60results about How to "Improve separation and extraction efficiency" patented technology

The invention provides a method and a device for separating lithium from a lithium-containing solution. The method comprises the following steps: dividing an electrolytic cell into an anode chamber, an organic phase chamber and a cathode chamber by adopting an ion exchange membrane; and transferring lithium ions in the lithium-containing solution inside the anode chamber to a lithium enrichment solution inside the cathode chamber by virtue of an organic phase in the organic phase chamber under the effect of an external voltage, wherein the organic phase is an organic reagent which can selectively have chemical reaction with the lithium ions in the lithium-containing solution; the device comprises the electrolytic cell; the electrolytic cell is divided into the anode chamber, the organic phase chamber and the cathode chamber by adopting the iron exchange membrane; and the organic phase chamber is positioned between the anode chamber and the cathode chamber. Compared with the prior art which has low separation efficiency on the lithium irons and the other metal irons in the lithium-containing solution, the method and the device for separating the lithium from the lithium-containing solution, provided by the invention, can be used for treating a lithium-containing solution which has a relatively high magnetism to lithium ratio.

The invention discloses a combined cyclone separation / collection device and a method for separating and collecting pollen based on the device. The device comprises a cylindrical settling chamber and a double-cylinder cyclone. The cylindrical settling chamber is down communicated with an umbrella-type taker. The sidewalls of the top of the cylindrical settling chamber are communicated with the outer cylinder of the cyclone. An air duct is arranged outside the cylindrical settling chamber, and is communicated with the cylindrical settling chamber and the inner cylinder of the cyclone, respectively. Besides, the air duct is connected to an external variable frequency fan. A cylinder screen, a reflecting cone and a three-way air blowback pipe are arranged in the inner space of the cylindrical settling chamber. The rotating central shaft of the reflecting cone rotates through connection with an external variable speed motor. A stripper plate and a discharge chute are arranged on the bottom of the cylindrical settling chamber. Furthermore, a pollen collecting chamber is arranged on the bottom of the double-cylinder cyclone. The method comprises the following steps of: suctioning dust-containing pollen by means of an airflow, and filtering the dust-containing pollen; performing separation in the cylindrical settling chamber; and collecting the pollen in the cyclone, and purifying the dust-containing airflow for recycling. The device and the method of the invention are capable of effectively improving the pollen separation / extraction efficiency and preventing dispersion of pollen, and suitable for being popularized and used.

The invention relates to a method for improving extraction and separation efficiency of nickel and cobalt in biological leaching liquid. The method comprises the following steps: (1) respectively carrying out homogeneous saponification on a nickel-cobalt extraction agent P507 and a synergist Cynaex272 by adopting a NaOH solution, wherein the saponification time is 30 minutes, and the saponification rate is 60%; (2) mixing the saponified extraction agent P507 with the synergist Cynaex272 according to the volume ratio of 3:2 to form a combined extraction agent, and diluting the combined extraction agent of which the final concentration is 10% by using 260# sulfonated kerosene; (3) extracting under the conditions that the temperature is 25-28 DEG C and the initial pH value is 1.5-2.0, wherein the extraction phase ratio O / A is 1:4, the oscillation strength is 180rpm, and the extraction oscillation time is 3 minutes, controlling the extraction balance pH value to 4.0-4.5; stewing and splitting for 30 minutes, and separating an organic phase from a water phase; (4) adding sulfuric acid extraction cobalt to the separated organic phase, so as to achieve nickel-cobalt separation. By adopting the method, nickel-cobalt extraction and separation can be achieved under a low pH value, the extraction cost also can be reduced, the extraction grade is reduced, and the loss caused by nickel-cobalt is reduced, so as to improve the extraction and separation efficiency of nickel and cobalt.

