1314results about "Liquid solutions solvent extraction" patented technology

A method comprises planarizing a substrate material with a functionalized chemical planarization pad. The functionalized chemical planarization pad includes a plurality of functional groups bonded to a material of the pad. The functional groups are configured to chemically react with the substrate material such that a portion of substrate material bonds to the functional groups. The pad is regenerated by applying a regeneration solution configured to break bonds between the functional groups and substrate material bonded to the functional groups to form removed material. The removed material is complexed in a dissolved complexing agent to form dissolved material in an effluent phase.

The invention relates to the technical field of liquid-liquid homogeneous microextraction, in particular to a method for microextraction analysis of perfluorooctanoic acid by using a switchable eutectic solvent. Comprising the following steps: step 1, mixing a hydrogen bond acceptor and a hydrogen bond donor according to a set proportion value, and stirring and mixing at a set temperature value to obtain a eutectic solvent; step 2, filtering the water sample through a water-based filter membrane, then adding a set amount of deep eutectic solvent, dropwise adding an alkaline solution, carrying out full vortex mixing through a mixer, and then adding an acidic solution to form an emulsion; according to the method, the high selectivity of the green solvent with a specific structure on perfluorooctanoic acid and the characteristic that the solvent is switched between hydrophilic and hydrophobic forms are utilized, so that the microextraction time is shortened, and the impurity removal and enrichment effects are enhanced. The method is simple and convenient to operate, green, environment-friendly, low in cost and good in effect, has the advantage of efficiently and rapidly pretreating the batch small-size complex matrix sample, and has a relatively good application prospect.

To provide an extractant for selectively extracting lithium salt, a method for recovering lithium salt, and a method for producing lithium salt.SOLUTION: A lithium salt extractant comprises at least one selected from a group consisting of a compound represented by a general formula (1) and a compound represented by the general formula (2) (where X1, X2, X3 and X4 independently represent an oxygen atom, a sulfur atom, a sulfinyl group, a sulfonyl group, a carbonyl group, or an imino group).SELECTED DRAWING: None

The invention provides a large-scale fluid extraction and separation intelligent control method based on a mixing tank structure, and relates to the technical field of intelligent control, and the method comprises the steps: collecting parameter information in a mixing tank through double-cycle sampling, dividing flow field partitions based on three-dimensional numerical characteristics, collecting concentration gradient information of a target object, and building a digital twinborn model; executing a partition self-adaptive control strategy to dynamically adjust stirring parameters, controlling extraction agent supplement, adjusting the opening degree of a partition plate, and monitoring and updating the control strategy in real time. According to the method, precise zone control is realized, the extraction efficiency is improved, the energy consumption is reduced, and the method adapts to complex working condition changes.

This disclosure relates to an annular centrifugal extractor with Solid Separation Part to Separate Solid Particles Present in Solvent Extraction Fluid. In order to remove solid particles from the solution, a solid separation part / rotating bowl is attached to rotating bowl in such a way that solid particles settle inside the solid separation part. This solid separating centrifugal extractor contains two parts: (I) upper part which acts as a liquid-liquid separator to separate aqueous and organic solution used in solvent extraction operation and (II) bottom part which acts as a solid separator to separate solid particle present in solvent extraction liquids. The bottom rotating rotor is coupled with upper rotating rotor by threading arrangement. Both the rotating rotors are confined within a stationary cylinder. Dispersion with solid particles entering inside the rotating bowl is deflected towards the wall of the rotating cylinder by deflecting baffle by centrifugal sedimentation.

The invention discloses an egg yolk lecithin separation and extraction device and a technology thereof, and relates to the technical field of separation and extraction, the egg yolk lecithin separation and extraction device comprises: a stirring barrel, the stirring barrel is arranged on the ground; the feeding hole is fixedly formed in the top of the stirring barrel; the solvent tank is fixedly mounted at the top of the stirring barrel, and a chloroform solution is arranged in the solvent tank; the separating funnel is fixedly mounted at the bottom of the stirring barrel, and the separating funnel is used for separating an egg phosphorus solvent from a water phase; the motor is fixedly mounted at the top of the stirring barrel; the stirring rod is fixedly mounted at the output end of the motor, and a reciprocating spiral groove is formed in the surface of the stirring rod; the stirring plate is fixedly mounted at the bottom of the stirring rod; the elastic telescopic rod enables egg yolk and chloroform on the sliding plate to be mixed more sufficiently through up-down movement of the sliding plate.

