311results about How to "Comprehensive adsorption" patented technology

The invention relates to the field of tobacco filter sticks, and discloses a tobacco fiber paper filter stick and a preparation method of the tobacco fiber paper filter stick. The paper filter stick is composed of a filter element and forming paper, wherein the filter element is obtained by coiling paper fiber, the paper fiber is tobacco fiber pulp and long fiber pulp which are obtained by grinding tobacco raw materials and long fiber raw materials into liquid, then the tobacco fiber pulp and the long fiber pulp are subjected to pulp matching, sheet making, squeezing and drying to be manufactured into a fiber paper base, and the tobacco fiber paper filter stick can be obtained through smearing, drying and rolling. On the basis of wet process papermaking, tobacco fiber and long fiber are mixed according to a proper proportion in the pulp matching stage of papermaking, and the obtained paper filter stick not only has higher tar and nicotine removing capacity than a cellulose acetate filter stick, but also can successfully eliminate wooden offensive odor of the long fiber. Raw materials of the filter stick come from natural plants, and therefore the filter stick only has the scent of tobacco and does not have the scent of paper or chemical fiber, the color of the filter stick is consistent to that of cut tobacco of cigarettes, and the filter stick has the texture of natural material of tobacco and guides a new direction for the technical field of cigarettes.

The invention discloses a nitrogen-doped graphene catalyst as well as a preparation method and application thereof. The preparation method comprises the following steps: drying and dehydrating glucose and urea, and mixing with melamine, wherein the mass ratio of the urea to melamine is 2-4; uniformly grinding the mixture, and calcining the mixture into a muffle furnace at the temperature of 550 DEG C for 3 hours; cooling and grinding uniformly, adding the mixture into a tube furnace, introducing into nitrogen protection, calcining at the temperature of 850-1000 DEG C for an hour, thereby obtaining the nitrogen-doped graphene catalyst. According to the in-situ nitrogen-doped graphene disclosed by the invention, the used raw materials are low in price, the method is simple, the yield is high, and graphite-like nitrogen doped graphene with the highest ratio is obtained by changing the rate of the raw materials and the temperature, so that the catalyst has a good oxidation-reduction effect, and expensive Pt can be replaced to a certain degree.

The invention relates to a method for preparing titania mesoporous spheres and application of the titania mesoporous spheres in a solar cell. The titania mesoporous spheres can be used for making membrane electrodes for use in a photo-cathode of a dye-sensitized solar cell, and the photo-cathode comprises a first layer of transparent titania membrane and a second layer of the titania mesoporous sphere membrane of the invention, wherein the first layer of transparent titania membrane is obtained through heat treatment of titania sol which is obtained by grinding and is screen-printed on a conductive substrate, and the second layer of titania mesoporous sphere membrane is formed by printing sol prepared from titania mesoporous spheres through screen printing and other techniques. The dye-sensitized solar cell made on the basis of the titania mesoporous spheres is simple in preparation method, has a electrode membrane which can fully absorbing dye and has excellent light dispersion performance, and contributes to the improvement of the photoelectric conversion rate.

The invention relates to a filtering device for sewage, in particular to a filtering device for treating sewage after dehydration of crude oil. The filtering device for treating the sewage after dehydration of the crude oil is high in filter efficiency and is free of pollution after discharge, and good effects can be realized by the device. The filtering device for treating the sewage after dehydration of the crude oil comprises a bottom plate, a filter tank, a water inlet pipe, a water outlet pipe, a filter device and the like. The filter tank is connected with the middle of the top of the bottom plate in a bolted connection mode, the water inlet pipe is connected with the top of the filter tank, the water outlet pipe is connected with the middle of the right side of the filter tank, the water inlet pipe and the water outlet pipe are communicated with the filter tank, and the filter device is arranged on the inner top of the filter tank. The filtering device has the advantages that oil and suspended particles in the sewage can be filtered by the filter device and an adsorption device, filter effects can be improved by a lifting device and a stirring device, accordingly, the device is high in filter efficiency and is free of pollution after discharge, and the good effects can be realized by the device.

The invention relates to a preparation method for a spirogyra-based biomass carbon material/nanometer sulfur composite material. The method comprises the following steps of washing and drying spirogyra, heating the washed and dried spirogyra in a vacuum tubular furnace, carrying out heat preservation and carbonization at 500-900 DEG C, mixing the carbonized spirogyra with nanometer sulfur with ultrasound, carrying out ball milling, drying the ball-milled mixture by an air blow drying box, heating the dried mixture in the vacuum tubular furnace, carrying out heat preservation for 3-6 hours at 100-200 DEG C, and afterwards cooling the mixture subjected to heat preservation to a room temperature with the furnace to obtain the target product, namely the spirogyra-based biomass carbon/nanometer sulfur composite material. According to the preparation method, the spirogyra is taken as a precursor for the first time, and a biomass carbon material with a continuous sheet-shaped structure similar to graphene and with nanoscale thickness is synthesized; the biomass carbon material comprises the sheet-shaped structure composed of continuous fibers, also is provided with nanoscale pores and is high in uniformity and continuity, the loading of sulfur particles is facilitated, and the obtained composite material has favorably electrochemical performance.

