540 results about "Specific adsorption" patented technology

The invention provides a moisture-resistant and high-temperature-resistant wire and a preparation method and application thereof. And each wire comprises a conductor, and a mica insulating layer, an inorganic fiber insulating layer, a high-temperature-resistant insulating paint layer, a molecular sieve moisture-resistant layer and an outer protective layer which are sequentially coated outside the conductor from inside to outside. The heat-resistant grade of the moisture-resistant and high-temperature-resistant wire can reach 600 DEG C; the characteristics of specific adsorption of the nanoscale molecular sieve on water vapor and desorption in a heating state are combined, so that the water vapor blocking function is achieved in a high-humidity environment, desorption can be achieved at a high temperature to remove residual water molecules, insulation failure caused by water vapor permeation can be reduced, the reliability is greatly improved, and the service life is greatly prolonged; good insulation performance can still be maintained after high-frequency vibration; the cable can be used in a high-temperature, high-humidity and high-frequency vibration environment, and the high-temperature resistance, the moisture resistance and the vibration resistance of a signal or power transmission wire are improved.

The invention provides a nylon 6 nanofiber virus-removing filtering membrane and a preparation method and application thereof.The nylon 6 nanofiber virus-removing filtering membrane comprises a base material and a nylon 6 nanofiber membrane compounded to the surface of the base material, the average pore size of the virus-removing filtering membrane is 20 nm, the virus-removing filtering membrane plays a role in blocking parvoviruses, the surface of the virus-removing filtering membrane is charged, and the surface of the virus-removing filtering membrane is not prone to being damaged. Proteins with the same charges on the surface can be prevented from adhering to the surface of the fiber. In the preparation process of the virus-removing filtering membrane, the nylon 6 nanofibers with a certain diameter range are selected and compounded on the surface of the base material in a stable dispersion state, the uniform microporous virus-removing filtering membrane is prepared, the effect that parvoviruses are blocked and protein molecules are not easily intercepted is achieved, the hydrophilicity of the nylon 6 nanofibers is relatively good, and the virus-removing filtering membrane has a good application prospect. The non-specific adsorption of the filtering membrane on the protein is reduced; the nylon 6 nanofiber virus-removing filtering membrane can be applied to the field of biological medicine products, and has important significance on separation and purification of biological preparations.

The invention relates to the technical field of immunodetection and immunodiagnosis, in particular to a chemiluminescence substrate solution, a chemiluminescence detection kit and a detection method. The chemiluminescent substrate solution comprises a substrate solution 1, or comprises the substrate solution 1 and a substrate solution 2, the substrate solution 1 comprises sodium hydroxide, a surfactant and a blue light absorbent for absorbing blue light with the wavelength of 400-500 nm; the substrate solution 2 comprises inorganic acid and hydrogen peroxide. According to the application, the blue light absorbent is added into the chemiluminescent substrate liquid, so that blue light emitted by acridinium ester can be absorbed, a luminescent signal is reduced, and particularly, the luminescent value of a background caused by non-specific adsorption is reduced, so that the signal-to-noise ratio is increased.

The invention discloses a novel herpes zoster vaccine composition and a preparation method, and belongs to the technical field of vaccines. The novel herpes zoster vaccine composition comprises gE protein and an adjuvant, the adjuvant is selected from at least one of an aluminum salt adjuvant, a saponin adjuvant, a TLR pathway agonist, an STING pathway agonist, an emulsion adjuvant and a liposome adjuvant. The invention also provides a preparation method of the composition. Compared with the prior art, the gE protein prepared by the method disclosed by the invention has the advantages that a protective matrix is jointly constructed by saccharides capable of forming a glassy state and a buffer system, and conformation is fixed through hydrogen bond replacement and vitrification in freezing and drying processes, so that interface-induced folding and aggregation are reduced; a small amount of surfactant weakens air-liquid and solid-liquid interfacial tension, terminal low-adsorption filtration reduces non-specific adsorption loss, and the monomer state and immunogenicity are maintained after redissolution.

