42results about How to "Applicable separation" patented technology

The invention discloses a method for quickly separating optical crystals by using layer light. The method comprises the following steps of setting the separating direction of the optical crystals by using ultrafast laser light or a miniature diamond grinding wheel; forming a precast microcrack with the direction along a to-be-separated path at a separation starting end; performing scanning heating on the preformed microcrack by using focusing laser light to form a laser-induced microcrack; quickly moving the focusing laser light along the to-be-separated path until the laser moving speed is the same with the crack expansion speed; enabling the focusing laser light to always follow the foremost end of the microcrack; performing thermal expansion effect on materials on two sides of the microcrack; generating forward squeezing force and lateral pulling stress on the tip of the microcrack; and pulling materials of the crystals so as to realize high-quality separation of the crystals. A device comprises a microcrack preforming mechanism, a single-focus-point laser machining system and a two-dimensional worktable. By using the method and the device, the separation speed, the separation accuracy, the machining safety and the machining quality of the optical crystals can be improved, non-loss separation of the optical crystals is realized, and a quasi-polishing-level finishing separation surface is formed.

The invention provides a rotary type pressure-swing-adsorption gas separation method, and belongs to a gaseous mixture separation method, in particular to a method for separating gases with a moving absorbent. The method is characterized in that the method adopts a rotary pressure-swing-adsorption gas separator (3) consisting of a plurality of solid adsorbent components partitioned by absorbent component partitions (10); the gas separation procedure comprises three operation steps of pressurization and delivery of gaseous mixture, absorption of gaseous mixture under high pressure, desorption and regeneration under low pressure. The invention provides the perfect method for rotary pressure-swing-adsorption gas separation which adopts simple devices; needs low investment; saves energy with high productive capacity; and is highly automatic with stable process, and convenient operatation. The absorbent is selected flexibly and has long service life, and little absorbent is used. The method is widely used for gaseous mixture separation during the technological processes of air separation, ammonia synthesis, methanol synthsis, petroleum refining and so on.

The invention discloses a high-throughput high-retention rate composite nanofiltration membrane preparation method. The preparation method comprises mixing polyetherimide and an organic solvent, carrying out stirring, carrying out standing deaeration to obtain a membrane casting solution, pouring the membrane casting solution on a non-woven fabric, carrying out blade coating and volatilization to obtain a wet membrane, immersing the wet membrane in water, taking out the wet membrane, immersing the wet membrane in an ethene diamine solution for a crosslinking reaction, taking out the membrane, washing the membrane through water, sucking water on the membrane to obtain a crosslinked porous support membrane, fixing the crosslinked porous support membrane between a flat plate and a frame, putting the crosslinked porous support membrane in a constant temperature environment, pouring a water phase aqueous solution into the frame, discharging the solution after the reaction, putting the membrane in a constant temperature environment, removing residual moisture on the membrane surface, pouring a trimesoyl chloride solution into the frame, discharging the solution after a reaction and carrying out drying to obtain the composite nanofiltration membrane. The preparation method has simple processes and can be operated easily. The composite nanofiltration membrane has high throughput, a high retention rate and good membrane stability, can retain micromolecular substances, can be used in a water system and can be used for organic system separation.

The invention provides a preparation method for a monoamine-grafted-and-modified crosslinked polyimide solvent-resistant nanofiltration membrane. The preparation method comprises the following steps: a, preparing a mixed solution from a solvent and a cosolvent according to a mass ratio of 1: 0.1-5; b, adding 15 to 28% of a polyimide solution into the mixed solution so as to prepare a membrane casting liquid; c, adding 2.5 to 20% of monoamine into the membrane casting liquid and carrying out mixing at 25 to 80 DEG C for 3 to 24 h under stirring so as to guarantee complete grafting; d, preparing a membrane by using a immersion-precipitation phases inversion process, washing the prepared membrane with deionized water a plurality of times and standing the washed membrane for subsequent usage; e, preparing an alcoholic solution of diamine with a concentration of 0.5 to 20%; f, putting the prepared membrane in the alcoholic solution of diamine prepared in the previous step for crosslinking modification for 0.25 to 48 h; and g, after completion of the reaction, soaking and cleaning the membrane in an alcohol solvent so as to obtain the polyamide nanofiltration membrane with excellent performance. The polyimide solvent-resistant nanofiltration membrane prepared in the invention has the advantages of simple preparation, adjustable hydrophilicity, outstanding solvent resistance, great permeation flux, a high retention rate, etc. and is applicable to separation of substances in all the organic solvents and to the fields of pharmaceutical manufacturing, biology, catalyst recovery, etc.

