50results about "Co-current extraction" patented technology

The disclosure includes a method, comprising passing a fluid into a co-current contactor, passing a solvent into the co-current contactor, dividing the solvent into solvent droplets having a first average droplet size, placing the fluid in contact with the solvent droplets to create a combined stream, coalescing at least a portion of the solvent droplets to create solvent droplets having a second average droplet size, wherein the second average droplet size is greater than the first average droplet size, and separating the fluid and the solvent.

In an improved fiber-film type contactor / separator an enhanced coalescing zone is provided by the presence of a disengagement device connected to a shroud that contains a bundle of high surface area vertical hanging fibers, where the enhanced coalescing zone diverts a portion of an admixture of immiscible liquids to flow radially in a path not parallel to the vertical axis of the hanging fibers whereby the diverted portion of liquids contacts a coalescing surface to cause at least one of the liquids to coalesce into droplets. The immiscible liquids are allowed to settle into separate phase layers and first and second outlets selectively remove the higher density liquid from the lower density liquid.

Methods treat ash from waste incineration, wherein the methods at least comprise: a) the digestion of the ash by a leaching liquor containing phosphate ions in solution such as to form a first solid phase comprising impurities and a first liquid phase comprising phosphate ions; and b) the separation of said first liquid phase comprising phosphate ions from said first solid phase. Step a) is carried out for a duration of less than one hour or at a temperature of more than 40° C.

The invention relates to a traditional Chinese medicine extraction apparatus. The traditional Chinese medicine extraction apparatus comprises a rectifying tank and an upper end enclosure, wherein a filter screen is arranged in the rectifying tank, the bottom of the rectifying tank is provided with an extraction opening, a cavity is arranged inside the rectifying tank, the top of the cavity is connected with a gas inlet pipe B, the bottom of the cavity is connected with a gas outlet pipe, the gas inlet pipe B and the gas outlet pipe are respectively connected with a gas outlet and a water inletof a steam machine, the upper end enclosure is provided with a motor and a pressure gauge, an output shaft of the motor is connected with a rotating shaft, the outer side of the rotating shaft is provided with a stirring paddle, the upper end enclosure is connected with a gas inlet pipe A, a rectifying pipe and a liquid inlet pipe, the gas inlet pipe A is provided with a flow gauge A, the gas inlet pipe A is connected with a CO2 generator, the junction of the rectifying pipe and the upper end enclosure is provided with a rectifying valve, the rectifying pipe is connected with an extraction tank, the junction of the liquid inlet pipe and the upper end enclosure is provided with a liquid inlet valve, the liquid inlet pipe is provided with a flow gauge B, and the liquid inlet pipe is connected with a storage tank. The traditional Chinese medicine extraction apparatus has the advantages of high extraction efficiency, resource conservation and controllable process.

A system is provided for removing dimethyl ether (DME) from oil, water or brine and gas that includes a gas-oil-water separation module, a DME absorber, a water stripper, a liquid-liquid extractor, a water source, and an oil stripper, and a process is provided for separating DME from a mixture of DME, crude oil, water or brine, and a gas containing alkane hydrocarbons. A DME lean oil containing at most 1 ppmwt may be produced by the process.

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 an efficient plant extraction device for cosmetics. According to the invention, a grinding barrel is arranged on and penetrates through the top end of a plant feeding pipe; a transmission rod is arranged on and penetrates through the top end of the grinding barrel; a transmission speed regulating wheel is connected to the top end of the grinding barrel; the transmission speed regulating wheel and a driven speed regulating wheel are connected through a belt; clamping rings are symmetrically welded to the side ends of the transmission rod; cutting fan blades are embedded into the inner sides of the clamping and fixing grooves; a grinding gear is welded to the side end of the transmission rod; a grinding gear ring is welded to the inner side of the grinding barrel; and flushing water inlet pipes penetrate through the two ends of the grinding barrel. A cutting speed and ta e grinding speed are changed through the transmission speed regulating wheel and the driven speed regulating wheel, so the device can be quickly switched when different types of plants need to be handled, and the situation that the plants are damaged or the plants are not sufficiently ground due to a fixed grinding speed is avoided; and meanwhile, the height of a protection cover is adjusted, so a cutting device is conveniently adjusted according to the specific conditions of the plants.

