189 results about "Micropore filtration" patented technology

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 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 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 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 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 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 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 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.