108results about How to "Improve the adsorption and filtration effect" patented technology

The invention discloses skin-core structure aerogel composite fibers as well as a preparation method and application thereof. The preparation method comprises the following steps: treating aerogel particles and a polymer material through a skin-core compound spinning method, and carrying out synchronous compounding on the aerogel particles and the polymer material with a molten state at the tail end of a spinneret orifice through a guide pipe structure or a slit structure; synchronously carrying out wire drawing and cooling to form the skin-core structure aerogel composite fibers, wherein theskin-core structure aerogel composite fibers comprises a core containing the aerogel particles and a skin layer covering the core and the skin layer comprises the polymer material. The preparation method disclosed by the invention has the advantages of simple production technology, uniform aerogel-polymer compounding, complete preservation of an aerogel structure, advanced production equipment andthe like; the obtained skin-core structure aerogel composite fibers have the characteristics of excellent heat insulation performance, heat preservation effect, sound isolation performance, adsorption and filtering performance, thermal stability, no dust, economical efficiency and environmental protection and the like, and have a great application potential in the fields of clothing, home textiles, industrial heat preservation, adsorption and filtering and the like.

The invention discloses an anti-haze window screen based on an electrospinning technology and a preparation method thereof. The window screen is provided with a three-layer composite structure, a baselayer is a metal screen cloth, and a cyan ethyl acrylate viscous layer is compounded on the surface of the metal screen cloth in an electrostatic spray method. An intermediate layer is a nanofiber functional film directly electrospun on the surface of the metal screen cloth by electrospinning, and the nanofiber functional film is a nano-graphene/PVDF/PEO composite nanofiber film, a protective layer is compounded on the upper surface of the nanofiber functional film through a hot pressing method, and the protective layer is a nylon net. The window screen can filter outdoor air, effectively block dust and other particulate matter, and can ensure indoor and outdoor air circulation and indoor lighting. The preparation method is simple, suitable for large-scale production, and has a good application prospect.

The invention discloses a preparation method of a nanocellulose/filter paper composite filter membrane material. The preparation method comprises steps: 1) nanocellulose is prepared from a cellulose material through TEMPO oxidation in combination with a mechanical treatment method; 2) nanocellulose and a substrate filter paper are subjected to layered compositing with a vacuum suction filtration method, and the nanocellulose/filter paper layered compositing filter membrane material is prepared; or nanocellulose and filter paper pulp are composited in an embedded manner with a papermaking process, and the nanocellulose/filter paper embedded compositing filter membrane material is prepared. The performance controllability of a compound ultrafiltration membrane and a micro-filtration membranematerial is realized by controlling the morphology size of nanocellulose, the compositing manner (layered/embedded) of nanocellulose and ordinary filter paper (filter paper pulp) and the drying manner. The composite filter membrane material contains electronegative nanocellulose and has filter performance, the adsorption capability of tiny microparticles can be effectively improved, and the filtration efficiency can be improved.

The invention relates to foaming microporous glass pumice for chemical clarification and water quality filtration. The pumice is characterized by comprising foaming micropores, wherein the aperture of the foaming micropores is 0.5-3mm, the water absorption is 15-30%, the strength is 3-8MPa and the density is 0.3-0.4g/cm<3>. The pumice is prepared by sintering a foaming mixture which comprises the following components in percentage by weight: 90-95% of glass powder, 2-5% of marble powder, 1-3% of aluminum oxide powder and 1-3% of calcite powder, wherein the fineness of glass powder is 40-100 mu m, the fineness of marble powder is 20-40 mu m, the fineness of aluminum oxide powder is 20-40 mu m and the fineness of calcite powder is 20-40 mu m. The invention further relates to a preparation method of the foaming microporous glass pumice for chemical clarification and water quality filtration. The pumice provided by the invention has the advantages of low using cost and long using period.

