190 results about "Micropore filtration" patented technology

The invention relates to a multi-layer composite micropore filter separation material, a method for preparing the material and the application thereof, wherein, the preparation method comprises the following steps: (1) the fiber which can be fibrillated is prepared into fully fibrillated fiber material by pulping process; (2) the slurry is obtained after the fully fibrillated fiber material is dispersed in water; (3) advancing to the net and shaping are carried out, a layer of nonwoven fabric is placed on a shaping net, the above slurry is dehydrated on the nonwoven fabric directly for compound molding; (4) drying is carried out for obtaining the product. The product can also be processed by hot press molding. The method can be operated easily, is applicable for application of large scale, the obtained multi-layer composite high temperature resistance micropore filter separation material has the outstanding performance of high temperature resistance, meanwhile the uniformity of the holes is excellent, the average aperture can reach 10nm-1mum, and the method can be used in such fields as preparing filter material, battery septum material, electrolytic capacitor paper and double electric layers capacitor septum, etc.

The invention discloses a preparation method for wet method forming micropore filtration separation material, which includes steps of (1) carrying out pulping process for fibrillatable fiber to prepare fullyfibrillatable fiber raw material; (2) dispersing the fiber raw material into water to obtain paste; (3) uniformly dispersing grain with diameter of 1nm-1mum into water; (4) mixing the grain water dispersing liquid of the step (3) with the paste of the step (2) and uniformly stirring; (5) forming on net and drying. The micropore filtration separation material prepared by the present invention can be used for filtration material, battery diaphragm material, electrolytic capacitor paper and double-electric layer capacitor diaphragm. The invention can effectively increase uniformity of bore diameter distribution, so that grain filling material is not easily to fall off.

The invention relates to a method for removing and recycling SO2 in high-sulphur boiler flue gas and discloses a method utilizing ammonia water as material and recycling desulfuration to prepare ammonium bisulfite with high SO2 / NH3 value and high purity. The method comprises the steps of (1) performing dry dedusting on high-sulphur boiler flue gas, and cooling through wet dust collection, (2) utilizing ammonia water as absorbents to absorb SO2 in flue gas in a triple tandem desulfurizing absorption tower, controlling the absorbing temperature through an exterior circulation cooling mode, preparing ammonium bisulfite solution with high SO2 / NH3 value, and discharging with standard level after water scrubbing and demisting, (3) removing high chemical valence insoluble heavy metal ions such as ferric iron through microfiltration, and (4) removing heavy metal ions through chelating ion exchange resins to obtain products. According to the method, the concentration of SO2 in flue gas after desulfurization is low, SO2 in high-sulphur boiler flue gas is effectively recycled, and ammonium bisulfite solution with high SO2 / NH3 value and high purity is prepared.

The invention relates to a process for treating amantadine bromination waste water and mineral acid and alkali recycling through a bipolar membrane electrodialysis process, which comprises the following steps: firstly, filtrating bromination waste water through micropore filtration film; then pumping the bromination waste water into a salt chamber of the bipolar membrane electrodialysis device, pumping tap water into an acid chamber and an alkali chamber of the bipolar membrane electrodialysis device, and pumping Na2SO4 solution into electrode liquid of the two ends of the bipolar membrane electrodialysis device; and finally, starting the bipolar membrane electrodialysis device and recycling the acid and the alkali. According to the invention, a bipolar membrane electrodialysis technology is used for the treatment of degradation-resistant amantadine bromination waste water, and realizes the recycle of the mineral acid and the alkali in waste water. The process has the following advantages: bromine irons in waste water containing bromine can be removed, the desalination rate is higher than 95 percent, the hydrogen ion concentration is decreased from 2.95 mol / L to 0.003 mol / L below, and avoids secondary contamination; the process enables the degradation-resistant pharmaceutical wastewater to become biochemical degradable organic wastewater, and emits qualified waste water after the biochemical treatment; and the control effectiveness is good, the operation is convenient, and the process has a favorable application prospect.