The invention discloses a zwitterionic polymer, an electrochemical sensor and a preparation method and application of the zwitterionic polymer, the zwitterionic polymer is a sulfobetaine type zwitterionic polymer and has high hydrophilicity and electric neutrality, and a hydration layer can be formed on the surface of the zwitterionic polymer through the solvation effect, the hydrogen-bond effect and the like of charged functional groups. The surface of the hydration layer can effectively resist non-specific adsorption, has high anti-pollution performance, and has huge application potential in the field of anti-pollution electrochemical sensors. The invention further provides an electrochemical sensor, the anti-fouling layer formed by the zwitterionic polymer on the electrochemical sensor can effectively resist non-specific adsorption, has high anti-fouling performance, and can reduce and eliminate signal interference in actual sample detection, so that sample pretreatment work is reduced, and the detection accuracy is improved. The method has the characteristics of high anti-interference capability, good reproducibility and the like in chloramphenicol detection.

The invention provides an electrochemical biosensor based on ultrasonic bidirectional driving and a detection method, and belongs to the technical field of biosensing. The sensor comprises a porous membrane and an ultrasonic bidirectional driving unit, and a probe capable of specifically capturing a target object is fixed in a pore channel of the porous membrane; the ultrasonic bidirectional driving unit is composed of a first ultrasonic transducer and a second ultrasonic transducer which are symmetrically arranged on the two sides of the porous membrane, and can synchronously execute reverse power gradient change to form alternately changing pressure difference on the two sides of the membrane so as to drive liquid to repeatedly penetrate through the porous membrane. The detection method comprises the steps of to-be-detected liquid injection and ultrasonic bidirectional driving, ultrasonic auxiliary cleaning and electrochemical detection. The problems of insufficient probe utilization rate, low mass transfer efficiency and non-specific adsorption of a traditional passive diffusion mechanism are solved by utilizing bidirectional ultrasonic active driving force, the detection sensitivity, speed and signal-to-noise ratio are remarkably improved, and the method is suitable for rapid and high-sensitivity quantitative analysis of various analytes.

The invention discloses a preparation method of an ultra-stable brush-shaped organic silicon microsphere coated modified pigment. The method comprises the following steps: weighing raw materials, preparing a pre-emulsified mixed solution, preparing a composite pigment of an organic silicon resin coated pigment, and preparing the brush-shaped organic silicon microsphere coated modified pigment. The preparation method is simple in process and easy to operate, diversified functions such as antibacterial property and specific adsorption resistance can be endowed to the brush-shaped composite pigment particles by selecting or combining the grafting monomers, the stability of the composite pigment particles can be further improved through hydrophilic groups rich in a grafted polymer chain, and the service life of the composite pigment particles is prolonged. The organic silicon resin layer with various excellent performances such as UV radiation resistance and corrosion resistance can also improve the performance of the coated pigment in a specific application system, and the brush-shaped composite pigment particles prepared by the method have a wide application prospect in the field of industrial products such as high-quality functional coatings and the like.

To provide a resin particle that is resistant to non-specific adsorption when used for detecting a target substance such as an antigen, in particular, to provide a resin particle exhibiting high sensitivity when detecting the target substance using a fluorescence depolarization method.SOLUTION: A resin particle has a europium complex, wherein the resin particle has a core-shell structure, wherein the resin particle has a core portion that contains a specific copolymer, and the resin particle has a shell portion that contains a specific polymer, wherein at least one of the core portion and the shell portion has a crosslinked structure.SELECTED DRAWING: Figure 1

The invention discloses a lysate for extracting plant DNA (deoxyribonucleic acid) containing polysaccharide and polyphenol. The lysate comprises the following components in percentage by weight: 50 to 500 mmol / L of buffer solution, 1 to 2 mol / L of chloride, 2 to 5 percent of surfactant, 10 to 50 mmol / L of metal ion complex and 10 to 100 mmol / L of antioxidant. The invention provides a method for rapidly, simply and conveniently extracting high-quality and high-yield DNA from various plant materials by utilizing the specific adsorption effect of a purification column on DNA. The whole operation process of the method is only 30-40 min, the process is simple, convenient and rapid, and a reference mode is provided for workers in the field of related plant DNA.

