116 results about "Filtration" patented technology

The invention discloses a rapid treatment method for a fracturing flowback fluid. The rapid treatment method comprises: (1) pumping a fracturing flowback fluid into an electron beam irradiation chamber, and staying for 20-120 s in the electron beam irradiation chamber; (2) adding a coagulant and a flocculant into the sewage treated by the electron beam irradiation chamber, and clarifying in a flocculation precipitation pool; (3) feeding the water treated by the flocculation precipitation a precision filtration pool, and carrying out fine filtration; and (4) collecting the water filtered by theprecision filtration pool in a clear water pool. According to the present invention, the gel breaking stage uses physical gel breaking so as to achieve clean gel breaking and greatly reduce the sideeffects of external agents, such that the reuse quality of the fracturing flowback fluid is good, and the fracturing flowback fluid is safe; the gel breaking time is shortened from 5-120 min to 20-120s so as to greatly improve the gel breaking speed; and compared with the traditional chemical gel breaking method and the biological gel breaking method, the method of the present invention simplifyfeeding equipment and other supporting equipment, reduces the occupation area, and reduces the complexity of manual operation.

The invention provides a sludge-based adsorbent used for desulfurization and demercuration of flue-gas and a preparation method thereof. The sludge-based adsorbent employs municipal sludge and/or papermaking sludge as a raw material. The preparation method comprises the following steps: adding an activator and a physical conditioning agent into sludge slurry and carrying out mixing under stirring and mechanical dehydration; carrying out grinding and screening after drying; and carrying out physical activation after pyrolysis in an inert atmosphere so as to prepare the sludge-based adsorbent. According to the invention, the sludge slurry is used as a raw material, and uniformity of the activator and the physical conditioning agent is improved by using a wet method and the means of mixing; the activator and the physical conditioning agent can reduce repulsive interaction and hydrophilic interaction among electronegative sludge particles, and a porous lattice structure with a hard texture and good permeability is formed in a sludge cake obtained after pressure filtration and dehydration; the prepared adsorbent can be used for desulfurization and demercuration of flue-gas; and the preparation method has the advantages of simple procedures, easily controllable conditions, capacity of realizing harmony and unity of sludge treatment and resource utilization and good economic benefits, environmental benefits and social benefits.

A water evaporation system and method for disposing of excess water left over from oil or gas drilling, fracturing, and production operations and from other wastewater producing operations. The system comprises a pumping system for pumping the wastewater from a pond through a filtration system and then to one or more nozzle arrays attached to cables suspended over the pond.

The invention discloses a method for comprehensively extracting fucoxanthin and brown alga polyphenol from gulfweed, which comprises the following steps: carrying out repeated freeze-thawing and centrifugation on fresh gulfweed or frozen reserved gulfweed to control the water content of brown alga; adding an organic reagent into the seaweed, leaching in a dark place for 1-24 hours, carrying out vacuum filtration to obtain a leaching solution, repeating the leaching operation until the leaching solution is colorless, merging the leaching solutions, concentrating the leaching solution until abundant precipitate appears in the solution, and filtering to remove the precipitate and obtain the filtrate; crystallizing the filtrate at low temperature, and filtering to obtain fucoxanthin; and adding a fat-soluble solvent into the filtrate, carrying out repeated liquid-liquid extraction until the fat-soluble solvent layer is colorless, merging the fat-soluble solvent layers of multiple extraction processes, and carrying out low-temperature concentration until a greenish yellow solid precipitates in the solution, thereby obtaining the brown alga polyphenol extract. The method has the advantages of high raw material utilization ratio and high extraction efficiency, and is simple to operate.

The invention relates to a filter, which comprises a filter shell, wherein the upper part of the filter shell is provided with an air inlet pipe, and the lower part of the filter shell is provided with a blow-off pipe. The filter is characterized in that a filter core is arranged inside the filter shell and comprises an upper supporting plate and a lower supporting plate; a foldable annular filter screen is arranged between the upper supporting plate and the lower supporting plate; an air outlet pipe is arranged on the lower supporting plate; an air outlet end of the air outlet pipe is extended out of the filter shell; the foldable filter screen is arranged between the upper supporting plate and the lower supporting plate; and a filter layer of the filter screen is telescopic. When the filter layer is compressed by the upper supporting plate under pressure, the pore diameter of the filter layer is reduced and the density is increased, so that the filtration precision can be improved. Under the condition of reverse blowing from the air outlet pipe, the air pressure drives the upper supporting plate to restore to the original state; the filter screen is stretched; the filter layer of the filter screen is loosened; and the density of the filter layer is reduced, so that air can easily remove dust on the outer surface of the filter screen, thereby the filter is convenient to use.