The invention discloses an adsorption purification device for industrial oil-containing waste gas treatment, and belongs to the technical field of waste gas treatment. The introduced waste gas is subjected to spraying treatment through a hollow washing box, the treated water body is subjected to adsorption treatment by the honeycomb ceramic adsorption filler filling in a straw hat-shaped flow guide box; the washed waste gas is brought into a conical adsorption emulsification disc through the gas guide adsorption mechanism, greasy dirt particles in the waste gas are adsorbed by the greasy dirtadsorption fiber layer and the greasy dirt capture crude fibers in the conical adsorption emulsification disc, oil stains in the waste gas are adsorbed in the conical adsorption emulsifying disc and then are in contact with an emulsifying agent on the emulsion guide fiber surface; after the emulsification reaction, the oil stain is decomposed; the oil droplets fall off and are desorbed to the airguide adsorption mechanism by utilizing the matching of the self gravity of the emulsion oil droplets and the oleophobic characteristic of the bottom end surface of the conical adsorption emulsification disc so that the adsorption blockage phenomenon caused by excessive oil stains on the conical adsorption emulsification disc is effectively avoided.

The invention discloses a safe and environment-friendly fuel oil filter paper with good fuel oil resistance stability. The fuel oil filter paper is characterized by being prepared from the following raw materials by weight: 50 to 54 parts of birch pulp, 52 to 57 parts of eucalyptus pulp, 3 to 4 parts of melamino-formaldehyde resin, 0.3 to 0.5 part of sodium dodecyl benzene sulfonate, 1 to 2 parts of dried rosebay leaves, 0.5 to 0.7 part of carragheenan, 0.3 to 0.4 part of flaxseed gum, 3 to 4 parts of quartz sand, 3 to 4 parts of active carbon, 2 to 3 parts of a glass fiber, 1 to 2 parts of ammonium chloride, 5 to 7 parts of polymethyl acrylate, 2 to 3 parts of dioctyl ester, 1 to 2 parts of an auxiliary agent and a proper amount of water. According to the invention, quartz sand, the glass fiber and the like are added and organically combined with the filter paper, so the filter paper has good strength and adsorptivity, water resistance, flame retardation and fuel oil resistance stability; ammonium chloride is added, so the filter paper has a good flame retardation effect; the auxiliary agent is added, which is safe and environment-friendly, small pores are formed in the surface of the filter paper, so adsorptivity is improved and the filter paper has a good filtering effect and long service life.

The invention discloses a method for treating sewage containing radioactive substances. After a pH value of sewage is adjusted, active adsorbent is added to the sewage for stirring, solid precipitate is fixed after solid-liquid separation, then bacteria and enzyme are sequentially added to the sewage without radioactive substances, and stirring and standing are performed respectively to purify the sewage. Compared with the prior art, the adopted active adsorbent is large in specific surface area, good in adsorption and filtration performance and low in cost, cooperates with a microbial water purifier to remove most of pollutants including the radioactive substances in radioactive sewage.

The invention discloses a comprehensive metal oxide modified diatomite adsorption filtering agent which is characterized by being prepared from the following raw materials, by weight, 60-65 parts of diatomite, 20-30 parts of flue dust, 10-14 parts of activated aluminium oxide, 3.7-5.9 parts of nanometer titanium dioxide, 2.4-3.6 parts of nanometer calcium carbonate, 2-4 parts of copper oxide, 1-3 parts of iron chloride, 1.3-2.7 parts of potassium ferrate, 3-5 parts of terpineol, 0.2-0.4 part of sodium dodecyl benzene sulfonate, 6-8 parts of syrup and a proper amount of water. According to the invention, diatomite and flue dust are used as raw materials, and activated aluminium oxide, copper oxide and the like are used in cooperation. Through a physical and chemical modification method, nanometer titanium dioxide is loaded on the surface of diatomite so as to decompose organic pollutants into carbon dioxide and oxygen. Thus, harmful substances adsorbed on diatomite are reduced, and service life of the adsorption filtering agent is prolonged. The prepared adsorption filtering agent has advantages of rough and hard surface, large specific surface area, high porosity, good adsorption filtering performance and low cost. When sprayed on a deduster filter material, the adsorption filtering agent also has a waterproof effect.

The present invention provides a method for determining gold content of sludge by using active carbon adsorption atomic absorption method, including: drawing a series of standard solution working curves, pretreating sludge under gold content determination, adding aqua regia for heating and decomposing, adding polyacrylamide as an adsorbent for adsorbing, determining in an organic phase, absorbance of a sample solution by using an atomic absorption spectrophotometer, and calculating the gold content of the sludge according to the absorbance and the series of standard solution working curves. By using the polyacrylamide as an adsorbent for decomposing, the method of the invention provides better adsorption effect than the use of traditional animal glue so that better adsorption and filtration effect is provided at the premise of shortened treatment time; meanwhile, after being dried, crushed and screened, a sludge sample is added directly into aqua regia for decomposing, the steps for treating the sludge sample are simplified, it is convenient for staff to operate, the analytical time for a single test is shortened, analytical period is shortened, and the method is particularly valuable for frequent sampling and determining in a sludge recycling factory.