The present invention discloses an adiponectin detection kit and a preparation method thereof, wherein the adiponectin detection kit comprises an R1 reagent and an R2 reagent; the R1 reagent comprises the following components: a buffer solution, an electrolyte, a fusogen, a surfactant and a preservative; the R2 reagent comprises the following components: anti-adiponectin monoclonal antibody coated latex particles, a buffer solution, a protective agent, a stabilizer, a preservative and a surfactant; wherein the surfactant is selected from one or two of Tetronic 1307 and castor oil polyoxyethylene ether. The kit of the present invention not only enhances the anti-interference ability of the reagent to special samples such as chyle and lipid turbidity samples, reduces the interference of nonspecific adsorption, improves the accuracy of sample testing, but also enhances the repeatability and stability of the latex reagent by adopting a new surfactant combination in combination with other components in the kit.

The invention relates to the technical field of biochemical engineering, and discloses a trans-ferulic acid difunctional monomer molecularly imprinted polymer as well as a preparation method and application thereof. The method comprises the following steps: preparing a trans-ferulic acid solution; the preparation method comprises the following steps: averagely dividing a trans-ferulic acid solution into a first trans-ferulic acid solution and a second trans-ferulic acid solution, adding methacrylic acid into the first trans-ferulic acid solution, then stirring and mixing, adding acrylamide into the second trans-ferulic acid solution, then stirring and mixing, mixing the first trans-ferulic acid solution and the second trans-ferulic acid solution to obtain a mixed solution; adding a cross-linking agent and azodiisobutyronitrile into the mixed solution, introducing nitrogen, sealing, heating to a reaction temperature, and stirring for reaction to obtain a polymeric material; and washing off the trans-ferulic acid from the polymeric material, washing to be neutral, heating and drying in vacuum to obtain the trans-ferulic acid bifunctional monomer molecularly imprinted polymer. The imprinted polymer can realize high-efficiency specific adsorption, and trans-ferulic acid can be separated and purified on a large scale through solid-phase extraction.

The invention relates to a method for extracting rare earth elements based on a biological separation method, and relates to the technical field of rare earth element separation and extraction. In order to solve the problems of high pollution and poor selectivity of a traditional chemical method and low adsorption capacity, insufficient stability and the like of a biotechnology, the rare earth ion adsorbent is prepared by screening microbial strains or biomolecules with high affinity, utilizing the specific adsorption or metabolic acid production dissolution effect of surface functional groups of the microbial strains or biomolecules on rare earth ions and combining biological material modification and a combined process. And efficient enrichment and selective separation of target elements in low-grade rare earth ore, multi-metal complex ore and rare earth-containing wastewater are realized. According to the technology, key parameter regulation and control are optimized through a process kinetic model, energy consumption and environmental pollution are reduced, meanwhile, the rare earth recovery purity and process stability are improved, and an innovative solution is provided for green and sustainable development of rare earth resources.

The invention relates to the technical field of biological detection, and provides a kit and a method for rapidly detecting a platelet antibody by utilizing a phytolectin solid-phase adsorption method. The detection kit provided by the invention comprises a reaction plate which is coated with phytolectin and adsorbs platelets. According to the method, the platelet of multiple persons is adsorbed by utilizing the non-specific adsorption capacity of the phytolectin, and the adsorbed platelet is directly freeze-dried to the bottom of a microwell plate. During use, a detection result can be obtained only by adding detected plasma / serum into the reaction plate for incubation and then adding an anti-human globule reagent and indicating red blood cells, so that intermediate links of detection are reduced, and standardization and automation of detection are facilitated.

