69results about How to "Gap developed" patented technology

The invention relates to a modified straw wood charcoal adsorbent which is prepared from the following raw materials in parts by weight: 110-120 parts of straw wood charcoal, 8-10 parts of zeolite powder, 7-9 parts of medical stone powder, 7-9 parts of acrylamide, 6-9 parts of kieselguhr, 16-20 parts of citric acid, 3-4 parts of EDTA (ethylene diamine tetraacetic acid), 4-6 parts of sodium tripolyphosphate, 4-5 parts of modified kieselguhr and right amount of water. The zeolite, medical stone, kieselguhr and other rock powders used for modification can enhance the adsorptivity, implement microbial resistance, deodorization, moisture absorption, mold prevention and desulfurization, and catalyze the decomposition of organic substances; the acrylamide can flocculate pollutants in water; by using the straw wood charcoal as the substrate, the adsorbent has the advantages of developed pores, high adsorption capacity and low cost, and is suitable for industrial production; and the adsorbent is suitable for daily air and water purification, and also suitable for treating industrial wastewater and waste gas.

The invention relates to a multi-heteroatom codoped hollow porous carbon material, a preparation method and application thereof. The method includes: firstly taking a metal-organic framework as the structure template and nitrogen source, then adding two reactants containing nitrogen, phosphorus and sulfur heteroatoms for in situ polymerization reaction on the surface of the metal-organic frameworkcompound, and doping nitrogen, phosphorus and sulfur heteroatoms at the same time to obtain a compound with similar geometric profile to a pure metal-organic framework compound crystal, and conducting high-temperature calcination and hydrochloric acid aqueous solution reaction to remove metal oxide, thus obtaining the multi-heteroatom codoped hollow porous carbon material; and mixing the composite material, acetylene black and a polytetrafluoroethylene emulsion evenly, then coating graphite paper with the mixture, and performing drying to obtain a capacitance desalination electrode. The method provided by the invention has the characteristics of simple operation and easily controllable conditions, and the obtained electrode has high specific surface area, good electrical conductivity andwettability, and has potential application prospects in capacitance desalination aspect.

The invention discloses a membrane material for a lithium sulfur battery positive electrode, and belongs to the technical field of electrochemical batteries. The membrane material for making the lithium sulfur battery is designed against the disadvantages of poor conductivity, low active substance utilization rate and the like of traditional lithium sulfur batteries, and has the advantages of multilayer filter screen structure, prosperous gap, high conductivity, simple preparation technology and harmlessness to the environment. The membrane material for the positive electrode is placed between a positive plate and a diaphragm, so the dissolution of the polysulfide in the electrolyte in the charge and discharge process of the battery is effectively inhibited, and the corrosion of the polysulfide to a metallic lithium negative electrode is reduced. The lithium sulfur battery adopting the membrane material has a high active substance utilization rate and stable cycle performances, has an initial discharge specific capacity under a current density of 0.162mA/cm<2>, and still has a discharge specific capacity of above 702mAh/g after 50 times cycle; and compared with traditional lithium sulfur batteries, the lithium sulfur battery adopting the membrane material has the advantages of excellent performances and low cost, and lays a good foundation for the marketization of the lithium sulfur battery.

The invention discloses a cordierite compound ceramic filter element. The cordierite compound ceramic filter element is characterized by being prepared from the following raw materials in parts by weight: 13-15 parts of cordierite, 9-11 parts of mullite, 6-8 parts of silochrom, 4-7 parts of smectite, 8-10 parts of activated alumina, 3-5 parts of calcium sulfate, 2-3 parts of dimethyl silicon oil, 3-4 parts of sodium alginate, 3-5 parts of palm fibers, 2-3 parts of urea, 5-7 parts of modifying coconut active charcoal, and the defined amount of water. The cordierite compound ceramic filter element provided by the invention has the advantages that the silochrom is added, so that the adsorptive property and heat stability are good, the chemical property is stable, and the mechanical strength is high; the palm fibers are added, so that the tenacity of the filter element is added, meanwhile, the cordierite compound ceramic filter element has a porous property, and the filtering adsorptive property is improved; the modifying coconut active charcoal is added, so that the gap structure is developed, the adsorptive property is good, the intensity is high, the regeneration is easy, and the cordierite compound ceramic filter element is economical and durable, is long in service life, is corrosion-proof and can be used for air adsorption filtration.