The invention discloses a method for producing temperature-regulating viscose fibers. The method comprises the following steps: by taking natural cellulose as a raw material, preparing soluble cellulose xanthate by virtue of processes such as alkalizing, aging and yellowing, and dissolving the cellulose xanthate in dilute alkali liquor so as to prepare the viscose, wherein aids are added in the process. According to the equipment and process improvement, the chemical reaction effect and filtering effect are improved, and the aim of improving the quality of the viscose is achieved, so that the aims of adjusting the fineness and improving the physical properties of the product are achieved; and in the process of blending phase change capsule materials, grinding and secondary micro porous filtration are performed. The phase change capsule material is added before spinning and is mixed with the viscose solution to be uniform; and meanwhile, when the viscose fiber is positioned in a macromolecular amorphous form and passes through a low-diameter spinning round hole, proper draft degree and forming process conditions are selected, and the aim of adjusting the fineness of the fibers is achieved. The produced temperature-regulating viscose fibers are low in fineness, high in strength and high in caloric content value and have good bidirectional temperature regulating functions; and the product has the characteristics of moisture absorption and discharge capacities, breathability, sunlight resistance, moth-eaten resistance, anti-static property and simplicity in spinning.

The invention belongs to the environment engineering field and in particular relates to a recycling combination treatment method for regeneration water with high safety. The combination of the recycling combination treatment method of the invention for the regeneration water is that secondary effluent of sewage treatment plants or water reaching to the quality requirements of the similar water is used as the water source and is reused after the ozone pre-oxidation, the coagulation, the precipitation, the sand filtration, the micropore filtration, the ozone oxidation, the activated carbon adsorption and the disinfection. The invention has the characteristics of strong adaptability to the quality change of the effluent, flexible operation mode, high regeneration water effluent safety, good effluent quality and easy user acceptance. The misgivings of regeneration water users on the water safety can be reduced, which is beneficial to the development of the regeneration water market.

The invention discloses a method for producing reagent grade sodium sulfate by using a white carbon black mother solution. The method comprises the following steps of: 1) removing a little amount of solid residue such as white carbon black and the like in the white carbon black mother solution by using a mixed cellulose micropore filtration membrane with thickness phi of less than or equal to 0.15 micron, and preliminarily purifying the white carbon black mother solution into a sodium sulfate solution; 2) treating the sodium sulfate solution obtained in the step 1) by using chelating resin toobtain a 5 to 6 percent pure sodium sulfate solution; 3) performing electrodialytic concentration on the 5 to 6 percent pure sodium sulfate solution obtained in the step 2) to obtain a 15 to 25 percent pure sodium sulfate solution; and 4) performing multi-effect evaporation on the 15 to 25 percent pure sodium sulfate solution obtained in the step 3) to obtain crystal, separating the crystal by using a centrifuge, drying the separated crystal at the temperature of 120 DEG C, and thus obtaining a finished product. The sodium sulfate product prepared by the method has the characteristics of low impurity content, high quality, low moisture content and the like, and is a high reagent grade sodium sulfate product.

The invention relates to a method for preparing animal blood plasma albumen powder, which comprises a process system consisting of animal blood anticoagulant treatment, blood refrigeration, centrifugal separation, membrane concentration, spray drying and tail gas recycling. The method comprises the following steps of: performing anticoagulant treatment on the fresh animal blood with a compound anticoagulant liquid, refrigerating, performing centrifugal separation on the refrigerated product and obtaining blood plasma liquid; performing membrane concentration on the blood plasma liquid, allowing the obtained product to flow to a tail gas recycling device for spray drying, and absorbing blood plasma albumen powder and afterheat in the dry tail gas; performing micropore filtration and spray drying, and obtaining the high-quality animal blood plasma albumen powder. Waste gas generated by the treatment of the tail gas recycling device is directly discharged into the air. The process method reduces the ash content of the animal blood plasma albumen powder from 12 percent to 8 percent, removes odor and increases the spray drying recovery rate from 98 percent to 99.5 percent, so that resources are saved, drying energy consumption is reduced, and the risks of polluting environment are reduced.