The invention provides a high-concentration volatile organic compound shallow cooling adsorption and desorption method based on filling type adsorption, and belongs to the technical field of waste gas treatment. According to the method, the pore structure parameters of a model adsorption material with concentrated pore size distribution and the static adsorption isotherm and dynamic penetration curve of VOCs at different temperatures are tested; a linear relation equation of critical aperture and critical pressure is established through fitting, a correlation equation of the critical aperture, temperature and partial pressure is constructed, dynamic adsorption capacity is calculated, and the low-temperature strengthening method suitable for dynamic adsorption is determined by combining a shallow cold adsorption and desorption strategy. According to the method, a ternary matching relation equation among VOCs partial pressure, adsorbent aperture and adsorption temperature is constructed, the critical aperture under a specific adsorption condition is calculated, a low-temperature enhanced VOCs shallow cold adsorption and desorption technology is developed, the desorption difficulty is reduced while the pore volume utilization rate and the adsorption capacity are improved, and a support is provided for adsorbent type selection and adsorption technology optimization.

The invention relates to a quaternary ammonium salt modified strong anion monolithic column, and discloses a monolithic column material, and quaternary ammonium salt groups are grafted on the internal surfaces of pores and channels in the monolithic column material. The quaternary ammonium salt group exists in the form of EP-OCH2CH (OH) CH-N + R1R2R3. The monolithic column prepared by the invention is rich in hydroxyl groups, has excellent compatibility to an elution object containing biomacromolecules, has excellent specific adsorption capacity for nucleic acid substances, and is suitable for enrichment and separation of DNA and / or RNA substances.

The invention discloses a sandwich type photoelectrochemical sensor for detecting acrylamide and a preparation method thereof, a TT-Por (Co)-COF modified ITO electrode is used as a first layer, the first layer is used for selectively adsorbing AAm in a sample solution to serve as a sandwich layer, and after affinity adsorption is completed, the sandwich layer is used for selectively adsorbing AAm in the sample solution; an acrylamide aptamer marked by CdTe quantum dots is continuously added to the surface of the photoelectrode to serve as a signal incubation layer. According to the sandwich type sensor design, the property of a TT-Por (Co)-COF framework is fully utilized to realize specific adsorption of AAm, and quantum dot modification is ingeniously combined to enhance the heterojunction photoelectric conversion efficiency, so that the detection signal is effectively improved, and the quick response and high selectivity of the sensor to target molecules are ensured. In actual samples, such as acrylamide detection of potato chips and coffee, the sensor shows good performance, efficient and accurate detection can be realized, and a new direction is provided for developing a novel food processing harmful byproduct sensing method.

The invention discloses an MOF-loaded tobacco cellulose aerogel material as well as a preparation method and application thereof, and relates to the technical field of composite materials. Wherein the MOF-loaded tobacco cellulose aerogel material presents a loose and porous appearance, and comprises tobacco cellulose aerogel and an MOF material coated on the surface of the tobacco cellulose aerogel. According to the preparation method, the MOF material is generated on the surface of the tobacco cellulose aerogel in situ, so that a large amount of MOF material is exposed on the surface of the tobacco cellulose aerogel. Through specific adsorption of the MOF material, the effect of efficiently removing the organic dye Congo red by the MOF-loaded tobacco cellulose aerogel material is achieved.

The invention relates to the technical field of filler preparation, and discloses an analysis filler for separating glycosylated hemoglobin and a preparation method thereof.The analysis filler for separating glycosylated hemoglobin is obtained by synthesizing nonporous Polymer microspheres of 5 micrometers through a dispersion polymerization method, conducting hydrophilic treatment on the surfaces of the Polymer microspheres to obtain Polymer base balls and finally introducing ion exchange groups to the Polymer base balls. The hydrophilicity of the surface of the matrix is enhanced through hydrophilization treatment, non-specific adsorption is reduced, meanwhile, the swelling property of the filler in water is not affected, and the mechanical strength is not affected. The glycosylated hemoglobin analysis filler which is uniform in granularity, good in separation effect and long in service life can be obtained through the preparation method of the analysis filler.