The invention relates to a loop reaction device in a slurry bed, application and a method for producing hydrogen peroxide. The loop reaction device comprises a slurry bed reactor and a solid-liquid separator, wherein the upper part of the slurry bed reactor is communicated with the upper part of the solid-liquid separator, and the bottom of the slurry bed reactor is communicated with the bottom of the solid-liquid separator; and a coaxial inner sleeve is arranged in the slurry bed reactor, an outer sleeve is arranged between the inner sleeve and the outer wall of the slurry bed reactor at the upper part of the slurry bed reactor, a raw material inlet and a fluid distributor are arranged in the inner sleeve and at the bottom, a gas outlet is formed in the top of the slurry bed reactor, a filtration component is arranged in the solid-liquid separator, and a clear liquid outlet is formed in the wall of the solid-liquid separator via the filtration component. According to a hydrogenation method for producing hydrogen peroxide by an anthraquinone method with the adoption of the slurry bed loop reactor, the gas-liquid-solid three-phase separation efficiency is high, the excess local liquid holdup of a catalyst is avoided, the possibility of excessive hydrogenation is reduced, the hydrogenation efficiency is further effectively improved and a hydrogen peroxide product with relatively high concentration can be obtained.

The invention provides a simple method for extracting natural taurine from abalone viscera. The invention is characterized by comprising the following steps: raw material pretreatment: adding 2 times of weight-to-volume ratio of water into abalone viscera, boiling at high temperature, and collecting the soup; activated carbon treatment: passing the soup through an activated carbon column at room temperature to obtain an effluent liquid; removing impurities with ethanol, and centrifuging to obtain a precipitate and a supernatant; concentrating the supernatant to obtain a concentrated solution; adding anhydrous ethanol into the concentrated solution, standing at 4 DEG C, centrifuging to obtain a precipitate, dissolving the precipitate in hot water, adding activated carbon, stirring, and carrying out vacuum filtration to remove the activated carbon, thereby obtaining a filtrate; crystallizing to obtain a taurine crystal; and carrying out recrystallization one or more times as required. The invention has the advantages of simple technique, low extraction cost, high extraction rate, energy saving and environmental protection. The method provided by the invention can effectively utilize abalone processing byproducts and enhance the utilization ratio of ocean resources. The ethanol used in the method can be recycled, thereby being beneficial to industrialized production.

The invention relates to a traditional Chinese medicine preparation device and method, and particularly relates to a traditional Chinese medicine preparation device and method integrating the extraction, concentration and drying processes of a traditional Chinese medicine. The traditional Chinese medicine preparation method comprises the following steps: 1) extracting the traditional Chinese medicine; 2) coagulating; 3) standing and stratifying; 4) filtering with an ultrafiltration membrane device; and 5) filtering with a nanofiltration membrane assembly. The traditional Chinese medicine preparation device mainly comprises an active mass extraction device, a coagulation and stirring device, a solid-liquid separation device, a pressure filtration pump, the ultrafiltration membrane device, a backwash pump, a buffer tank, a high pressure pump, the nanofiltration membrane assembly, a concentration tank and a pipeline. The whole device has the advantages of simple structure, fewer required components, low energy consumption, sanitary operation and high production efficiency, and integrates the extraction, separation and concentration processes.

The invention discloses a preparation method of durable modified asphalt. The method comprises the following steps: performing organic treatment on montmorillonite, pouring the montmorillonite and anintercalator into a flask, feeding a dispersing agent to perform dispersing in the flask, performing stirring and suction filtration on dispersive montmorillonite, so as to obtain a montmorillonite dispersion liquid, washing the montmorillonite dispersion liquid through deionized water and drying to accomplish the organic treatment on the montmorillonite; mixing SBS with asphalt, so as to obtain molten SBS modified asphalt, feeding the montmorillonite subjected to organic treatment and titanium dioxide into the molten SBS modified asphalt, stirring, so as to obtain a mixture, putting the mixture into a stirrer to stir the mixture, and ensuring that the temperature of stirring environment is 140 to 160 DEG C, so as to obtain the durable modified asphalt. According to the method, the durablemodified asphalt prepared from the titanium dioxide replacing nanometer materials is applied to pavement laying, the ageing resistance of pavement can be improved, during the preparation, the costs of the organic treatment on the montmorillonite and the adding design of elastomers are low.