The invention discloses a method for making activated carbon by using wild peach pit shells. The method comprises the steps that the wild peach pit shells are dried for 12 hours at the temperature of 120DEG C to be dewatered, and are smashed to penetrate through a 40-mesh screen, the smashed wild peach pit shells are soaked in a 60% zinc chloride solution for 24 hours under the condition that the ratio of the wild peach pit shells to the zinc chloride solution is 1:2, then the soaked wild peach pit shells are transferred to a microwave oven with the microwave power ranging from 400W to 700W, and are processed for 10-30 minutes through irradiation, the processed wild peach pit shells are activated for 30-120 minutes at the temperature ranging from 400DEG C to 700DEG C, and then are processed through acid picking in a diluted hydrochloric acid solution which has the volume ratio of being 1:9 and is boiled for 30 minutes, cooling is conducted, the cooled wild peach pit shells are washed until the PH value ranges from six to seven, and are dried, and therefore the wild peach pit shell activated carbon can be obtained. The wild peach pit shell activated carbon made through the method has excellent adsorption performance.

The invention relates to a novel composite gas explosion suppressant which is composed of inorganic filler, a porous mineral material and inorganic phosphorus substances. The components are crushed, uniformly mixed and dried to obtain the gas explosion suppressant. The porous mineral material composite explosion suppressant prepared by the invention has the advantages of fine and uniform texture,low cost, low moisture absorption, high-efficiency explosion suppression, and easiness in industrial production, and can be applied to the field of gas explosion suppression.

The invention discloses a composite (BiO)2CO3/C photocatalyst and application thereof, and belongs to the field of photocatalysis materials. Carbon fibers are prepared by adopting bamboo fibers as a carbon source, and (BiO)2CO3 is uniformly loaded on the carbon fibers by utilizing a hydrothermal method. The material is excellent in photocatalysis performance, and especially under the illumination of a xenon lamp, organic pollutants in sewage can be effectively degraded.

The invention discloses a ceramic filter element added with polyvinyl chloride powder. The ceramic filter element is characterized by being prepared from the following raw materials in parts by weight: 13 to 15 parts of kaolin, 9 to 11 parts of talc powder, 3 to 4 parts of aluminum powder, 10 to 12 parts of polyvinyl chloride powder, 8 to 10 parts of chlorinated paraffin, 8 to 10 parts of wollastonite powder, 3 to 5 parts of fiberglass, 3 to 4 parts of bamboo charcoal, 2 to 4 parts of ammonium bicarbonate, 8 to 10 parts of ethyl acetate, 3 to 5 parts of crushed cotton hulls, 5 to 7 parts of modified cocoanut shell activated carbon and a proper amount of water. According to the ceramic filter element, due to the addition of the polyvinyl chloride powder, a formed material is high in elasticity and is tough; due to the use of the materials such as kaolin and talc powder, resources are rich, the raw materials are readily available, and the cost is reduced; due to the addition of the modified cocoanut shell activated carbon, the ceramic filter element is high in porosity and adsorption performance, strong in strength, easy to renew, economical and durable; the prepared filter element is high in toughness, strong in strength, high in adsorption efficiency and suitable for water treatment or air adsorption filtration.

The invention discloses a waterproof mouse-ant prevention cable. The waterproof mouse-ant prevention cable comprises a cable core and a protective cover layer coating the outer side of the cable core, and the protective cover is prepared from, by weight, 20-40 parts of metallocene polyethylene, 65-85 parts of nitrile silicone rubber, 3-5 parts of titanium triisostearoylisopropoxide, 4-8 parts of barium stearate, 90-110 parts of filling agent, 2-4 parts of bis(2,4-dichlorobenzoyl) peroxide, 1-2 parts of butyl 4,4-bis(tert-butyldioxy)valerate, 2-4 parts of di(2-ehtylhexyl)4,5-epoxy tetrahydrophthalate, 1-3 parts of calcium stearate, 4-8 parts of microcrystalline wax and 2-3 parts of antioxidant. The waterproof mouse-ant prevention cable can effectively prevent water vapor from entering the inside of the cable, and is small in compression deformation, high in strength, high in mouse-ant prevention performance, resistant to tear and good in thermostability.

The invention relates to a preparation method of a composite aerogel adsorbent. The preparation method of the chitosan/tap water plant aluminum sludge composite aerogel adsorption material comprises the following steps: 1) dissolving chitosan into 1-3 vol% glacial acetic acid to obtain a 0.1-10 mass% chitosan solution; 2) drying the tap water plant aluminum sludge, and adding 0.1-30% of a foamingagent into the tap water plant aluminum sludge to obtain sludge slurry; 3) uniformly mixing and stirring the obtained chitosan solution and sludge slurry, and performing low-temperature freezing untilthe material is compact and uniform; 4) unfreezing the material with absolute ethyl alcohol to separate out internal organic substances and water; and 5) adding the unfrozen composite aerogel material into an acidic solution to enable a foaming agent in the material to react with acid until gas is generated and escaped, thereby finally forming the composite adsorption material with a large numberof pores. The chitosan sludge composite aerogel adsorbent obtained by the preparation method is large in specific surface area, relatively high in selectivity on low-concentration uranium-containingwastewater, high in adsorption capacity and short in adsorption time, and has a relatively high removal rate on low-concentration uranium.