The invention belongs to the technical field of organic matter extraction, and particularly relates to a green directional extraction and purification method for haematococcus astaxanthin, which comprises the following steps: (1) mixing dried haematococcus powder and a composite pretreatment agent according to a mass ratio of 1: (8-15), and stirring to obtain a pretreated algae solution; (2) treating the pretreated algae liquid through ultrahigh-pressure microjet equipment to obtain wall-broken slurry; (3) mixing the wall-broken slurry and a composite extraction agent according to a volume ratio of 1: 3-1: 5, and performing extraction separation to obtain an astaxanthin extraction phase; (4) carrying out selective adsorption on the astaxanthin extraction phase through an adsorption column filled with a molecular imprinting adsorbent; (5) collecting eluent by adopting a gradient elution method; and (6) performing vacuum concentration on the eluent, and performing spray drying to obtain an astaxanthin product. According to the method, the astaxanthin extraction efficiency and the product purity are remarkably improved, meanwhile, the energy consumption is reduced to the maximum extent, toxic solvent residues are avoided, and the stability of the astaxanthin is effectively protected.

The invention discloses a method for preparing a battery-grade lithium compound. The method comprises the following steps: S1, carrying out sulfuric acid acidification reaction on a lithium-containing raw material or roasting by adding sulfate, and carrying out water leaching to obtain leached slurry; the lithium-containing raw material is a lithium mineral or a waste lithium battery material; s2, calcium oxide or calcium hydroxide is added into the leaching slurry, filtering is performed after full reaction, filtrate A and filter residues A are obtained, the main component of the filtrate A is lithium hydroxide, and the filtrate A further comprises soluble impurities formed after water leaching; s3, adding a substance for removing calcium ions into the filtrate A, fully reacting, and filtering to obtain filtrate B and filter residues B; s4, fully contacting the filtrate B with an extracting agent for extraction, and then separating to obtain a loaded organic phase and raffinate; s5, reversely extracting the loaded organic phase to obtain a lithium solution and a blank organic phase; and S6, further treating the lithium solution to obtain the battery-grade lithium compound. Sodium ions are basically not introduced, the energy consumption is low, the process is simplified, the product quality is high, the production cost is low, the lithium yield is high, and byproducts are convenient to treat.

Targetry coupled separation refers to enhancing the production of a predetermined radiation product through the selection of a target (including selection of the target material and the material's physical structure) and separation chemistry in order to optimize the recovery of the predetermined radiation product. This disclosure describes systems and methods for creating (through irradiation) and removing one or more desired radioisotopes from a target and further describes systems and methods that allow the same target to undergo multiple irradiations and separation operations without damage to the target. In contrast with the prior art that requires complete dissolution or destruction of a target before recovery of any irradiation products, the repeated reuse of the same physical target allowed by targetry coupled separation represents a significant increase in efficiency and decrease in cost over the prior art.

The invention discloses an immersed rotating packed bed combined coil device and method for reactive extraction, and the combined coil device comprises a shell, a liquid inlet, a sealing assembly, a liquid premixing pipe, a packing assembly, a heat exchange jacket, a liquid emptying port, a liquid outlet and a spiral coil assembly; according to the device, a reactor cavity is completely filled with liquid, so that an immersed reaction environment is formed; and a strong shearing effect is generated by utilizing the supergravity silk screen filler, so that rapid heterogeneous mixing is realized, and the reaction selectivity is improved. Meanwhile, a supergravity reaction area and a coil flow area are combined into a whole, the spiral coil can repeatedly change the flow direction and form vortex to realize continuous flow of the material and maintain the dispersion state of liquid drops, and the retention time of the material is flexibly regulated and controlled by adjusting the length of the coil, so that the reaction conversion rate is remarkably improved.