The invention relates to a preparation method for the composite flocculant of printing and dyeing wastewater mainly treating reactive dyes, comprising the following steps: (1) reactive clay mine, flocculant and fixing agent Y are weighted according to the mass ratio of 10-50:10:0-2 and then thrown and added into the printing and dyeing wastewater; and (2) the throwing and adding sequence is firstly adding the clay mine and then the flocculant, wherein, the flocculant is thrown and added in a form of powder or liquid shape, finally, the liquid-shaped fixing agent Y with the concentration of 2g/L is added, with the rapid stirring 250r/min for 1min of the time, the slow stirring 80-100r/min for 13-8min of the time and 8min of the standing. The composite flocculant improves the printing and dyeing wastewater decolorization rate and the COD removal efficiency, simultaneously enhances the sedimentation performance and the filtration rate, and also reduces the sediment; especially, the removal rate for the reactive dyes waste liquid COD reaches over 60 percent; and the preparation process is simple, the using effect is good, and the pollution to the environment is reduced when the cost is lowered.

The invention discloses a preparing method of a high-breathability and super-hydrophobic polyether sulfone hollow fiber membrane. The preparing method includes the steps of (1) preparing a high-breathability polyether sulfone hollow fiber membrane; (2) preparing a fluoridized silicon dioxide sol-gel filtering liquid; (3) preparing the hydrophobic polyether sulfone hollow fiber membrane. A specific inner coagulating bath is selected through a dry-wet method to prepare the single-skin high-breathability PES hollow fiber membrane, then silicon dioxide sol-gel is prepared through a sol-gel method, fluorine-containing silicane is used for modifying the silicon dioxide sol-gel to prepare the fluoridized silicon dioxide sol-gel filtering liquid, and the fluoridized silicon dioxide sol-gel filtering liquid is deposited to one side of the high-breathability PES hollow fiber membrane through a vacuum filtration method to prepare the polyether sulfone membrane with the single side having super hydrophobicity. The method is simple in process and easy to operate, extra equipment does not need to be arranged additionally, and hydrophobicity of the specific membrane side can be improved just through few substances low in surface energy.

The invention discloses a culture method and a culture container for an in-vitro sterile host plant-mycorrhizal edible fungus intergrowth seedling. The culture method comprises the steps of (1) preparing an in-vitro sterile host plant; (2) sterilely and accurately inoculating; and (3) culturing the host plant-mycorrhizal edible fungus intergrowth seedling. The culture container comprises a transparent container, a container cover and a triangular fixing frame. A filtration ventilating window is arranged on the container cover; the triangular fixing frame is arranged on the bottom part of the container; a circular ring with a notch is arranged on the upper part of the triangular fixing frame; and a plurality of outwards hooks for fixing an elastic rubber ring are arranged on the upper part of the circular ring. According to the culture method and the culture container for the in-vitro sterile host plant-mycorrhizal edible fungus intergrowth seedling provided by the invention, a host plant system can be cultured under the controlled environment conditions of temperature, humidity and illumination, so that the intergrowth seedling can be bred quickly and largely; and compared with the prior art, the breeding speed is improved by 3 to 12 times, the inoculation success rate is improved by 1.6 to 2.5 times, and the production rate of the inoculated host plant-mycorrhizal edible fungus intergrowth seedling is improved by 30 percent to 50 percent.

The invention discloses a hydraulic oil filtration system and a hydraulic shovel. The hydraulic oil filtration system comprises a pilot control system and a bypass filtration oil way, wherein the pilot control system is used for guiding and controlling a hydraulic working device (200), the bypass filtration oil way is provided with a bypass filter (3), a pilot pump (1) is placed inside the pilot control system, an oil suction of the pilot pump (1) is connected with a hydraulic oil tank (100), one end of the bypass filtration oil way is connected with the hydraulic oil tank (100), and the other end of bypass oil way is connected on a pilot control oil way between the pilot pump (1) and the hydraulic working device (200). Due to the fact that the bypass filtration oil way is provided with the bypass filter and is connected on the pilot control oil way and the hydraulic oil tank, high-precision and high-efficiency filtration is carried out on hydraulic oil by utilizing of a flow rate and oil pressure of the hydraulic oil on the pilot control oil way, working efficiency is improved, and the structure is simple and stable.