The invention discloses an extraction method for mangrove plant kandelia candel leaf total protein suitable for two-dimensional electrophoresis. A traditional trichloroacetic acid / acetone precipitation method for protein extraction and a traditional phenol extraction method for protein extraction are combined, a cosolvent SDS solution is introduced, the extraction process is optimized, and the Phe-B method suitable for extraction of the mangrove plant kandelia candel leaf total protein is established. The extraction efficiency and quality of the protein are effectively improved, and the technical scheme can be specifically suitable for extraction of the kandelia candel leaf protein in two-dimensional electrophoresis. The method has the advantages of being easy to operate, high in protein extraction efficiency and fewer in interfering substance, and is suitable for materials with difficult protein extraction, low protein extraction efficiency and more interfering substances. The extracted kandelia candel leaf protein completely meets the requirements of the first direction and the second direction of two-dimensional electrophoresis, a high-quality two-dimensional electrophoresis gel map with high resolution, more clear protein points, uniform distribution and the clear background can be obtained, and experiment repeatability and stability are good.

The invention discloses an irrigating solution, an enzymatic hydrolysate and a method for isolating placenta hematopoietic stem cells. The irrigating solution consists of a penicillin-streptomycin double-antibody, phentolamine, vitamin C and PBS. The enzymatic hydrolysate consists of a basal culture medium, collagenase VIII, pancreatin, 1*heparin sodium, phentolamine, vitamin C and Z-VAD-FMK. The method comprises the following steps: irrigating and cleaning a preprocessed placenta with the irrigating solution; irrigating the enzymatic hydrolysate from placental artery until the enzymatic hydrolysate flows out of placental vein, ligating placental artery and vein and standing by; loosening the placental artery and vein and irrigating the irrigating solution from the artery, collecting all liquid from the vein, centrifuging and reserving cell sediments, and recovering and purifying mononuclear cells containing the hematopoietic stem cells sequentially by virtue of a hydroxyethyl starch method and a red blood cell lysis method; re-suspending and obtaining the placenta hematopoietic stem cells. The irrigating solution, the enzymatic hydrolysate and the method disclosed by the invention can significantly improve separation and extraction efficiencies, and a great amount of cells are obtained; the hematopoietic stem cells are high in content, high in survival rate and quite low in cell pollution rate.

The invention relates to a method for separating and extracting pig placentin, and belongs to the field of research and development of health-care foods. The method takes the pig placenta as a raw material, and comprises the steps of carrying out high-speed tissue homogenization, low-temperature and low-frequency ultrasonic-assisted extraction and high-speed refrigerated centrifugation on the pig placenta to obtain a coarse extract, wherein the content of soluble proteins is 2-4mg / mL; carrying out ultrafiltration by adopting a 10KDa ultrafiltration membrane to obtain a pig placentin liquid with the low molecular weight, wherein the content of polypeptide is 600-1000mu g / mL; carrying out microwave vacuum freeze-drying to obtain a solid pig placentin product. The pig placentin produced by using the method has functions of nutrition supply and health care; low-frequency ultrasonic waves (28-45kHz) are used for extracting in an auxiliary way, so that the extraction rate in the method is 10-15% higher than that in the method without ultrasonic assistance; the microwave vacuum freeze-drying technology is adopted, the drying time of the method is shortened by 30-40% compared with that of the common vacuum freeze-drying; furthermore, after the method is adopted, the loss of the nutritive value of the pig placentin is small, and the separating efficiency and the extracting efficiency of the pig placentin can be improved.

The invention relates to a method for separating and preparing zirconia from zirconium oxychloride mother liquor. The zirconium oxychloride mother liquor is taken as a raw material, an organic multielement extraction agent is adopted and comprises, in percentage by volume, 5-25 percent of neutral extraction agent, 5-25 percent of acid extraction agent and 50-90 percent of diluent, zirconium in the zirconium oxychloride mother liquor is extracted into an organic phase to obtain a zirconium containing extract, hafnium contacting raffinate is obtained from a water phase, thereby realizing separating of the zirconium from hafnium. Then the organic phase is subjected to back extraction to obtain the zirconium containing back extraction liquid in the water phase, and the zirconium containing back extraction liquid is precipitated by ammonia water and is roasted to obtain zirconia. The method adopts the organic multielement extraction agent to achieve a better synergic action for the separating of the zirconium from hafnium, no emulsion exists in the extracting process, extracting and separating are easy, and the problem of easiness in emulsion in an extracting process of the single neutral extraction agent is solved; the extraction separating efficiency of the zirconium is obviously improved, and the recovery rate and purity of the zirconia are improved; the method does not use a high toxicity reagent such as thiocyanic acid and has small toxicity on the human body and the environment.

