233results about "Counter-current extraction" patented technology

A biomass hydrothermal decomposition apparatus includes, a biomass feeder (31) that feeds biomass material (11) under normal pressure to under increased pressure, a hydrothermal decomposition device (41A) that allows the fed biomass material (11) to be gradually moved inside a gradient device main body (42) from a lower end thereof with a conveyor screw (43), and also allows hot compressed water (15) to be fed from an other end of a feed section (31) for the biomass material into the main body (42), so as to cause the biomass material (11) and the hot compressed water (15) to countercurrently contact with each other and undergo hydrothermal decomposition, and that transfers a lignin component and a hemicellulose component into the hot compressed water, so as to separate the lignin component and the hemicellulose component from the biomass material (11); and a biomass discharger (51) that discharges, from the upper end of the device main body (42), a biomass solid residue (17) under increased pressure to an under normal pressure.

The present invention provides a method for extracting cannabidiol, and belongs to the technical field of industrial extraction. The method comprises the following operation steps of drying the flowers and leaves of a mariguana plant, grinding and crushing, performing reverse extracting on the crushed coarse powder and a solvent in a reverse extracting device along the opposite directions, and enabling the solvent to extract the effective components of the coarse powder out of an extracting solution; performing pressure-relief heating on the extracting solution, and volatilizing the excessiveethanol in the extracting solution, so as to obtain a concentrated solution of cannabidiol; adding purified water into the concentrated solution of cannabidiol, diluting, eluting by a chromatography column in a gradient way, and collecting a target eluting solution; combining the target eluting solution, and performing pressure-relief concentrating at the temperature of 50 to 70 DEG C, so as to obtain a secondary concentrated solution of cannabidiol; adding 90%w/w ethanol over-saturated solution into the secondary concentrated solution of cannabidiol, obtaining a crystallized product, washingby the purified water, and drying, so as to obtain a cannabidiol product. The method has the advantages that the method can be applied to large-scale continuous production; the working is continuous without interruption; the output is high; the energy source is saved; the safety and reliability are realized.

Hydrogen peroxide produced in an auto-oxidation process is recovered from H₂O₂-containing organic solution via liquid-liquid extraction with an aqueous medium in a device having elongated channels, with a small cross-sectional dimension, that facilitate efficient extraction of aqueous hydrogen peroxide from the organic solution.

The invention discloses a low-efficiency and low-consumption water seal lithium ion battery film extraction process and belongs to the field of battery film wet-method preparation extraction. According to the process, a battery film is extracted in extraction equipment filled with an extraction agent; the extraction equipment comprises an extraction tank which is filled with the extraction agent and is sealed, a guide roller which is arranged inside the extraction tank and is used for conveying the film, and extraction agent heating devices; the film is submerged into the extraction agent; a water seal layer is further arranged on the upper layer of the extraction agent; a group of partition plates which are arranged high and low in a staggered manner are arranged inside the extraction tank; the partition plates inside the extraction tank form a snake-shaped extraction agent flowing channel; the heating devices are arranged on the partition plates; multi-stage counter flow extraction is implemented; the flowing direction of the extraction agent is opposite to the conveying direction of the film; the extraction agent is continuously conveyed into the extraction tank; the concentration of the extraction agent is greater than 99.5%; the liquid feeding amount is (2-5)*10<5>*(v<2>*W/L)m<3>/h; W represents the width of the film and has the unit of m; L represents the extraction length and has the unit of m; v represents the speed of the film and has the unit of m/h. By adopting the process, the extraction temperature of the extraction agent can be increased, and the extraction activity can be greatly improved.

The invention belongs to the technical field of traditional Chinese medicine extraction, and particularly relates to a method for extracting levodopa from mucuna pruriens by a continuous countercurrent ultrasonic technique. The method comprises carrying out extraction on mucuna pruriens medicinal materials by adopting the continuous countercurrent ultrasonic method, carrying out filtering by an acid membrane, and carrying out recrystallization to obtain a levodopa crystal. Through detection, the purity of the levodopa product obtained by adopting the method is 99% or above, and the yield is 5.0% or above. And meanwhile, the protein in the mucuna pruriens dregs can be extracted by using alkali liquor. According to the method provided by the invention, levodopa can be rapidly and efficientlyextracted from the mucuna pruriens in a large scale, and after the filtering, the filtrate directly flows back and is used as an extraction liquid for recycling. The product has a short production period, low energy consumption and less environmental pollution.

