788results about "Liquid solutions solvent extraction" patented technology

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 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 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.

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.

The invention belongs to the technical field of biological medicine, and discloses a dry blood spot liquid chromatography-mass spectrometry detection method adaptive to 7 metabolites. According to the method, a pH / polarity double-trigger microcapsule solvent carrier system is adopted, high-polarity extraction solvents, medium-polarity extraction solvents and low-polarity extraction solvents are packaged in the pH / polarity double-trigger microcapsule solvent carrier system in a layered mode, the solvents are released in sequence according to local pH and polarity changes in the extraction process, and amino acid, acyl carnitine, organic acid, bile acid, steroid, fatty acid and glycometabolism intermediate products are efficiently extracted respectively. The method disclosed by the invention breaks through the inherent limitation of a traditional static solvent system, solves the problem of unbalanced recovery rate caused by insufficient solvent suitability in dry blood spot extraction of seven metabolites with great polarity span, and remarkably improves the accuracy, reproducibility and coverage range of a DBS-LC-MS / MS platform in synchronous detection of multi-component metabolites; and reliable technical support is provided for newborn inherited metabolic disease screening, endocrine disease diagnosis and drug metabolism research.

This invention discloses an extraction solvent recovery device for reducing the unit consumption of dichlorophenol (oxadiazon), belonging to the field of chemical equipment. The device includes: an extraction vessel, rotatably connected to a stirring shaft, with a partition plate attached to the inner wall of the extraction vessel. The partition plate has several evenly distributed sedimentation ports. A lifting frame is slidably connected to the stirring shaft, with sealing plates corresponding to each sedimentation port. A lifting assembly is connected to the partition plate, and the lifting assembly is driven by a drive mechanism. This assembly moves the lifting frame and the sealing plates, sealing the sedimentation ports and thus isolating the upper and lower layers of liquid within the extraction vessel, allowing for the extraction of the upper layer. Simultaneously, by isolating the upper and lower solutions within the extraction vessel, the device effectively improves the convenience and efficiency of phenol recovery, solving the problem of high unit consumption of dichlorophenol in existing solutions.

The application discloses a system and method for preparing 1-butene by using catalytic C4, and belongs to the technical field of 1-butene production. The technical scheme is that the system comprises an etherification reactor, a catalytic distillation column, a deep etherification reactor, a light component removal column and a heavy component removal column which are sequentially connected. The application uses catalytic C4 as raw material to prepare 1-butene, widens the raw material source for preparing 1-butene, improves the utilization rate of catalytic C4, and has a good application prospect.

This invention relates to the field of centrifugal extractor technology, and more particularly to a tank-type centrifugal extractor, comprising an extraction tank, an inlet pipe and an outlet pipe disposed on the extraction tank, and valves provided on both the inlet pipe and the outlet pipe. Three extraction tanks are provided, and a switching block is provided between each extraction tank. The switching block is provided with an installation mechanism for mounting on two adjacent extraction tanks. An L-shaped cavity is formed inside the switching block, and a discharge hopper is fixedly connected to the bottom end of the L-shaped cavity. A feed hopper is fixedly connected to the top end of the other end of the L-shaped cavity. Through the configuration of the switching block and switching mechanism, this invention allows for flexible switching of the extraction system according to actual extraction needs. This enables multiple extraction tanks to not only operate independently, but also to be directly switched when multi-stage extraction is required, greatly improving the convenience and flexibility of the device.

The utility model discloses an atomization separation device for extracting tea saponin. The atomization separation device comprises a separation tank body, a liquid inlet pipe, a hydrophobic membrane, a heater, an ultrasonic vibrator, a cooling fan, a shunting cover and a liquid outlet pipe, the separation inner plate is used for separating the separation tank body into a containing cavity and an atomization cavity, the ultrasonic vibrator is located in the containing cavity, the hydrophobic membrane is arranged at the top of the atomization cavity in a surrounding mode, the cooling fan is used for generating airflow enabling tea saponin liquid drops to be condensed, and the liquid outlet pipe is arranged in the middle of the hydrophobic membrane. The separation tank body is divided into the containing cavity and the atomization cavity through the separation inner plate, a tea saponin solution can be conveyed to the atomization cavity through the liquid inlet pipe, efficient atomization of the tea saponin solution can be achieved through the synergistic effect of the ultrasonic vibrator and the heater, atomized tea saponin liquid drops can be extracted through the hydrophobic membrane, and the tea saponin liquid drops can be extracted through the liquid inlet pipe. The low-temperature airflow generated by the cooling fan can condense the liquid drops into a liquid concentrated solution, and the liquid concentrated solution is intensively discharged through the liquid outlet pipe; the whole structure is compact, and the extraction efficiency of tea saponin and the purity of a concentrated solution can be effectively improved.