The invention discloses a method for efficiently preparing a monocyanamide solution, and is used for solving the problems of high equipment investment, high energy consumption, long production period, high production cost, high requirement on concentration of carbon dioxide, high content of calcium ions and incomplete filtration of cyanamide waste residue of an existing production process of the 50% monocyanamide solution. The method comprises the steps of performing a hydrolytic decalcification process step, adding phosphoric acid to regulate pH value, and performing microporous filtration, and evaporation concentration to obtain a monocyanamide product. The monocyanamide solution is prepared by improving a gas inlet way of kiln gas and applying a microporous filtration method, an ion exchange resin decalcification technology and a rotary thin film scraper steam method. Compared with a domestic traditional process, by adopting the method, the requirement of the traditional process on the concentration of carbon dioxide is reduced, the content of the calcium ions in the monocyanamide product is strictly controlled, the product quality is improved, the production period is shortened, the energy consumption is reduced, and the production cost is reduced, so that the method is suitable for industrial large-scale production and has good social and economic benefits.

The invention mainly discloses a drainage device for shallow silt foundation treatment. The drainage device has the technical scheme that the drainage device comprises drainage pipelines, vacuum equipment, a drainage board and a gridding screen, wherein the drainage board and the gridding screen are arranged at an interval from bottom to top, the drainage pipelines are respectively connected to the middle and both ends of the drainage board and the gridding screen, water inlet holes with microfiltration membranes are respectively formed in the pipe walls of a main drainage pipe and a secondary drainage pipe, and blockage detection devices are arranged on the side walls of the drainage pipelines. The method comprises the following steps of (1) preparing for construction; (2) partitioning a foundation; (3) laying the drainage board and the gridding screen; (4) laying the drainage pipelines; (5) installing the blockage detection devices; (6) installing a water flow sensor; (7) burying observation equipment; (8) performing vacuum drainage. The drainage device has the effects of high drainage efficiency, difficulty in blocking the drainage pipelines, convenience in checking blocked drainage pipelines, time saving, labor saving, energy conservation, environmental friendliness and cost saving, and the bearing capacity of the foundation is increased.

The invention discloses a method for preparing vidarabine monophosphate for injection, which comprises the following steps of: dissolving vidarabine monophosphate into a solvent with heating, adding a proper amount of excipient and active carbon into the solution, filtering the solution to remove carbon, filtering the solution through a micropore filtration membrane, canning the filtrate into a tubular furbenicillin bottle, and putting the furbenicillin bottle into a freeze drier to perform freeze drying. The method is easy for industrialized production, solves the problem of vidarabine monophosphate freeze drying preparation, and ensures stable product quality.

The invention discloses a method for preparing a polyvinyl formal (PVF) micro-filtration membrane with high porosity and random average aperture adjustability. The method comprises the following steps of: dissolving polyvinyl alcohol (PVA) into water, adding secondary alkyl sulfonate, stirring the solution uniformly with heating, and adding any one of sulfuric acid and phosphoric acid for catalyzing; adding any pore auxiliary agent with micro-scale average grain diameter such as sodium silicate, heating the solution to the temperature of between 50 and 60 DEG C with stirring, adding formaldehyde, and stirring the solution uniformly to obtain foamed porous mixture; and injecting the mixture into a cylindrical die or a flaky die, transferring the die into a water bath kettle or a temperature control device, heating the mixture to the temperature of between 80 and 95 DEG C, performing acetalization reaction for 2 to 4 hours, then taking out the solid in the die, putting the solid into aqueous solution of sodium hydroxide and phenyl dimethylamine, removing the residual substances in the solid, rinsing the solid by using clean water, and drying the solid in a drying oven to obtain the white macromolecular PVF micropore filtration membrane with random average aperture.

