35results about How to "Achieve extraction" patented technology

The invention discloses a fibrous bed reactor and the equipment and process for extracting separation and coupling production of propionic acid. The invention utilizes an immobilized fibrous bed reactor unit, a membrane separation unit, an extraction and anti-extraction unit and an elution and condensation unit to realize the efficient production of propionic acid. The device has strong feasibility, simple operation, easy realization of automation, immobilized materials, long using life of the membrane and the matching equipment, convenient maintenance and good application prospect. Through extracting separation and coupling production technology, the separation of propionic acid is realized. The invention radically eliminates the feedback inhibition of propionic acid, implements the high density fermentation of propionibacterium and greatly improves the production efficiency of propionic acid through the fermentation method. The extracted water phase is returned to the reactor for recycle after elution and condensation by an elution device, which eliminates the harm of extractant for propionibacterium from the root.

The invention discloses a method of PEG-induced cloud point extracting and back extracting organic compound in the chemical engineering technology field, which uses the property that polyethyleneglycol induces hydrophilic surfactant to form two-phase distribution system at room temperature to achieve the extraction of organic compound, and causes the organic compound to be concentrated in the concentrated surfactant phase of the cloud point system. Since the PEG is hydrophilic and is distributed in the superfluous water phase, Winsor 2 micro-emulsion is used to remove the small amount of PEG in the concentrated surfactant phase, the surfactant and the organic compound are obtained after the water-in-oil phase in Winsor 2 micro-emulsion is further vaporized. Winsor 1 micro-emulsion is used for separating the surfactant from the organic compound, then the surfactant in the concentrated surfactant phase in the cloud point system is separated from involatile organic compound, and the surfactant can be recovered.

The invention provides a capillary action-based in situ sampling-microextraction device for allelochemicals in soil, and belongs to the technical field of plant root exudates and allelochemicals sampling. In the invention, the drill bit is connected to one end of a sampling tube through threads, the tube wall of the sampling tube has a micro hole. A double-head stud is a sealing rubber double-sided thread cap at the other end of the sampling tube. The other end of the sampling tube is connected to one end of the double-head stud through the threads, and the other end of the double-head stud isconnected to a tail tube through the threads. A channel is arranged in the middle of the tail tube, and a sealed end cover is arranged at the outer end of the tail tube. The sampling tube is made ofhigh-wetting alumina, and is repeatedly heated and sintered into a microporous ceramic sampling tube with a capillary diameter of 0.05-100um. The in situ sampling-microextraction device has strong capillary action, and liquid flows into the tube from micropores, which facilitates periodic microextraction, and qualitative and quantitative analysis of the allelochemicals in the soil.

The invention relates to a power-on hollow fiber membrane extractor, and belongs to the filed of the analysis of instruments. The power-on hollow fiber membrane extractor is a membrane extracting device of water solution which can quickly and effectively realize the extraction of inorganic anions in microsoluble organics by the action of an electrical field so as to convert the microsoluble organics into suitable ion chromatography for analysis, and mainly comprises a magnetic mixing device, a sample bottle, a magneton, a hollow fiber membrane, a sample bottle cap, a positive electrode, a negative electrode, a needle head, a teflon tube and a high-voltage direct current power supply. In the invention, the analysis and detection of the inorganic anions in the microsoluble organics through the ion chromatography is realized, and the application range of the ion chromatography is effectively widened; moreover, the power-on hollow fiber membrane extractor has the advantages of adopting simple device, needing low cost, and being simple and convenient to operate; the extraction balance can be reached after 5-10min; and the time of completing the extraction is greatly shortened.

The invention discloses a magnetic solid-phase extraction method of detecting ethoxyquine in fruits and vegetables. The method uses a magnetic covalent organic skeleton material Fe3O4@COF(TpDA) as anadsorbent for magnetic solid-phase extraction, so as to extract ethoxyquine in fruits and vegetables. The method detects PGRs in fruits and vegetables by using an MSPE technology, and selects Fe3O4@COF(TpDA) as the adsorbent. The adsorbent is convenient to use, has multiple carbonyl and aromatic rings on the surface, can enrich and extract PGRs through hydrophobic interaction, pi-pi interaction and hydrogen bonds, has good extraction effect and high structure stability, can be reused, and can detect multiple trace PGRs in fruits and vegetables sensitively. In the method, MSPE of Fe3O4@COF(TpDA) and HPLC-DAD are combined for the first time for measuring PGRs, providing a new concept for detection of PGRs.

