42results about How to "Applicable separation" patented technology

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 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 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 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%.

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 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 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.