The present invention relates to a helical insert for a centrifugal partition chromatography extraction unit, as well as a centrifugal partition chromatography extraction unit comprising the insert and a method of manufacturing the same. The axial direction of the spiral insert is substantially parallel to the longitudinal axis of the extraction unit, and the side of the spiral close to the inner wall of the extraction unit is attached to the inner wall, or when the rotor containing the extraction unit rotates at the required separation speed, the part of the spiral close to the inner wall of the extraction unit is attached to the inner wall. The invention further relates to a rotor for a centrifugal partition chromatography device, the rotor comprises the centrifugal partition chromatography extraction unit, the centrifugal partition chromatography device comprising the rotor and application of the rotor in centrifugal partition chromatography separation.

This invention relates to the field of lithium extraction from lithium precipitated mother liquor, and provides a method for preparing battery-grade lithium chloride from lithium precipitated mother liquor, comprising: S1 cooling the lithium precipitated mother liquor and then performing precision filtration to remove solid particles; S2 adding a crown ether additive to the lithium precipitated mother liquor after filtration in step S1 to obtain a pretreated mother liquor; S3 performing multi-stage extraction on the pretreated mother liquor using a lithium extractant to obtain a loaded organic phase; S4 first performing multi-stage washing on the loaded organic phase with a mixed washing liquid, and then back-extracting to obtain a lithium chloride solution; S5 sequentially subjecting the lithium chloride solution to resin adsorption for oil removal and evaporation crystallization to obtain a battery-grade lithium chloride product. This method reduces sodium activity from the source by adding a crown ether additive in the extraction stage to reduce sodium co-extraction, and simultaneously adds a sodium replacement additive in the washing stage to chemically complex residual sodium ions to improve the efficiency of single-stage washing, thereby reducing the number of extraction stages and washing stages, significantly reducing equipment investment and operating costs compared to traditional processes.

Single-stage and multi-stage systems and methods for the recovery of critical elements in substantially pure form from lithium ion batteries are provided. The systems and methods include supported membrane solvent extraction using an immobilized organic phase within the pores of permeable hollow fibers. The permeable hollow fibers are contacted by a feed solution on one side, and a strip solution on another side, to provide the simultaneous extraction and stripping of elements from dissolved lithium ion cathode materials, while rejecting other elements from the feed solution. The single- and multi-stage systems and methods can selectively recover cobalt, manganese, nickel, lithium, aluminum and other elements from spent battery cathodes and are not limited by equilibrium constraints as compared to traditional solvent extraction processes.

The invention belongs to the technical field of petrochemical engineering and fine chemical engineering separation, and discloses a method and device for separating alpha-olefin and isomers thereof by using metal-based ionic liquid and application, and the method comprises the following steps: mixing a raw material solution containing target alpha-olefin with an extraction agent; performing liquid-liquid extraction; after standing and layering, respectively collecting an extraction phase and a raffinate phase; components in the extraction phase and the raffinate phase are qualitatively and quantitatively analyzed, and the partition coefficient, the separation selectivity and the purity are evaluated; and analyzing the target alpha-olefin in the extraction phase, and recovering through a reduced pressure rotary evaporation process. According to the method, the metal-based ionic liquid with dual effects of pi-complexation and spatial recognition is introduced as the extraction agent, so that high-selectivity recognition and enrichment of the target normal alpha-olefin are realized, interference of internal olefin, branched olefin and saturated isoparaffin is effectively inhibited, and the purity and selectivity of the target component are remarkably improved.

The application discloses a kind of miraculin compounds and its extraction method and application, belong to the field of traditional Chinese medicine extraction, specifically related to a kind of miraculin compounds as shown in general formula (I) and (II) isolated from Rhododendron dauricum and the extraction method of the compound, and the compound or the isomer of the compound, or the inhibitory effect of the compound on inflammation in pharmaceutically acceptable salt or pharmaceutical composition comprising the compound can be used for preparing anti-inflammatory drugs.The application further enriches the structural diversity of active substances of Rhododendron dauricum, which lays a foundation for subsequent related biological activity tests of monomeric compounds, provides active lead compounds for new drug development, and also provides a theoretical basis for in-depth research and development of Rhododendron dauricum medicinal materials.