The invention relates to a novel preparation method of a monolithic column stationary phase having gradient distribution, comprising the following steps: 1, pretreating a chromatographic column, 2, carrying out a preparation method of the monolithic column stationary phase having gradient distribution; and 3, preparing the monolithic column stationary phase having gradient distribution by using aspecial magnetic nano material. In the step 3, according to the preparation method disclosed in the step 2, magnetic nanoparticle-doped matrix of the monolithic column is rushed into a pretreated stainless steel tube or capillary tube, a coil or permanent strong magnetism is used to control the magnetic field intensity axially, heating reaction is carried out to solidify the matrix of the monolithic column to allow the magnetic nanoparticles to be distributed gradedly in the monolithic skeleton, so that the monolithic column stationary phase having gradient distribution is obtained. Accordingto the invention, the adjustment of the mobile phase is realized, and the stationary phase is used for gradient separation, so that the invention is suitable for separation of a complex sample; and the system has high column efficiency, high selectivity, and good repeatability of separation, and the preparation is easy to operate.

The invention discloses a separation culture method of laying duck small yellow follicle granular cells. The separation culture method includes following steps: selecting a laying duck, killing the laying duck by bloodletting a jugular vein, respectively using bromogeramine diluent and alcohol to disinfect the body of the laying duck, and separating follicles of 3-8 mm in an ovary; stripping outer-layer blood vessels and connective tissue of the follicles, fixing the follicles, discharging yolk, stripping granular cell layers, and cleaning before centrifuging to abandon supernate, adding an enzymolysis solution for digestion, sieving, cleaning with an M199 culture medium, centrifuging to abandon supernate; adding red blood cell lysis liquid, and centrifuging to abandon supernate; adding an M199 culture medium containing fetal calf serum, suspending granular cells, adjusting density of suspension cells, and inoculating for culture to obtain the laying duck small yellow follicle granular cells. The separation culture method is suitable for both separation of granular cells in big yellow follicles of ducks and separation of small yellow follicle granule cells; the granular cells are high in purity and activity and stable in cell function; the separation culture method has the advantages of simple operation, easiness in repeating and stable result.

The invention relates to an air separator for sucking granular materials by jet flow. The air separator is a reducing pipe and comprises a throat pipe (5), a reducing pipe air inlet (6), a nozzle (7) and a material outlet (8). The air separator is characterized in that negative pressure is generated by changing the flow velocity of air entering the separator, and materials are sucked into a pipeline from the throat pipe (5) positioned on a material inlet; and light materials are separated from heavier materials through granules by regulating the magnitude of air quantity. The invention realizes that pressured working fluids enter a jet cavity from an inlet of a jet flow adsorption feeder to form high-speed jet fluids, and pressure drop is generated through the high-speed jet fluids so that solid granular matters to be added are absorbed from a suction inlet and enter the pressured working fluids, therefore separation is realized; in addition, the air separation disclosed by the invention can be used for the air separation of the solid granular matters and also be used for a water treatment dosing system, thereby replacing the traditional pre-pumping dosing system and the traditional water jet dosing system.