The invention relates to toxicant filtering equipment containing a MOFs adsorption material. The toxicant filtering equipment is mainly used for solving the problem in the prior art that the adsorption capacity and adsorption range are relatively poor. According to the toxicant filtering equipment containing the MOFs adsorption material, through adopting the technical scheme that the toxicant filtering equipment containing the MOFs adsorption material comprises a gas inlet, a toxicant filtering equipment shell, the adsorption material and a protective equipment interface, wherein the gas inletis located at the upside edge of the toxicant filtering equipment shell, the adsorption material is filled in the toxicant filtering equipment shell and comprises a non-woven fabric, a metal-organicframework material layer or metal-organic framework material granules, the metal-organic framework material layer is made from multiple layers of non-woven fabric layers with a certain loaded amount of metal-organic framework material, the metal-organic framework material granules are granules with certain sizes and shapes granulated from the metal-organic framework material, and the metal-organicframework material layer or the metal-organic framework material granules are filled in the non-woven fabric, the above problem is better solved, and the toxicant filtering equipment can be applied to smoke helmets.

The invention provides an activated carbon jet flow device. The device comprises a tank body filled with an activated carbon. The top of the tank body is provided with a filter water inlet pipe; the bottom of the tank body is provided with a filter water outlet pipe; the inner wall of the tank body is provided with a cleaning water inlet pipe, wherein the cleaning water inlet pipe is communicated with the outer part of the tank body through the bottom of the tank body. The cleaning water inlet pipe is provided with a cleaning nozzle; the middle in the tank body is also provided with a central cleaning water inlet pipe, wherein the central cleaning water inlet pipe is communicated with the outer part of the tank body through the bottom of the tank body. A hole is formed around the central cleaning water inlet pipe; a branch pipe is arranged on the hole; the nozzle is arranged on the branch pipe; one side of the upper part of the tank body is provided with the cleaning water outlet pipe. The activated carbon jet flow device has the advantages of being portable to filter , long in using period and capable of being used repeatedly, energy-saving and water-saving; being high in automation degree, short in anti-cleaning time and small in flow pressure loss; being small in vulnerable parts; having invulnerable activated carbon filter materials; being more thorough to clean the activated carbon compared to the traditional cleaning method.

The invention belongs to the technical field of environmental protection, and discloses a modified glass fiber dust-removing material. The material is prepared through the following processes of crushing and grinding, cationic starch modifying, stirring and heating, even mixing and stirring, spraying and drying. According to the modified glass fiber dust-removing material, by modifying glass fibers, the adsorbing and dust-removing effects are improved, and the service life is long.

The invention discloses a multi-effect adsorption filter for treating waste gas containing hydrogen fluoride, which is prepared by the following raw materials, on a weight basis, 20-30 parts of sludge, 10-14 parts of high alumina bauxite, 55-65 parts of bamboo charcoal powder, 8-10 parts of hollow glass microbeads, 4-8 parts of nano titanium dioxide, 1.2-2.3 parts of sodium benzoate, 0.8-1.3 parts of zinc chloride, 2.1-3.5 parts of cellulose ether, 0.4-0.8 parts of cetylpyridinium bromide, 9-12 parts of hemp pulp, and a moderate amount of water. The inventive adsorption filter has the advantages of rough and rigid surfaces, large specific surface area, high porosity, good adsorption filtration performance, low cost and easy promotion and application; the nano titanium dioxide is loaded on the surface of the bamboo charcoal powder through a physical and chemical modification method, which can decompose organic pollutants into carbon dioxide and oxygen gas, so as to reduce the harmful substances adsorbed on the bamboo charcoal powder, prolong the service life of the adsorption filter; and the adsorption filter is suitable for dedusting and hydrogen fluoride adsorption in aluminium electrolysis industry by spraying it on the deduster filter materials.