The invention relates to a packing scale for powder material; the packing scale is suitable for preventing the powder material containing plenty of gas from entering into a package so as to solve the problems that the package cannot be vertically installed on the floor, the rated quantity of material is hard to be packed into the package within the normal time, and the powder flies in every direction; the packing equipment has an excellent using effect and can improve packing efficiency. The packing scale comprises a degassing unloading device, a suction and blowing combination valve set, a vacuum pump and a pneumatic bag clamping lifting mechanism, wherein the degassing unloading device is arranged on a bottom outlet of a material bucket; the suction and blowing combination valve is connected with the degassing unloading device and used for degassing and eliminating blockage by blowing; and the pneumatic bag clamping lifting mechanism is arranged at the bottom of the degassing unloading device. The degassing unloading device comprises an unloading cylinder; the inner wall and the outer wall of the unloading cylinder are provided with integrated micropore filtration cores; the apertures of the filtration core holes are determined according to the size of material particles, ranging from 50 to 1 micron; the outer side wall of the unloading cylinder is provided with an interface communicated with a gap between the inner wall of the unloading cylinder and an inner filtration core; and the interface is connected with the suction and blowing combination valve.

The invention relates to a high temperature resistant micropore filter separation material, a method for preparing the material and the application thereof, wherein, the preparation method comprises the following steps: (1) the fiber which can be fibrillated is prepared into fully fibrillated fiber material by pulping process; (2) slurry is obtained after the fully fibrillated fiber material is dispersed in water; (3) advancing to the net and shaping are implemented; (4) drying is carried out for obtaining the product. The product can be processed by hot press molding again. The step of impregnation or coating bonding resin can be added between step (4) and (5). The method can be operated easily, is suitable for application of large scale, the obtained high temperature resistant micropore filter separation material has the outstanding performance of high temperature resistance, meanwhile the uniformity of the holes is excellent, the average aperture can reach 10nm-1mum, and the method can be used in such fields as preparing filter material, battery septum material, electrolytic capacitor paper and double electric layers capacitor septums, etc.

The invention discloses a method for preparing Fe3O4 nano-magnetic powder by a microemulsion method and preparing the nano-magnetic powder into nanosuspension which is taken as a lymphatic tracer for medicinal lymphadenectomy. The method comprises the following steps: taking ferrous chloride and ferric chloride solution as raw materials to prepare Fe<3+>and Fe<2+> aqueous solution with a certain concentration as an aqueous phase; taking cyclohexane as an oil phase, cetyl trimethyl ammonium bromide as a surfactant and n-butyl alcohol as a cosurfactant to spontaneously form a CTAB / n-butyl alcohol / cyclohexane / saline solution microemulsion system; mixing excessive triethanolamine with the microemulsion system, stirring, placing in a high-pressure kettle, and then burning at the temperature of160 DEG C for 14 hours; and cooling and carrying out magnetic separation or centrifugation on the obtained product, respectively washing with ethanol and water or hydrochloric acid and PEG, and finally carrying out magnetic separation, centrifugation or micropore filtration to obtain the Fe3O4 nano-magnetic powder. The invention has the advantages of simple process, controllable reaction conditions, cheap and available raw materials and the like.

The invention provides a filtration and microflow control device for circulating tumor cells. The device comprises a negative-pressure sample feeding pump and a microflow control chip, wherein the microflow control chip comprises an upper-layer sample feeding layer, a plastic micro-hole filtering film and a lower-layer waste liquid layer; a plurality of filtering holes are uniformly formed in theplastic micro-hole filtering film; the upper-layer sample feeding layer is communicated to a sample test tube; and the lower-layer waste liquid layer is connected to a negative-pressure feeding pump.The invention further provides a preparation process of the filtration and microflow control device for the circulating tumor cells. The preparation process comprises the following steps: preparing the upper-layer sample feeding layer and the lower-layer waste liquid layer, preparing the plastic micro-hole filtering film, assembling the microflow control chip and carrying out integral mounting. The invention further provides a working method of the filtration and microflow control device. The working method comprises the steps of preparing a sample, capturing tumor cells, adding an antibody diluent and carrying out immunofluorescent staining observation and counting. According to the filtration and microflow control device, the cell capturing and authentication functions are integrated, sothat the injury and pollution of tumor cells in the transfer process are reduced; and the device has the characteristics of low cost, simplicity in operation and the like.