The invention relates to a casing pipe type dura mater dissecting device, which comprises a guiding pipe and a dissector capable of being sleeved inside the guiding pipe, wherein the guiding pipe is a hollow arced pipe with two open ends, the cross section of the guiding pipe is of a bow shape, the dissector is arced under a nature state, the cross section of the dissector is of a bow shape, the dissector is provided with an external dissector shell and an internal dissector inner core, and the dissector is provided with the dissector shell with at least one closed end so as to form a dissecting end. The casing pipe type dura mater dissecting device has the advantages that: the dissector can go into a path along a specific path under the guidance of the guiding pipe so as to effectively prevent deviation and unnecessary skull and dura mater separation, the casing pipe type dura mater dissecting device is high in dissecting efficiency, low in damage rate, simple in structure and simple and convenient to operate, is suitable for the skull and dura mater separation of bone holes of different spacings, and can be used for effectively preventing a milling cutter from breaking dura mater or venous sinus to increase the safety of craniotomy.

The invention relates to a design and application of soil meso-and micro-invertebrate separation equipment based on farmland landscape and ecological function research. The soil meso-and micro-invertebrate separation equipment comprises the following components: an internal hopper, an external hopper, a bulb, an objective table and an animal container, wherein the internal hopper and the external container are embedded and vertically placed; the upper-port diameter and height of the internal hopper are smaller than those of the external hopper; a fixing strip is arranged between the internal hopper and the external hopper so as to ensure that a clearance is reserved between the internal hopper and the external hopper, and the relative positions of the internal hopper and the external hopper are constant; the bulb is positioned at the bottom of the internal hopper; the objective table is arranged at the top of the internal hopper; the animal container is positioned below the bottom outlet of the external hopper and is filled with 75wt% ethanol. Compared with a traditional device, the soil meso-and micro-invertebrate separation equipment is good in stability; a gauze is not used for separation, the problem that soil falls into a lower animal container for receiving worms when soil particles are small can be avoided; when the soil moisture content is high, the moisture can not flow into the lower animal container.

The invention discloses a preparation method for oil and water separation filter paper for naphtha and diesel oil. The method comprises the following steps: dissolving octadecyltrichlorosilane into an n-hexane solution according to a volume ratio, dipping the filter paper into the mixing solution at room temperature, taking out the filter paper and putting the filter paper into a constant temperature drying oven to dry so as to obtain oleophilic hydrophobic filter paper. The method is simple to operate, short in manufacturing period, low in cost and less in energy consumption. The preparation method has good application prospect in application in aspects such as industrial oil and water separation and oil clearance of water.

The invention discloses a technology for recovering solvents from coating waste solvents. The recovered solvents are toluene, butyl acetate and / or xylene. The technology comprises the following steps:desalinized water is used as an extractant to remove ethanol, isopropyl alcohol, water and water-soluble resin, then impurity removal, light component removal, toluene rectification and xylene rectification treatments are carried out, and recovery is performed to obtain the toluene, butyl acetate and / or xylene meeting GB standards. The technology recycles the coating waste solvent, so the environmental pressure of waste-producing enterprises is reduced, and economic benefits are generated.

The invention relates to a temperature-adjustable small and medium-sized soil animal separator researched based on landscape architectures and ecological functions. The soil animal separator comprises the following components: a funnel, a heating table, an object table and an animal container, wherein the funnel is vertically placed and is internally provided with bearing strips, the heating table is placed on the bearing strips, and a gap is formed between the heating table and the wall of the funnel; the object table is placed on the heating table, and a gap is formed between the object table and the wall of the funnel; the upper edge of the object table is lower than the upper edge of the funnel; the animal container is positioned below the bottom outlet of the funnel. The small and medium-sized soil animal separator has the advantages that the stability is excellent; because the soil animal separator does not use a screen for separating, the problem that soil falls into the animal container which is below the soil and is used for receiving worms when soil particles are small can be avoided; when the soil has high water content, water does not flow into the animal container below; and when the environment temperature change is large, the temperature of the heating table can be adjusted by a temperature controller, the separation efficiency of soil animal can be conveniently improved.