The invention discloses an application of an ionic liquid in extraction of trioxymethylene, in the process of generating trioxymethylene by acid-catalyzed condensation of a formaldehyde aqueous solution, the ionic liquid is added as an extraction agent to extract and separate the trioxymethylene generated by reaction, and the ionic liquid is methyl tributyl phosphonium bis (trifluoromethanesulfonyl) imide salt; when the ionic liquid is used for extracting trioxymethylene, a ternary azeotropic system of trioxymethylene, water and methylene glycol can be broken, the ionic liquid and trioxymethylene are subjected to nonpolar Van der Waals' force interaction so as to realize extraction, and methylene glycol and water are left in a water phase through hydrogen-bond interaction, so that high-purity trioxymethylene with the purity of more than or equal to 99.5 wt.% is obtained.

The invention discloses equipment and a process for efficiently and continuously extracting astaxanthin by a low-frequency microwave-assisted eutectic solvent method, and belongs to the technical field of bioactive substance extraction. The method for extracting astaxanthin by the low-frequency microwave-assisted eutectic solvent method comprises the following steps: performing low-frequency microwave pretreatment on a eutectic solvent to obtain a high-temperature pretreated eutectic solvent; cooling the pretreated eutectic solvent, then mixing the pretreated eutectic solvent with crustacean byproducts, performing eutectic solvent extraction treatment, performing ultrasonic-assisted extraction in the process, and then performing solid-liquid separation to obtain filtrate; mixing the filtrate with an extraction solvent, and extracting to obtain an extraction solvent phase containing astaxanthin and a eutectic solvent phase; and removing the extraction solvent in the extraction solvent phase containing the astaxanthin to obtain an astaxanthin product.

The invention discloses a method for efficiently extracting phenol from coal tar and primarily separating crude phenol oil, and relates to the technical field of chemical separation. Carrying out multi-stage cross-flow or counter-flow extraction on the extracting agent and the coal tar to obtain a raffinate phase and a high-concentration extraction phase; and mixing the raffinate with condensate at the top of the regeneration device and supplemented fresh water, and recovering residual organic amine through a reverse extraction device to obtain a dephenolized oil product and backwashing water. Mixing and diluting the extract phase with backwashing water, and standing for phase splitting to obtain a high-grade crude phenol oil phase and a low-concentration extract phase; the low-concentration extraction phase absorbs CO2 in the industrial tail gas for acidification to obtain a low-grade crude phenol oil phase and an amine salt aqueous solution; and desorbing the amine salt aqueous solution to obtain a regenerated extraction agent (circularly used for extraction), tower top condensate (circularly used for reverse extraction) and water-containing industrial-grade CO2 gas (recycled or sealed after drying). According to the method, high-efficiency extraction of the phenolic compounds in the coal tar and primary separation of crude carbolic oil are realized by utilizing the extraction performance differences of extraction capacities, selectivity and the like of the extraction agents with different concentrations on the phenolic compounds, and the production economy is improved.

This disclosure provides an optimized, energy-efficient, and sustainable solution for continuous in situ bio-based chemical recovery by integrating high pressure reverse osmosis with extraction processes. These systems achieve higher recovery efficiency while reducing production costs and environmental impact.

The invention relates to an olefin hydroformylation homogeneous catalysis continuous reaction process and system. The process comprises the following steps: mixing raw materials olefin, synthesis gas and a metal catalyst, and then carrying out hydroformylation reaction; removing a light component containing the product aldehyde from the hydroformylation reaction liquid to obtain a heavy component containing the metal catalyst; uniformly mixing the heavy component with a first extraction agent, and performing phase splitting to obtain a first heavy component phase and a first extraction agent phase; a metal catalyst and a second extraction agent are separated from the first extraction agent phase, the metal catalyst is circularly used for the hydroformylation reaction, and the second extraction agent is used as the first extraction agent mixed with the heavy components. Based on the characteristics of solubility difference and specific gravity difference between the metal catalyst and other substances in the heavy components under specific conditions, the heavy components in a reaction system are reacted at a lower temperature on the premise of not additionally adding a reagent which can influence the activity of the catalyst, and the activity of the catalyst can be well maintained within a longer reaction time.

Devices, systems, and techniques can be provided for processing an oil-containing material with an alcohol-based solvent to extract oil from the material. In some examples, a system includes a pretreatment dehydration vessel that removes water from the oil-containing material prior to processing the oil-containing material in an extractor to extract oil from the material. An alcohol-based solvent may also be supplied to the dehydration vessel to remove water from the oil-containing material, thereby generating a dehydrated material that can be extracted in a downstream extractor.

