36results about How to "Good filtration and adsorption effect" patented technology

The invention discloses a paper-core filter rod for cigarettes and a manufacturing method thereof. A paper core containing polylactic acid fibers, non-toxic flame retardants and non-toxic water repellents is taken as a filter material of the filter rod, and the paper core also can contain acetate fibers and wood fibers and the like. The paper-core filter rod is manufactured by using a method comprising the steps of adding various components into a paper pulp to carry out paper making firstly, manufacturing the obtained product into a paper core, and then manufacturing the paper core into a filter rod. The paper-core filter rod achieves an excellent degradation effect and a good filtering effect, and has a good flame retardant property, a good moisture-resistant property; and a new paper-core filter rod which is economic in cost and really has an industrialization prospect can be provided for users in the tobacco industry.

The invention relates to a preparation method of polyolefin micro / nano fiber non-woven material. The preparation method comprises the procedures that (1) 50 to 800g of high polyme and 1200 to 1950g of cellulose ester are dried in an oven and mixed; then the high polymer and the cellulose ester undergo the process of melt spinning by a double-screw extruder; and the high polymer and the cellulose ester are winded at the winding speed of 300 to 1200m / min to form the multi-component fiber of the polyolefin / cellulose ester that is scattered at a micro / nano scale in a cellulose ester substrate; (2) the multi-component fiber is melted in acetone solution; and cellulose ester is removed to acquire the micro / nano fiber aggregate of the high polymer with thermo-plasticity; and (3) the fiber aggregate is carded by a carding machine; a net is crosswise made to form a fluffy fiber net; and after being strengthened and molded, the non-weaving material is made. The preparation method has the characteristics that the method is efficient, controllable and environment-friendly and has high added value. In addition, the preparation method facilitates mass-production.

The invention relates to a preparation method of polyolefin micro / nano fiber non-woven material. The preparation method comprises the procedures that (1) high polymer and cellulose ester are mixed in the mass ratio of 1:2.3 to 20; then the high polymer and the cellulose ester undergo the process of melt spinning by a double-screw extruder; and the high polymer and the cellulose ester are winded at the winding speed of 300 to 800m / min to form the multi-component fiber of the polyester / cellulose ester that is scattered at a micro / nano scale in a cellulose ester substrate; (2) the cellulose ester in the multi-component fiber of polyester / cellulose ester is removed by acetone solution to acquire the micro / nano fiber aggregate of the high polymer with continuous thermo-plasticity; the fiber aggregate is carded by a carding machine; a net is crosswise made to form a fluffy fiber net; and after being strengthened and molded by aqua tex, pinpricking or thermo-compression, the non-weaving material is made. The preparation method has the characteristics that the method is efficient, controllable and environment-friendly and has high added value. In addition, the preparation method facilitates mass-production and the acquired polyolefin micro / nano fiber non-woven material non-weaving material has an outstanding effect on filtration absorption.

The invention discloses a filter bag for filtering and recovering non-ferrous metal dust and a preparation method thereof. The filter bag contains 85% to 95% by weight of microporous composite filter material and the weight loaded on the microporous composite filter material. The adsorption layer with a percentage of 5%-15%, the adsorption layer is a mixture obtained by blending magnetic nano iron oxide, polytetrafluoroethylene dispersion emulsion and dispersant emulsion after curing treatment, and the weight percentage of magnetic nano iron oxide in the mixture is 3%-25%, the weight percentage of polytetrafluoroethylene is 55%-70%, and the balance is the cured product of the dispersant emulsion. The filter bag prepared by the invention has stronger adsorption force for metal dust, effectively shortens the formation time of the powder cake layer, and improves the recovery rate of non-ferrous metals and the effectiveness of cleaning dust; the filter bag of the invention has higher filtration precision and electrical conductivity. It will be significantly improved to obtain excellent anti-static and explosion-proof capabilities.

The invention discloses a method for making a polylactic acid fiber filter stick. The method comprises the following steps of: (1) loosening: loosening a polylactic acid fiber cigarette tow by using a filter stick molding machine set, wherein the line density of the polylactic acid fiber cigarette tow is 3.5-5.0Ktex; (2) gluing: spraying a degradable adhesive onto the loosened polylactic acid fiber cigarette tow; (3) molding and cutting down; (4) drying the filter stick; and (5) balancing: putting the dried filter stick into a balance chamber to be balanced more than 6 hours so as to make the polylactic acid fiber filter stick. With the adoption of the method for making the polylactic acid fiber filter stick, the problem of industrial production of the polylactic acid fiber filter stick can be solved, the production can be carried out by only using an existing filter stick molding machine set in market, the smoking taste of the made filter stick is approximate to that of a vinegar fiber stick, and the requirements on use of the cigarette can be met.

The invention relates to a modified polyactic acid composition for a cigarette filter stick and a preparation method thereof. The composition comprises following parts of raw materials, by weight, 100 parts of polyactic acid, 0.02-3 parts of polyactic acid-beta-cyclodextrin, 0.08-5 parts of sodium carbonate, 0.05-5 parts of sodium pyrrolidonecarboxylate, 0.01-4 parts of vitamin and 0.01-8 parts of polyacrylamide. The filter stick prepared through the polyactic acid composition is better in absorbing performance on smoke compared with the prior art and good in comprehensive performance, and a part of indexes of the filter stick exceed those of a cellulose acetate filter stick.