The invention discloses an irrigating solution, an enzymatic hydrolysate and a method for isolating placenta hematopoietic stem cells. The irrigating solution consists of a penicillin-streptomycin double-antibody, phentolamine, vitamin C and PBS. The enzymatic hydrolysate consists of a basal culture medium, collagenase I, collagenase II, heparin sodium, phentolamine, vitamin C and Z-VAD-FMK. The method comprises the following steps: cleaning blood inside a placenta with the irrigating solution; irrigating the enzymatic hydrolysate into the placenta and enzymatically hydrolyzing at room temperature; collecting the enzymatic hydrolysate, centrifuging and reserving cell sediments; re-suspending the cell sediments by virtue of the PBS, adding a hydroxyethyl starch solution, standing by, reserving and centrifuging upper liquid and discarding supernatant; re-suspending the cell sediments by virtue of a red blood cell lysis solution, promoting lysis to residual red cells, centrifuging and discarding supernatant; and re-suspending the cell sediments by virtue of a culture medium, centrifuging and discarding supernatant, so that the placenta hematopoietic stem cells are obtained. The irrigating solution, the enzymatic hydrolysate and the method disclosed by the invention can significantly improve separation and extraction efficiencies, and a great amount of cells are obtained; the hematopoietic stem cells are high in content, high in survival rate and quite low in cell pollution rate.

The invention belongs to the field of cobalt and nickel separation recycling, and particularly relates to a cobalt and nickel extraction separation method capable of reducing coextraction. The separation method sufficiently combines the characteristics and needs of cobalt and nickel extraction and separation, a buffer action mechanism is used for maintaining the water phase pH to be within the optimal pH range of cobalt rather than the optimal pH range of the nickel in the cobalt and nickel extraction process, meanwhile, key process parameters in the extraction process are controlled and adjusted, the buffer capacity of a buffer solution is maintained, the coextraction of nickel is reduced, and the technical problem that during cobalt and nickel extraction and separation in the prior art,due to the fact that in the extraction process, pH of liquid rises, nickel co-extraction is serious, and finally, the cobalt and nickel separation efficiency is reduced is solved.

The invention discloses a method of separating and extracting coenzyme Q10 from microbial fermentation broth. The method includes filtering the microbial fermentation broth, and drying to obtain bacterial powder; using a micronization technique to crush the bacterial powder into coenzyme Q10 micropowder 2-35 mu m in particle size; extracting, performing solid-liquid separation, carrying out chromatography, and crystallizing to obtain finished coenzyme Q10. The method herein has high yield; product quality is good; the process is simple; extraction time is short; separation and extraction efficiency is high; the cost is low; the method is suitable for industrial production.

The invention discloses a natural product separation method with improved separation efficiency. The method comprises steps as follows: a fresh natural product is frozen in the ultra-low temperature environment and soaked in liquid nitrogen; the natural product is crushed in the low-temperature environment; a hydrophobic organic matter, hydrophilic low-molecular organic matter and an inorganic salt solution are added to the crushed natural product in proportion; extraction and ultrasonic extraction are performed; 6) solid-liquid separation is performed. According to the natural product separation method, the fresh plant raw material is subjected to low-temperature freezing and crushing treatment, the crushing mode does not require material drying during conventional crushing, the crushed material is in a vitrification state, cell walls and organelle of cells are damaged simultaneously, the state of the crushed material is greatly different from that of materials obtained by use of an ordinary crushing device, active ingredients inside and outside the cells can be sufficiently released, decomposition and derivation of the active ingredients in the processing process of the natural product are reduced, and the extraction rate is increased.