The invention provides a pepsinogen II determination kit and a quantitative determination method, the kit comprises a reagent R1 and a reagent R2, the reagent R1 comprises a luminous donor molecule labeled pepsinogen II first antibody and a reaction buffer solution; and the R2 reagent comprises a light-emitting receptor molecule labeled pepsinogen II second antibody and a reaction buffer solution. A double-antibody sandwich structure marked by a luminescent donor and a luminescent receptor respectively is adopted, binding and luminescence can be completed in a liquid phase, solid phase coating and subsequent multi-step washing are not needed, real homogeneous detection and one-step incubation are achieved, the operation process is simplified, the detection time is shortened, and a full-automatic platform is adapted; and an improved buffer system can inhibit non-specific adsorption and reduce heterotropism interference such as RF / HAMA, so that the detection accuracy and repeatability are improved.

The invention provides a synthesis method of adsorption resin for removing immune globulin, and relates to a high polymer material synthesis technology, polyethylene glycol (PEG) or sulfobetaine (SBMA) is grafted through RAFT polymerization, the thickness of a grafting layer is 50-150nm, the nonspecific adsorption capacity of albumin is less than 5ng / cm < 2 >, photosensitive groups (such as phenyl azide) and ultraviolet light (254nm) are introduced to trigger crosslinking, and the coating shedding rate is less than 0.5% / time. According to the present invention, the cyclic stability is improved by 2 times, the Protein A directional capture antibody is grafted on the surface of the acrylic resin grafted with the polyethylene glycol or sulfobetaine, the IgG adsorption capacity achieves 150 mg / g, the specificity is more than 95%, the polyethylene glycol (PEG) is grafted on the surface of the magnetic particle by using ATRP / RAFT controllable polymerization, the organic solvent use amount is reduced by more than 80%, and the product adsorption capacity achieves 150 mg / g.

The invention relates to the technical field of water pollution prevention and control and the technical field of new energy, and discloses an electrochemical baffle plate device and method for uranium-containing wastewater treatment and uranium recovery. The device comprises a reactor box body, the reactor box body is divided into a plurality of compartments by electric baffle plates, and each compartment is internally provided with a pair of cathode and anode electric baffle plates; and the cathode and anode electric baffle plates are respectively fixed through an electrode groove in a waterproof manner. The baffle plates divide the box body into a plurality of compartments, each compartment is divided into an upper flow chamber and a lower flow chamber, and the cathode and anode baffle plates are connected with an adjustable power supply through wires. Single-chamber dual-electrode electrochemical reaction is used as a basic unit, specific adsorption of a functionalized electrode material and an electrochemical in-situ reduction function are efficiently coupled through electrode material modification, electrode configuration design and electrode arrangement optimization, meanwhile, electrodes are embedded in a matrix mode, a diversion function is achieved, and the electrochemical in-situ reduction function is achieved. And efficient removal and resource recovery of uranium ions in the wastewater are realized.

The invention relates to the technical field of bioengineering, in particular to an exosome separation material with CLIKKPF as a ligand and a preparation method of the exosome separation material. A novel exosome affinity medium is developed by utilizing the Ca < 2 + > dependency recognition characteristic between CLIKKPF and PS, specific adsorption of the exosome is realized by virtue of a water-soluble polymer and a brush-like structure thereof in combination with polypeptide CLIKKPF, and meanwhile, rapid separation of the target exosome is realized by utilizing nano magnetic beads as supporting particles.