A liquid-liquid extraction unit includes an extraction/separation tank (10) into which an aqueous phase in bubble form is admitted from an upper inlet (20) in one sidewall and an organic phase in bubble form is admitted from a lower inlet (30) in the one sidewall. The upward moving organic phase is contacted with the downward moving aqueous phase. After contact, the organic phase is discharged through an upper outlet (40) in an opposite sidewall and the aqueous phase is discharged through a lower outlet (50) in the opposite sidewall.

The invention discloses a continuous countercurrent extraction process of 1,5-pentamethylene diamine static mixer and a liquid-liquid cyclone separator, and also provides special equipment for the process. The special equipment comprises a pipeline, the static mixer, the liquid-liquid cyclone separator, and is characterized in that the static mixer is used in a form of a vertical pipe heat exchanger, while the liquid-liquid cyclone separator is arranged in a same tower to accelerate separation of an organic phase and a water phase, and each tower body is equipped with an organic phase metering pump and an enzyme conversion liquid metering pump; a numerical control valve is arranged on the pipeline; a temperature probe is arranged on each tower body. The signal output ends of each probe and each numerical control valve are connected with a computer control system. The process is simple, and easy to operate, the extraction processing is difficultly influenced by an insoluble matter, and the product extraction rate is high. The equipment is simple in structure, low in construction cost, and convenient to repair.

The invention discloses a method for extracting citric acidby employinga centrifugal extractor. The centrifugal extractor comprises an extraction section, a washing section and a re-extraction section. After the efficient centrifugal extractor is applied to the extraction method of citric acid, the two-phase separation efficiency is obviously improved, and meanwhile emulsion phenomenon in the traditional technology is obviously improved; in addition, in the technical condition, wastes are hardly produced in the re-extraction section; the equipment is small in floor space, and the stage efficiency is further obviously improved; as the novel and efficient centrifugal extractor adopts totally sealed equipment, the sharp flavor of an extraction agenthardly exists in an operation site, the operating environment is greatly improved, and the health hazard of operating personnel during production is eliminated.

The invention relates to the technical field of plant material extraction, in particular to a novel rotational hanging basket type continuous dynamic reflux phytoextraction system. The system comprises extraction pot group equipment, a hanging basket group and an electric steam heating water pot, wherein the extraction pot group equipment is provided with multiple extraction pots which are circumferentially distributed, communicating overflow ports are arranged among the extraction pots, each extraction pot is provided with a circulating pump, the hanging basket group is provided with a plurality of hanging baskets, which are controlled by a lifting and rotating mechanism to feed a material towards the extraction pots in order in a rotating mode, and the electric steam heating water pot isprovided with a liquid conveying pipe and a liquid delivery pump. By the system, the problems of low efficiency, long time consumption, large occupation of land and the like in a traditional extraction process are solved, in the extraction process, the whole extraction process is more stable, the phenomena of coking, wall adhering, blocking and the like can be effectively prevented from happeningin the operation processes of evaporation, concentration, spray drying and the like, subsequent filtration steps are reduced, the requirement on subsequent filtration is lowered, and good raw materials are provided for subsequent processes such as evaporation, concentration and drying.

The invention relates to a method for obtaining wolfberry fruit extract through multistage countercurrent extraction by adopting a centrifugal extractor. The method comprises the following steps of: a pre-treatment step, namely drying maca roots and stems under the condition of 78 DEG C to 80 DEG C, and crushing the dried maca roots and stems by utilizing a traditional Chinese medicine crusher until the granularity is 60-80 meshes; sieving, drying, roasting by a pyrogenic process, and cooling to room temperature; an extraction step, namely putting a petroleum ether solvent and an ethanol solvent, and the pre-treated crushed maca roots and stems into a continuous countercurrent centrifugal extractor; vacuumizing the continuous countercurrent centrifugal extractor, wherein the solvent-material ratio is (1 to 1.5) to 1, the temperature is 10 DEG C to 50 DEG C and the extraction pressure is saturated steam pressure of a used solvent under the corresponding temperature; then stirring and introducing ultrasonic waves, wherein the extraction time is 1.5h to 3h; filtering and separating solid and liquid phases; and conveying a liquid-phase mixed solution into a temporary storage kettle tank so as to finish one time of immersing and extracting. The production process of the wolfberry fruit extract is simple to operate; the wolfberry fruit extract is sweet and soft, the comfort is improved and the sweet taste is relatively natural; the extraction efficiency is high, the production cost is low and the practicability is very high.