A pulp manufacturing method includes the steps of: filtering pulp with a screen of 80-200 meshes, and collecting short fiber size filtrate and filtered long fiber size, wherein the length of the short fiber in the short fiber size filtrate is smaller than or equal to 180 microns, and the length of the long fiber in the filtered long fiber size is larger than 180 microns; concentrating the short fiber size to enable the concentration of the short fiber size be 1%-10%; filling filler and retention aid in the concentrated short fiber size filtrate to form short fiber size; and mixing the short fiber size with the filtrated long fiber size to obtain the pulp, wherein 60% quality content of filler is absorbed on the surface of the short fiber. By means of the manufacturing method, retention rate of paper filler is improved, and simultaneously various strength indexes of paper are improved. The invention further provides the pulp, a papermaking method and body paper.

The invention discloses a carboxylated carbon nanotube catalyst carrier as well as a preparation method and application thereof. The preparation method of the carboxylated carbon nanotube catalyst carrier comprises the following steps of: putting carbon nanotubes in the mixed liquid of concentrated HNO3 and concentrated H2SO4 in a volume ratio of (1: 3)-(3: 2) and performing constant-temperature reflux treatment in the range of 80-95 DEG C for 100-120 minutes, and then washing and drying, thereby obtaining the carboxylic carbon nanotube catalyst carrier. The catalyst carrier is used for preparing Pt/CNT catalyst; the obtained Pt/CNT catalyst is used as an air cathode material for preparing a single-cavity membrane-free air cathode microbial fuel cell. The rich oxygen-containing groups are introduced on the surface of the catalyst carrier prepared by the method, so that the oxygen reduction effect of the catalyst is improved; and the Pt/CNT catalyst prepared from the catalyst carrier succeeds in starting MFC (Micro Function Circuit) so that the start period of MFC is shortened, the internal resistance of MFC can be reduced and the output voltage of MFC also can be greatly increased.

The invention belongs to the technical field of water processing, and discloses a preparation method and an application of a hydrophilic polyurethane porous carrier. According to the invention, foamed polyurethane processed through an ozone surface treatment is subject to surface grafting copolymerization modification by using an acrylic acid and sulfuric acid aqueous solution with quadravalent cerium ions as an initiator. A reaction is carried out for a certain period of time; and the porous polyurethane carrier is washed and dried. With the method, a fixed microbial amount of the hydrophilic porous polyurethane is improved by approximately 60%. The hydrophilic porous polyurethane is convenient to process. Film forming speed of the modified porous polyurethane is improved, wherein film forming can be accomplished in 2-3 days. Compared to traditional water processing carriers, with the hydrophilic polyurethane porous carrier, film forming time is reduced, workload is reduced, and the preparation technology is simple. The hydrophilic polyurethane porous carrier can resist shock load.

The invention relates to titanium dioxide photocatalysts, especially to a preparation method of an in-situ carbon doped hollow titanium dioxide photocatalyst and application of the photocatalyst in sewage treatment. In order to solve the disadvantage of needing to add a carbon precursor in existing preparation methods for carbon doped titanium dioxide, the invention provides a technology for in-situ preparation of the carbon doped hollow titanium dioxide visible light photocatalyst through carbonization of a cation template. The efficient carbon doped visible light photocatalyst is mainly obtained by control of monodispersion of the cation template, self-assembly of tetrabutyl titanate (TBT) on the template surface, catalytic hydrolysis of TBT and segmented programmed calcination to remove the template. Therefore, the method provided by the invention is continuation and further expansion of the titanium dioxide preparation technology, and is also invented directed at the disadvantages of slow reaction rate, low quantization yield, poor solar energy utilization ability and the like. And the research result can be widely applied to atmospheric pollution, wastewater treatment, solar cell development and other fields.

The invention provides a method for improving the high-temperature properties of an alumina based ceramic core for solving the problem that a domestic alumina based ceramic core has deflection difference at 1600 DEG C and fails to meet the requirement of pouring of single crystal blades at above 1550 DEG C, and belong to the technical field of alumina based ceramic core manufacturing. The method comprises the following steps: adding porous high-purity alumina to alumina based ceramic core powder, performing core pressing, primary roasting, primary strengthening by use of a high-temperature strengthening liquid, secondary roasting, secondary strengthening by use of the high-temperature strengthening liquid, third strengthening by use of the high-temperature strengthening liquid and primary strengthening by use of a low-temperature strengthening liquid, and finally roasting to obtain the core product. After the alumina based ceramic core is treated by use of the method, the deflection of the alumina based ceramic core is reduced to 0-0.5mm; after double roasting and double strengthening, the strength of the core is above 15Ma; after double roasting and triple strengthening, the strength of the core can be above 25Ma; as a result, the high-temperature properties of the alumina based ceramic core are greatly improved.