The invention discloses a construction method and application of an electrochemical luminescence (ECL) biosensor based on a cell membrane hydrogel antifouling interface, and belongs to the technical fields of photo / electrochemical analysis, interface antifouling and biosensing. According to the invention, the cell membrane hydrogel is used as an efficient antifouling interface, so that non-specific adsorption of interfering proteins in a sample to be detected is hindered, and the service life of the biosensor is prolonged. Meanwhile, a luminophor copper nanosheet and a quencher MnO2 nanosheet are both introduced into the cell membrane hydrogel, in the presence of alkaline phosphatase (ALP), L-ascorbic acid-2-trisodium phosphate is catalyzed and hydrolyzed into ascorbic acid, and then MnO2 is reduced to recover ECL emission of the copper nanosheet. Therefore, the ECL signal of the biosensor is in a rising trend along with the rising of the ALP concentration. Based on this, the constructed ECL biosensor realizes sensitive detection of ALP, the linear range is 10 <-5 >-10 < 4 > U / L, and the detection limit is as low as 3.4 * 10 <-6 > U / L, which indicates that the ECL biosensor has potential application in clinical diagnosis.

The invention belongs to the technical field of photocatalytic materials, and particularly relates to a visible light photocatalytic composite material and a preparation method thereof.The visible light photocatalytic composite material is prepared from, by weight, 10-50 g of magnetic nanometer cores, 20-80 g of TiO2 precursors, 20-80 g of stabilizers, 40-100 g of g-C3N4 precursors and 50-200 g of modifiers, and the visible light photocatalytic composite material is prepared on the basis of efficient photocatalytic performance and a magnetic separation function. According to the preparation method, the photo-induced electron-hole separation efficiency is improved through heterojunction, magnetic Fe3O4 and TiO2 / g-C3N4 are organically combined to play a role in degrading organic pollutants, and meanwhile, specific adsorption and reduction of heavy metal ions are realized through surface functional modification; the problems of narrow visible light response range, difficulty in catalyst recovery, poor heavy metal selective removal effect and the like in the prior art are solved.

The invention discloses an attapulgite-fly ash composite adsorbent as well as a preparation method and application thereof, and the preparation method comprises the following steps: crushing, grinding and screening natural attapulgite, mixing with dilute sulphuric acid, carrying out constant-temperature oscillation treatment, washing to remove residual dilute sulphuric acid after reaction, filtering and drying to obtain acidified attapulgite; the preparation method comprises the following steps: adding acidified attapulgite into deionized water, heating and stirring, adding lanthanum chloride heptahydrate and polyaluminum chloride powder, and dropwise adding ammonia water at the same time to realize loading of lanthanum and aluminum on the surface of the acidified attapulgite; after heating and stirring, filtering and drying to obtain modified attapulgite; and mixing the modified attapulgite with fly ash, then carrying out mechanical grinding treatment, putting the ground sample into a tubular furnace, and carrying out anaerobic roasting to obtain the attapulgite-fly ash defluorination adsorbent. The attapulgite-fly ash defluorination adsorbent prepared by the invention has relatively strong selectivity and specific adsorption effect on fluorine ions in wastewater discharged by a chemical plant, and has renewability.

The invention relates to an efficient enrichment method for low-concentration bacteriophages in river and lake water bodies, which remarkably improves the recovery rate and the concentration multiple of the bacteriophages through a multi-stage synergistic technology in combination with physical interception, chemical precipitation and biological targeted adsorption. The method specifically comprises the following steps: pretreatment: removing large particles and suspended solids through gradient filtration and low-speed centrifugation; ultrafiltration concentration: adopting a hollow fiber ultrafiltration membrane with the molecular weight cut-off of 30-100 kDa, and realizing 10-50 times concentration under the pressure of 0.1-0.3 MPa; chemical precipitation strengthening: optimizing synergistic precipitation conditions of PEG and NaCl, and reducing phage inactivation in combination with low-temperature standing; specific adsorption of host bacteria: combining the host bacteria in the logarithmic phase with bacteriophage according to the volume ratio of 1: 100, and carrying out pH regulation and control elution to obtain a high-purity enriched solution. The method has the advantages that the total concentration multiple reaches 500-1000 times, and the recovery rate is gt; the activity retention rate is gt; and the method is suitable for a complex water body environment. Through a multi-technology combination strategy and targeted adsorption design, an efficient tool is provided for environmental monitoring, phage therapy and microbiological research.