A negatively charged microporous filtration medium having a high charge density comprising a porous substrate and a polymerized cross-linked polymeric coating located on the inner and outer surfaces of the substrate. The coating may be formed from a reactant solution comprising negatively charged cross-linkable polymerizeable acrylamidoalkyl monomers and acrylamido cross-linking agents which are polymerized in situ on the substrate. The negatively charged microporous filtration medium are suitable for use as prefiltration membranes for selectively removing protein aggregates from a protein solution.

The invention relates to a filtering and washing device. The device comprises a tank body, a stirring device arranged in the tank body and micropore filtration elements arranged on the lower cover in the tank body, wherein the tube plate of the lower cover of the filtering separation device is connected with a slag-cleaning frame through a hinge; the slag-cleaning frame is provided with more than two slag-cleaning rods which are arranged between the micropore filtration elements on the tube plate of the device; and a suspending ring on one side of the slag-cleaning frame is connected with the inner wall of the filtering separation tank body through a steel wire rope. By using the device of the invention, the solid residues generated by the filtering and washing processes of crystals in the pharmaceutical production can be discharged easier, completely and fast, thus reducing the labor intensity, improve the work environment and increasing the work efficiency.

The invention discloses an integrated treatment device for co-treatment of industrial sewage and waste gas. The device comprises a shell, an ultraviolet spotlight, a heating core, a blocking block anda motor, an inner cavity is formed in the shell, an air conveying pipe is fixedly arranged on the left side surface of the bottom end of the shell, a water guiding pipe is fixedly arranged on the left side surface of the top end of the shell, and an air outlet pipe is fixedly arranged on the right side surface of the top end of the shell. The invention discloses the integrated treatment device for co-treatment of industrial sewage and waste gas. The sewage and waste gas can be guided into the inner cavity at the same time; centrifugal force generated by rotation of the impeller blades and suction force generated by rotation of the fan blades are utilized; sewage is driven to pass through a ceramic filter plate, the second activated carbon filter plate and the microporous filter plate, waste gas is filtered through a gas filter plate, a HEPA filter screen and the first activated carbon filter plate, filtered water is heated through a heating core, the filtered gas is disinfected through high-temperature steam, and the synergistic integrated treatment effect is achieved.

The invention relates to a portable step-by-step water sample suction filtration system. The system comprises two filters, a guide pipe, a suction filtration bottle, a portable box, a first suck-press latex tube, a second suck-press latex tube and a third suck-press latex tube, wherein a corresponding water system micropore filtration membrane is arranged in each filter; the two filters are detachably communicated with upper and lower ports of the guide pipe in a sealed manner respectively; a vacuum pump and a storage battery for supplying electric energy to the vacuum pump through a power switch are placed in the portable box; one end of the first suck-press latex tube and one end of the second suck-press latex tube are detachably communicated with the guide pipe and the suction filtration bottle in a sealed manner, the other ends of the first suck-press latex tube and the second suck-press latex tube are joined and connected to the end part of the third suck-press latex tube communicated with the vacuum pump. By means of the suction filtration system, particle suspended matters / microorganisms with different particle sizes or pore sizes in a water sample can be separated on the field site, following research is met, and besides, the system can be used for collecting water samples filtered step by step.

The invention discloses a method for simultaneously detecting content of six colorants in grape wine. The method comprises the following steps that 1, a sample is prepared, wherein a certain volume of a wine sample to be detected is measured and boiled till the wine sample is dried to the maximum extent, ultrapure water is added for scale volume to the original volume, and the treated sample passes through a micropore filtration membrane; 2, a colorant mixed standard solution is prepared, wherein certain quantities of colorant standard substances are weighed separately, ultrapure water is added for scale volume to a certain volume, obtained colorant standard substance solutions are mixed in use, the mixed solution is progressively diluted to solutions with needed concentrations, and the diluted solutions pass through a water-phase micropore filtration membrane; 3, qualitative and quantitative analysis is conducted through a high performance liquid chromatography-quadrupole-electrostatic field orbitrap mass analysis combined instrument. The method is good in accuracy, high in sensitivity and good in precision when the method is used for detecting the six colorants in the grape wine sample, the recovery rate meets the analysis and detection requirements, and the method can be suitable for detection analysis to colorants in various grape wine.