The invention discloses a 2,4-diaminotoluene molecularly imprinted polymer, a preparation method and application thereof, and particularly provides the 2,4-diaminotoluene molecularly imprinted polymer prepared from a functional monomer of methyl acrylic acid, a template molecule 2,4-diaminotoluene, and a crosslinking agent divinyl benzene, a preparation method for the molecularly imprinted polymer, and application of the molecularly imprinted polymer to solid phase extraction separation. The 2,4-diaminotoluene molecularly imprinted polymer provided by the invention is more excellent in mechanical property, higher in specific volume, higher in adsorption acting force to 2,4-diaminotoluene, and higher in adsorption capacity to 2,4-diaminotoluene; the preparation method for the 2,4-diaminotoluene molecularly imprinted polymer is short in synthesis time, and the washing of the template molecule is easy; the molecularly imprinted polymer is high in solid phase extraction efficiency to 2,4-diaminotoluene and more thorough in adsorption.

The invention discloses a purification method of ferric trichloride, which comprises the following steps: oxidizing iron-containing chloride into ferric trichloride, adding industrial hydrochloric acid and butyl acetate, extracting, standing for layering, taking an organic phase, adding a stripping agent, carrying out reverse extraction to obtain ferric trichloride with ultralow impurity content, evaporating, concentrating, and removing organic matters to obtain high-purity ferric trichloride. Recyclable organic phase. The purification process is not limited by the purity of production raw materials, is simple to operate and low in equipment investment, and does not use toxic extractant. The ferric trichloride product produced by the process disclosed by the invention can be applied to the fields of drinking water treatment, medical intermediates, analytical testing, precision etching and the like.

The invention belongs to the technical field of chemical separation and particularly relates to a polymer monolithic column, a solid phase extraction filter based on same, and a preparation method and an application thereof. The polymer is prepared through an in-situ polymerization reaction of a monomer, a crosslinker, a pore former and an initiator. The monolithic column and the solid phase extraction filter can perform selective extraction to a to-be-tested target substance or impurity according to demands on separated samples. Compared with a conventional hydrophobic solid phase extraction material, the monolithic column and the solid phase extraction filter have a wider coverage of applicable objects. Compared with a conventional packed solid phase extraction small column, the monolithic column can give consideration to both separation speed and recovery ratio, so that the extraction and separation efficiency is greatly improved.

The invention discloses a method for comprehensively recovering nickel and magnesium in a bio-leaching process of high-magnesium low-nickel sulfide ore. The method comprises the following steps: treating the bio-leachate of high-magnesium low-nickel sulfide ore through an ion exchange resin column to adsorb nickel ions, and enabling the magnesium-rich solution to flow out; desorbing residual magnesium ions in the ion exchange resin by use of low-acidity sulfuric acid, desorbing nickel ions in the ion exchange resin by use of high-acidity sulfuric acid, and returning the nickel ion desorption solution to the yard; and when the mass concentration of Mg and Ni in the leachate of the yard is lower than 5, extracting nickel with Versatic 10 and performing back extraction of an organic phase to obtain a nickel-rich solution. According to the method, by increasing the nickel-magnesium concentration ratio and reasonably matching the technological parameters, nickel and magnesium are effectively separated, and a recovery method of nickel and magnesium in bio-leachate is realized.

The present invention discloses a pentafluoroethane purification method, which comprises: (a) preparing a reaction device; (b) carrying out extracting rectification; (c) carrying out distillation purification; and (d) using a by-product. According to the present invention, the method has advantages of simple process and easy control; the method sequentially comprising extracting rectification and distillation is used, such that the separation efficiency is high, the crude product is effectively separated, the purity of the separated finished product pentafluoroethane can achieve more than 99.9%, the purity is high, and the quality is good; and the separated by-product chloropentafluoroethane is recycled, and is converted into the product pentafluoroethane so as to improve the utilization rate of the by-product and turn the waste into treasure.

The invention provides a method for extracting various urinary proteins from urine. The method utilizes simultaneous affinity capture of various proteins in urine by a specific adsorbent, and staged specific elution from the adsorbent, and comprises the following steps: 1) collecting urine, and performing dialysis, centrifugation and filtration; 2) preparing a Cibacron Blue F3-GA-agarose gel affinity adsorbent, and performing column packing and equilibrating; 3) loading the urine and performing standing; and 4) performing elution in stages, and collecting elution fractions of each stage. The method of the invention can extract no less than eight kinds of high-value urinary proteins in parallel from the same batch of urine at one time, and significantly improves separation and extraction efficiency of urinary proteins, so that the urine is fully utilized as a specific biological resource.