The invention discloses a high-flux liquid-liquid extraction microfluidic device and an extraction method thereof. The high-flux liquid-liquid extraction microfluidic device comprises a water phase inlet liquid collecting cavity, an oil phase inlet liquid collecting cavity, a water phase outlet liquid collecting cavity, an oil phase outlet liquid collecting cavity, a water phase inlet micro-channel, an oil phase inlet micro-channel, a contact extraction micro-channel, a water phase outlet micro-channel and an oil phase outlet micro-channel; the water phase inlet micro-channel and the oil-phaseinlet micro-channel are connected with one end of the contact extraction micro-channel, and the other end of the contact extraction micro-channel is connected with the water phase outlet micro-channel and the oil phase outlet micro-channel; and the other ends of the water phase inlet micro-channel, the oil phase inlet micro-channel, the water phase outlet micro-channel and the oil phase outlet micro-channel are respectively connected with the water phase inlet liquid collecting cavity, the oil phase inlet liquid collecting cavity, the water phase outlet liquid collecting cavity and the oil phase outlet liquid collecting cavity. The extraction method of the high-flux liquid-liquid extraction microfluidic device comprises co-extraction and reverse extraction. By using the high-flux liquid-liquid extraction microfluidic device and the extraction method thereof, a sample solution and an extractant can be continuously introduced and stably conveyed, the fluid contact area and the extraction efficiency are increased, and the high-flux liquid-liquid extraction microfluidic device and the extraction method thereof are suitable for extracting a plurality of metal ions.

The invention discloses a citrus mitis essential oil with bacteria-inhibiting activity. The citrus mitis essential oil is respectively prepared by leaves, green peels or yellow peels of citrus mitis. The citrus mitis essential oil is prepared by the following steps of 1, collecting the leaves, green peels or yellow peels of citrus mitis, and respectively crushing; 2, under the conditions of material and liquid ratio of 1 / 5 to 1 / 3 and distilling time of 50 to 70mins, using a water steam distilling method to respectively extract citrus mitis leaf essential oil, citrus mitis green peel essential oil or citrus mitis yellow peel essential oil. The citrus mitis essential oil has the advantages that the citrus mitis essential oil is developed and applied as a natural plant bacteria-inhibiting agent; the extracting technology is simple, the other additives or components are not contained, the safety, efficiency, non-poisonous, green and environment-friendly effects and the like are realized.

The invention discloses an efficient rectification device and method for high-purity nicotine, and particularly relates to the technical field of nicotine extraction. The efficient rectification device is provided with a rectification equipment body, a falling film evaporation equipment body, a connecting pump, a steam generation assembly, a condensation equipment body, a first steam pipe, a second steam pipe, a third steam pipe and a backflow pipe; heat in the steam with slightly reduced temperature heats and evaporates the raw material in a connecting hole through a falling film heating barrel, the raw material is concentrated, low-boiling-point impurities in the raw material are cleaned, the concentrated raw material enters the rectification equipment main body through the connecting pump, and the concentrated raw material is in contact with the high-temperature steam for nicotine extraction; according to the method, low-boiling-point impurities are removed while the raw material is concentrated, high-boiling-point impurities are removed while rectification is carried out, it is guaranteed that the purity in the nicotine extraction process is 99.9% or above, meanwhile, steam heat is adopted for preheating the raw materials, the heating time of the raw materials in the rectification process is shortened, and the efficiency of the method is more ideal.

The invention discloses a supercritical extraction separation kettle, an extraction system and an extraction method. The supercritical extraction separation kettle comprises a kettle body and a top cover, and further comprises an annular extraction layer, an annular porous medium layer and a cyclone separator which are sequentially arranged in the kettle body in a sleeved mode from outside to inside. On one hand, such an annular layered structure enables an extraction agent to complete extraction in an internal rotation flowing mode, so a contact area between the extraction agent and an objectto be extracted in the flowing process of the extraction agent is increased, and extraction yield is greatly increased; on the other hand, the space utilization rate in the extraction kettle is increased, and the common wall flow problem in the supercritical extraction process is avoided; meanwhile, a flow field in the extraction separation kettle is more uniform and stable by designing the orientation of air inlet holes and arranging an arc-shaped flow guiding plate. The supercritical extraction separation kettle of the invention has three functions including extraction, pressure reduction,and separation and purification, and can realize high-quality and high-efficiency bioactive component extraction and cyclic reutilization of the extraction agent.