The invention discloses a polypeptide sustained-release microsphere preparation. The preparation is composed of 3% to 10% by weight of exenatide or its salt as a raw material and 90% to 97% by weight of a polymer as an auxiliary material. An in-vitro initial release rate of the sustained-release microsphere preparation in 1h is less than 2%. The invention also provides a method for preparing the polypeptide sustained-release microsphere by an O/O phase coacervation method. The polypeptide sustained-release microsphere preparation has low microsphere sizes, low burst release and high entrapment efficiency, further prolongs long drug release time, can continuously release drugs for half a month or more in single-dose administration, can release drugs for 3 months, significantly reduces the frequency of administration, improves the patient's compliance, overcomes the defect of the existing peptide sustained-release microsphere preparation platform period and can get a near-zero order release curve.

The invention discloses a coalbed methane near-wellbore area chemical block removing method. The method sequentially includes (1) selecting a coalbed methane well which has serious-polluted coal reservoir near-wellbore area, obvious-decreased gas production or no gas production; (2) injecting proper ethanol to the coalbed segment of the coal reservoir near-wellbore area; (3) selecting soaking period and times according to coal rank difference of the coalbed segment, and then discharging the ethanol; (4) testing effect, namely comparing daily gas production and operating cost of the coalbed methane well before and after operation. According to the method, near-wellbore organic pollution and coal dust blocking are removed, coal is extracted, porosity and permeability of the coal reservoir are increased, a crack system of the coal reservoir is allowed to communicate with the wellbore, a blocking problem of the coalbed methane near-wellbore area is solved, economical investment is low, and gas production of the coalbed methane well can be increased.

The invention discloses a coal flow balance self-adaptive control method based on a rough set. The method comprises steps of acquiring coal flow state information data according to set time; using thecoal flow state information as the input of a control system; firstly, carrying out data preprocessing on the coal flow state information; analyzing and determining condition attributes and decisionattributes influencing coal flow balance self-adaptive control; carrying out attribute reduction on condition attributes through a rough set theory method, extracting self-adaptive speed regulation control rules of the coal mining machine and the scraper conveyor from a reduced simplest attribute set, finally carrying out rule extraction through a random forest algorithm, forming an effective coalflow balance self-adaptive control rule base, and achieving coal flow balance self-adaptive control.

The invention relates to an efficient extraction method of curcumin. The method comprises the following steps of: 1, adding an extracting agent A into crushed curcuma longa powder, and performing filtering to obtain a solid material I; 2, adding an extracting agent B into the obtained solid material I, and performing filtering to remove slag to obtain an extracting solution II; 3, centrifuging theextracting solution II, and performing filtering to obtain a solid material III; and 4, cleaning and drying the solid material III to obtain curcumin; specifically, the extracting agent A comprises asolvent a, and the solvent a contains the following structure shown as formula (1) in the specification, in the formula (1), Y<-> is one of Cl<->, Br<->, N(CN)2<->, HCOO<-> and CH3COO<->; and the extracting agent B contains a solvent b, and the solvent b contains the following structure shown as formula (2), in the formula (2), B<-> is a metal chelating anion. According to the characteristics ofcurcumin, a method for extracting the curcumin by combining the extracting agent A and the extracting agent B is designed, so that the yield of the curcumin is relatively high, the use of organic reagents is greatly reduced, and the green and environment-friendly requirements are met.

The invention discloses supercritical CO2 fluid extraction equipment for sporoderm-broken ganoderma lucidum spore powder. The supercritical CO2 fluid extraction equipment comprises a box body, a working chamber is arranged below a top plate of the box body; an inner cavity of the working chamber is cylindrical; through holes are distributed in the peripheral side walls of the working chamber; an air inlet pipe communicated with the working chamber is arranged on the top surface of the box body; a plurality of feeding holes are formed around the top plate of the box body; a guide hole is formedin the bottom of the shell of the working chamber; a movable plate is movably arranged in the working chamber; the outer wall of the movable plate hermetically contacts with the inner wall of the working chamber; the bottom face of the movable plate is connected with the inner bottom face of the working chamber through an elastic piece, a movable column is fixed to the bottom face of the movableplate, the bottom end of the movable column movably penetrates through the guide hole in the bottom of the shell of the working chamber, a stirring mechanism is arranged in the box body below the working chamber, and the bottom end of the movable column is fixedly connected with a discharging pipe. The extraction efficiency is improved through work of the stirring mechanism, and use is convenient.