The invention provides a method for rapidly separating auricularia auricula strains by the utilization of dry auricles. The method includes the steps that (1), the dry auricles are broken off with the hands to be small pieces; (2), the small auricles are washed in sterile water for the first time, and moisture is sufficiently absorbed through absorbent paper; (3), the small auricles are placed into alcohol with the 75% volume fraction, soaked for 20-25seconds and then sufficiently absorbed through absorbent paper; (4), the small auricles are washed in the sterile water for the second time and sufficiently absorbed through absorbent paper; (5), the small auricles are inserted into a plate PDA culture medium for cultivation and observation at constant temperature; (6), germinated hyphae are picked to be inoculated to a slope PDA culture medium and then cultivated in a pure mode. The method for separating the auricularia auricular strains has the advantages of being easy and convenient to operate, short in consumed time and low in needed cost, the hyphae are high in survival rate, rapid in growth, pure white, sturdy and high in vitality, the application range is wide, and the method is suitable for separating kinds of colloid auricularia auricula strains.

A purifier and a purification method thereof are provided. The purifier is provided with a purification device so that filter pulp is separated into pure liquid and filter dregs after the filter pulppasses through the purification device. The purification device is provided with a filter dreg transferring unit provided with a filter dreg collection unit so that filter dregs left on the purification device are transferred by the transferring unit and collected in the filter dreg collection unit. During filtration, impurities are not left on a filer assembly, but are collected on a non-filter member and discharged, and therefore, the filter assembly is low in contamination, long-time operation of the filter assembly can be effectively ensured, and filtration precision and speed are not affected.

The invention discloses a high-throughput high-retention rate composite nanofiltration membrane preparation method. The preparation method comprises mixing polyetherimide and an organic solvent, carrying out stirring, carrying out standing deaeration to obtain a membrane casting solution, pouring the membrane casting solution on a non-woven fabric, carrying out blade coating and volatilization to obtain a wet membrane, immersing the wet membrane in water, taking out the wet membrane, immersing the wet membrane in an ethene diamine solution for a crosslinking reaction, taking out the membrane, washing the membrane through water, sucking water on the membrane to obtain a crosslinked porous support membrane, fixing the crosslinked porous support membrane between a flat plate and a frame, putting the crosslinked porous support membrane in a constant temperature environment, pouring a water phase aqueous solution into the frame, discharging the solution after the reaction, putting the membrane in a constant temperature environment, removing residual moisture on the membrane surface, pouring a trimesoyl chloride solution into the frame, discharging the solution after a reaction and carrying out drying to obtain the composite nanofiltration membrane. The preparation method has simple processes and can be operated easily. The composite nanofiltration membrane has high throughput, a high retention rate and good membrane stability, can retain micromolecular substances, can be used in a water system and can be used for organic system separation.

A process for extracting isoflavone from soybean includes solvent extraction, vacuum concentration, and column chromatography separation to obtain high-purity soybean isoflavone, and is mainly characterized by using two-step hydrolysis to extract soybean's isoflavone glycoside, isoflavone glycosyl, soybean extract and dye lignin separatedly, which can be used as raw materials of health-care food and medicines.

The invention discloses a device and a process for treating waste mineral oil. The device comprises a filtering and precipitating device, a raw material storage tank, a vacuum film evaporator and at least one molecular distiller which are successively arranged, wherein an oil discharging pipe and a sewage discharging pipe are arranged on the filtering and precipitating device; the oil dischargingpipe is connected to the raw material storage tank; the raw material storage tank is connected with a feeding opening of the vacuum film evaporator through the oil discharging pipe; a first condenser,a second condenser and a vacuum system are successively arranged at the top of the vacuum film evaporator; a reboiler is arranged at the lower end of the vacuum film evaporator; the bottom of the vacuum film evaporator is connected with the top of the molecular distiller through a first process pump; the bottom of the molecular distiller is connected with a product buffer tank; a material buffertank is arranged at the lower end of the molecular distiller. Through the adoption of the device, the waste mineral oil is directionally recycled; the treatment rate of the waste mineral oil reaches up to 99.9%.