The porous silicon oxide microfluidic sample pretreatment chip of the present invention relates to a microfluidic sample pretreatment chip used for separation and purification of biological samples. Silicon wafers and glass are used as chip main materials, and microchannels are etched on the silicon wafers. Etch the sample inlet and outlet holes or the sample inlet and outlet flow cells at both ends of the microchannel, bond the glass cover plate on the silicon chip, prepare porous silicon in hydrofluoric acid ethanol solution by electrochemical corrosion method, and then A thermal oxidation method is used to prepare a porous silicon oxide layer to modify the micro channel, and the porous silicon oxide layer is used as a solid phase carrier for separation and purification. This chip has a porous silicon oxide layer prepared on the surface of the microchannel of the silicon chip, which has a larger specific surface area than the ordinary chip without a porous silicon oxide layer, increases the adsorption area of ​​the solid phase carrier, and greatly improves the separation and extraction of biological samples. efficiency.

The invention relates to a method for separating and preparing zirconia from zirconium oxychloride mother liquor. The zirconium oxychloride mother liquor is taken as a raw material, an organic multielement extraction agent is adopted and comprises, in percentage by volume, 5-25 percent of neutral extraction agent, 5-25 percent of acid extraction agent and 50-90 percent of diluent, zirconium in the zirconium oxychloride mother liquor is extracted into an organic phase to obtain a zirconium containing extract, hafnium contacting raffinate is obtained from a water phase, thereby realizing separating of the zirconium from hafnium. Then the organic phase is subjected to back extraction to obtain the zirconium containing back extraction liquid in the water phase, and the zirconium containing back extraction liquid is precipitated by ammonia water and is roasted to obtain zirconia. The method adopts the organic multielement extraction agent to achieve a better synergic action for the separating of the zirconium from hafnium, no emulsion exists in the extracting process, extracting and separating are easy, and the problem of easiness in emulsion in an extracting process of the single neutral extraction agent is solved; the extraction separating efficiency of the zirconium is obviously improved, and the recovery rate and purity of the zirconia are improved; the method does not use a high toxicity reagent such as thiocyanic acid and has small toxicity on the human body and the environment.

The invention relates to a valveless liquid-liquid extraction device. The device comprises a glass tube with two ends bent inwards as well as a rotatable fixing clamp for fixing the glass tube on a vibrator, wherein one end of the glass tube is a liquid charging end, the other end is a liquid discharging end with scales, a rubber plug and a rubber sealing cap are also arranged at the liquid charging end and the liquid discharging end respectively, the liquid charging end and the liquid discharging end are bent inwards and form a first bent angle and a second bent angle respectively, and a middle section pipeline for accommodating liquid samples and an organic solvent for extraction are formed between the first bent angle and the second bent angle. Compared with the prior art, the device has the advantages of simple structure, economy and practicability, the design of a valve of a traditional separating funnel is avoided, few liquids remain, smoothness is realized during liquid separation, the device is applicable to a few samples, for which the separating funnel cannot be used, with the dosage as few as one milliliter, the extraction separating efficiency is high, and the accurate volume can be detected during liquid discharge separation.

The invention relates to a valveless liquid-liquid extraction device. The device comprises a glass tube with two ends bent inwards as well as a rotatable fixing clamp for fixing the glass tube on a vibrator, wherein one end of the glass tube is a liquid charging end, the other end is a liquid discharging end with scales, a rubber plug and a rubber sealing cap are also arranged at the liquid charging end and the liquid discharging end respectively, the liquid charging end and the liquid discharging end are bent inwards and form a first bent angle and a second bent angle respectively, and a middle section pipeline for accommodating liquid samples and an organic solvent for extraction are formed between the first bent angle and the second bent angle. Compared with the prior art, the device has the advantages of simple structure, economy and practicability, the design of a valve of a traditional separating funnel is avoided, few liquids remain, smoothness is realized during liquid separation, the device is applicable to a few samples, for which the separating funnel cannot be used, with the dosage as few as one milliliter, the extraction separating efficiency is high, and the accurate volume can be detected during liquid discharge separation.