The invention discloses a process for removing tetrabromobisphenol A in wastewater based on iron-carbon micro-electrolysis technology, which is specifically carried out according to the following steps: preparing spherical iron-carbon fillers, and the iron-carbon fillers mainly include the following raw materials in parts by weight: iron filings 35-45 parts, 15-18 parts of graphite, 20-25 parts of activated carbon, and 5-8 parts of phenolic adhesive, add the iron filings into the vacuum melting furnace for smelting, spray the smelted liquid iron through the atomizing nozzle, and cool it to form a spherical shape The surface of the spherical powder of iron filings is filled with holes and grooves, and the graphite and activated carbon are crushed and mixed, and then added to the centrifuge together with the spherical powder of iron filings and phenolic adhesive to prepare iron-carbon fillers; the waste water is passed into the purification tank Inside, adjust the pH value of the waste water to be between 3-4; pass the waste water through the packing in the electrolytic purification tube; add sodium hydroxide to the purification cylinder to make the pH of the purified water 6-10, stir and let stand for precipitation, and take the purified water. The supernatant of water; the process of the invention is simple, the cost is low, and it is suitable for wide popularization.

The invention discloses a farmland rainwater collection processing device and belongs to the field of farmland rainwater processing. The farmland rainwater collection processing device comprises a plurality of U-shape cement deep groove plates, wherein the U-shape cement deep groove plates are all embedded in ravines on the ground, the U-shape cement deep groove plates are fixedly connected with each other, and U-shape shallow groove plates are fixedly connected to the U-shape cement deep groove plates; water pipes are placed on the ground, one end of each water pipe is located in the farmland, flow dividing pipes are connected to the other ends of the water pipes, and a first outlet pipe and a second outlet pipe are connected to the flow dividing pipes. According to the farmland rainwater collection processing device, the situation that a large amount of rainwater which is washed out in the farmland is stored can be achieved; meanwhile, the situation that the rainwater with fertilizer and pesticide residual is directly discharged to the river is effectively avoided, and environment pollution is effectively lowered; when irrigation is needed, the stored water in the U-shape cement deep groove plates is directly pumped to conduct irrigation through water pumps and the water pipes, the rainwater resource is sufficiently used, and the water resource is saved.

The invention provides a nano-silver diatomite antibacterial filter core. The nano-silver diatomite antibacterial filter core is prepared from diatomite, a pore forming agent, a sintering aid, a binder and water. A preparation method for the nano-silver diatomite antibacterial filter core comprises the following steps: carrying out purification and fine treatment on diatomite; subjecting diatomite to silver loading; carrying out mixing and grinding solid raw materials until D50 is equal to 1 to 10 mu m; subjecting the ground raw materials to mixing with a liquid raw material; carrying out ageing; subjecting the aged raw materials to die casting or extruding to obtain a filter core blank; and drying and sintering the filter core blank so as to prepare the nano-silver diatomite antibacterial filter core. The nano-silver diatomite antibacterial filter core has good filtration and adsorption performance due to usage of the porous structure of diatomite; after loading of nano-silver on the diatomite and sinter molding, the prepared nano-silver diatomite antibacterial filter core can guarantee microbiological safety of water quality and provide safety guarantee for performance of the functions of a subsequent water purification film when applied to bacterium and turbidity removal of domestic water.

The present invention provides a supported nanometer compound oxide environmental purification material and the preparation thereof, the diatomite and the zeolite are employed as carrier to load one of nanometer TiO2, nanometer ZnO and nanometer CeO2. The preparation method comprises preparing carriers by diatomite and zeolite; preparing compound oxide precursory sol by employing ethanol as medium and the zinc nitrate and / or cerium nitrate and butyl titanate as material; loading the compound oxid precursory sol on the carrier to obtain loading-body; drying, baking and cooling the loading-body to obtain the supported nanometer compound oxide environmental purification material of the present invention which has perfect filter, adsorption, ion exchange, catalytic degradation and antibacterial function, good chemical stability, convenient usage, reclaim and regeneration, safety, innocuity, simple preparation technique and low cost. The supported nanometer compound oxid environmental purification material of the present invention is suitable for batch production and used widely in purifying process of atmosphere and water system.

The invention relates to a composite filter sheet, comprising an upper layer of non-woven fabric, a lower layer of non-woven fabric and an intermediate layer of activated carbon particles; The average fineness of the fiber is 1-5μm, and the gram weight is 8-25g / m2; the composite filter has excellent filtration and adsorption performance, the product structure is ingeniously designed, and it is easy to produce. The carbon particle diameter is large and has high adsorption efficiency for toxic gases. The time is long; in addition, the invention also provides a preparation method of the composite filter.

The invention relates to a nanofiber membrane material for filtering M<3+> in water and a preparation method thereof. According to the preparation method, by taking graphene oxide, p-phenolic fluoroboron dipyrrole L, polyvinylpyrrolidone PVP and polyvinyl alcohol PVA as raw materials, micro-nano membrane fiber with high specific surface area and high stability is prepared by a solution jet spinning technology. By virtue of specific coordination recognition of Fe<3+>, Al<3+> and Cr<3+> by the p-phenolic fluoroboron dipyrrole L, the adsorption of the Fe<3+>, the Al<3+> and the Cr<3+> by the nanofiber membrane material is improved; the nanofiber membrane material has excellent effects of filtering and adsorbing the metal Fe<3+>, the metal Al<3+> and the metal Cr<3+> in industrial wastewater;by the preparation method, the production efficiency is high, the production cost is low, a technology is simple, and fiber diameter distribution is uniform; the nanofiber membrane material is high infiltration and adsorption efficiencies, can achieve thorough removal, and is suitable for large-scale industrial production.