The invention discloses a preparation method of a graphene nano-hole which is supported by a micropore, belonging to the fields of application of heavy ion beams and processing of films. A porous graphene composite material supported by the micropore is mainly characterized by comprising monolayer graphene, wherein the monolayer graphene is arranged on a polymer film; a nanoscale hole is formed in the graphene, overlapped and communicated with a cone-shaped hole of the polymer film. Through the preparation method, a graphene/polymer film composite structure is irradiated by using high-energy heavy ions; a hole with the diameter being several nanometers is formed in the graphene by using irradiation damage effect of the heavy ions; meanwhile, a columnar damage area is formed in the polymer film; then an irradiated area of a polymer is etched to form a cone-shaped nano-hole by using a chemical etching method; since the position of the graphene hole is overlapped and communicated with the position of the cone-shaped hole of the polymer, the graphene nano-hole which is supported by the micropore can be obtained. Due to the support effect of the polymer micropore, the graphene nano-hole is wide in application prospet in rectification of the ions, filtration and screening of the ions and detection of biological molecules.

The invention relates to a process of preparing industrial high- purity water. The invention is characterized in that it comprises process of first- level hyper-filteration of pre- treated wastewater, second- level hyper-filtration, and preparation of high- purity water in continuous electric deion desalt apparatus. The advantages of this invention are: small device occupation area, low energy consumption, reduced investment, no contact of water produced in second- level hyper-filteration with air and high- quality purified water.

The invention discloses a method for producing a peanut beverage. The method comprises the following steps of: baking peanuts; removing red skins of peanut kernels; pulping the peanut kernels together with purified water; adding protease for enzymolysis; performing filtration to obtain filtrate; blending the filtrate; and homogenizing the filtrate, thus obtaining the peanut beverage. The enzymolysis is performed for 30 to 50 minutes at the temperature of 55 DEG C by adding 16 to 30U/g protease of peanut. Oligosaccharide for substituting sucrose is added in blending. Because the enzymolysis technology is used, the soluble protein content of the produced peanut beverage is improved, the digestion rate and the nutritional value of the protein are improved, the utilization rate of the raw materials and the quality of the product are improved, and sediment of the product is reduced; wheat oligosaccharide with the effects of propagating bifidobacteria and improving immunity is compounded in the product; and the common sucrose is substituted by added protein candy, sorbitol or xylitol, and the product does not contain monosaccharide or disaccharide, so the product has low sugar and low energy and is an ideal beverage suitable for crowds of high blood fat and high blood sugar and used for losing weight.

The invention provides a preparation method of a radial structure spherical NCM811 type ternary positive electrode material. The preparation method comprises the following steps: preparing a nickel salt, cobalt salt and manganese salt solution used as a solution 1, wherein a molar ratio of Ni:Co:Mn is 8:1:1; taking a precipitant, and preparing a solution 2; taking a complexing agent, and preparinga solution 3; adding the complexing agent solution into a reaction kettle as a base solution; adding the solution 1, the solution 2, and the solution 3 into the reaction kettle, introducing an inertgas to carry out protection, controlling the total ammonia concentration of the reaction system to be 0.5-1.5 mol/L, and performing aging under a pH value of 11.3-11.7 at a temperature of 45-55 DEG Cfor 5-15 h; washing the obtained reaction product, performing suction filtration, and drying the reaction product to prepare a precursor; grinding and uniformly mixing the precursor and a lithium saltwhich are used as raw materials; placing and sintering the obtained mixture in a muffle furnace in an oxygen atmosphere, wherein the sintering process comprises sintering at 400-500 DEG C for 4-8 h,and sintering at 700-780 DEG C for 10-15 h; and cooling the sintered mixture to room temperature to prepare the positive electrode material. The material obtained by the invention has the advantages of stable structure, excellent electrochemical performances, and reduction of the industrialization cost.