The invention discloses a fully automatic coffee extracting device, comprising: a pressing head, a first sealing ring, a frame, a second sealing ring, a topping part, a coffee powder cup, a powder scraping and pushing part, a coffee powder scraping and topping connection Rod, coffee powder guide groove, coffee guide groove, transmission worm, transmission gear, return spring of top dregs part, ejector rod limit spring, ejector rod, folding ejector rod, folding ejector rod, base, first limit sensor and second Two limit sensors. Through the above method, the fully automatic coffee extraction device provided by the present invention has threads on the outside of the cup, and is driven by the gear with internal threads to move up and down in the frame to realize automatic work such as extraction of coffee powder and decanting without manual labor intervene. The invention is simple in structure, firm and stable, and has a short action cycle, which increases the strength and safety of parts under high water pressure during the extraction process.

The invention provides an on-line digestion combined liquid chromatography system and a method for detecting a coloring agent in tea. The on-line digestion combined liquid chromatography system comprises a first runner, a second runner, a waste liquid runner, an analysis runner, a switching valve and the like and further comprises a digestion runner, a digestion liquid runner, a buffering runner, an extraction runner and the like. The on-line digestion combined liquid chromatography system can realize on-line extraction of coloring agents to be digested in tea or other solid substrates without tedious one-line digestion, extraction and concentration processes, and achieves integration and high automation degree of extraction and liquid chromatographic analysis, so that the working efficiency is greatly improved and time is saved. The method provided by the invention is used for on-line detection of other coloring agents which do not need digestion in tea, and different coloring agents can be detected by the same equipment.

The invention relates to an extraction and separation device, in particular to a multi-linkage reciprocating extrusion type trace extraction-separation integrated device and a using method. The device comprises a pipe frame assembly, a lifting assembly rotating shaft and a support, the pipe frame assembly comprises side guide rods located at the two sides and a pipe frame connected between the two side guide rods, an extraction pipe is arranged on the pipe frame, the extraction pipe is a place for extraction and separation, the lifting assembly comprises a sliding block connected between the two side guide rods, a stirring and extruding column is connected to the sliding block, the sliding block can slide up and down along the side guide rods so as to drive the stirring and extruding column to enter and exit the extraction pipe, and the outer sides of the side guide rods are connected to the support through rotating shafts. The pipe frame assembly and the lifting assembly can synchronously swing through the rotating shaft, the stirring and extruding column enters and exits the extraction pipe to achieve extraction in the vertical state of the extraction pipe, and the stirring and extruding column enters the extraction pipe to achieve separation after extraction in the inclined state of the extraction pipe.

The invention discloses a high-flux automatic opening and closing type filtering suction head which comprises a liquid outlet pipe, a liquid pumping pipe and floating filter element cotton, the liquid outlet pipe comprises a first connecting section, a second connecting section and a third connecting section, the first connecting section, the second connecting section and the third connecting section are sequentially arranged from top to bottom and integrally connected, the first connecting section is of a hollow cylindrical structure, the second connecting section and the third connecting section are each of a hollow conical structure, the first connecting section, the second connecting section and the third connecting section internally communicate with one another, a liquid outlet is formed in the bottom of the third connecting section, the floating filter element cotton is movably clamped at the joint of the second connecting section and the third connecting section, the size of the floating filter element cotton is matched with that of the joint of the second connecting section and the third connecting section, a limiting groove is formed in the top end face of the floating filter element cotton, and the liquid pumping pipe is slidably connected into the first connecting section. The filtering suction head is simple in structure, reasonable in design, convenient to operate, short in extraction period, high in extraction efficiency and low in extraction cost, and has a good application prospect.