The invention relates to an adjustable drum of a centrifugal extractor, which comprises a drum, a separation channel assembly fixed on the drum for separating heavy and light phases, and an adjusting assembly for adjusting the size of the heavy phase and / or light phase outlet, a main shaft of the centrifugal extractor passing through the center of the drum and being connected with the drum, a plurality of flow uniformizing plates being evenly distributed in the radial direction in the drum, the drum being divided into a plurality of separated cavities by the flow uniformizing plates, and flow uniformizing holes being formed in the flow uniformizing plates. The heavy phase and / or light phase outlets of the adjusting assembly and the separation channel assembly are both waist-shaped holes and are located on the same circle. When the adjusting assembly is rotated, the size of the heavy phase outlet or light phase outlet formed by the superposition of the waist-shaped holes of the adjusting assembly and the separation channel assembly changes. The adjustable drum of the invention can conveniently adjust the size of the heavy phase and / or light phase outlet, thereby simply and quickly adjusting the proportion of the heavy and light phase liquids, meeting the requirements of different materials and occasions, and making the centrifugal extractor more versatile. The flow uniformizing holes formed in the flow uniformizing plates make the operation of the drum more stable and the separation effect better.

A method for producing mixed metal salts containing manganese ions and at least one of cobalt ions and nickel ions, the method including: an Al removal step of subjecting an acidic solution containing at least manganese ions and aluminum ions, and at least one of cobalt ions and nickel ions, to removal of the aluminum ions by extracting the aluminum ions into a solvent, the acidic solution being obtained by subjecting battery powder of lithium ion batteries to a leaching step; and a precipitation step of neutralizing an extracted residual liquid obtained in the Al removal step under conditions where a pH is less than 10.0, to precipitate mixed metal salts comprising a metal salt of manganese and a metal salt of at least one of cobalt and nickel.

The invention relates to the technical field of grease chemical industry, and discloses high-iodine oleic acid and a preparation method thereof.The preparation method comprises the steps that waste grease is pretreated; adding a polar modifier into supercritical CO2 to selectively extract oleic acid; adding a polar accelerant compound system into the supercritical system to carry out iodination reaction; refining and separating the product through pressure gradient; and establishing a circulating reiodination system, and returning medium and low iodination products to the iodination step for continuous reaction through a supercritical phase back-mixing technology and precise iodine source addition. According to the method, the oleic acid extraction selectivity coefficient is increased by 40-60% by introducing the polar modifier, the iodination reaction rate is increased by 50-80% through a polar accelerant compounding system, the total yield is increased to 75-85% from 60-70% through a circulating reiodination system, the product purity reaches 95-98%, high-value utilization of the waste grease is achieved, the production cost is greatly reduced by 40-60%, and the method is suitable for industrial production. No organic solvent is left, and the method is environment-friendly.

The invention discloses a hydrosolvent distillation, compression and separation device, which belongs to the technical field of chemical separation and comprises a reaction kettle, a gas-liquid separator, a low-pressure balance tank, a high-pressure balance tank, a low-pressure steam purification filter, a steam compressor, a steam boiler, an electric cabinet and a condensed water heat recoverer. The steam compressor sucks steam of a water solvent, reduces pressure in the reaction kettle and promotes evaporation of the water solvent in the reaction kettle, the steam compressor compresses the steam of the water solvent into high-temperature and high-pressure steam to enter a heating layer of the reaction kettle, and extract and a solvent in the reaction kettle are condensed into liquid to flow out while being heated; the energy consumption of the device is 20% of the energy consumption of a distillation cooling device, and compared with the distillation cooling device, the energy consumption can be reduced by 80%.

A method for recovering lithium bis(fluorosulfonyl)imide is provided in the present application. The method of the present application comprises: mixing a slag from lithium bis(fluorosulfonyl)imide production process with a solvent of carbonate ester, to obtain a mixed material; subjecting the mixed material to solid-liquid separation, to obtain a discharged liquid and a solid slag; monitoring the chromaticity of the discharged liquid and comparing the chromaticity of the discharged liquid with a chromaticity reference; recycling the discharged liquid to the mixed material, if the chromaticity of the discharged liquid is higher than the chromaticity reference; and recycling the discharged liquid to lithium bis(fluorosulfonyl)imide production process, if the chromaticity of the discharged liquid is lower than or equal to the chromaticity reference.

The application belongs to the technical field of aqueous solution extraction treatment, and specifically discloses application of a thymol-based deep eutectic solvent in extraction of rhodamine B in water. The deep eutectic solvent is composed of a hydrogen bond acceptor thymol (Th) and a hydrogen bond donor n-hexanol (C6), and the molar ratio of the two is 1:1. By investigating the extraction efficiency under different temperatures, rhodamine B concentrations, extraction times and volume ratios of the deep eutectic solvent to aqueous solution, the optimal extraction conditions are obtained as follows: when the volume ratio of the deep eutectic solvent to the rhodamine B aqueous solution is 10:1, the rhodamine B concentration is 200 mg / L, the temperature is 298.15 K and the extraction time is 20 min, the extraction efficiency is as high as 99.64%. The results show that the thymol-based deep eutectic solvent has excellent extraction capacity for rhodamine B in water, and has low preparation cost, environmental friendliness and wide application prospect in the fields of sewage treatment and the like.