The invention discloses a metal ion extraction and separation device and a use method thereof.The device comprises a separation bin and a mixing chamber, a defoaming module is arranged at the inner top of the separation bin, and the inner bottom of the separation bin is divided into a clarifying chamber and a purifying chamber through a partition plate arranged in the middle. Low-speed, high-shear and multi-chamber mixing is achieved, the mixing effect is ensured, then an emulsion layer is preliminarily eliminated through the defoaming module, fluid kinetic energy consumption is achieved through a slow flow frame, a flow channel extension plate, a pore plate and a T-shaped plate which are sequentially designed in the clarifying chamber, and the natural layering efficiency is improved; the monitoring module is used for controlling and sucking an emulsion layer between the two phases to enter the centrifugal chamber for centrifugal separation, and the indirect flow bin is used for realizing rapid and effective separation and recovery of other phases in the target phase, so that the emerald green effect in the whole ion extraction process is improved, the purity of the separated two phases is improved, and meanwhile, the problem that the emulsion layer is difficult to separate is solved.

The invention relates to a method for producing solid lithium salt through extraction-liquid-liquid-solid three-phase reverse extraction from a lithium-containing solution, which comprises the following steps: (1) mixing the lithium-containing solution with a composite extraction agent, and carrying out extraction treatment to obtain a lithium-loaded first organic phase and a raffinate phase; (2) carrying out impurity removal treatment on the first organic phase to obtain a second organic phase; and (3) mixing the second organic phase with a stripping agent, carrying out stripping treatment to obtain an oil-water-solid three-phase mixed phase containing solid lithium salt, and carrying out phase separation on the mixed phase to obtain the solid lithium salt, wherein the stripping agent is an acid solution containing a lithium salt solid. According to the method, efficient separation of lithium and a large number of impurities is achieved through extraction and washing treatment, the solid lithium salt is directly obtained after reverse extraction treatment, the battery-grade solid lithium salt product can be obtained after impurity removal treatment, and the method has the advantages of being simple in preparation technology, short in process, high in product purity and low in production cost.

Rare earth extractant compounds having the following structure:wherein R1, R2, R3, and R4 are independently selected from alkyl groups containing 1-30 carbon atoms and optionally containing an ether or thioether linkage connecting between carbon atoms, provided that the total carbon atoms in R1, R2, R3, and R4 is at least 12; R5 and R6 are independently selected from hydrogen atom and alkyl groups containing 1-3 carbon atoms; and provided that at least one of the conditions (i)-(iv) apply as follows: presence of a distal branched group in at least one of R1-R4 (condition i), asymmetry in R1-R4 (condition ii), presence of amine-containing ring (condition iii), or presence of lactam ring (condition iv). Also described are hydrophobic water-insoluble solutions containing at least one extractant compound of Formula (1), as well as method for extracting rare earth elements from aqueous solution by contacting the aqueous solution with the water-insoluble solution.

Described are liquid compositions that contain a desired (e.g., extracted) plant material such as cannabinoid, terpene, terpenoid, or the like, contained, e.g., dissolved, suspended, or emulsified, in the liquid, which contains surfactant; methods of preparing these types of liquid compositions; and methods of processing this type of liquid composition to collect, isolate, concentrate, or purify a desired target material contained in the liquid composition.

The invention belongs to the technical field of green chemistry and sustainable chemical engineering, and discloses a method for recovering an acidic eutectic solvent by combining anti-solvent precipitation with activated carbon adsorption. Water-insoluble high-molecular-weight lignin in the deep eutectic solvent black liquor is removed by an anti-solvent precipitation technology, and then residual low-molecular-weight water-soluble lignin and polysaccharide in the solution are further adsorbed and removed by using activated carbon with high specific surface area and rich pore structure; and the eutectic solvent with high purity and unobviously changed structure is recovered. The method is suitable for various acidic deep-eutectic solvents, the operation is simple, water and activated carbon in the recovery process can be repeatedly used, and the obtained water-insoluble lignin, water-soluble lignin and polysaccharide have high application value.