The invention relates to the technical field of radiation protection devices, in particular to a Po-210 protection device for a high-concentration scene and a use method of the Po-210 protection device. The protection device comprises a protection head sleeve, a peeping window is arranged on one side of the protection head sleeve, a protection filter box is arranged on the side, provided with the peeping window, of the protection head sleeve in a matched mode, and an air feeder is arranged at the air inlet end of the protection filter box in a matched mode. The protective filtering box comprises a filtering shell, an inner cavity of the filtering shell is filled with impregnated carbon, the impregnated carbon is a material prepared through impregnation treatment of polonium specific adsorption metal, when the protective headgear is worn outside the head of an operator, gas inhaled by the operator can be treated through the protective filtering box, Po-210 in a gas passing space can be effectively filtered, and therefore the gas passing space can be effectively filtered. And air is actively input into the protection device, so that the ventilation resistance increase caused by a filter material in the protection filter box is effectively avoided, smooth breathing of an operator is ensured, and the protection device can be used for safety protection of the operator in a scene that high-concentration Po-210 exists in an air space when a fourth-generation advanced fast reactor pipeline leaks. The use method is based on the protection device.

The invention discloses a monolithic column material. Primary amine groups or secondary amine groups or tertiary amine groups are grafted on the inner surfaces of pores and channels in the monolithic column material. The primary amine group or the secondary amine group or the tertiary amine group exists in the form of EP-OCH2CH (OH) CH-NR1R2. The monolithic column prepared by the invention is rich in hydroxyl groups, has excellent compatibility to an elution object containing biomacromolecules, has excellent specific adsorption capacity for nucleic acid substances, and is suitable for enrichment and separation of DNA and / or RNA substances.

The invention relates to the technical field of n-butyl acrylate recovery, in particular to an n-butyl acrylate condensation recovery washing system and a washing process thereof.The n-butyl acrylate condensation recovery washing system comprises a condensation recovery device, a controller, a washing device and a supporting frame, and the condensation recovery device comprises a condensation tank, a cooler, a cooling pump and a conveying pipe. The metal organic framework adsorption particles and the pulse back flushing device are combined, so that specific adsorption of n-butyl acrylate molecules is realized, n-butyl acrylate waste gas released by heating enters a plurality of spiral condensation pipes, the heat exchange area of the waste gas and cooling liquid is increased, efficient recovery of liquid n-butyl acrylate is realized, and the recovery rate of the liquid n-butyl acrylate is increased. A hollow fiber membrane in the washing device enables fine gas flow to form thin layer flow on the surface of a membrane hole, and a plurality of nozzles realize uniform dispersion of micron-sized liquid drops in a spiral washing pipe, so that water is in full contact with waste gas, and therefore, spirally rising thin layer flow gas is washed with water, and residual n-butyl acrylate in the waste gas is removed.

The invention discloses a high-hydrophilicity macroporous microsphere and a preparation method thereof, and the preparation method comprises the following steps: firstly, preparing a polystyrene seed microsphere and swelling; styrene, divinyl benzene and vinyl ester monomers are added for a polymerization reaction, then alcoholysis is carried out, and macroporous microspheres with primary hydrophilic groups on the surfaces are obtained; and finally, modifying a secondary hydrophilic group to obtain the high-hydrophilicity macroporous microsphere. The high-hydrophilicity macroporous microsphere provided by the invention is excellent in comprehensive performance, the surface of the microsphere is completely covered with the high-hydrophilicity macroporous microsphere through primary and secondary hydrophilic groups, and the hydrophilic groups are directly connected with the microsphere through chemical bonds, so that the high-hydrophilicity macroporous microsphere has good stability and can effectively reduce non-specific adsorption of base spheres and improve the recovery rate of protein purification; the preparation method of the high-hydrophilicity macroporous microspheres provided by the invention is simple and efficient, has wide raw material sources, can be used for preparing fillers such as affinity chromatography fillers, ion chromatography fillers, composite mode chromatography fillers and the like, and has wide application prospects and good industrialization conditions.