The invention discloses an extraction and separation device for biological pharmacy. The extraction and separation device comprises a base; the upper surface of the base is provided with an extractiondevice and a separation device; the extraction device comprises a support frame and an extraction body; the top end of the extraction body is provided with a cover body; a through hole is formed in the center of the cover body; a rotating shaft is arranged inside the through hole; a plurality of stirring blades are uniformly arranged on the rotating shaft; an extractant inlet is formed in the left side of the extraction body; a discharging hole is formed in the bottom end of the extraction body and is connected together with the separation device by a first pipeline; the separation device comprises a distillation section and a condensation pipe; the distillation section comprises a distillation flash flask and a plurality of heating rods; the left end of the distillation flash flask is connected together with the discharging hole, and the right end of the distillation flash flask is connected together with the condensation pipe; and a water inlet is formed in the upper end of the condensation pipe, and a water outlet is formed in the lower end of the condensation pipe. The extraction and separation device is capable of achieving extraction and separation functions and effectivelysolving problems proposed in the background art and worthy of popularization.

The invention discloses aconite decoction decocting equipment capable of quantizing water adding amount and decocting time, and belongs to the technical field of traditional Chinese medicine processing, the aconite decoction decocting equipment comprises a pot body, the surface of the pot body is provided with an interlayer, and the upper surface of the pot body is in lap joint with a sealing edge. According to the aconite decoction decocting equipment capable of quantizing the water adding amount and the decoction time, a drainage piece gathers steam and drives a driving blade to rotate, meanwhile, the driving blade drives a driven blade to synchronously start to rotate through a transmission shaft, the driven blade guides airflow to flow on the surface of an upper cover plate, heat dissipation is conducted on the surface of the upper cover plate, and the water adding amount and the decoction time can be quantized. Meanwhile, when the internal steam enters the space between the flexible sealing plate and the upper cover plate, the internal steam is condensed and converged to the surface of the flexible sealing plate and flows back through the drainage piece, in this way, good steam recovery can be kept during use, internal water loss is reduced, the decocting time is prolonged, steam emission can be reduced while long-time decocting is conducted, and the use effect is good. And the indoor influence is greatly reduced.

The invention discloses a copper ion imprinted organic-inorganic hybrid monolithic column as well as a preparation method and application thereof, and belongs to the technical field of detection. The copper ion imprinted hybrid monolithic column is prepared by combining an ion imprinting technology and a monolithic material, has a space structure and imprinting sites matched with target ions, can realize specific recognition and extraction of Cu (II), and shows accurate analysis of actual samples with complex matrixes. Particularly, the copper ion imprinted hybrid monolithic column has the potential of trace Cu (II) in a mineral sample with very high main metal content, and can be used for solid-phase microextraction analysis of trace metal elements in the environment and the mineral sample.

The invention provides a system for extracting lignite wax from pulverized coal and a method thereof . The system for extracting lignite wax from pulverized coal comprises a pulping unit, an extraction unit, a filtering unit and a desolventizing unit which are connected in sequence, wherein the extraction unit comprises a tubular extractor. The method for extracting lignite wax from pulverized coal provided by the invention comprises the following steps: mixing a pulverized coal raw material with an extracting agent to obtain slurry; extracting the slurry through a tubular extractor, and obtaining the extracted slurry; filtering the extracted slurry to obtain a filter cake and filtrate a; and distilling the filtrate a to obtain the lignite wax. The method provided by the invention can realize extraction of lignite wax from pulverized coal, and is high in extraction rate and low in solvent loss rate.

The invention discloses a dispersed solid-phase extraction material, a preparation method and application thereof, and belongs to the technical field of the detection of aflatoxin in edible oil. The preparation method of the dispersed solid-phase extraction material includes the following steps that: humic acid is weighed and is subjected to ultrasonic washing for 12 to 18 min, and the washed humic acid is subjected to centrifuging, and a solid precipitate is obtained and is dispersed in acetone, and the acetone is subjected to heating and evaporation until the acetone is completely evaporated, and residues are obtained; the residues are taken and arranged in a Soxhlet extractor, and 180 ml of cleaning fluid is added to the Soxhlet extractor, and heating, refluxing and cleaning are performed until a reflux liquid is clear and colorless, and heating is stopped; a cleaned material is taken out, and the material is dried at 100 DEG C for 1.5 to 2.5h, and is cooled for 0.5 to 1h, and thematerial is sieved by a 120-mesh screen, screen underflow is obtained, and the dispersed solid-phase extraction material is obtained. The preparation method disclosed by the invention is suitable formost existing humic acids on the market at present. The preparation method is simple in process and beneficial to control; and the prepared dispersed solid-phase extraction material is stable in property.