The invention relates to a processing method and a system of rinsing waster water in a printed circuit board. The method carries out the solid-liquid separation of the rinsing waste water, filters the waste water to control the particles in the waste water not to be larger than 30 micron and then filters the waste water to set discharge standard through a SiC porous ceramic filter leaf. The system comprises a solid-liquid separating device, a preliminary filtering unit and a depth-type filtering unit. The preliminary filtering unit uses a filtering net or a high molecular film to be a filtering element; the depth-type filtering unit comprises a multilevel filtering unit that uses the SiC porous ceramic filter leaf as the filtering element. The set level of the filtering unit causes drained water after filtering to meet the set standard. The invention adopts the physical filter and adsorption instead of the chemical reaction, thus having remarkable absorption and filter effect of heavy metal ions without introducing other substances. With low cost, little energy consumption, simple operation, small occupied area and wide application scppe, the invention has the good application outlook and the remarkable social benefits.

The invention discloses an adsorption filtering agent for nano strontium titanate modified montmorilonite clay. The dsorption filtering agent is prepared from the following raw materials in parts by weight: 70-80 parts of montmorilonite clay, 11-14 parts of coke powder, 15-20 parts of coal ashes, 2-4 parts of rosin, 1-3 parts of magnesium chloride, 1.1-2.4 parts of sodium metaphosphate, 0.6-0.9 part of antimonous oxide, 4.2-5.7 parts of nano strontium titanate, 0.4-0.8 part of a silane coupling agent YDH-151 and an appropriate amount of water. The adsorption filtering agent prepared by the preparation method has the characteristics of a rough and hard surface, a large specific surface area, high porosity, good adsorption filtering performance and low cost, the nano strontium titanate is loaded on the surface of the montmorilonite clay through a physical and chemical modifying method for decomposing organic pollutants into carbon dioxide and oxygen gas, so that harmful substances adsorbed on the montmorilonite clay are reduced, the service life of the adsorption filtering agent is prolonged, and the adsorption filtering agent is provided with a good waste gas filter function while being sprayed to a dust collector filter material and is suitable for being used in high temperature soot treatment.

The invention discloses a recyclable environmentally friendly adsorption filtering agent, characterized by comprising the following raw materials by weight: 70-80 parts of sepiolite, 6-9 parts of plant carbon black, 10-14 parts of calcite, 5-7 parts of zeolite molecular sieve, 4-6 parts of nano-TiO2, 2-4 parts of chitosan, 1-2 parts of peroxide sodium, 3-4 parts of ferric nitrate, 0.4-0.8 part of titanium trichloride, 7-10 parts of waterborne fluorocarbon emulsion, and right amount of water; the sepiolite as a raw material is mixed with the plant carbon black, the calcite, zeolite molecular sieve, nano-TiO2TiO2, and the like, the nano-TiO2TiO2 is loaded on to the sepiolite surface by physical and chemical modification method, and organic pollutants are decomposed into carbon dioxide and oxygen, so that harmful substances absorption on sepiolite is adsorbed, the service life of the adsorption filtering agent is prolonged, the prepared adsorption filtering agent is rough and hard in surface, large in specific surface area, high in porosity, good in adsorption and filtration performance, high in performance cost and low in cost, can effectively absorb carbon dioxide, and can be used repeatedly.

The present invention discloses an allochroic silica gel mask capable of representing the electrostatic adsorption capacity which comprises an allochroic silicagel layer, the allochroic silicagel layer is arranged on a mask body, and the allochroic silicagel layer can change color according to humidity and is used for representing the electrostatic adsorption capacity of the surface of the mask. The electrostatic adsorption performance of the mask is indirectly sensed through visual change of the color change degree of the allochroic silicagel, used materials are non-toxic, environmentally friendly, harmless to the human body, simple in structure, convenient to use and operate and wide in market application prospect.

The invention discloses an oil bath type air filter. The oil bath type air filter is characterized in that a partition plate is arranged in an inner shell and divides the interior of the inner shell into an air inlet channel and an air outlet channel, an upper oil wire assembly is arranged in the air outlet channel, the upper portion of the partition plate inclines by a certain angle in the direction of the air outlet channel to form an inclined portion and a lower vertical portion, the inclined portion directly faces an air inlet, and a lower oil wire assembly is arranged in a lower shell. According to the oil bath type air filter, the partition plate of the inner shell forms the inclined portion and the vertical portion, the inclined portion directly faces the air inlet of an upper outershell, air flow enters an air flow direction-changing accelerating cavity from the air inlet and impacts the inclined plane of the inclined portion of the partition plate, part of impurities with large particles and heavy gravity in the air flow are primarily intercepted and filtered on the inclined plane, under the action of gravity of the impurities with large particles and heavy gravity or airflow pressure, the impurities slide down along the inclined plane and fall to the bottom of an inner cavity of the lower shell, and the air flow subjected to direction changing after impact is accelerated to enter the lower portion of the air inlet channel so that the impurities in the air flow can be more conveniently adsorbed and filtered through engine oil, and the filtering efficiency is higher.