A method for separating associated fluorite-rich and low-grade cassiterite from tungsten tailings. The tungsten tailings containing fluorite CaF216-25% and tin-SnO20.1-0.3% are directly put into the flotation column for roughing Fluorspar: Separating fluorspar from calcite and iron-containing pyroxene to obtain fluorspar rough concentrate and anti-enrichment tin-containing tailings; the fluorite coarse concentrate is separated by flotation machine for five times to obtain fluorspar Concentrate products and flotation fluorite tailings; the anti-enrichment tin-containing tailings are separated by two-stage separation, and the sub-concentrate is concentrated and rewashed by shaking table re-election technology to obtain tin rough concentrate products and tin tailings. The invention has simple technological process, can reduce the loss of fluorite and cassiterite in the overflow water at the same time, and is beneficial to the improvement of the comprehensive recycling rate of the fluorite and cassiterite.

The invention discloses a screening method of active pharmaceutical ingredient. The screening method comprises the following steps: 1) primarily determining the active pharmaceutical ingredient: 1.1) obtaining the pathological pharmacodynamic indexes of a pathological body; 1.2) obtaining the maximal pharmacodynamic point moment and the minimal pharmacodynamic point moment of a medicament with active pharmaceutical ingredient to be determined; 1.3) obtaining the whole blood and / or body fluid of the pathological body; 1.4) creating full-fingerprints; 1.5) comparing the full-fingerprints, wherein the part having the maximal contrast in the full-fingerprints is the primarily determined active pharmaceutical ingredient, and the part having the maximal contrast is the part having the maximal chromatographic peak change in the full-fingerprint of the maximal pharmacodynamic point moment and the full-fingerprint of the minimal pharmacodynamic point moment; 2) obtaining the primarily determined active pharmaceutical ingredient; and 3) detecting, screening and determining the active pharmaceutical ingredient. The screening method of active pharmaceutical ingredient can be used for accurately and quickly determining the active ingredient in a traditional Chinese medicine.

The invention relates to a casing pipe type dura mater dissecting device, which comprises a guiding pipe and a dissector capable of being sleeved inside the guiding pipe, wherein the guiding pipe is a hollow arced pipe with two open ends, the cross section of the guiding pipe is of a bow shape, the dissector is arced under a nature state, the cross section of the dissector is of a bow shape, the dissector is provided with an external dissector shell and an internal dissector inner core, and the dissector is provided with the dissector shell with at least one closed end so as to form a dissecting end. The casing pipe type dura mater dissecting device has the advantages that: the dissector can go into a path along a specific path under the guidance of the guiding pipe so as to effectively prevent deviation and unnecessary skull and dura mater separation, the casing pipe type dura mater dissecting device is high in dissecting efficiency, low in damage rate, simple in structure and simple and convenient to operate, is suitable for the skull and dura mater separation of bone holes of different spacings, and can be used for effectively preventing a milling cutter from breaking dura mater or venous sinus to increase the safety of craniotomy.

The invention discloses a method and a device for separating an optical crystal by using two laser beams. The method comprises the following steps of: forming a damage section formed by light damage lines in the optical crystal by using a first laser beam with high peak power and low pulse energy; and acting on the damage section formed by the light damage lines by using a second laser beam with low peak power and high pulse energy so as to separate the optical crystal. The device comprises a two-dimensional working table and two sets of laser processing systems; each laser processing system comprises a Z-axis moving mechanism, and a laser, a beam expansion collimating lens, a first reflection lens and a focusing lens which are positioned on the same light path; and the focusing lenses are fixed on the Z-axis moving mechanisms. In the invention, the optical crystal is separated by using the characteristics that a mechanical action force is absent in the mutual action between the laser and the material, and the material is transparent to laser; therefore, aims of no fragmentation, high separating precision, arbitrary direction separation and no pollution during separation of the optical crystal can be fulfilled. The invention is particularly applicable to separation of potassium dihydrogen phosphate (KDP) optical crystals.