The invention relates to an overflow device for wet lithium ion battery separator extraction equipment. The overflow device comprises a flow guiding part and a flow resisting part, wherein the flow guiding part comprises an extraction agent overflow pipe and two overflow tanks; the flow resisting part comprises an overflow tank flow resisting plate and an extraction tank dividing baffle plate; theextraction agent overflow pipe is located on the driving side of an extraction tank and used for communicating extraction agents of two adjacent extraction tanks; the extraction tank dividing baffleplate is located in the middle of the extraction tank; the two overflow tanks are located on the driving side and the operating side of the extraction tank respectively, tightly attached to the wall of the extraction tank and lower than the extraction tank dividing baffle plate by certain distance; the overflow tank flow resisting plate is located in the middle of the overflow tank located on thedriving side. With the adoption of the overflow device, flowing travel of the extraction agent in single extraction tank is substantially increased, backmixing of the extraction agents with differentconcentrations in the front position and the back position in an original tank is reduced, and the extraction efficiency is remarkably improved.

The invention discloses a two-aqueous-phase membrane extraction method and device and belongs to the technical field of extraction and separation. Two-aqueous-phase extraction and membrane separation are organically combined, and the liquid phase and the extract phase of the two aqueous phases flow on the two sides of a membrane respectively; the liquid phase is an aqueous solution which contains target metal ions; the extract phase is a polymer phase or a polymer loaded with a coordination agent; the target ions enter the polymer phase through membrane holes. Through the two-aqueous-phase membrane extraction method and device, addition of inorganic salt and subsequent salt recovery are eliminated, the problem that the two aqueous phases are prone to emulsification is solved, it is avoided that loss is caused by mixing and dissolving of the polymer phase and the liquid phase, and the method is a simple, efficient and environment-friendly process method with low energy consumption and has the advantages that the occupied area is small, running is stable, and large-scale production is easy.

The invention discloses a continuous countercurrent supercritical extraction apparatus, comprising an extraction kettle, a separation kettle and a gas cylinder, wherein the extraction kettle is communicated with the separation kettle via a first pipeline; the first pipeline is provided with a first heat exchanger; the bottom of the extraction kettle is provided with a gas inlet; the gas inlet is communicated with the gas cylinder via a second pipeline; the extraction kettle is provided with a raw material inlet; a spraying device is arranged at the raw material inlet; and the separation kettle is connected with the gas inlet via a third pipeline. The continuous countercurrent supercritical extraction apparatus provided by the invention is not shut down for addition of raw materials in the whole process of extraction and separation, cyclically utilizes CO2, avoids loss of CO2 and improves extraction and separation efficiency.

This disclosure describes systems, methods, and apparatus for counter-current solids leaching. A multi-stage countercurrent leaching chamber can include a top and bottom end, a barren liquor input, two or more regions for countercurrent mixing, and a barren solids output. The input can be configured to receive barren liquor. The two or more regions for countercurrent mixing and separation can be configured to mix and separate liquid and solid phases. The barren solids output can be configured to collect and discharge barren solids from the bottom end of the multi-stage countercurrent leaching chamber. A fluidized bed chamber and clarifier chamber can also be included, where the fluidized bed receives a fluidizable slurry of pregnant solids and the clarifier chamber aids in separating liquids from solids passing from a top of the fluidized bed chamber to the top end of the multi-stage countercurrent leaching chamber.

The invention relates to a secondary counter-current extraction device and method, belongs to the technical field of secondary counter-current extraction of a reducing solution and provides a secondary counter-current extraction device and method which are capable of reducing extraction water consumption and reducing steam consumption. The device comprises a reducing solution storage tank, a soft water storage tank, a primary mixer, a secondary mixer, a primary extraction tank, a secondary extraction tank, an inorganic phase storage tank, an organic phase storage tank and the like, wherein the reducing solution and soft water after cooling are subjected to primary mixing with a secondary extraction water phase through the primary mixer, a primary mixed liquid enters the primary extraction tank for split-phase extraction, a primary extraction water phase extracted from the tank top enters the inorganic phase storage tank, a primary extraction oil phase extracted from the tank bottom is subjected to secondary mixing with the cooled soft water through the secondary mixer, a secondary mixed liquid enters the secondary extraction tank for split-phase extraction, a secondary extraction water phase extracted from the tank top enters the primary mixer, and a secondary extraction oil phase extracted from the tank bottom enters the organic phase storage tank. The secondary counter-current extraction device and method are mainly applied to the liquid extraction.