A device for recovering entrained organic particles from an aqueous solution is provided. The device comprises a tank configured to receive a mixed solution through an inlet, wherein the mixed solution comprises an aqueous solution and organic particles, a plurality of curved impellers configured to impel a torque on the mixed solution, wherein in response to receiving the torque the mixed solution moves in a rotational motion within the tank, a deflector wall coupled to the floor extending vertically from the floor and surrounding the plurality of curved impellers to form an inner well configured to direct a flow of the rotating mixed solution towards a top surface of the tank, and a skim launder coupled to a boundary wall of the tank and positioned at the top surface, wherein the skim launder is configured to recover organic particles from the tank as they separate from the aqueous solution.

Described are compositions including a reaction product of an amino alcohol and an aldehyde and a reaction product of a monohydric or polyhydric alcohol, an aldehyde and a nitrogen-containing compound. In addition, processes for removing sulfur compounds from process streams using such compositions are described, as well as such processes in which the process stream is contacted independently with a reaction product of an amino alcohol and an aldehyde and a reaction product of a monohydric or polyhydric alcohol, an aldehyde and a nitrogen-containing compound. Further described is the use of such compositions to remove sulfur compounds from process streams and the use of a reaction product of an amino alcohol and an aldehyde and a reaction product of a monohydric or polyhydric alcohol, an aldehyde and a nitrogen-containing compound to remove sulfur compounds from process streams.

Targetry coupled separation refers to enhancing the production of a predetermined radiation product through the selection of a target (including selection of the target material and the material's physical structure) and separation chemistry in order to optimize the recovery of the predetermined radiation product. This disclosure describes systems and methods for creating (through irradiation) and removing one or more desired radioisotopes from a target and further describes systems and methods that allow the same target to undergo multiple irradiations and separation operations without damage to the target. In contrast with the prior art that requires complete dissolution or destruction of a target before recovery of any irradiation products, the repeated reuse of the same physical target allowed by targetry coupled separation represents a significant increase in efficiency and decrease in cost over the prior art.

The invention discloses a production system and method for preparing high-carbon aldehyde through carbonyl synthesis of high-carbon olefin. The system comprises a reaction device, a separation device, an aldehyde condensing device, a product tank, a polymer supplementing unit and a recycling unit, the polymer supplementing unit is connected with the separating device; the cyclic utilization unit comprises an extraction separation device connected with a liquid phase outlet of the separation device, a polymer recovery device connected with a water phase outlet of the extraction separation device, and a catalyst regeneration device connected with an organic phase outlet of the extraction separation device. According to the method, a carbonyl metal catalytic system is adopted to catalyze reaction of high-carbon olefin and synthesis gas, and heating separation of reaction liquid is performed by introducing an organic polymer protection catalyst; the separated catalyst liquid phase is subjected to water extraction separation and post-treatment, and the organic polymer and the catalyst are recycled. Recycling of the catalyst and efficient separation of the product are realized, and the stability of the catalyst separation section is enhanced.

The utility model discloses a multiphase mixing and separating device which comprises a cylindrical groove body, and a transverse partition plate is arranged on the lower portion of an inner cavity of the cylindrical groove body and divides the inner cavity of the cylindrical groove body into a two-phase converging area and a two-phase mixing and separating area. A longitudinal partition plate is arranged in the middle of the two-phase afflux area and divides the two-phase afflux area into an organic phase area and a water phase area; an organic phase inlet pipeline connector and a water phase inlet pipeline connector are arranged at the bottom of the cylindrical tank body; a two-phase confluence port is formed in the center of the transverse partition plate, and the organic phase area and the water phase area are both communicated with the two-phase confluence port; the two-phase mixing and separating area is divided into a vortex channel by a vortex partition plate, the central area of the vortex channel is a stirring area, and a mixed phase outlet is formed in the side wall of the stirring area; phase splitting plates are longitudinally distributed in the vortex channel; a stirring motor is arranged at the top of the cylindrical tank body and is connected with a stirring rod extending into the stirring area; a water phase outlet is formed in the lower part of the side wall of the two-phase mixing and separating area; an organic phase outlet pipeline interface is formed in the upper part of the side wall of the two-phase mixing and separating area; and a water phase regulator is arranged outside the side wall of the two-phase mixing and separating area.