The invention provides a preparation method for a monoamine-grafted-and-modified crosslinked polyimide solvent-resistant nanofiltration membrane. The preparation method comprises the following steps: a, preparing a mixed solution from a solvent and a cosolvent according to a mass ratio of 1: 0.1-5; b, adding 15 to 28% of a polyimide solution into the mixed solution so as to prepare a membrane casting liquid; c, adding 2.5 to 20% of monoamine into the membrane casting liquid and carrying out mixing at 25 to 80 DEG C for 3 to 24 h under stirring so as to guarantee complete grafting; d, preparing a membrane by using a immersion-precipitation phases inversion process, washing the prepared membrane with deionized water a plurality of times and standing the washed membrane for subsequent usage; e, preparing an alcoholic solution of diamine with a concentration of 0.5 to 20%; f, putting the prepared membrane in the alcoholic solution of diamine prepared in the previous step for crosslinking modification for 0.25 to 48 h; and g, after completion of the reaction, soaking and cleaning the membrane in an alcohol solvent so as to obtain the polyamide nanofiltration membrane with excellent performance. The polyimide solvent-resistant nanofiltration membrane prepared in the invention has the advantages of simple preparation, adjustable hydrophilicity, outstanding solvent resistance, great permeation flux, a high retention rate, etc. and is applicable to separation of substances in all the organic solvents and to the fields of pharmaceutical manufacturing, biology, catalyst recovery, etc.

The invention discloses a method for preparing a rigid MOF composite membrane used for nanofiltration of organic dyes, comprising the following steps: pretreating the organic polymer base membrane so that its surface has a functional group-COO-; oxidizing the hydrogen Dissolve sodium, acetic acid and metal salts in water to prepare a metal ion precursor solution; place the obtained base film in the metal ion precursor solution and react at 25±2°C for 4‑6h; add a crosslinking agent solution to continue the reaction 10‑50min, wash to obtain a composite film after the end; dissolve sodium hydroxide and squarylium in water, and under the action of ultrasonic stirring, prepare an organic ligand precursor solution; place the obtained composite film in it at 25±2°C React for 30‑120min; take it out, wash it, and dry it to obtain a rigid MOF composite membrane. The preparation method of the membrane in the invention is simple, excellent in performance, low in cost and easy for industrialization. Moreover, the prepared nanofiltration membrane has good separation performance and stability for organic dyes, so it has broad application prospects in the nanofiltration of organic dyes.

The invention provides a magnetic liquid drop dispersion and extraction method for separating petroleum acid. The magnetic liquid drop dispersion and extraction method comprises the following steps: carrying out silylation hydrophobic modification on an extraction container; preparing magnetic particles coated with an extracting agent in the silylation extraction container; adding a crude oil sample solution into the silylation extraction container and carrying out vortex oscillation to disperse the magnetic particles coated with the extracting agent into the crude oil sample solution to formmagnetic liquid drops; extracting petroleum acid in a crude oil sample; after finishing extraction, taking out raffinate and discharging under the action of an additional magnet; adding a washing solvent into the silylation extraction container and carrying out the vortex oscillation; taking out washing liquid and discharging under the action of the additional magnet; adding a desorption solvent into the silylation extraction container and carrying out desorption; dissolving a liquid-state extracting agent dissolved with petroleum acid through a desorption solvent and removing the magnetic particles; taking out desorption liquid and collecting under the action of the additional magnet. The method provided by the invention is simple and rapid to operate, has less consumption of the solventsand can be used for treating various samples in batches.

The present invention relates to solid phase extraction technology, be the preparation method of the solid phase extraction agent that can be used for plutonium separation, get 3g poly-4-vinylpyridine particle in the round bottom flask, add methyl iodide reagent (analytical grade, Bai Lingwei reagent), in 40 The reaction was stirred at ℃ for 2 h, then rotary evaporated to dryness, and the composition was washed with deionized water for more than 3 times to obtain the desired product. The pyridine solid phase extraction agent provided by the invention has the advantages of large extraction capacity, good selectivity, fast extraction rate, etc., and is especially suitable for the separation of plutonium in plutonium-containing waste liquid.