The invention discloses a dynamic and continuous atomizing extraction method. The method comprises the following steps: preheating a plant extract to 15 DEG C to 60 DEG C, then dispersing the preheated plant extract into mist-like liquid drops under the condition of a pressure of 0.1 MPa to 20 MPa, then continuously spraying the mist-like liquid drops into an extraction tank, continuously adding a solvent into the extraction tank in a manner of reverse flow or parallel flow at the same time, allowing the solvent and the plant extract dispersed into the mist-like liquid drops in the extraction tank to completely contact and carrying out atomizing extraction, and allowing an obtained extraction phase and a raffinate phase to continuously outflow from the extraction tank. The dynamic and continuous atomizing extraction method provided by the invention has the following advantages: operation is convenient; the usage amount of the solvent is small; meanwhile, continuous instantaneous extraction and thorough extraction effect can be realized; the recovery rate of effective components in the plant extract can reach up to 95% or above; extraction efficiency is high; and the method is suitable for industrial production.

An extraction and separation method separating a specific component from a raw material fluid using an extraction device including plural stages of extraction units connected sequentially. The extraction and separation method includes: extracting the specific component into an extraction solvent having a difference in specific gravity with respect to that raw material fluid from the raw material fluid while causing the raw material fluid and the extraction solvent to flow in a state of contact with each other in the extraction units for each stage; introducing at least part of the fluid discharged from an extraction unit to the next stage extraction unit in a state wherein the raw material fluid and the extraction solvent are mixed; and a final separation separating the raw material fluid, after the specific component has been extracted in the fluid discharged from the extraction unit in a final stage, and the extraction solvent that has extracted the specific component.

The invention discloses an experimental method for desulfurizing and deashing coal by utilizing the permeation and dissolution capacity of supercritical fluid, and relates to the field of desulfurization before coal combustion. With a supercritical fluid technology as a core process, and mainly, through adjustment of the temperature and the pressure, the solubility of a solute in supercritical CO2is related to the density of the supercritical CO2; the temperature and the pressure jointly determine the density of CO2, the CO2 has special capacity in the supercritical state by changing the temperature and pressure conditions, organic sulfur in the coal is removed through selective dissolution and separation, and the effect of greatly reducing ash is further achieved while the organic sulfuris effectively reduced. The whole technological process is simple, convenient to operate, capable of easily achieving temperature and pressure control and suitable for large-scale industrialization;meanwhile, CO2 is non-toxic and pollution-free to the raw materials and has no influence on the coal quality; the desulfurization rate comprises that organic sulfur can be removed by 23%, inorganic sulfur can be removed by 70%, and the ash content is reduced by 32%.

The invention discloses a novel extraction method for coix seeds. The method comprises the following steps: enabling enzymatic hydrolysate to flow into a membrane separation system along a spiral or folded path for membrane separation; carrying out spray drying on trapped fluid separated by the membrane separation system, carrying out heat exchange on waste gas generated by spray drying and enzymatic hydrolysate passing through the spiral or folded path, and then spraying the waste gas to a rotating mechanism to drive an atomizing nozzle to rotate; and allowing two groups of filtering membranes in the same membrane separator to conduct alternate separating on the enzymatic hydrolysate, and guaranteeing that the enzymatic hydrolysate separated by other membrane separators except a membrane separator located at the termination position is transferred out of the membrane separators, trapped fluid obtained after separation of the membrane separator located at the termination position is transferred out of the membrane separator located at the termination position and the enzymatic hydrolysate is temporarily stored in a corresponding transfer cavity during switching of two groups of filtering membranes in the same membrane separator. The invention further discloses a coix seed extraction system. The coix seed extraction process has the advantages that overall continuity is high, production efficiency is improved, and an energy utilization rate is increased.