The invention provides a method for recycling rare earth from a waste nickel-metal hydride battery. The method is carried out by the following steps in sequence: crushing the battery, dissolving battery core powder, removing impurities, extracting for a plurality of grades and reversely extracting for a plurality of grades. The step of extracting comprises the step of adding an extracting agent organic solution into a rare earth raw solution without the impurities; the extracting agent organic solution comprises an alkyl methyl amine mixed organic matter, organophosphorus esters, sulfonated kerosene and liquid organic alcohols with more than six carbon atoms; the grades for extracting are at least three grades and the grades for reversely extracting are at least three grades. The recycling method provided by the invention utilizes the special extracting agent organic solution and the extraction and separation efficiency on the rare earth is high and commonly can be up to more than 99%; with the adoption of the recycling method, any sodium ion is not introduced and a sodium removing procedure and the sodium removing cost are saved; an organic extracting agent can be recycled and reutilized so as to further reduce the cost; the organic extracting agent does not need to be saponified so that the saponification cost is saved.

The invention discloses a method for extracting grape seed oil by an ultrasound-assisted supercritical carbon dioxide technology as well as a product of the method and an application of the product. The method comprises the following steps: performing pretreatment crushing on dried grape seeds until 60-80-mesh grape seeds are obtained, placing the crushed grape seeds into a supercritical reactionkettle, controlling pressure of the supercritical reaction kettle to 10-40 MPa, controlling the temperature to 50-100 DEG C, and controlling pressure keeping time to 60-120 min; opening an ultrasonicdevice, and performing extraction to obtain primary grape seed crude oil; and finally, performing separation for two times by using a molecular distiller to obtain the high-purity grape seed oil. According to the method disclosed by the invention, an ultrasonic technology is combined with a supercritical carbon dioxide extraction technology, the ultrasound-assisted supercritical carbon dioxide technology is utilized to realize extraction of the grape seed oil, and purposes of high-efficiency extraction, separation without impurities and high purity of an extraction product are achieved; and the method disclosed by the invention has a simple operation process and short extraction time, reduces costs, improves efficiency of extraction separation, and has stronger technical novelty and creativity.

The invention belongs to the field of separation and recovery of cobalt and nickel, and more specifically relates to a method for extracting and separating cobalt and nickel that reduces co-extraction. This separation method fully combines the characteristics and requirements of cobalt-nickel extraction and separation, and proposes to use the buffer mechanism to maintain the pH of the aqueous phase in the cobalt-nickel extraction process in the optimal pH range of cobalt instead of the optimal pH range of nickel, and at the same time, the extraction process Control and adjust the key process parameters in the medium, maintain the buffering capacity of the buffer solution, and reduce the co-extraction of nickel, thereby solving the problem of severe nickel co-extraction due to the increase in the pH of the feed solution during the extraction process of the existing technology when extracting and separating cobalt and nickel, which eventually leads to Technical problem of reduced cobalt-nickel separation efficiency.

The invention relates to a method for separating and extracting pig placentin, and belongs to the field of research and development of health-care foods. The method takes the pig placenta as a raw material, and comprises the steps of carrying out high-speed tissue homogenization, low-temperature and low-frequency ultrasonic-assisted extraction and high-speed refrigerated centrifugation on the pig placenta to obtain a coarse extract, wherein the content of soluble proteins is 2-4mg / mL; carrying out ultrafiltration by adopting a 10KDa ultrafiltration membrane to obtain a pig placentin liquid with the low molecular weight, wherein the content of polypeptide is 600-1000mu g / mL; carrying out microwave vacuum freeze-drying to obtain a solid pig placentin product. The pig placentin produced by using the method has functions of nutrition supply and health care; low-frequency ultrasonic waves (28-45kHz) are used for extracting in an auxiliary way, so that the extraction rate in the method is 10-15% higher than that in the method without ultrasonic assistance; the microwave vacuum freeze-drying technology is adopted, the drying time of the method is shortened by 30-40% compared with that of the common vacuum freeze-drying; furthermore, after the method is adopted, the loss of the nutritive value of the pig placentin is small, and the separating efficiency and the extracting efficiency of the pig placentin can be improved.