The invention relates to a continuous countercurrent extraction device for traditional Chinese medicine. The continuous countercurrent extraction device comprises an extraction tank provided with a feeding port, and further comprises outer cam supporting tubes, outer cams, slagging doors, a rotary receiving tank, a central support, a rotating shaft, a motor, an extracting solution spray pipe and an extracting solution collecting tray which are arranged in the extraction tank, wherein the rotary receiving tank is mounted on the rotating shaft in a sleeving manner, and two ends of the rotating shaft are rotationally connected with the top of the extraction tank and the central support respectively; multiple receiving cavities are formed in the circumferential direction of the rotary receiving tank, the bottoms of the multiple receiving cavities are hinged with one side of one slagging door provided with meshes, the two annular outer cam supporting tubes are arranged in the circumferential direction in the extraction tank, the outer cams are arranged on the corresponding outer cam supporting tubes, and the other side of the slagging door is in sliding fit with the outer cams; the extracting solution collecting tray is arranged below the rotary receiving cavities and is provided with a slagging groove and multiple solution receiving grooves in the circumferential direction. The continuous countercurrent extraction device for the traditional Chinese medicine is high in extraction efficiency and the loss of an extracting solution is low.

The present invention relates to a counter-current extraction process involving a plurality of mixing and separation stages for fractionating a phospholipid-containing feed material into two or more fractions enriched in one or more phospholipids, comprising (a) contacting the phospholipid-containing starting material under agitation with an extractant comprising an aliphatic alcohol selected from C1 to C3 alcohols; (b) separating the obtained emulsion into a phospholipid-enriched extract from a residual raffinate.

The invention discloses a counter-rotating drum type huperzine A leaching device with a cleaning machine and a drying machine. The bubble cleaning machine is sequentially connected with a Melaleuca tower conveyor, a shredder and a body. Rotating rollers, counter-rotating rollers are cylindrical, each stage of counter-rotating rollers is equipped with a Melaleuca tower guide groove, the last stage guide groove is connected to the hopper of the Melaleuca tower hoist, and the discharge chute of the hoist is passed through the spiral The squeeze dehydrator and the slag hopper are connected to the dryer; there is a liquid inlet valve on the elevator, a filter and a liquid outlet pipe on the upper part of the body; a spline curve rubber disc pulse explosion device is installed in the body, and a mechanical The ultrasonic exciter, the three-stage counter-rotating roller, the spline curve rubber disk pulse explosion device and the mechanical ultrasonic exciter of the present invention all have distinctive features, and can synergistically promote the leaching and extraction of huperzine A. The working principles and technical effects that are difficult for personnel to predict have strong practical application value.

The invention discloses a counter-rotating roller type huperzine A leaching device with a feeder and a squeeze dehydrator. A feeder is arranged above the body, and three stages of counter-rotating rollers are arranged inside the body. Melaleuca tower guide grooves are provided under the counter-rotating rollers, the last level of guide grooves is connected to the hopper of the Melaleuca tower hoist, and the discharge chute of the hoist is connected to the screw extrusion dehydrator; the hoist is equipped with a liquid inlet valve, and the machine body The upper part is provided with a filter and a liquid outlet pipe. The liquid outlet pipe is connected to the duplex filter through the filter liquid inlet valve. The duplex filter passes through the first filtrate pipe, the filtrate valve, the filtrate pump, the pump outlet valve, the second filtrate pipe and the The liquid storage tank is connected; the body is provided with a spline curve rubber disc pulse explosion device, and the lower left corner of the body is provided with a mechanical ultrasonic vibrator, the three-stage counter-rotating roller of the present invention, the spline curve rubber disc pulse explosion device and Mechanical ultrasonic exciters have distinctive features, can synergistically promote the leaching and extraction of huperzine A, and have strong practical application value.

The invention discloses a device and method for ultrahigh-temperature continuous countercurrent industrial extraction of licorice root, and relates to the field of medicinal chemical industry. The ultrahigh-temperature continuous countercurrent industrial extraction is realized by connecting a plurality of extraction tanks (1) in series, and licorice root (17) in the extraction tanks undergoes high-temperature extraction, so the concentration of licorice root extract is increased, the extraction efficiency is significantly improved, and the water consumption is saved; and the overturning of the extraction tanks is realized by overturning a driving mechanism, so residues in the extraction tanks can be easily removed, the production efficiency is improved, good economic benefits are broughtfor enterprises, and the device and the method are suitable for large-scale promotion and application.