The invention relates to a rapid outburst elimination system for cross-cut coal uncovering. The rapid outburst elimination system comprises an extraction pipe, an injection pipe and an ultrasonic transducer which are arranged in a drill hole. The outer end of the injection pipe is connected with a gas injection stop valve, a pressure pump, a heater and a carbon dioxide storage tank through an injection pipeline, a four-way valve is arranged on the injection pipeline between the injection pipe and the gas injection stop valve, and the four-way valve is connected with a temperature sensor and a gas injection pressure gauge; the outer end of the extraction pipe is connected with a heat exchanger, a gas separation tower, a pressure adjusting device and an extract separation tower through an extraction pipeline; the upper end of the extract separation tower is connected with a carbon dioxide storage tank through a circulating pipeline; and the outer end of the ultrasonic transducer is electrically connected with the ultrasonic generator. According to the ultrasonic-assisted supercritical carbon dioxide cyclic extraction anti-reflection technology, organic matters in the coal seam can be extracted through supercritical carbon dioxide, so that the permeability of the coal seam is improved, and the technology is reasonable in structure, simple in device, convenient to implement, safe and reliable.

The application belongs to the field of microfluidic chemical analysis and separation technology, and particularly relates to a high-throughput full-automatic liquid-liquid countercurrent microextraction system, which comprises a plurality of countercurrent microextraction combinations, each of which comprises a suction filtration unit, a countercurrent microextraction unit and a fluid power unit; the plurality of countercurrent microextraction units realize multi-channel synchronous extraction, the suction filtration unit integrates filtration and negative pressure circulation to complete sample pretreatment, and the fluid power unit is composed of a suction pump, a plurality of peristaltic pumps and a plurality of capillary connectors to form a full-automatic flow path, so that the extraction process is unattended throughout the whole process. The application realizes mass transfer enhancement through the reverse staggered flow of the heavy phase downward and the light phase dropwise upward in the extraction tube, has the advantages of high-throughput, high automation, high extraction efficiency, compact structure, good reproducibility and the like, and is suitable for efficient enrichment and separation of trace components in complex samples such as food, environment, medicine and biological detection.

This invention discloses an amino-containing bidentate ligand, its preparation method, and its application, belonging to the field of hydrometallurgical technology. The amino-containing bidentate ligand provided by this invention has a connected pyridine ring and a pyrazole ring, with an R group attached to the pyrazole ring; wherein the pyridine ring and the R group are located at the meta position of the pyrazole ring and are both connected to a C atom. Because the amino-containing bidentate ligand provided by this invention has a protonated amino group vacated, the organic phase obtained when combined with an extractant can solve the technical problems of low organic phase extraction capacity, low nickel-cobalt selectivity and priority, and short organic phase life in traditional solvent extraction and separation of nickel and cobalt. This invention also provides a preparation method and application of the above-mentioned bidentate ligand.

A separation system for separating constituents from a solution by utilizing a carrier gas and a separation method thereof are disclosed. The separation system includes an evaporator, a solution distribution unit connected to the evaporator for distributing the solution into the evaporator, and a gas distribution unit connected to the evaporator for distributing the carrier gas into the evaporator. The solution is countercurrent to the carrier gas and upon contact, at least one constituent of the solution is vaporized and separated from the solution.

The present application relates to the technical field of traditional Chinese medicine production and processing, and particularly relates to a traditional Chinese medicine alcohol precipitation treatment device. The present application provides a traditional Chinese medicine alcohol precipitation treatment device capable of shunting treatment and continuously stirring and mixing to improve treatment efficiency. The traditional Chinese medicine alcohol precipitation treatment device comprises a mounting frame, a stirring tank, a driving motor, a stirring rod, a precipitation mechanism and a shunting mechanism. The mounting frame is connected with the stirring tank at the front portion. The stirring tank is connected with the driving motor at the top portion. The stirring rod is arranged on the output shaft of the driving motor. The mounting frame is provided with the precipitation mechanism. The shunting mechanism is arranged on the precipitation mechanism. The present application can improve the efficiency of alcohol precipitation reaction by using a water pump to shunt and guide the stirred traditional Chinese medicine decoction into multiple alcohol precipitation tanks for standing and alcohol precipitation separation, so that a large amount of traditional Chinese medicine decoction can be separated by alcohol precipitation at one time.

Disclosed is a method for separating one or more target species from a first solvent phase. This method involves passing a first solvent phase containing one or more target species, and a first portion of a second solvent phase, through a first set of one or more columns containing a discontinuous packing medium. The first and second solvent phases are immiscible with respect to each other, and the flows of the first and second solvent phases are parallel. The first and second solvent phases are made to come into contact with each other, thereby enabling the extraction of one or more target species from the first solvent phase to the second solvent phase. Also disclosed is a system for carrying out the method disclosed herein.