The invention discloses a garbage classification winnowing machine facilitating environmental protection. The machine comprises a chassis, a bracket, a conveying belt B and a conveying belt A; the bracket is fixed at the bottom of the chassis; a discharge hopper A is arranged on the left side surface of the chassis; the discharge hopper B is arranged on the right side surface of the chassis; a feed hopper is arranged in the left side of the middle part of the front end surface of the chassis; a fan is fixed on the left upper side in the chassis; the conveying belt A and the conveying belt B are horizontally arranged at the middle part of the inner side of the chassis; the left and right ends of the conveying belt A are respectively mounted on the left side of the middle part of the chassisthrough a transmission roller A and a transmission roller B; the horizontal height of the conveying belt B is higher than the horizontal height of the conveying belt A; and the left and right ends ofthe conveying belt B are mounted on the right side of the middle part of the chassis through a transmission roller A and a transmission roller B. Through arrangement of the chassis, the bracket, theconveying belt B and the conveying belt A, the problem of incapability of quickly separating light substances in garbage treatment and transmission is solved.

The invention belongs to the technical field of materials, and particularly relates to a modified silica gel material, and a preparation method and application thereof. The preparation method of the modified silica gel material comprises the following steps: 1) carrying out cross-linking reaction on silane coupling agent modified silica gel and a hydrophilic polymer to obtain hydrophilic modified silica gel; 2) carrying out substitution reaction on the hydrophilic modified silica gel and a non-polar silane reagent to obtain hydrophobic modified silica gel; and 3) carrying out substitution reaction on the hydrophobic modified silica gel and a polar silane reagent to obtain the modified silica gel material. The hydrophilic modified silica gel is formed by introducing a compact hydrophilic polymer coating layer on the surface of the silica gel, so the hydrophilicity of the silica gel is increased; and the hydrophilic modified silica gel is modified by adopting a non-polar silane reagent, and further modification is performed by adopting a polar silane reagent, so that residual silicon hydroxyl on the surface of the silica gel is shielded to a great extent, the tolerance of the material to a high-proportion water phase is widened, the hydrolytic stability of the material is improved, the peak pattern of an alkaline compound is improved, and the service life of the material is prolonged.

The invention discloses a coniferous tree seed collection protection device with the function of removing impurities, and relates to the technical field of separation of collected seeds and impurities in the harvesting process of coniferous pine cones and the personal protection of harvesters, including being set in a The support frame in the middle of the main trunk of the coniferous tree, the seed collector located below the support frame and the seed receiving cover installed above the support frame solve the safety problems of the conifer pine cone harvesters and the difficulty in planting. For the problem of carrying and collecting, the present invention adopts an inflatable cushion with a groove and a seed collector with a spring device and a vibrating device, which effectively reduces the damage received by the harvester after accidentally falling, and effectively prevents the fall from falling. Collect the pine cones to prevent loss and separate the impurities that fall into the seed collection box.

The invention provides a magnetic liquid drop dispersion and extraction method for separating petroleum acid. The magnetic liquid drop dispersion and extraction method comprises the following steps: carrying out silylation hydrophobic modification on an extraction container; preparing magnetic particles coated with an extracting agent in the silylation extraction container; adding a crude oil sample solution into the silylation extraction container and carrying out vortex oscillation to disperse the magnetic particles coated with the extracting agent into the crude oil sample solution to formmagnetic liquid drops; extracting petroleum acid in a crude oil sample; after finishing extraction, taking out raffinate and discharging under the action of an additional magnet; adding a washing solvent into the silylation extraction container and carrying out the vortex oscillation; taking out washing liquid and discharging under the action of the additional magnet; adding a desorption solvent into the silylation extraction container and carrying out desorption; dissolving a liquid-state extracting agent dissolved with petroleum acid through a desorption solvent and removing the magnetic particles; taking out desorption liquid and collecting under the action of the additional magnet. The method provided by the invention is simple and rapid to operate, has less consumption of the solventsand can be used for treating various samples in batches.