The invention relates to the technical field of air purification and disinfection, and provides a semiconductor air purification and disinfection unit and an air purification and disinfection apparatus. The semiconductor air purification and disinfection unit comprises a first static module and an ultraviolet catalysis reactor, the ultraviolet catalysis reactor is arranged in front of or behind of the first static module, the first static module comprises a first discharge pole plate and a first dust collecting pole plate arranged in front of or behind the first discharge pole plate and insulated from the first discharge pole plate, the first discharge pole plate comprises at least one pointy discharge body, and the position of the first dust collecting pole plate corresponding to the at least one pointy discharge body, is provided with a through hole for the go-through of air. The first discharge pole plate and the first dust collecting pole plate of the semiconductor air purification and disinfection unit forms a discharge circuit, air going through the through hole is ionized to form plasma and generate a tiny amount of ozone, and 387nm optical radiation waves generated by an ultraviolet lamp in the embodiment of the invention are combined to realize a good disinfection and purification effect.

The invention relates to a preparation method of a silicon-carbon composite material, which comprises the following steps: adding a carbon-based material into a fluidized bed reactor, introducing inert gas to replace air in the fluidized bed reactor, and vacuumizing to form a vacuum environment in the fluidized bed reactor; introducing a silicon source gas into the fluidized bed reactor forming the vacuum environment, carrying out chemical vapor deposition to deposit nano silicon particles on the carbon-based material, and carrying out intermittent periodic repeated air extraction and air inflation deposition treatment to prepare a precursor of the silicon-carbon composite material; and introducing a carbon source gas into a fluidized bed reactor, and carrying out chemical vapor depositionto deposit carbon on the precursor, thereby obtaining the silicon-carbon composite material.

The invention discloses a graphene base TiO2 nano-composite material capable of removing humic acid in rural drinking water, and a preparation method thereof. The preparation method is characterized in that ammonium hexafluorotitanate is taken as a raw material, graphene oxide prepared with a hummers method is taken as a carrier, and the graphene oxide and the ammonium hexafluorotitanate are mixed through a hydrothermal method to carry out hydrothermal conversion so as to prepare the graphene base TiO2 nano-composite material. The preparation method has the advantages of simple preparation technology, abundant raw materials, environment protection, low cost and high cost performance and does not need expensive equipment, and a preparation process is free from environment pollution. The graphene base TiO2 nano-composite material has a larger specific surface area, more organic matters can be adsorbed, no environment pollution is in the presence in a use process, the removal efficiency of organic matters is high, a powerful support is provided for drinking water safety and environment water body protection, and the graphene base TiO2 nano-composite material can be widely applied to the practical removal of the humic acid in the drinking water.

The invention discloses a high-content manganese additive used for producing aluminum alloy and a preparing method of the high-content manganese additive. The manganese additive in a cake shape or rugby shape and formed by pressing raw material powder. The raw material powder comprises manganese powder, aluminum powder, iron powder and fluxing agents. The manganese powder, the aluminum powder, the iron powder and the fluxing agents are crushed under protection of inert gas, and the high-content manganese additive further comprises a surfactant. According to the high-content manganese additive, by mass, the manganese powder accounts for 86%-97%, the aluminum powder accounts for 2.39%-6.39%, the iron powder accounts for 0%-6%, the fluxing agents account for 0.01%-0.05%, and the surfactant accounts for 0.5%-2%. The density of the formed high-content manganese additive ranges from 3.0 g/cm<3> to 5.0 g/cm<3>. The method includes the steps of 1, crushing, 2, material preparing, 3, material mixing, 4, pressing, 5, drying, 6 packaging and the like. When the high-content manganese additive is dissolved into molten aluminum, the melting temperature is low, the melting time is short, and the recovery rate of manganese is high.

The invention provides a preparation method for a regenerative active adsorbent through solid wastes and plants, and relates to the technical field of material production, in particular to the technical field of adsorbent preparation. The preparation method comprises the following steps: performing high temperature processing on obtained sludge subjected to treatment by a sewage treatment system to obtain granulous solids; mixing the granulous solids with plant wastes, coal slay, calcium lime and black mud, drying, and pressing the mixture to be a massive blank; placing the massive blank into a kiln to be preheated and carbonized, then performing high-temperature catalysis treatment, and cooling to obtain activated carbon. Under the effect of high temperature, the plant wastes of wasted crops are carbonized, pores with different sizes are formed in the surfaces and inner parts of produced finished produces, so that a function of activated carbon is provided; moreover, the carbonized plant wastes are natural activated carbon, and the main component of straw plant ash is potassium carbonate, so that the plant ash wholly shows a strong base and weak acid character, and acidic waste gas can be more efficiently adsorbed and purified.