The invention provides an L-lactide purification device and an L-lactide purification method. The L-lactide purification device comprises a crystallization unit, an evaporation unit, a condensation unit and an extraction unit, the crystallization unit is at least used for crystallizing, sweating and melting the raw materials to form L-lactide and crystallization raffinate; the inlet of the evaporation unit is communicated with the crystallization residual liquid outlet of the crystallization unit, and the evaporation unit is at least used for evaporating the crystallization residual liquid to form evaporation gas; an inlet of the condensation unit is communicated with a gas phase outlet of the evaporation unit, and the condensation unit is at least used for condensing the evaporation gas to form condensate; a liquid phase inlet of the extraction unit is communicated with a liquid phase outlet of the condensation unit, and the extraction unit is at least used for extracting condensate to form a first component containing L-lactide; the outlet of the extraction unit is communicated with the crystallization unit, so that the crystallization unit adopts the first component as a raw material for crystallization. According to the embodiment of the invention, the yield of the L-lactide can be improved, and the L-lactide with high chemical purity and high optical purity can be obtained.

The invention relates to a device and a method for preparing isobutene and methanol by cracking methyl tert-butyl ether. The device comprises a methyl tert-butyl ether vaporization refining tower, a reactor, a cooling tower, an absorption tower, a methanol extraction tower, an isobutene light component removal tower and an isobutene heavy component removal tower which are sequentially connected along a material conveying direction, a top discharge hole of the cooling tower is connected with a lower gas-phase material inlet of the absorption tower; an absorbent outlet at the bottom of the absorption tower is circularly connected with a cooling absorption liquid inlet at the top of the cooling tower; the bottom extract liquor outlet of the methanol extraction tower is circularly connected with the top absorbent inlet of the absorption tower; an isobutylene discharge hole is formed in the top of the isobutylene heavy component removal tower; the device further comprises a methanol recovery tower and a methanol refining tower which are connected in sequence along the material conveying direction; a bottom cooling absorption liquid outlet of the cooling tower is connected with the methanol recovery tower; a methanol discharge hole is formed in the bottom of the methanol refining tower. The device provided by the invention not only can relax the limitation of the purity of methyl tert-butyl ether in raw materials, but also can prepare high-purity isobutene and high-purity methanol at the same time.

The utility model provides an energy-saving device for separating and purifying materials after hydroxylation reaction of phenol and hydrogen peroxide, and relates to the technical field of chemical synthesis. Materials obtained after phenol hydrogen peroxide hydroxylation reaction are separated and purified through the extraction tower, the extraction agent recovery tower, the first phenol removal tower, the tar removal tower, the second phenol removal tower, the catechol removal tower, the light component removal tower and the hydroquinone tower, the whole technological process is simple, the yield is high, and the high-purity hydroquinone product and the high-purity catechol product can be obtained; according to the utility model, the extraction tower is adopted to replace a dehydration rectifying tower in the traditional process to remove phenol-containing wastewater, so that the phenol recovery rate is improved, and the subsequent wastewater treatment burden is reduced; and the tar removal tower is arranged behind the phenol removal tower I, so that the retention time of tar impurities in the whole process system is shortened, and the process safety is improved. According to the utility model, the high-temperature waste heat at the top of the dephenolization tower I is recovered by combining waste heat recovery with a mechanical steam recompression energy-saving technology, so that the process energy consumption of the operation of the whole device is effectively reduced.

The invention provides a process for co-production of HFC-236ea, Z-HFO-1225ye, E-HFO-1225ye and HFO-1234yf, and the process comprises the following steps: reacting hydrogen with HFO-1225ye in the presence of a first catalyst to obtain a first reaction product flow; mixing the first reaction product flow with HFP, and reacting in the presence of a second catalyst to obtain a flow containing HFC-245eb and HFC-236ea; then, a material flow containing HFC-245eb and a material flow containing HFC-236ea are obtained through separation; carrying out a reaction on the material flow containing HFC-236ea in the presence of a third catalyst, washing with water, and extracting to obtain a Z-HFO-1225ye material flow and an E-HFO-1225ye material flow; and reacting the material flow containing HFC-245eb in the presence of a fourth catalyst, and washing and separating to obtain the material flow of HFO-1234yf.