The invention discloses a method for continuous countercurrent extraction of long-chain fatty alcohol in an alkyl glycoside crude product, and belongs to the technical field of light chemical daily necessity separation. According to the invention, with the method, a supercritical CO2 extraction technology can be realized, continuous countercurrent extraction on long-chain fatty alcohol in an alkylglycoside crude product can be achieved, the purpose of high-precision purification is achieved, extraction is mild in regulation and free of pollution, the extraction capability and the extraction rate are high, and the extraction time is short, so that the method is an environmentally-friendly separation and purification technology; CO2 can be continuously separated without speed reduction under the cooperation of a co-current adsorption assembly, and long-chain fatty alcohol entrained in CO2 gas can be actively adsorbed under the condition of maintaining temperature and air pressure, so that the CO2 separation effect is further improved, and the high extraction effect is kept when CO2 is recycled; and the co-current adsorption assembly can also desorb and recover long-chain fatty alcohol after extraction is finished so as to substantially improve the extraction rate of the long-chain fatty alcohol compared with the prior art, and the co-current adsorption assembly can be repeatedlyused after desorption treatment.

The invention relates to a carbon dioxide high-pressure extraction decalcification process for fly ash, which comprises the following steps: 1, washing fly ash with water to prepare slurry, and carrying out suction filtration on the prepared slurry to obtain water washing liquid and solid slag; 2, washing the solid residues with water to prepare slurry, converting calcium contained in the solid residues into calcium bicarbonate by adopting carbon dioxide high-pressure extraction, and dissolving the calcium bicarbonate in water; 3, performing suction filtration on the slurry subjected to carbon dioxide high-pressure extraction to obtain residual solid residues and water washing liquid, and decomposing calcium bicarbonate in the water washing liquid at normal temperature and normal pressure to generate calcium carbonate; and 4, calcining the calcium carbonate obtained in the step 3 to obtain quick lime and carbon dioxide gas, wherein the carbon dioxide gas is reused in the carbon dioxide high-pressure extraction stage in the step 2. According to the method, calcium carbonate is separated from solid residues obtained after fly ash washing in a carbon dioxide high-pressure extraction mode, the method is more convenient than a cement kiln synergistic process, and carbon dioxide can be recycled for fly ash washing and carbon dioxide high-pressure extraction stages through calcium carbonate calcination.

The invention belongs to the coal desulfurization field, relates to a desulfurization method combining chemical bond breakage rearrangement with organic reaction, and concretely relates to a method for removing organic sulfur in coal. The purpose of the invention is to solve the problems in the background technology. The method comprises the following steps: carrying out a steam explosion reactionon a coal sample, adding the coal sample subjected to steam explosion into an extraction kettle to reacte with a supercritical fluid system, vacuumizing a reactor before the reaction, forming a system with strong polarity, good reaction activity and high selectivity through supercritical fluid matching in order to remove the organic sulfur in the coal, collecting the reacted sample, and then detecting and analyzing the collected reacted sample. The method enhances the extraction mass transfer effect along with a micro-pyrolysis reaction, so macromolecular pyrolysis, micromolecular extractionand desulfurization effects are obvious; and the influences on the bonding performances of the coal before and after the reaction are little, and only sulfur-containing substances are effectively removed, so the safe and environmentally-friendly solvent is simple to select, the reaction mechanism is clear, and the cost of the organic solvent is reduced.

The invention discloses an automatic control device for extractive distillation, and in particular relates to a volatile component distillation automatic control device. The device comprises an extraction tank (1), bottom cover (2), feeding port (3), a material pipeline A (4), a condenser A (5), a condensed water inlet A (7), a condensed water outlet A (6), a condenser X (8), an oil-water separator X (9), an exhaust port X (12), a condensed water inlet X (24), a condensed water outlet X (23), a condenser Y (10), an oil-water separator Y(11), an exhaust port Y(13), a condensed water inlet Y(22), a condensate water outlet Y(21), an oil-water separator Z(14), a condensate water inlet Z(26), a condensate water outlet Z(25), an oil collecting tank(27), a controller(28), a material pipeline B(20), a valve(15), a valve(16), a valve(17), a valve(18) and a valve(19). The automatic control device has the advantages of simple structure and convenient operation, obviously reduces the consumption of condensed water and improves the collection rate of volatile components.