The invention relates to a packed extraction tower, application thereof and a residual oil solvent deasphalting method. The packed extraction tower is composed of a shell, a raw material inlet locatedat the middle part of the shell, an extraction solvent inlet located at the lower part of the shell, a tower top extraction phase outlet, a tower bottom raffinate phase outlet and extraction structured packing; the extraction structured packing fills the shell of the extraction tower; and the extraction structured packing is grid type packing. The packed extraction tower provided by the inventionis suitable for a heavy oil solvent deasphalting process, and is high in separation efficiency and large in treatment capacity.

The invention discloses a fresh zanthoxylum oleoresin separation and purification process which comprises the following steps: after harvesting fresh zanthoxylum, carrying out cold pressing within two hours to obtain fresh zanthoxylum oleoresin, carrying out countercurrent extraction separation on the fresh zanthoxylum oleoresin through a liquid substance extraction and separation unit of a supercritical CO2 fluid dynamic countercurrent extraction and separation system, and after the countercurrent extraction separation is completed, obtaining fresh zanthoxylum resin from an extraction unit, and obtaining the fresh pepper essential oil through the separation unit. The extraction separation process is as follows: the feeding rate is 40kg / h, the CO2 flow rate is 600L / h, the extraction temperature is 45 DEG C, and the extraction pressure is 20MPa; the separation temperature I is 40 DEG C, the separation pressure I is 7.5 MPa, the separation temperature is 55 DEG C, and the separation pressure II is 4-6 MPa; the total yield of the fresh zanthoxylum oil resin product reaches 98.74%-99.19%, and the separation efficiency reaches 94.00%-99.24%; the volatile oil content of the obtained fresh zanthoxylum bungeanum essential oil can reach 101.94-128.93 ml / 100g, and the numb degree is lower than 5 mg / g; and the content of volatile oil in the obtained fresh zanthoxylum bungeanum maxim resin is smaller than 5 ml / 100 g, the hemp degree can reach 141.12 mg / g to 182.56 mg / g, and the hemp degree is increased to 42.59% to 53.17%. According to the process disclosed by the invention, the fresh Chinese prickly ash essential oil with high volatile oil content and the fresh Chinese prickly ash resin with high numb degree can be obtained, and the purification effect of the two products is remarkable.

The invention relates to the technical field of microalgae bioengineering, and discloses a method and a system for separating microalgae grease. The method comprises the following steps: (1) microalgae are extracted under pressure of 0.1 MPa or higher with an extractant, and algae residues and an extraction mixture are obtained, wherein the extractant is an organic substance which is capable of being liquefied and extracting grease under pressure of 0.1 MPa or higher and is gas phase at normal temperature and pressure; (2) the extraction mixture is decompressed to recover the extractant, and the microalgae grease is obtained. The method has the advantages of high extraction separation efficiency, high speed, high grease purity and low cost and is environmentally friendly and pollution-free, and extractant residues are absent in the solid phase.

The invention discloses a drug extraction device for biomedicine. The device comprises a tank body and a shell, wherein one side of the tank body is connected with a communicating pipe, the other endof the communicating pipe is connected with the shell, the communicating pipe is provided with a plurality of branch pipes, and a plurality of aeration ports are formed in the branch pipes; a coolingbox is arranged in the shell, a condensation pipe is arranged in the cooling box, a discharge port is formed in the bottom of the cooling box, and the discharge port is an extract liquor discharge port; the communicating pipe is communicated with the cooling box; a clamping mechanism is arranged at the bottom of the cooling box; a safety mechanism is arranged at the top of the shell; the communicating pipe is provided with a plurality of aeration ports, so that the contact area of the supercritical gas and the extraction liquid is increased, the mixing rate of the supercritical gas and the extraction liquid is increased, and the extraction effect is improved; and by arranging a safety mechanism, safe pressure relief is achieved, and the use safety of the equipment is improved.