The invention discloses a heat-resisting dust collecting bag. The heat-resisting dust collecting bag comprises a bag body and a bag basket inside the bag body, wherein the bag basket is in a hollow-out column structure provided with support bars; the mouth of the bag body is arranged at the top of the bag basket in a hooping mode; the inner diameter of the bag body is smaller than the diameter ofthe cross section of the bag basket. According to the heat-resisting dust collecting bag, potassium titanate whisker and nano titanium dioxide particles achieve synergistic effects to fill and modifypolytetrafluoroethylene resin and further to effectively reduce adhesive abrasion and to prolong the service life; besides, matched application of samarium oxide and gamma-methacryloxy propyl trimethoxyl silane can enhance the interface bonding force among glass fiber, carbon fiber and the polytetrafluoroethylene resin, to improve the modification effects of the glass fiber and the carbon fiber onthe polytetrafluoroethylene resin, to improve breathability, heat resistance and mechanical strength, and to endow the heat-resisting dust collecting bag with the advantages of being age-resistant, heat-resistant, high in mechanical strength and good in dust removing effects.

The invention discloses a silicon wafer cutting device which comprises a mounting base, a mounting plate, a supporting column, a fixing plate, a top base, a cutting structure and a grinding structure,a sliding cavity is formed in the top of the mounting base, and the mounting plate is arranged on the sliding cavity in a sliding manner. The top base is fixed to the center of the top of the mounting plate, a fixed base is rotatably arranged at the top of the top base, an adjusting rod is rotatably arranged at the center of a rotating cylinder, a rotating ring is fixed to the top of the adjusting rod, and a pressing plate is fixed to the bottom of the adjusting rod; and the cutting structure is mounted at one side edge of the top of the mounting base, the grinding structure is mounted in a grinding cavity, and a dust suction structure is arranged in the mounting base. The silicon wafer cutting device is reasonable in design, silicon wafers with different diameters can be cut according toneeds, meanwhile, the silicon wafers can be well polished after being cut, meanwhile, cut chippings can be well absorbed and filtered, and the silicon wafer cutting device is suitable for applicationand popularization.

The invention provides a use of taking cellulose diacetate pulp as a cigarette filter rod. A new use of the cellulose diacetate pulp is deleloped. Compared with conventional fibers, the cellulose diacetate pulp has larger porosity and specific surface area, the adsorption and filtration effect is good, effective adsorption of harmful substances such as tar in cigarette smoke can be realized, and the cellulose diacetate pulp can be directly used as the cigarette filter rod in the cigarettes; and the application value is high, and the application prospect is good.

The invention discloses a preparation process of a zirconium silicate ball filler. The preparation process comprises the following steps of: step 1, adding zircon sand, alumina powder, a fluxing agentand charcoal powder into an aqueous solution, and mixing the materials to form a mixture; 2, introducing argon into a hearth for atmosphere protection, gradually adding the mixture into the hearth, and heating the mixture to be in a molten state, and forming a molten mixture; and step 3, pouring the mixture in the molten state out of the hearth, blowing the molten mixture flowing out of a launderof the hearth by using compressed air, blowing the molten mixture into balls, performing cooling, solidifying and heat preservation to obtain zirconium silicate ball fillers with different particle sizes. The zirconium silicate ball filler provided by the invention has compressive strength of more than 30MPa, strong acid corrosion resistance and impact toughness, and micron-sized through apparentporosity of 25-40%, and is suitable for chemical industry, water treatment filtration and inorganic salt adsorption.

The invention belongs to the technical field of environmental protection, and discloses a novel environment-friendly dust collector which comprises a dust filter bag. The dust filter bag is prepared according to the process including the steps: 1) preparing a material A; 2) preparing a material B; 3) preparing a material C; 4) preparing a material D; 5) preparing the dust filter bag. The dust collector with the modified dust filter bag is environmentally friendly, pollution-free, high in filtering efficiency and long in service life, and has an important industrial application value.