The invention discloses a preparation method of chrysanthemum morifolium tea with a high nutrition retention rate. The preparation method comprises steps as follows: chrysanthemum morifolium flowers are soaked in clean water, coconut shell powder composite is added and stirred, and a first material is obtained; the first material is filtered, washed with clean water, spread and aired until no water drops are left on surfaces of petals and the petals are withered, put into a drying room to be dried, cooled to the normal temperature, sprayed with a citric acid solution, left to stand, put into the drying room to be dried and cooled, and the chrysanthemum morifolium tea with a high nutrition retention rate is obtained. The obtained chrysanthemum morifolium tea has a low water content and cannot get mildewed during storage; aromatic oil is little volatilized and seldom lost by comparison with the aroma of unprocessed chrysanthemum morifolium; the petals of chrysanthemum morifolium can be effectively prevented from changing color, the nutrient content of the drink is increased, the petals can be shrunk and deformed slowly and are soft and unlikely to break and fall, and accordingly, the chrysanthemum morifolium in the tea can keep good flower forms.

The invention discloses a silochrom added ceramic filter element with good stability. The silochrom added ceramic filter element is characterized by being prepared from the following raw materials in parts by weight: 10-12 parts of activated carbon fiber, 12-13 parts of kaolin, 8-10 parts of mullite, 9-11 parts of zeolite powder, 6-8 parts of powdered aluminum, 4-7 parts of silochrom, 1-2 parts of polyvinyl alcohol, 3-5 parts of wheat flour, 3-5 parts of smashed Badam shell, 3-5 parts of smashed cotton hull, 1-2 parts of epoxidized soybean oil, 5-7 parts of modified cocoanut active charcoal and a proper amount of water. Due to the addition of the silochrom, the ceramic filter element is high in adsorptive property, good in thermal stability, stable in chemical property and high in mechanical strength; due to the addition of the Badam shell and cotton hull, the tenacity of the filter element is increased, and the filtering adsorptive property is improved because of porous performance; due to the addition of the modified cocoanut active charcoal, the ceramic filter element is large in gaps, good in adsorptive property, high in strength, easy to regenerate, economical and durable; the filter element can be used for air adsorption filtration.

The invention provides a vanadium-free denitration catalyst for arsenic-containing flue gas and a preparation process thereof. The catalyst still has a high denitration efficiency and anti-deactivating property when the arsenic content reaches up to 2.5 wt%. The catalyst can solve the problem that the arsenic adsorption amount is reduced, the denitration efficiency is reduced, the activity is relatively poor and the service life is short as vanadium pentaoxide is reacted with arsenic to block microcosmic ducts in the arsenic-containing flue gas which takes vanadium pentaoxide as the active substance.

Provided is a stator of a single-phase motor with which an efficient magnetic circuit can be formed and a large torque can be obtained. The stator includes a pair of stator cores each having C-shape in a plan view and including distal end portions E disposed proximate to an outer peripheral surface of an axial rotor having a rotating shaft. The stator cores are disposed to opposite to each other with the rotor disposed therebetween in a first radial direction X orthogonal to an axial direction along a central axis line O of the rotating shaft. The stator cores include a pair of arm portions each extending in a radial direction intersecting the first radial direction X, and a base portion. The base portion connects ends of the arm portions on the opposite side from the distal end portions E, and extends in a circumferential direction encircling the central axis line O.

The invention provides a preparation method of an activated carbon fiber. The method comprises the steps that cotton linters are immersed in a phosphate solution, dried, carbonized under the protection of nitrogen and then activated by water vapor to obtain the activated carbon fiber. According to the method, the cotton linters are adopted as raw materials, there is no need to purify or biologically process the raw materials, the preparation process is simple and quick, the production cost is low, and the obtained activated carbon fiber has a large specific surface area and can be used for wastewater adsorption and reused.

The invention provides a method for reducing the content of phenol in water through unburnt carbon in solid waste fly ash. The method includes the steps of fly ash flotation, unburnt carbon stirring and adsorption, centrifugal solid and liquid separation, detection and the like. Industrial solid waste fly ash is subjected to flotation to obtain the foam product, namely unburnt carbon; the unburnt carbon is added into sewage containing phenol to be adsorbed, solid and liquid separation is conducted by means of a centrifugal machine after adsorption is finished, and supernate is purified water obtained after treatment; the unburnt carbon removal rate of unburnt carbon in water is calculated. Fine granularity, large specific surface area and a rich porous structure of unburnt carbon are used for adsorbing and removing phenol in water, accordingly the content of phenol in water is reduced, and the effect of reducing waste by means of waste is achieved.