The invention discloses a method for extracting soluble dietary fiber in soy sauce residues by a supercritical CO2 system assisted enzyme-ultrasonic technique. The method comprises the steps as follows: performing drying, crushing and desalination pretreatment on soy sauce residues; extracting grease from the pretreated soy sauce residues by a supercritical CO2 device; carrying out ultrasonic treatment on the degreased soy sauce residues by an ultrasonic cell disruptor; and adding cellulase to the soy sauce residues after ultrasonic treatment for enzymolysis, performing evaporation concentration on an enzymatic hydrolysate, adding absolute ethyl alcohol for precipitation, and carrying out filtration and drying to obtain a precipitate, namely, the soluble dietary fiber. Degreasing treatmentis performed by the supercritical CO2 device, extraction is performed by assisted enzyme-ultrasonic technique, mixing of organic reagents is effectively prevented, the obtained product is not affected by chemical reagents, the degreasing rate is high, exacted grease can also be used for producing biodiesel, and soy sauce residues after extraction of the soluble dietary fiber can be used for preparing protein feed. The whole process has the advantages of being simple in process, environmentally friendly and capable of realizing high-value utilization of the soy sauce residues.

The invention relates to a cosmetic preparation raw material extraction method mainly comprising the following steps: equipment inspection, material preparation, distillation extrusion and material collection; the cosmetic raw material extraction equipment comprises a mounting rack, a distillation suite and a collection suite; the distillation suite and the collection suite are sequentially arranged in the mounting rack from bottom to top; the method can solve the following problems existing in the extraction of an existing skin care product plant essence: a, when the existing plant essence is extracted, the plant self secretes juice through distillation, the secretion speed is low, and the production speed is slow; and b, when the existing plant essence is distilled, the juice extraction efficiency is relatively low due to non-uniform heating of plants, so that the production efficiency is greatly slowed down.

The invention relates to a spiral efficient sulfur extraction device and an extraction method thereof. The device comprises an extraction tank, a first feeding hole, a second feeding hole, a dissolving tank and a liquid outlet, wherein the extraction tank is of a closed cavity structure; the dissolving tank is spirally and uniformly distributed around the axis of the extraction tank from top to bottom along the axis of the extraction tank; the upper end surface of the dissolving tank is communicated with the first feeding hole and the second feeding hole; the lower end surface of the dissolving tank is communicated with the liquid outlet; the first feeding hole is perpendicular to the upper end face of the extraction tank; the liquid outlet is formed in the bottom of the side wall of the extraction tank; the axis of the liquid outlet is perpendicular to the axis of the extraction tank; the axes of the first feeding hole and the liquid outlet intersect with the axis of the dissolving tank respectively; and the second feeding hole is formed in the upper end face of the extraction tank and is symmetrical with the first feeding hole about the axis of the extraction tank. According to the invention, the processing requirement of high-efficiency extraction operation on liquid sulfur can be effectively met, and the operation efficiency of separation between an extract and a master batch is improved, so the processing efficiency and quality of liquid sulfur extraction operation can be effectively improved while the equipment operation and maintenance cost and the liquid sulfur extraction operation cost are reduced.

The invention discloses a supercritical fluid extraction system and extraction method, wherein the supercritical fluid extraction system comprises a fluid supply device, a pressurizing device, a heating device, a primary extraction device, a collecting device and an ultrasonic extraction device; the fluid supply device is at least provided with a fluid storage tank and a circulating cooling tank communicating with the fluid storage tank through a pipeline; the pressurizing device is at least provided with a pressurizing pump; the heating device is at least provided with a first heat exchanger;the primary extraction device is at least provided with an extraction tank, and the extraction tank is connected with the first heat exchanger through a pipeline; the collecting device is provided with at least one collecting tank; the ultrasonic extraction device comprises a first reaction tank, an end cover, an electric heater and an ultrasonic rod. The method for extracting an extract by adopting the supercritical fluid extraction system comprises a fluid supply step, a pressurizing and heating step, an extraction step, a collection step and a recovery step; through extraction and ultrasonic extraction in sequence, the raw materials are extracted more sufficiently, the extraction efficiency is improved, and meanwhile, cyclic utilization of carbon dioxide is achieved.

