer limiter / distribution guide plate (6) are combined into a whole. According to the small-diameter tower plate structure, the mass transfer efficiency is remarkably improved.

The utility model provides a volatile organic compound replenishing device. The volatile organic compound supplementing device comprises a collecting part, the collecting part is provided with a gas collecting cavity and a flow guide cavity communicated with the gas collecting cavity, the collecting part is provided with an exhaust port, a liquid outlet and a liquid inlet, the exhaust port is communicated with the gas collecting cavity, the liquid outlet is communicated with the flow guide cavity, the liquid inlet is communicated with the flow guide cavity and / or the gas collecting cavity, and the exhaust port is constructed to be communicated with a gas recovery device; the liquid outlet is configured to be communicated with a device to be supplemented with liquid; the connector part is of a cylindrical structure with a liquid flowing channel, and an outlet of the liquid flowing channel is communicated with the liquid inlet; organic matter in the organic matter packaging barrel enters the collecting part through the liquid flowing channel, liquid organic matter in the collecting part is discharged into the device to be supplemented with liquid through the flow guide cavity and the liquid outlet in sequence, and gas organic matter in the collecting part is discharged into the gas recycling device through the gas collecting cavity and the exhaust port in sequence. According to the technical scheme, the problem that in the prior art, gas leakage is prone to occurring in the process of supplementing volatile organic matter gas is solved.

Methods and systems for the extraction of magnetic material from magnet containing material, and for extraction of rare earth elements (REEs) from the magnetic material are disclosed. An exemplary system includes a milling / washing unit for magnet containing material such as end-of-life motors, hard drives, partially deconstructed motors, magnet-containing end-of-life product, or parts thereof, and outputting magnetic components by exploiting magnetic properties of ferromagnetic and paramagnetic materials in the presence and absence of electromagnetic fields in conjunction with other physical properties such as size and density. The system also includes a chemical processing unit for receiving the magnetic components to extract rare earth elements in the material. Chemical processes are disclosed for separating rare earth elements from magnetic components.

A bio-nylon fiber containing an antioxidant active ingredient and a method for preparing the same are provided. [Solution] The method for preparing bio-nylon fiber containing antioxidant active ingredients includes the steps of preparing buckwheat leaf extract, preparing filipendula extract, preparing a porous base carrier, amination treatment, modification treatment, loading, preparing a functional masterbatch, and spinning. [Effects] The method for preparing bio-nylon fiber containing antioxidant active ingredients of the present invention can improve the binding performance of the plant extract active ingredients with antioxidant function with nylon fiber, effectively avoiding the problem of the plant extract active ingredients becoming less stable and easily inactivated during the acid dyeing process, effectively avoiding the problem of the plant extract active ingredients affecting the dyeing effect and causing uneven dyeing, and further improving the wash resistance and physical properties of nylon fiber.

A composition comprising: (i) 1,1-difluoroethene (vinylidene fluoride, R-1132a); (ii) carbon dioxide (CO2, R-744); (iii) pentafluoroethane (R-125); and (iv) one or more of trifluoromethane (R-23) and hexafluoroethane (R-116).

What is provided is a tin recovery method for recovering tin from a tin-containing material, the method including: an oxidation leaching step of performing oxidative leaching of tin in a tin-containing material into a leachate composed of an acidic solution of sulfuric acid to obtain a post-leaching liquid containing tin; an oxidation step of adding a substance that supplies sodium chloride and divalent copper ions to the post-leaching liquid obtained in the oxidation leaching step and oxidizing divalent tin ions contained in the post-leaching liquid to tetravalent tin ions; and a neutralization step of neutralizing the post-leaching liquid after the oxidation step to obtain a tin-containing precipitate.

There is provided a method for recovering lead from copper smelting dust according to the present invention includes an alkali leaching step of leaching lead contained in copper smelting dust with an alkali solution, a step of performing a solid liquid separation on a post-leaching solution and a leaching residue after the alkali leaching step, a neutralization step of adding an acid to the separated post-leaching solution to precipitate a lead, and a step of recovering a precipitate containing the lead by performing a solid liqiud separation.

The present disclosure relates to a process for purifying the lithium salt of bis(fluorosulfonyl)imide (LiFSI), in which the purified LiFSI is extracted from crude LiFSI through supercritical fluid extraction. The present invention also relates to the purified LiFSI obtained therefrom and the use of such LiFSI in an electrolyte for a battery.

A method for isolating astatine, comprising the steps of: (a) contacting a composition comprising astatine and bismuth with nitric acid to form a first solution comprising astatine, bismuth, and nitric acid, (b) contacting a resin with the first solution to separate the astatine from the first solution and partition it onto the resin, and (c) eluting the astatine from the resin. The astatine-containing composition is a compound of formula AtO + X ‐ (X ‐ is a counter ion).