The present invention relates to water treatment, and is especially integral microporous filtering method and device for treating low permeating oil field water flooding, sewage and high standard water. The device of the present invention is one closed container with one filtering layer of active carbon fiber felt, one 5 micron level polyethylene filtering plate, and one hollow fiber membrane assembly of 0.2-0.4 micron pore size successively packed from the water inlet to the water outlet. The present invention can treat water in different purifying standards and reach different treating amount.

The invention relates to the technical field of membrane separation and particularly relates to a functional monomer screening method for a molecularly imprinted membrane and a preparing method. By adopting a molecular dynamics simulation technique, building a molecular model, calculating parameters, and researching the relation between interaction energy [delta]E between a selected model molecule and functional monomers and spatial conformation, a functional monomer used for synthesis of molecularly imprinted polymer is determined, thus directing designing and preparation of the molecularly imprinted membrane. The molecularly imprinted membrane is prepared by adopting a polymer micropore filtration membrane as a supporting membrane, adopting puerarin as the model molecule and initiating surface modification polymerization through ultraviolet light. The prepared molecularly imprinted membrane has an excellent puerarin molecule recognition performance, is advantaged by saved time and investment and high prediction capability, and is good in separation selectivity.

The present invention discloses porous polymer ultrafiltration or micropore filtration membranes containing Halar (poly(ethylene chlorotrifluoroethylene)) and related compounds and their preparation methods without using toxic solvents. Preferred solvents, coating agents and pore formers are ethyl citrate or triacetin. Membranes may be in the form of hollow fibers or flat sheets, and may include other agents to improve membrane properties such as hydrophilic / hydrophobic balance. Leachable agents can also be introduced into the membrane.

The invention relates to the technical field of natural polysaccharides for in-vivo implantation, in particular to a preparation method of water-soluble alginate for in-vivo implantation. The preparation method comprises the following steps of: taking commercially available food-grade or pharmaceutical adjuvant-grade water-soluble alginate as a raw material, performing microporous filtration and multistage activated carbon adsorption, and then acidifying to form gel; eluting the gel with an alkaline solution for redissolving the gel, and adsorbing the gel with polymyxin B agarose; and separating out alginate with an organic solution in a sterile environment, and vacuum drying to obtain sodium alginate for in- vivo implantation. According to the invention, the synergistic effects of physical adsorption, affinity adsorption and chemical chelation are utilized to remove impurities such as foreign proteins, endotoxin and the like, impurity ions are not introduced in the preparation process, adverse effects of ion residues on product quality are avoided, and the obtained alginate has high purity and can be implanted in vivo; a folded membrane filter element and activated carbon adsorption are used to complete microporous filtration of high viscosity liquid; a two-fluid nozzle is adopted for dispersion granulation, and the method is suitable for industrial batch production.

The invention discloses nitrogen source reinforced oral liquid containing peptide and oligosaccharide and a preparation method thereof, and belongs to health-care products. Main components of the oral liquid comprise soybean peptide powder and soybean oligosaccharide; and the oral liquid contains 20 to 30 percent of soybean peptide powder, 10 to 15 percent of soybean oligosaccharide, 3 to 5 percent of isomaltooligosaccharide and balance of auxiliary material. The method comprises the following steps of: dissolving the soybean peptide powder and the soybean oligosaccharide together to form a material 1, and dissolving the isomaltooligosaccharide, glucose, electrolyte, emulsifier, acid agent and composite vitamin together to form a material 2 for later use; mixing the material 1 and the material 2, supplementing water according to the weight of a formula, adding essence into the mixture, stirring the mixture uniformly, filtering the mixture by using a micropore filtration membrane of 0.1 to 0.22 micron, and homogenizing the filtrate after filtration at the temperature of between 60 and 65 DEG C under the pressure of between 5 and 15MPa; and continuously pumping the homogenized solution into a high-temperature instant sterilization device, sterilizing the solution for 5 to 8 seconds at the temperature of between 135 and 140 DEG C, reducing the temperature of the material to between 80 and 85 DEG C through a heat exchanger, and performing sterile filling to obtain a finished product.