The invention provides a bird repellent and a preparation method of same. The preparation method includes steps of: 1) preparation of resin: mixing an initiator and water to obtain a first mixture liquid, mixing a polymerization monomer, a crosslinker, an emulsifier and water to obtain a second mixture liquid, adding the first mixture liquid and the second mixture liquid into a reactor to performa polymerization reaction, thereby obtaining an intermediate, and demulsifying, washing and drying the intermediate to obtain the resin; 2) preparation of the bird repellent: mixing an active component with the resin to form the bird repellent. In the bird repellent, the active component is adsorbed by the resin, so that the bird repellent has sustained release function and is prolonged in effective use time.

The invention discloses a preparation method of a triazinyl calix [4] arene porous polymer and application thereof, which polymerizes s-triazine and the amino on the upper edge of 4-amino calixarene to form the C-N bonds so as to construct a triazinyl calix [4] arene porous polymer. According to the preparation method of a triazinyl calix [4] arene porous polymer and application thereof, the 4-amino calixarene modified by s-triazine which is rich in nitrogen atoms not only increases the nitrogen content of the polymer and the specific surface area of the material, but also improves the thermalstability of the polymer. The triazinyl calix [4] arene porous polymer is stable to humidity and water and exhibits a relatively high loading capacity for iodine in the aqueous solutions, which is upto 240%.

The invention relates to the field of textile products, and particularly discloses a preparation method for antibacterial cloth and the antibacterial cloth. The antibacterial cloth comprises 20-30 parts of cotton fibers, 10-20 parts of polyurethane fibers, 50-60 parts of carex meyeriana fibers, 50-60 parts of silk fibers, 30-40 parts of bagasse composite fibers, 50-60 parts of silk fibers and 50-60 parts of wool fibers; wherein the bagasse composite fibers are prepared by blending 30-40 parts of bagasse viscose fibers, 10-20 parts of coconut carbon fibers, and 30-40 parts of polyester fibers.The cloth is compact in structure, good in air permeability and good in wear resistance. The preparation method for the cloth comprises preparation of warp yarns and weft yarns and preparation of an antibacterial agent. The antibacterial cloth prepared through the method can be used for antibacterial and deodorant products and has the advantages of being remarkable in antibacterial effect, good inantibacterial durability, washable and the like.

The invention provides an impurity adsorption device for production of pesticide, and relates to the field of production of pesticides. The impurity adsorption device for production of the pesticide comprises an adsorption box, the top of the right side of the adsorption box is fixedly connected with a fixing plate; the top of the fixing plate and the top of the adsorption box are positioned on the same horizontal plane; a sliding track is fixedly mounted on the top of the inner wall of the adsorption box; the right end of the sliding track penetrates through the adsorption box and extends to the outside of the adsorption box; the top of the sliding track positioned outside the adsorption box is fixedly connected with the bottom of the fixing plate; a sliding box is arranged inside the adsorption box; and pulleys which are matched with the sliding track are fixedly mounted on the top of the sliding box. According to the impurity adsorption device for production of the pesticide, the adsorption area of the electromagnetic adsorption device is increased, furthermore, the distance between the electromagnetic adsorption device and a pesticide raw material is shortened, so that the electromagnetic adsorption device can comprehensively adsorb magnetic impurities in the pesticide raw material, the adsorption quality is high, and time and labor are saved.

The invention discloses an automatic oil coating device of an automobile motor rotor. A transfer device comprises a conveying belt on a tension shaft and a support shaft, a driving device comprises arotation shaft, a driving wheel is fixedly arranged at an end part of the rotation shaft and is provided with convex teeth, the driving wheel is engaged with a first gear, a first convex block is concentrically arranged at an end surface of the driving wheel, the driving device also comprises a swinging piece, the swinging piece comprises a swinging arm and a fan-shaped gear, a brushing device comprises an air cylinder, the air cylinder is arranged below the swinging piece, an oil inlet valve and an oil outlet valve are arranged on a side wall of the air cylinder at one side of an air cylinderpiston rod, an oil groove is formed in the bottom of the air cylinder, the brushing device covers the oil groove, an oil pipe is arranged in the side wall of the air cylinder between the oil outlet valve and the oil groove, an air inlet one-way valve and an air outlet one-way valve are arranged on the side wall of the air cylinder at one side far away from the air cylinder piston rod, and an airspraying head is arranged on a side wall of the brushing device. With the adoption of the automatic oil coating device disclosed by the technical scheme, automatic oil removal and rust prevention areperformed on the motor rotor, and the efficiency is greatly improved.