The invention discloses a circular heat-preservation type pre-extraction tank facilitating collection of extracted water. The pre-extraction tank comprises a tank body, a liner pipe body and functional holes. The center of the top of the tank body is provided with a material inlet, the side wall of a lower conical barrel is provided with a water inlet pipe, an outer pipe is fixed to the outer wallof the tank body, and the top of the outer pipe is provided with a steam inlet; a baffle is fixed to the inner wall of the outer pipe, the functional holes are formed in the baffle, and the steam inlet and a transfer pipe are connected with each other; the transfer pipe is arranged on the outer wall of a storage barrel, the bottom of the storage barrel is connected with a condensed water outlet,and a circulating pipe is mounted on the storage barrel at the same time. The circular heat-preservation type pre-extraction tank facilitating collection of the extracted water adopts a novel structural design and thus can utilize steam to carry out circular heat preservation operation on the reaction tank body, the constant temperature in the tank body can be ensured, the steam and water condensed by the steam can also be recycled, and the extracted water can be effectively collected.

Methods treat ash from waste incineration, wherein the methods at least comprise: a) the digestion of the ash by a leaching liquor containing phosphate ions in solution such as to form a first solid phase comprising impurities and a first liquid phase comprising phosphate ions; and b) the separation of said first liquid phase comprising phosphate ions from said first solid phase. Step a) is carried out for a duration of less than one hour or at a temperature of more than 40° C.

The invention discloses an intelligent manufacturing system for traditional Chinese medicine or natural plant extraction based on industrial internet, and belongs to the technical field of intelligent extraction equipment. Theintelligent manufacturing system for traditional Chinese medicine or natural plant extraction based on industrial internet comprises a high-temperature box, wherein two gears A are connected to the middle of the left wall in an F-shaped box cover in a front-back structure through a shaft in a sleeving mode, a pressing disc is welded to the lower end of a stirring rod, a worm wheel is rotationally connected to the upper portion of a fixing block through a shaft, and a medicine containing vessel is clamped to the upper side of the worm wheel through a groove. Through close cooperation of the structures, when the device is used for evaporating and extracting traditional Chinese medicines or natural plants, the traditional Chinese medicines or the natural plants can be fully stirred, and the traditional Chinese medicines or the natural plants are ground and crushed by the pressing disc, so that the interiors of the traditional Chinese medicines or the natural plants can be fully evaporated, the situation that traditional Chinese medicines or natural plants are large and cannot fully react to cause serious waste is avoided, the extraction efficiency is improved, the extraction amount of effective components is increased at the same time, and extraction is more efficient.

The invention belongs to the technical field of desulfurization of raw coal before combustion, and particularly relates to a method for removing organic sulfur in coal by a polar supercritical fluid.The purpose of the invention is to solve the problems of desulfurization of raw coal before combustion. The method comprises the following steps: crushing a coal sample to a proper particle size; detecting the total sulfur content and organic sulfur of the coal sample, detecting the chemical bond type and polarity of a -C-S-bond in the organic sulfur, and determining the polar supercritical fluidand reaction conditions; vacuumizing the reactor before a reaction; removing the organic sulfur in the coal by a system having a strong polarity, a good reaction activity and a high selectivity and formed by combining with the polar supercritical fluid; and collecting, analyzing and detecting the reacted sample. The proper polar supercritical fluid is selected according to different structures ofthe organic sulfur in the coal sample, and the prepared coal sample is subjected to the desulfurization reaction in the polar supercritical fluid, so the method has the advantages of high polarity, good pertinence, high selectivity, high reaction activity and good desulfurization effect, and is of great significance to desulfurization of raw coal before combustion.

The invention discloses an extraction method of ant effective components. The extraction method comprises following steps: 1, artificially cultured or wild complete ant bodies are selected; 2, the antbodies are introduced into a drying device; 3, the ant bodies are introduced into a carbon dioxide extractor, and two times of cell wall breaking treatment are carried out successively; 4, ant bodiesare maintained in the carbon dioxide extractor for extraction, wherein extraction process is divided into five stages, and from the first stage to the last stage, the carbon dioxide flow amount is increased gradually; and 5, after extraction, an extracted fluid is introduced into a separator for separation, wherein a first separation pressure of the separator is controlled to be 20 to 25 DEG C, separation temperature is controlled to be 50 to 55 DEG C, secondary separation pressure is controlled to be 10 to 15MPa, and separation temperature is controlled to be 50 to 55 DEG C, tertiary separation pressure is controlled to be 5 to 8MPa, and separation temperature is controlled to be 50 to 55 DEG C. The extraction method is capable of increasing yield of the effective components.