The invention discloses an integrated water purifying filter core for removing fluorine and filtering and belongs to the technical field of drinking water, wherein the integrated water purifying filter core is applicable to be installed in various water purification processing equipment and is used as a device for filtering and water purification. According to the invention, an ''F.F composite molecular sieve'' fluorine-removing filter material produced in Beijing Zhongkejieli Technology Development Co., Ltd. is used as a main fluorine-removing material, ultra-high molecular weight polyethylene is used as a micropore filtering bonding material, and active carbon is used as an auxiliary material for adsorption, smell removal and fluorine removal. The above materials undergo production processes such as mixing, high temperature sintering and the like so as to prepare the micropore tubular water purifying filter core. The production processes contain 11 processes and are suitable for assembly-line batch production, wherein the 11 processes comprise: 1, burdening and delivering out from a warehouse; 2, fully stirring; 3, fitting a die; 4, sintering in a furnace; 5, demoulding and inspecting; 6, drying; 7, drying in the furnace; 8, inspecting again; 9, individually packing; 10, cartonning according to prescription; 11, packing and warehousing.

The invention discloses a method for preparing glyphosate, and the method comprises the following steps: 1) mixing raw material water, a N-Phosphonomethyl aminodiacetic acid and active carbons in certain proportion so as to obtain a suspension, adding the obtained suspension into a pressure reaction kettle, and closing the pressure reaction kettle to carry out oxidation reaction on the suspension, so as to rapidly oxidize the N-Phosphonomethyl aminodiacetic acid; and carrying out sampling analysis on the mass fraction of the N-Phosphonomethyl aminodiacetic acid in reaction liquid, when the N-Phosphonomethyl aminodiacetic acid is completely transformed, stopping feeding oxygen into the reaction kettle, and carrying out pressure relief until the reaction kettle is at ordinary pressure; 2) raising the temperature of the materials subjected to reaction to 80-100 DEG C, filtering the materials by using a microporous filtering device so as to obtain a filter cake I mainly containing the activated carbons and a mother solution I; and 3) carrying out continuous multi-effect crystallization on the mother solution I, separating solids from the mother solution I by using the microporous filtering device so as to obtain a filter cake II and a mother solution II, and drying the filter cake II so as to obtain a glyphosate chemical. The method disclosed by the invention is safe in operation, short in reaction period, high in production efficiency, low in production cost, low in energy consumption, and less in emission of'three wastes'.

The invention relates to a method for synchronous enriching and desalinating bovine serum albumins by using a novel solid phase extractant. The method comprises the following steps: carrying out ultrasonic atomization on a graphene oxide dispersion, allowing the atomized graphene oxide dispersion to go through a 450-550DEG C high temperature furnace, drying the obtained atomized graphene oxide dispersion, and collecting the dried atomized graphene oxide dispersion to obtain a graphene sphere solid phase extractant; adding solid sodium chloride powder to a bovine serum albumin solution, allowing the salt-containing protein solution to go through a solid phase extraction column, leaching the salt-containing protein solution, carrying out vacuum pumping until the column is dry, eluting the dried salt-containing protein solution, and collecting the obtained eluate; and carrying out micro-porous filtration on the eluate, and carrying out AKTA-Start analysis detection. The graphene microsphere solid phase extractant prepared in the invention has the advantages of simple technology, low cost, large specific surface area, realization of convenient, fast and high-dosage enrichment of proteins, realization of synchronous implementation of enrichment and desalination, provision of an economic and rapid new method for desalination of the proteins, and great application potential, and has an obviously better anti-pressure ability than commercial adsorbents.